3C-a01

Y 系バルク着磁，機械的特性㻳㼐㻙㻮㼍㻙㻯㼡㻙㻻 ㉸㟁ᑟ䝞䝹䜽䛻䛚䛡䜛䝋䝺䝜䜲䝗䝁䜲䝹䛸䝇䝥䝸䝑䝖䝁䜲䝹㻌䜢⏝䛔䛯䝟䝹䝇╔☢≉ᛶ㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㻳㼐㻙㻮㼍㻙㻯㼡㻙㻻㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼎㼡㼘㼗㻌㼙㼍㼓㼚㼑㼠㼕㼦㼑㼐㻌㼎㼥㻌㼜㼡㼘㼟㼑㼐㻌㼒㼕㼑㼘㼐㻌㼡㼟㼕㼚㼓㻌㼟㼛㼘㼑㼚㼛㼕㼐㻌㼏㼛㼕㼘㻌㼍㼚㼐㻌㼟㼜㼘㼕㼠㻌㼏㼛㼕㼘㻌

T

B (T)

㻌
ᮃ᭶㻌 ㇦ᙪ㻘㻌 ෆ⸨㻌 ᬛஅ㻘㻌 ⸨௦㻌 ༤அ㻌 䠄ᒾᡭ኱䠅㻧㻌㼅㼡㼚㻙㼔㼡㼍㻌㻿㼔㼕㻘㻌㻹㼍㼞㼗㻌㻰㼛㼡㼓㼘㼍㼟㻌㻭㼕㼚㼟㼘㼕㼑㻌㻔㻯㼍㼙㼎㼞㼕㼐㼓㼑 ኱㻕㻌㻹㻻㻯㻴㻵㼆㼁㻷㻵㻌㻴㼕㼐㼑㼔㼕㼗㼛㻘㻌㻺㻭㻵㼀㻻㻌㼀㼛㼙㼛㼥㼡㼗㼕㻘㻌㻲㼁㻶㻵㻿㻴㻵㻾㻻㻌㻴㼕㼞㼛㼥㼡㼗㼕㻌㻔㻵㼣㼍㼠㼑㻌㼁㼚㼕㼢㻚㻕㻧㻌 㻌㼅㼡㼚㻙㼔㼡㼍㻌㻿㼔㼕㻘㻌㻹㼍㼞㼗㻌㻰㼛㼡㼓㼘㼍㼟㻌㻭㼕㼚㼟㼘㼕㼑㻌㻔㼁㼚㼕㼢㻚㻌㼛㼒㻌㻯㼍㼙㼎㼞㼕㼐㼓㼑㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㻞㻞㻝㻠㻜㻟㻡㻬㼕㼣㼍㼠㼑㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌ᆒ୍䛺☢ሙศᕸ䜢♧䛧䛶䛚䜚䚸㻞㻌 䟚ୖ᪉䛻䛚䛔䛶䜒 㻝㻚㻤㻌 㼀 ᤕ㻝䠊䛿䛨䜑䛻㻌
ᤊ䛥䜜䛶䛔䜛䛣䛸䛜☜ㄆ䛷䛝䛯䚹☢ሙศᕸ䛾⤖ᯝ䛛䜙䜒䝇䝥䝸㻾㻱㻮㻯㻻㻔㻾㻱 䛿ᕼᅵ㢮ඖ⣲䜎䛯䛿 㼅㻕䛿㧗☢ሙ䛻䛚䛔䛶䜒䝑䝖䝁䜲䝹䛿䝋䝺䝜䜲䝗䝁䜲䝹䛻ẚ䜉ຠᯝⓗ䛺╔☢᪉ἲ䛷䛒䜛䛸㧗䛔⮫⏺㟁ὶᐦᗘ䜢♧䛩䛣䛸䛛䜙Ọஂ☢▼䛸䛧䛶䛾ᛂ⏝䛜ᮇ⪃䛘䜛䚹㻌ᚅ䛥䜜䛶䛔䜛䚹㉸㟁ᑟ䝞䝹䜽䛾◊✲䛿㉸㟁ᑟ䝬䜾䝛䝑䝖䜢⏝
ㅮ₇䛷䛿䚸ᤕᤊ☢ሙ≉ᛶ䛸☢ሙศᕸ䛾⤖ᯝ䛸䛸䜒䛻䚸 ᗘ䛔䛯☢ሙ୰෭༷╔☢ἲ㻌 㻔㻲㻯㻹㻕䛻䜘䜛╔☢䛜୍⯡ⓗ䛷䛒䜛䛜䚸ୖ᪼䜔䝁䜲䝹䛾䝃䜲䝈䛻䜘䜛ᤕᤊ☢ሙ≉ᛶ䛾ᙳ㡪䛻䛴䛔䛶㆟䝞䝹䜽ᛂ⏝䜢⪃䛘䜛䛸㖡䝁䜲䝹䜢⏝䛔䛯䝁䞁䝟䜽䝖䛛䛴▷᫬㛫ㄽ䛩䜛ணᐃ䛷䛒䜛䚹㻌䛾╔☢䛜ྍ⬟䛺䝟䝹䝇╔☢㻌 㻔㻼㻲㻹㻕䛜᭷ຠ䛷䛒䜛䛸⪃䛘䜛䚹䛥䜙䛻⯪⯧⏝䛾䝰䞊䝍䞊䜔☢Ẽศ㞳䛾䜘䛖䛺ิ≧䜔㠃ୖ䛾䝞
4䝹䜽䜢╔☢䛩䜛䛯䜑䛻䛿኱ཱྀᚄ䝋䝺䝜䜲䝗䝁䜲䝹䛾㛤Ⓨ䜢ᚲせSolenoid coid TS=40 K䛸䛩䜛䛺䛹䚸㻲㻯㻹 䛻䛿ᛂ⏝ୖၥ㢟䛜ከ䛟䛒䜛䚹ᮾிᾏὒ኱䛾
3.5
Solenoid coid TS=65 K஭⏣䜙䛿䝞䝹䜽ୖୗ䛻 ᕳ䛝ᆺ䛾䝁䜲䝹䜢タ⨨䛧䛯䝟䝹䝇╔
Split coid TS=40 K☢≉ᛶ䜢ሗ࿌䛧䛶䛚䜚䚸䝋䝺䝜䜲䝗䝁䜲䝹䜘䜚䜒ຠ⋡ⓗ䛺╔☢᪉
3Split coid TS=65 Kἲ䛷䛒䜛䛣䛸䜢ሗ࿌䛧䛶䛔䜛㼇㻝㼉䚹⸨௦䜙䛿 ᕳ䛝ᆺ䝁䜲䝹䜢⏝
2.5
䛔䛯䝟䝹䝇╔☢≉ᛶ䜢䝅䝭䝳䝺䞊䝅䝵䞁䛻䜘䜚ゎᯒ䛧䚸䝋䝺䝜䜲bulk #476
䝗䝁䜲䝹䜘䜚䜒╔☢ຠ⋡䛜Ⰻ䛔䛸ሗ࿌䛧䛶䛔䜛㼇㻞㼉䚹䛭䛣䛷ᮏ◊
2 PFM✲䛷䛿 㻳㼐㻮㻯㻻 䝞䝹䜽䛻ᑐ䛧䝋䝺䝜䜲䝗䝁䜲䝹䛸䝇䝥䝸䝑䝖䝁䜲䝹䜢⏝䛔䛯 㻼㻲㻹 ᐇ㦂⤖ᯝ䛸䝅䝭䝳䝺䞊䝅䝵䞁䛻䜘䜛ゎᯒ⤖ᯝ䜢
1.5
ሗ࿌䛩䜛䚹䜎䛯䚸䝇䝥䝸䝑䝖䝁䜲䝹䛾䝃䜲䝈䛻䜘䜛ᤕᤊ☢ሙ≉ᛶ
1䛾ᙳ㡪䜢ሗ࿌䛩䜛䚹㻌㻞䠊ᐇ㦂᪉ἲ㻌ᮏ◊✲䛷⏝䛔䛯 㻳㼐㻮㻯㻻 䝞䝹䜽䛿 㼀㻿㻹㻳 ἲ䛷స〇䛧䚸┤ᚄ 㻟㻜㻌㼙㼙䚸ཌ䛥 㻝㻡㻌㼙㼙 䛻ᡂᙧ䛧䛯䚹䝇䝥䝸䝑䝖䝁䜲䝹䛻䜘䜛 㻼㻲㻹䛿㖡䝩䝹䝎䞊䛻䝞䝹䜽䜢ᅛᐃ䛧䚸㼍㼎㻙㼜㼘㼍㼚㼑 䜢෭༷᪉ྥ䛸䛧䛶㻳㻹 ෭෾ᶵ䛻䜘䜚ྛึᮇ ᗘ䛻ఏᑟ෭༷䛧䛯䚹䝋䝺䝜䜲䝗䝁䜲䝹䛻䜘䜛 㻼㻲㻹 ᐇ㦂䛷䛿䚸䝞䝹䜽䜢 㻿㼀㼅㻯㻭㻿㼀 䜢⏝䛔䛶⿵ᙉ㻿㼁㻿 䝸䞁䜾䛻ᇙ䜑㎸䜏䚸䝁䞊䝹䝗䝦䝑䝗䛻ᅛᐃ䛧䛯䚹䛭䜜䛮䜜䛾䝁䜲䝹䛿┿✵ᐜჾ䛾እഃ䛷ᾮయ❅⣲䛻䜘䜛෭༷䜢⾜䛔䚸❧䛱ୖ䛜䜚᫬㛫䛜༑ᩘ 㼙㼟 䛾䝟䝹䝇☢ሙ䜢༳ຍ䛧䛯䚹ᤕᤊ☢ሙ䛿䝞䝹䜽⾲㠃୰ᚰ䛻タ⨨䛧䛯䝩䞊䝹䝉䞁䝃䞊䜢⏝䛔䛶 ᐃ䛧䚸☢ሙศᕸ䛾㝿䛻䛿䝞䝹䜽⾲㠃䛛䜙 㻞㻌㼙㼙 ୖ᪉䛻䛚䛔䛶 㻝㻌㼙㼙䝢䝑䝏䛷㉮ᰝ䛧 ᐃ䛧䛯䚹䜎䛯䝋䝺䝜䜲䝗䝁䜲䝹䛸䝇䝥䝸䝑䝖䝁䜲䝹䛾╔☢≉ᛶ䜢ẚ㍑䛩䜛䛯䜑䛻䞞䝣䜷䝖䞁䛾 㻼㻴㻻㼀㻻㻌䇵㻱㻰㻰㼅䛸 㻼㻴㻻㼀㻻㻌 㻙㼀㻴㻱㻾㻹㻻 䜢⏝䛔䛶䝞䝹䜽ෆ䛾 ᗘ䜔☢᮰䛾౵ධ⤒㊰䜢ゎᯒ䛧䛯䚹㻌㻟䠊ᐇ㦂⤖ᯝ㻌䠢䡅䡃㻚㻌㻝 䛻 㼀㻿㻩㻢㻡㻌㻷㻘㻌㻠㻜㻌㻷 䛻䛚䛡䜛䝋䝺䝜䜲䝗䝁䜲䝹䛸䝇䝥䝸䝑䝖䝁䜲䝹䜢⏝䛔䛯ᤕᤊ☢ሙ䛾༳ຍ☢ሙ౫Ꮡᛶ䜢♧䛩䚹䝇䝥䝸䝑䝖䝁䜲䝹䛿䝋䝺䝜䜲䝗䝁䜲䝹䜘䜚䜒 㻮㼀 䛜ᛴ䛺❧䛱ୖ䛜䜚䜢䛧䛶䛔䜛䛣䛸䛛䜙䚸䝇䝥䝸䝑䝖䝁䜲䝹䛿☢᮰䛜ᆒ୍䛻౵ධ䛧䛶䛔䜛䛣䛸䛜⪃䛘䜙䜜䜛䚹䜎䛯䚸䝇䝥䝸䝑䝖䝁䜲䝹䛾᭱኱ᤕᤊ☢ሙ䛿 㼀㻿㻩㻠㻜㻌㻷 䛻䛚䛔䛶 㻮㼀㻩㻟㻚㻞㻜㻌㼀䚸䝋䝺䝜䜲䝗䝁䜲䝹䛷 㻮㼀㻩㻝㻚㻥㻞㻌㼀 䛷䛒䛳䛯䚹㻳㼐㻮㻯㻻 䝞䝹䜽䛾⇕ఏᑟ⋡䛿 㼏㻙㼍㼤㼕㼟 ᪉ྥ䜘䜚䜒 㼍㼎㻙㼜㼘㼍㼚㼑 ᪉ྥ䛜⣙ 㻠 ಸ኱䛝䛔䚹䛭䛾⤖ᯝ 㼏㻙㼍㼤㼕㼟 ᪉ྥ䛜෭༷᪉ྥ䛷䛒䜛䝋䝺䝜䜲䝗䝁䜲䝹䛾╔☢䜘䜚䜒 㼍㼎㻙㼜㼘㼍㼚㼑 䛜෭༷᪉ྥ䛷䛒䜛䝇䝥䝸䝑䝖䝁䜲䝹䛾䜋䛖䛜⇕䛿䛡䛜䜘䛟䚸ᤕᤊ☢ሙ䛜ྥୖ䛧䛯䛸⪃䛘䜛䚹㻌㻲㼕㼓㻚㻌 㻞 䛻䝞䝹䜽⾲㠃 㻞㻌 䟚ୖ᪉䛻䛚䛡䜛䛭䜜䛮䜜䛾䝁䜲䝹䛷╔☢䛧䛯☢ሙศᕸ䜢♧䛩䚹㻠㻜㻌 㻷 䛷䛿㧗䛔䝢䞁Ṇ䜑ຊ䜢ᣢ䛴䛯䜑䝞䝹䜽ෆ䛾୙ᆒ୍䛺Ⓨ⇕䛻䜘䜚䚸୙ᆒ୍䛺☢ሙศᕸ䛜ᚓ䜙䜜䜛䛜䚸䝇䝥䝸䝑䝖䝁䜲䝹䜢⏝䛔䛶╔☢䛧䛯䝞䝹䜽䛿㠀ᖖ䛻

0.5
0

2

3

4

B

5
ex

6

(T)

㻲㼕㼓㻚㻌㻝㻌㻭㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼔㼑㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼙㼍㼓㼚㼑㼠㼕㼦㼑㼐㻌㼎㼥㻌㼟㼜㼘㼕㼠㻌㼛㼞㻌㼟㼛㼘㼑㼚㼛㼕㼐㻌㼏㼛㼕㼘㻌㼍㼠㻌㻠㻜㻌㼍㼚㼐㻌㻢㻡㻌㻷㻚㻌
㻌
㻌 (a)
㻌
㻌
㻌
㻌
㻌
㻌
㻌
㻌
㻌

(b)

㻲㼕㼓㻚㻌㻞㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼜㼞㼛㼒㼕㼘㼑㻌㼙㼍㼓㼚㼑㼠㼕㼦㼑㼐㻌㼎㼥㻌㻔㼍㻕㻌㼟㼛㼘㼑㼚㼛㼕㼐㻌㼍㼚㼐㻌㻔㼎㻕㻌㼟㼜㼘㼕㼠㻌㼏㼛㼕㼘㻌㻞㻌㼙㼙㻌㼍㼎㼛㼢㼑㻌㼠㼔㼑㻌㼎㼡㼘㼗㻌㼟㼡㼞㼒㼍㼏㼑㻌㼒㼛㼞㻌㻮㼑㼤㻩㻡㻚㻠㻤㻌㼀㻌㼍㼠㻌㻠㻜㻌㻷㻚ㅰ㎡㻌ᮏ◊✲䛿䚸᪥ᮏᏛ⾡᣺⯆఍䛾஧ᅜ㛫஺ὶ஦ᴗ䜸䞊䝥䞁䝟䞊䝖䝘䞊䝅䝑䝥ඹྠ◊✲䛻䜘䜛ᨭ᥼䜢ᚓ䛯䚹㻌㻌ཧ⪃ᩥ⊩㻌㼇㻝㼉㻌㼀㻚㻌㻵㼐㼍㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻌㻠㻝㻞㻙㻠㻝㻠㻌㻔㻞㻜㻜㻠㻕㻌㻢㻟㻤㻙㻢㻠㻡㻌㼇㻞㼉㻌㻴㻚㻌 㻲㼡㼖㼕㼟㼔㼕㼞㼛㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻌 㻿㼏㼕㻚㻌 㼀㼑㼏㼔㼚㼛㼘㻚㻌 㻞㻠㻌 㻔㻞㻜㻝㻝㻕㻌㻜㻣㻡㻜㻝㻡㻌

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a02

Y 系バルク着磁，機械的特性⣽Ꮝຍᕤ䛧䛯䝞䝹䜽☢▼䛾⣽Ꮝ䛾఩⨨䛸ᤕᤊ☢ሙ≉ᛶ䛾㛵ಀ㻌㻾㼑㼘㼍㼠㼕㼛㼚㼟㼔㼕㼜㻌㼎㼑㼠㼣㼑㼑㼚㻌㼍㻌㼜㼛㼟㼕㼠㼕㼛㼚㻌㼛㼒㻌㼍㻌㼟㼙㼍㼘㼘㻌㼔㼛㼘㼑㻌㼍㼚㼐㻌㼍㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼜㼑㼞㼒㼛㼞㼙㼍㼚㼏㼑㻌㼕㼚㻌㼍㻌㼔㼛㼘㼑㻙㼜㼞㼛㼏㼑㼟㼟㼑㼐㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼎㼡㼘㼗㻌㼙㼍㼓㼚㼑㼠㻌ᶓᒣ㻌 ࿴ဢ䠈䜽䝷䝽䞁䝅䝱㻌 䜶䝷䞁䝎䠈㉿㻌 ඖ㰓䠄㊊฼ᕤ኱䠅䠗ᒸ㻌 ᚭ㞝䠄᪂₲኱䠅㻌㼅㻻㻷㻻㼅㻭㻹㻭㻌㻷㼍㼦㼡㼥㼍㻘㻌㻷㼁㻸㻭㼃㻭㻺㻿㻴㻭㻌㻱㼞㼍㼚㼐㼍㻘㻌㼆㻴㻭㻻㻌㼅㼡㼍㼚㼐㼕㼚㼓㻌㻔㻭㻚㻵㻚㼀㻚㻕㻧㻌㻻㻷㻭㻌㼀㼑㼠㼟㼡㼛㻌㻔㻺㼕㼕㼓㼍㼠㼍㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㻙㼥㼛㼗㼛㼥㼍㼙㼍㻬㼍㼟㼔㼕㼠㼑㼏㼔㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
኱ᆺ䞉㧗≉ᛶ䛾㉸ఏᑟ䝞䝹䜽య䛻䛚䛔䛶䠈䝟䝹䝇☢໬ἲ䛷䜒☢᮰䛾౵ධ䜢ᐜ᫆䛻䛩䜛䛯䜑䛻䠈ヨᩱ䛾୍㒊䛻⣽Ꮝ䜢ຍᕤ䛧䛯䝞䝹䜽య䜢⪃᱌䛧䛯䚹䛣䜜䜎䛷䛿ẚ㍑ⓗ≉ᛶ䛾ప䛔 㻳㻿㻾䠄㻳㼞㼛㼣㼠㼔㻌㻿㼑㼏㼠㼛㼞㻌㻾㼑㼓㼕㼛㼚䠅㒊䛻⣽Ꮝ䜢ຍᕤ䛧䛶䛝䛯䛜䠈ᮏᩥ䛷䛿☢ሙ౵ධ᫬䛾☢Ẽ䝅䞊䝹䝗䜢పῶ䛩䜛䛣䛸䜢⪃៖䛧䛶 㻳㻿㻮䠄㻳㼞㼛㼣㼠㼔㻌㻿㼑㼏㼠㼛㼞㻌㻮㼛㼡㼚㼐㼍㼞㼥䠅㒊䛻ຍᕤ䛧䛯䚹㻳㼐㻮㻯㻻 䝞䝹䜽య䛾㻳㻿㻮㻌㒊䛾 㻝 䛛ᡤ䛻⣽Ꮝ䜢ຍᕤ䛧䛶༢୍䝟䝹䝇☢ሙ䜢༳ຍ䛩䜛ᐇ㦂䜢⾜䛔䠈㻳㻿㻾 㒊䛻ຍᕤ䛧䛯ሙྜ䛾⤖ᯝ䛸ẚ㍑䛩䜛䚹㻌㻠䠊䜎䛸䜑㻌㻳㻿㻮 䛻⣽Ꮝ䜢ຍᕤ䛧䛯 㻳㼐㻮㻯㻻 䝞䝹䜽య䛻䛚䛔䛶╔☢≉ᛶ䜢ホ౯䛧䠈㻳㻿㻾 䛻ຍᕤ䛧䛯ሙྜ䛾⤖ᯝ䛸ẚ㍑䛧䛯䚹☢᮰ᐦᗘ䛾᫬㛫ኚ໬䛾⤖ᯝ䛛䜙䠈㻳㻿㻮 䛻ຍᕤ䛧䛯ሙྜ䛷䜒☢᮰䛜౵ධ䛧᫆䛟䛺䜛䛣䛸䜢☜ㄆ䛧䛯䚹䜎䛯䠈⥲☢᮰㔞䛾⤖ᯝ䛛䜙䠈㻳㻿㻮 䛻ຍᕤ䛧䛯᪉䛜 㻳㻿㻾 䛻ຍᕤ䛩䜛䜘䜚䜒ᤕᤊ☢ሙ䛾Ⅼ䛷᭷฼䛷䛒䜛ྍ⬟ᛶ䜢᫂䜙䛛䛻䛧䛯䚹㻌ᮏ◊✲䛿 㻶㻿㻼㻿 ⛉◊㈝㻌㻞㻠㻡㻢㻜㻟㻠㻟 䛾ຓᡂ䜢ཷ䛡䛯䜒䛾䛷䛒䜛䚹㻌

7.0 T

GSB
H3


3.9 T

5.4 T

hole

7.0 T

H1
H2
H4
GSB
H3



㻲㼕㼓㻚㻌 㻝㻚㻌 㼀㼕㼙㼑㻌 㼞㼑㼟㼜㼛㼚㼟㼑㼟㻌 㼛㼒㻌 㼙㼍㼓㼚㼑㼠㼕㼏㻌 㼒㼘㼡㼤㻌 㼐㼑㼚㼟㼕㼠㼥㻌 㼛㼚㻌 㼠㼔㼑㻌 㼎㼡㼘㼗㻌㼟㼡㼞㼒㼍㼏㼑㻌㼒㼛㼞㻌P+㻩㻟㻚㻥㻘㻌㻡㻚㻠㻌㼍㼚㼐㻌㻢㻚㻞㻌㼀㻌㼍㼠㻌㻞㻜㻌㻷㻚㻌30 3.9 T

5.4 T

7.0 T

15

y (mm)

㻟䠊⤖ᯝ䛚䜘䜃⪃ᐹ㻌ᅗ 㻝 䛻༳ຍ☢ሙ 㻟㻚㻥䠈㻡㻚㻠䠈㻣㻚㻜㻌 㼀 䛾᫬䛾ヨᩱ⾲㠃䛻䛚䛡䜛☢᮰ᐦᗘ䛾᫬㛫ኚ໬䜢♧䛩䚹ୖẁ䛜 㻳㻿㻮 䛻⣽Ꮝ䜢ຍᕤ䛧䛯ሙྜ䠈ୗẁ䛜 㻳㻿㻾 䛻ຍᕤ䛧䛯ሙྜ䛾⤖ᯝ䛷䛒䜛䚹༳ຍ☢ሙ㻟㻚㻥㻌㼀 䛻䛚䛔䛶 㻳㻿㻮 ཬ䜃 㻳㻿㻾 ඹ䛻⣽Ꮝ䜢ຍᕤ䛧䛯㒊ศ䛾್䠄㻴㻝䠅䛜኱䛝䛟䛺䛳䛶䛚䜚䠈⣽Ꮝ㒊䛛䜙☢᮰䛜౵ධ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹༳ຍ☢ሙ 㻡㻚㻠㻌 㼀 䛻䛚䛔䛶୰ᚰ㒊ศ䛾 㻴㻠 䛾್䜢ẚ㍑䛩䜛䛸䠈㻳㻿㻾 䛾ሙྜ䛻ẚ䜉䛶 㻳㻿㻮 䛾ሙྜ䛾᪉䛜್䛜ᑠ䛥䛟䠈☢᮰䛜౵ධ䛧㞴䛟䛺䛳䛶䛔䜛䛣䛸䛜⪃䛘䜙䜜䜛䚹㻌ᅗ 㻞 䛻☢ᴟ⾲㠃䛾☢᮰ᐦᗘศᕸ䜢♧䛩䚹ୖẁ䛜 㻳㻿㻮 䛻⣽Ꮝ䜢ຍᕤ䛧䛯ሙྜ䠈ୗẁ䛜 㻳㻿㻾 䛻ຍᕤ䛧䛯ሙྜ䛾⤖ᯝ䛷䛒䜛䚹༳ຍ☢ሙ 㻟㻚㻥㻌㼀 䛻䛚䛔䛶䠈⣽Ꮝ㒊ศ䛻☢᮰ᐦᗘ䛾䝢䞊䜽䛜⾲䜜䛶䛚䜚䠈䛣䛾⤖ᯝ䛛䜙䜒⣽Ꮝ㒊ศ䛛䜙☢᮰䛜౵ධ䛧䛶ᤕᤊ䛥䜜䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹㻌ᅗ 㻟 䛻᭱኱್䛷つ᱁໬䛧䛯⥲☢᮰㔞䠄ᕥ㍈䠈㼛㼜㼑㼚㻌㼟㼥㼙㼎㼛㼘䠅ཬ䜃ຍᕤ๓䛸ຍᕤᚋ䛾⥲☢᮰㔞䛾ẚ䠄ྑ㍈䠈㼟㼛㼘㼕㼐㻌 㼟㼥㼙㼎㼛㼘䠅䛾༳ຍ☢ሙ౫Ꮡᛶ䜢♧䛩䚹๓⪅䛾⤖ᯝ䛿䠈䛩䜉䛶䛾༳ຍ☢ሙ䛻䛚䛔䛶⣽Ꮝ䜢 㻳㻿㻾 䛻ຍᕤ䛧䛯 㼟㼍㼙㼜㼘㼑㻝 䜘䜚 㻳㻿㻮 䛻ຍᕤ䛧䛯㼟㼍㼙㼜㼘㼑㻞 䛾್䛜኱䛝䛟䛺䛳䛶䛔䜛䚹ᚋ⪅䛾⤖ᯝ䛿䠈༳ຍ☢ሙ㻠㻚㻢㻌㼀 ௨ୖ䛷 㼟㼍㼙㼜㼘㼑㻞 䛾್䛜኱䛝䛔ഴྥ䛜䛒䜚䠈㻳㻿㻮 䛻⣽Ꮝ䜢ຍᕤ䛧䛯᪉䛜Ⰻ䛟䛺䜛ྍ⬟ᛶ䜢♧၀䛧䛶䛔䜛䚹㻌

5.4 T
hole
H2
H1
H4

0
hole

-15
GSB

-30
-30 -150

1530

30 3.9 T-30 -15

0

15

30

5.4 T

-30 -15

0

15

30

0

15

30

㻌

7.0 T

15

y (mm)

㻞䠊ᐇ㦂㻌䃥㻢㻜㽢㻞㻜㻌㼙㼙㻌䛾 㻳㼐㻮㻯㻻 䝞䝹䜽య䠄᪂᪥㚩ఫ㔠〇䠅䛾 㻳㻿㻮䛾እ࿘㏆ഐ䠍䛛ᡤ䛻䃥㻞㻌 㼙㼙 䛾⣽Ꮝ䜢㈏㏻䛥䛫䠈䝝䞁䝎䜢඘ሸ䛧䛯䚹ྠヨᩱ䜢 㻞 ẁᘧ䛾 㻳㻹 䝃䜲䜽䝹෭෾ᶵ䠄㻾㻲㻞㻣㻟㻿㻭䠈䜰䜲䝅䞁⢭ᶵ〇䠅䛷෭༷䛧䛶䠈 ᗘ䝁䞁䝖䝻䞊䝷䛷 㻞㻜䡚㻡㻜㻌㻷 䛻ㄪᩚ䛧䠈ྛ ᗘ䛻䛚䛔䛶 㻟㻚㻝䡚㻣㻚㻜㻌 㼀 䛾䝟䝹䝇☢ሙ䠄❧䛱ୖ䛜䜚᫬㛫䠖㻝㻜㻌㼙㼟䠅䜢ྛ䠍ᅇ༳ຍ䛧䛯䚹㻌
ヨᩱ⾲㠃䛾⣽Ꮝ䜢ຍᕤ䛧䛯 㻳㻿㻮 㒊䠄㻴㻝䠅䠈⣽Ꮝ䜢ຍᕤ䛧䛶䛔䛺䛔 㻳㻿㻮 㒊䠄㻴㻞䠅䠈㻳㻿㻾 㒊㻔㻴㻟㻕䠈୰ᚰ㻔㻴㻠㻕䛾 㻠 䛛ᡤ䛻䝩䞊䝹䝉䞁䝃䠄㻮㻴㼀㻙㻥㻞㻝䠈㻲㻚㼃㻚㻮㻱㻸㻸䠅䜢㈞䜚௜䛡䠈䝕䞊䝍䝻䜺䞊䠄㻼㻭㻙㻿㻝㻜㻜㻜㻛㻤䠈㻼㻒㻭 䝔䜽䝜䝻䝆䞊䝈䠅䜢⏝䛔䛶☢᮰ᐦᗘ䛾᫬㛫ኚ໬䜢 ᐃ䛧䛯䚹䛥䜙䛻䠈☢ᴟ⾲㠃䠄ヨᩱ䛛䜙䛾㊥㞳䠖㻠㻌 㼙㼙䠅䛾☢᮰ᐦᗘศᕸ䜢䠈 ୕ḟ ඖ 䝩䞊 䝹 䝉䞁䝃㻔㻮㻴㻙㻣㻜㻟㻘㻌 㻲㻚㼃㻚㻌㻮㻱㻸㻸㻕䜢⏝䛔䛶 ᐃ䛧䛯䚹㻌

3.9 T

0

hole

-15
GSB

-30
-30 -150

1530-30 -150

1530-30 -15㻌㻲㼕㼓㻚㻌㻞㻚㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌㼛㼚㻌㼠㼔㼑㻌㼏㼔㼍㼙㼎㼑㼞㻌㼟㼡㼞㼒㼍㼏㼑㻌㼕㼚㻌㼍㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㼟㻌㼛㼒㻌㻟㻚㻥㻘㻌㻡㻚㻠㻘㻌㼍㼚㼐㻌㻣㻚㻜㻌㼀㻌㼍㼠㻌㻞㻜㻌㻷㻚㻌㻲㼕㼓㻚㻌㻟㻚㻌㻭㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼚㼛㼞㼙㼍㼘㼕㼦㼑㼐㻌㼠㼛㼠㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼘㼡㼤㻌㻔㼘㼑㼒㼠㻌㼍㼤㼕㼟㻕㻌㼍㼚㼐㻌㼠㼔㼑㻌㼞㼍㼠㼕㼛㻌㼛㼒㻌㼠㼛㼠㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼘㼡㼤㻌㼎㼑㼒㼛㼞㼑㻌㼍㼚㼐㻌㼍㼒㼠㼑㼞㻌㼜㼞㼛㼏㼑㼟㼟㼕㼚㼓㻌㻔㼞㼕㼓㼔㼠㻌㼍㼤㼕㼟㻕㻌㼍㼠㻌㻞㻜㻌㻷㻚㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a03

Y 系バルク着磁，機械的特性㉸ఏᑟ䝞䝹䜽☢▼䛾⣽Ꮝ䝃䜲䝈䛜ᤕᤊ☢ሙ≉ᛶ䛻ཬ䜌䛩ᙳ㡪㻌㻵㼚㼒㼘㼡㼑㼚㼏㼑㻌㼛㼒㻌㼠㼔㼑㻌㼔㼛㼘㼑㻌㼟㼕㼦㼑㻌㼛㼚㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼜㼑㼞㼒㼛㼞㼙㼍㼚㼏㼑㻌㼕㼚㻌㼍㻌㼔㼛㼘㼑㻙㼜㼞㼛㼏㼑㼟㼟㼑㼐㻌㼎㼡㼘㼗㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㻌䜽䝷䝽䞁䝅䝱㻌 䜶䝷䞁䝎䠈㰓㻌 ඖ㰓㻌 䠄㊊฼ᕤ኱䠅䠈ᒸ㻌 ᚭ㞝䠄᪂₲኱䠅䠈ᶓᒣ㻌 ࿴ဢ䠄㊊฼ᕤ኱䠅㻌㻷㼁㻸㻭㼃㻭㻺㻿㻴㻭㻌㻱㼞㼍㼚㼐㼍㻘㻌㼆㻴㻭㻻㻌㼅㼡㼍㼚㼐㼕㼚㼓㻌㻔㻭㻚㻵㻚㼀㻚㻕䠗㻌 㻻㻷㻭㻌㼀㼑㼠㼟㼡㼛㻌㻔㻺㼕㼕㼓㼍㼠㼍㻌㼁㼚㼕㼢㻕㻧㻌㼅㻻㻷㻻㼅㻭㻹㻭㻌㻷㼍㼦㼡㼥㼍㻌㻔㻭㻚㻵㻚㼀㻚㻕㻌㻌㻝䠊䛿䛨䜑䛻㻌

䛶䛔䜛䚹䛣䛣䛷䠈㻢㻚㻞㻌 㼀 䛻䛚䛔䛶್䛜኱䛝䛟పୗ䛧䛶䛔䜛䛜䠈䛣㉸ఏᑟ䝞䝹䜽☢▼䛿ᑠᆺ䛺⿦⨨䛷኱䛝䛺☢ሙ䜢Ⓨ⏕䛥䛫䜛䛣䛸䛜䛷䛝䜛䚹㉸ఏᑟయ䛾☢໬᪉ἲ䛿☢ሙ୰෭༷ἲ䛸䝟䝹䝇☢໬ἲ䛻኱ู䛷䛝䜛䛜䠈๓⪅䛿኱䛝䛺☢ሙ䜢Ⓨ⏕䛷䛝䜛䜒䛾䛾኱ᆺ䛛䛴㧗౯䛺ບ☢⿦⨨䛜ᚲせ䛷䛒䜛䚹ᚋ⪅䛿ỗ⏝䛾⿦⨨䜢౑⏝䛧䛶▷᫬㛫䛷☢໬䛩䜛䛣䛸䛜ྍ⬟䛷䛒䜛䚹䛯䛰䛧䠈Ⓨ⏕䛷䛝䜛☢ሙ䛿๓⪅䛾༙ศ⛬ᗘ䛷䛒䜛䛜䠈ᵝ䚻䛺ᨵⰋᆺ䜜䛿䝣䝷䝑䜽䝇䝆䝱䞁䝥䛜Ⓨ⏕䛧䛯䛯䜑䛷䛒䜛䛣䛸䜢☜ㄆ䛧䛶䛔䜛䚹୍᪉䠈㻠㻜㻌 㻷 䛷䛿༳ຍ☢ሙ 㻠㻚㻢㻌 㼀 䛷᭱኱್䜢ྲྀ䜚䠈䛭䛾ᚋపୗ䛧䛶䛔䜛䚹䜎䛯䠈䃥㻞㻌㼙㼙 䛾ሙྜ䛿⣽Ꮝ 㻠 ಶ䛾ሙྜ䛸ྠᵝ䛻ప䛔್䛸䛺䛳䛶䛚䜚䠈⣽Ꮝ䛜኱䛝㐣䛞䜛ྍ⬟ᛶ䛜䛒䜛䛣䛸䛜♧၀䛥䜜䛯䚹㻌
㻠䠊䜎䛸䜑㻌

䝟䝹䝇☢໬ἲ䛜ᥦ᱌䛥䜜䠈ᤕᤊ☢ሙ䛜ྥୖ䛧䛶䛝䛯䚹୍᪉䠈㏆ᖺ䛾ᮦᩱᢏ⾡䛾ྥୖ䛻క䛔䠈ᨵⰋᆺ䝟䝹䝇☢໬ἲ䛻䛚䛔䛶䜒኱䛝䛺☢ሙ䜢ᤕᤊ䛥䛫䜛䛣䛸䛜㞴䛧䛟䛺䜚䛴䛴䛒䜛䚹䛭䛣䛷䠈ⴭ⪅䜙䛿ヨᩱ䛻⣽Ꮝ䜢ຍᕤ䛧䛶ពᅗⓗ䛻㉸ఏᑟ≉ᛶ䜢పୗ䛥䛫䠈䛭䛾㒊ศ䛛䜙☢᮰䜢ຠ⋡ⓗ䛻౵ධ䛥䛫䛶ᤕᤊ☢ሙ䜢ྥୖ䛥䛫䜛ᡭἲ䜢ᥦ᱌䛧䛶䛝䛯䚹ᮏᩥ䛿⣽Ꮝ䛾኱䛝䛥䛜ᤕᤊ☢
ሙ≉ᛶ䛻୚䛘䜛ᙳ㡪䜢ㄪ䜉䛯⤖ᯝ䜢ሗ࿌䛩䜛䚹㻌኱ᆺ䞉㧗≉ᛶ䝞䝹䜽య䛻䛚䛔䛶䝟䝹䝇☢໬ἲ䛻䜘䜚ᤕᤊ☢
ሙ䜢ྥୖ䛥䛫䜛䛣䛸䜢┠ⓗ䛸䛧䛶䠈⣽Ꮝ䜢ຍᕤ䛧䛯䝞䝹䜽య䛻䛚䛔䛶⣽Ꮝ䛾኱䛝䛥䛜ᤕᤊ☢ሙ≉ᛶ䛻ཬ䜌䛩ᙳ㡪䜢ㄪ䜉䛯䚹┤ᚄ 㻝 ཬ䜃 㻞㻌㼙㼙 䛾ሙྜ䜢ẚ㍑䛧䛯⤖ᯝ䠈ᚋ⪅䛷䛿☢᮰䝣䝻䞊䛻䜘䜛☢᮰ᐦᗘ䛾ῶᑡ䛜኱䛝䛟䛺䛳䛶䛧䜎䛖䛣䛸䛛䜙䠈☢᮰ᐦᗘ䛾ྥୖ䛾ほⅬ䛛䜙䛿⣽Ꮝ䛾኱䛝䛥䛿䃥㻝㻌 㼙㼙 ⛬ᗘ䛜㐺䛧䛶䛔䜛䛸䛔䛖▱ぢ䛜ᚓ䜙䜜䛯䚹㻌㻞䠊ᐇ㦂㻌ᮏ◊✲䛿 㻶㻿㻼㻿 ⛉◊㈝㻌 㻞㻠㻡㻢㻜㻟㻠㻟 䛾ຓᡂ䜢ཷ䛡䛯䜒䛾䛷䛒䜛䚹㻌㻳㼐㻮㼍㻞㻯㼡㻟㻻㼤 䝞䝹䜽య䠄䃥㻢㻜㽢㻞㻜㻌 㼙㼙䠈᪂᪥㚩ఫ㔠䠄ᰴ䠅䠅䛾⤖ᬗᡂ㛗㡿ᇦ䠄㻳㼞㼛㼣㼠㼔㻌 㻿㼑㼏㼠㼛㼞㻌 㻾㼑㼓㼕㼛㼚䠖㻌 㻳㻿㻾䠅䛾እ࿘㏆ഐ䠍䛛ᡤ䛻䃥㻝㻌㼙㼙 䛾⣽Ꮝ䜢䠈䝗䝸䝹䜢⏝䛔䛶ຍᕤ䛧䛯䚹䛺䛚䠈ᶵᲔⓗ⿵ᙉ䛾䛯䜑䛻⣽Ꮝ䛻䛿䝝䞁䝎䜢඘ሸ䛧䛯䚹䛭䛾ヨᩱ䜢 㻞㻌P㻜㻴 㻩㻟㻚㻥㻌㼀㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 P㻜㻴 㻩㻡㻚㻠㻌㼀㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 P㻜㻴 㻩㻣㻚㻜㻌㼀㻌㻌㻌㻌㻌ẁᘧ䛾 㻳㻹 ෭෾ᶵ䠄㻾㻲㻞㻣㻟㻿㻭䠈䜰䜲䝅䞁⢭ᶵ䠅䛷෭༷䛧䛶䠈ᗘ䝁䞁䝖䝻䞊䝷䛷 㻞㻜䡚㻡㻜㻌 㻷 䛻ㄪᩚ䛧䠈ྛ㻣㻚㻜㻌 㼀 䛾䝟䝹䝇☢ሙ䠄❧䛱ୖ䛜䜚᫬㛫䠖㻝㻜㻌 㼙㼟䠅䜢ྛ䠍ᅇ༳ຍ䛧䛯䚹╔☢୰䛾ヨᩱ⾲㠃䛻䛚䛡䜛☢᮰ᐦᗘ䛾᫬㛫ኚ໬䜢ᐃ䛩䜛䛸䛸䜒䛻䠈☢ሙ༳ຍᚋ䠈☢ᴟ⾲㠃䠄ヨᩱ䛛䜙䛾㊥㞳䠖㻠㻌 㼙㼙䠅䛾☢᮰ᐦᗘศᕸ䜢holeᗘ䛻䛚䛔䛶 㻟㻚㻝䡚ᐃ䛧䛯䚹ḟ䛻䠈䛭䛾⣽Ꮝ䜢䃥㻞㻌 㼙㼙 䛻ᣑ㻌㻔㼍㻕㻌 䃥㻝㻌㼙㼙㻌㼔㼛㼘㼑㻌

㻌
㻌
㻌
㻌

኱䛧䛶ྠᵝ䛾╔☢ᐇ㦂䜢⾜䛔䠈⣽Ꮝ䛾኱䛝䛥䛜╔☢≉ᛶ䛻㻌㻌ཬ䜌䛩ᙳ㡪䜢ホ౯䛧䛯䚹㻌

GSB

㻟䠊⤖ᯝ䛚䜘䜃⪃ᐹ㻌

hole

GSB

㻔㼎㻕㻌 䃥㻞㻌㼙㼙㻌㼔㼛㼘㼑㻌ᅗ 㻝 䛻⣽Ꮝ䛾኱䛝䛥䛜㻌 㻔㼍㻕䃥㻝㻌㼙㼙 ཬ䜃㻔㼎㻕䃥㻞㻌㼙㼙 䛾ሙྜ㻲㼕㼓㻚㻝㻚㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌㼛㼚㻌㼠㼔㼑㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼜㼛㼘㼑㻌㼟㼡㼞㼒㼍㼏㼑㻌䛾ᤕᤊ☢ሙศᕸ䜢♧䛩䚹༳ຍ☢ሙ 㻟㻚㻥㻌 㼀 䛷䛿⣽Ꮝ䛜኱䛝䛔᪉䛜ᤕᤊ☢ሙ䛜኱䛝䛟䛺䛳䛶䛔䜛䚹㻡㻚㻠㻌 㼀 䛾ሙྜ䛷䛿᭱኱್䛿䃥㻞㼙㼙 䛾᪉䛜኱䛝䛔䜒䛾䛾䠈⣽Ꮝ䛻䜘䜛ศᕸ䛾ṍ䜏䛜኱䛝㻌䛟⾲䜜䛶䛔䜛䚹㻣㻚㻜㻌㼀 䛷䛿䃥㻝㻌㼙㼙 䛷䛿 㻡㻚㻠㻌㼀 䜘䜚䜒ቑຍ䛧䛶䛔㻌䜛䛜䠈䃥㻞㻌㼙㼙 䛷䛿ῶᑡ䛧䛶䛔䜛䚹㻌㻌ᅗ 㻞 䛻 㻞㻜 ཬ䜃 㻠㻜㻌㻷 䛻䛚䛡䜛༳ຍ☢ሙ䛸⥲☢᮰㔞䛾㛵ಀ㻌䜢♧䛩䚹䛺䛚䠈ຍᕤ๓䛾⤖ᯝཬ䜃䛣䜜䜎䛷䛻⾜䛳䛯䃥㻞㻌 㼙㼙㻌䛾⣽Ꮝ䜢 㻠 ಶຍᕤ䛧䛯ሙྜ䛾⤖ᯝ䜒ẚ㍑䛾䛯䜑䛻♧䛧䛶䛔䜛䚹㻌㻞㻜㻌 㻷 䛷䛿༳ຍ☢ሙ䛸ඹ䛻⥲☢᮰㔞䛿኱䛝䛟䛺䜚䠈༳ຍ☢ሙ㻌㻡㻚㻠㻌㼀 䛷᭱኱䛸䜢ྲྀ䛳䛶䛔䜛䚹᭱኱್䛿ຍᕤ๓䛻ẚ䜉䛶ప䛟䛺䛳䛶䛔䜛䛜䠈䃥㻝㻌 㼙㼙 䛸䃥㻞㻌 㼙㼙 䛻኱䛝䛺ᕪ䛿䛺䛔䚹༳ຍ☢ሙ䛜 㻡㻚㻠㻌 㼀 䜘䜚኱䛝䛔ሙྜ䠈༳ຍ☢ሙ䛸ඹ䛻⥲☢᮰㔞䛿ῶᑡ䛧̿̿

㻌㻲㼕㼓㻚㻞㻚㻌㻭㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼛㼠㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼘㼡㼤㻌㻌

第92回

2015年度秋季低温工学・超電導学会

3C-a04

Y 系バルク着磁，機械的特性༟ୖᆺ㉸ఏᑟ䝞䝹䜽☢▼䛾཯᚟䝟䝹䝇☢໬ἲ㻌䛻䜘䜛ᙉ☢ሙ໬䛾᳨ウ㻌㻵㼙㼜㼞㼛㼢㼑㼙㼑㼚㼠㻌㼛㼒㻌㼍㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼎㼥㻌㼕㼠㼑㼞㼍㼠㼕㼢㼑㻌㼜㼡㼘㼟㼑㼐㻌㼒㼕㼑㼘㼐㻌㼙㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㼛㼚㻌㼍㻌㼐㼑㼟㼗㼠㼛㼜㻌㼠㼥㼜㼑㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼎㼡㼘㼗㻌㼙㼍㼓㼚㼑㼠㻌㻌㉿㻌 ඖ㰓㻖䠈䜶䝷䞁䝎㻌 䜽䝷䝽䞁䝅䝱䠄㊊฼ᕤ኱㝔䠅䠗ᶓᒣ㻌 ࿴ဢ䠄㊊฼ᕤ኱䠅䠗ᒸ㻌 ᚭ㞝䠄᪂₲኱䠅㻌㼆㻴㻭㻻㻌㼅㼡㼍㼚㼐㼕㼚㼓㻘㻌㻱㻾㻭㻺㻰㻭㻌㻷㼡㼘㼍㼣㼍㼚㼟㼔㼍㻘㻌㼅㻻㻷㻻㼅㻭㻹㻭㻌㻷㼍㼦㼡㼥㼍㻌㻔㻭㻚㻵㻚㼀㻚㻕㻧㻌㻻㻷㻭㻌㼀㼑㼠㼟㼡㼛㻌㻔㻺㼕㼕㼓㼍㼠㼍㻌㼁㼚㼕㼢㻚㻕㻌㻌㻝䠊䛿䛨䜑䛻㻌

䜘䜛Ⓨ⇕䛻䜘䜚 㻶㼏 䛜పୗ䛧䠈ᤕᤊ☢ሙ䛜పୗ䛩䜛䛣䛸䛜䜟䛛䛳㉸ఏᑟ䝞䝹䜽☢▼䠄௨ୗ䠈䝞䝹䜽☢▼䛸␎䛩䠅䛿ᑠᆺ䞉Ᏻ䛶䛔䜛䛜䠈ᮏ⤖ᯝ䛿䛣䜜䜎䛷䛾ഴྥ䛸␗䛺䜚䠈᭦䛺䜛᳨ウ䛜ᚲ౯䛷ྲྀ䜚ᢅ䛔᫆䛟䠈୍⯡ⓗ䛺㟁☢▼䛾㝈⏺䛷䛒䜛 㻞㻌 㼀 䜢㉸䛘せ䛷䛒䜛䚹㻌

䜛☢ሙ䜢ᐜ᫆䛻Ⓨ⏕䛥䛫䜛䛣䛸䛜䛷䛝䜛䚹ከ䛟䛾䝞䝹䜽☢▼⿦㻠䠊䜎䛸䜑㻌⨨䛿 㻳㻹 ෭෾ᶵ䛜⏝䛔䜙䜜䛶䛔䜛䛜䠈እ㒊⿦⨨䛸䛧䛶䝁䞁䝥䝺䝑䝃䛜ᚲせ䛷䛒䜚䠈෭෾ᶵ䛿ᑠ䛥䛔䜒䛾䛾⿦⨨඲య䛸䛧䛶䛿኱䛝䛟䛺䛳䛶䛧䜎䛖䚹䛭䛣䛷䠈ⴭ⪅䜙䛿䝇䝍䞊䝸䞁䜾෭෾ᶵ䜢⏝䛔䛯༟ୖᆺ䝞䝹䜽☢▼⿦⨨䜢㛤Ⓨ䛧䛯䚹ྠ෭෾ᶵ䛿እ㒊䛻䝁䞁䝥䝺䝑䝃䜢ᚲせ䛸䛫䛪䠈⿦⨨඲య䛾䝁䞁䝟䜽䝖໬䛻ᡂຌ䛧䛯䚹䛯䛰䛧䠈෭༷ᛶ⬟䛜 㻤㻌㼃㻬㻣㻣㻌㻷 䛷䛒䜚䠈㻳㻹 ෭෾ᶵ䛻ẚ䜉䜛䛸ప䛔್䛸䛺䛳䛶䛔䜛䚹䛣䜜䜎䛷䛾෭༷ཬ䜃╔☢ヨ㦂䛾⤖ᯝ䠈᭱ప฿㐩ᗘ䛜 㻡㻟㻌 㻷䠈ᤕᤊ☢ሙ䛜☢ᴟ⾲㠃䛷 㻝㻚㻟㻌 㼀 䛷ᮏᩥ䛿䝇䝍䞊䝸䞁䜾⏝䛔䛯༟ୖᆺ㉸ఏᑟ䝞䝹䜽☢▼⿦⨨䛻䛚䛔䛶䠈཯᚟䝟䝹䝇☢໬ἲ䛻䜘䜛╔☢ᐇ㦂䜢⾜䛳䛯䚹䛭䛾⤖ᯝ䠈」ᩘᅇ䝟䝹䝇☢ሙ䜢༳ຍ䛩䜛䛣䛸䛷ᤕᤊ☢ሙ䛾ቑຍ䛜䜏䜙䜜䛯䛜䠈㏫䛻኱䛝䛟ῶᑡ䛧䛶䛧䜎䛖䛣䛸䜿䞊䝇䜒☜ㄆ䛥䜜䛯䚹⌧ᅾ䜒ᐇ㦂䜢⥅⥆୰䛷䛒䜚䠈Ⓨ⾲ᙜ᪥䛻᭱᪂䛾䝕䞊䝍䜢ሗ࿌䛩䜛ணᐃ䛷䛒䜛䚹㻌ᮏ◊✲䛿 㻶㻿㻼㻿 ⛉◊㈝㻌 㻝㻡㻷㻜㻡㻥㻡㻝 䛾ຓᡂ䜢ཷ䛡䛯䜒䛾䛷䛒䜛䚹㻌㻌䛒䛳䛯䚹ᮏᩥ䛿᭦䛺䜛ᙉ☢ሙ໬䜢┠ᣦ䛧䛶䠈཯᚟䝟䝹䝇☢໬ἲ䛻䜘䜛╔☢ᐇ㦂䜢⾜䛳䛯⤖ᯝ䜢ሗ࿌䛩䜛䚹㻌㻞䠊ᐇ㦂㻌㻌㻳㼐㻮㼍㻞㻯㼡㻟㻻㼤 䝞䝹䜽య䠄䃥㻠㻡㽢㻝㻡㻌㼙㼙䠈᪂᪥㕲ఫ㔠〇䠅䜢䝇㻔㼍㻕 㻭㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㼟㻦㻌㻣㻚㻜㼀䠉㻡㻚㻠㼀䠉㻡㻚㻠㼀㻌䝍䞊䝸䞁䜾෭෾ᶵ䠄㻯㼞㼥㼛㼀㼑㼘㻌 㻯㼀䠈㻿㼁㻺㻼㻻㼃㻱㻾䠈෭༷⬟ຊ䠖㻤㻌㼃㻬㻣㻣㻌 㻷䠅䛾䝁䞊䝹䝗䝦䝑䝗䛻᥋⥆䛧䛯䝃䞁䝥䝹䝇䝔䞊䝆䛾ඛ➃䛻ྲྀ䜚௜䛡䠈┿✵䝏䝱䞁䝞䜢ྲྀ䜚௜䛡䜛䚹᭱ప฿㐩ᗘ䜎䛷෭༷䛧䛯ᚋ䠈╔☢䝁䜲䝹䜢ྲྀ䜚௜䛡䛶 㻟㻚㻝䡚㻣㻚㻜㻌 㼀 䛾䝟䝹䝇☢
ሙ䠄❧䛱ୖ䛜䜚᫬㛫䠖㻝㻜㻌 㼙㼟䠅䜢」ᩘᅇ༳ຍ䛧䛯䚹☢ሙ༳ຍẖ㻌䛻䝁䜲䝹䜢ྲྀ䜚እ䛧䠈୕ḟඖ䝩䞊䝹䝉䞁䝃䜢⏝䛔䛶☢ᴟ⾲㠃㻔㼎㻕 㻭㼜㼜㼘㼕㼑㼐㻌㼒㼕㼑㼘㼐㼟㻦㻌㻣㻚㻜㼀䠉㻟㻚㻥㼀䠉㻟㻚㻝㼀㻌䠄䝞䝹䜽య⾲㠃䛛䜙 㻠㻌㼙㼙䠅䛾☢᮰ᐦᗘศᕸ䜢 ᐃ䛧䛯䚹䛺䛚䠈䝟䝹䝇☢ሙ䜢༳ຍ䛩䜛㛫㝸䛿䠈☢ሙศᕸ䛾㻲㼕㼓㻚㻌㻝㻚㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌㼛㼚㻌㼠㼔㼑㻌㼜㼛㼘㼑㻌㼟㼡㼞㼒㼍㼏㼑㻌ᐃ᫬㛫䜢ྵ䜑

㻌䛶 㻥㻜 ศ⛬ᗘ䛷䛒䜛䚹㻌㻟䠊⤖ᯝ䛚䜘䜃⪃ᐹ㻌ᅗ 㻝㻔㼍㻕䛻 㻣㻚㻜㻙㻡㻚㻠㻙㻡㻚㻠㻌㼀 䛾㡰䛻䝟䝹䝇☢ሙ䜢༳ຍ䛧䛯ሙྜ䠈ྠᅗ㻔㼎㻕䛻 㻣㻚㻜㻙㻟㻚㻥㻙㻟㻚㻝㻌 㼀 䛾ሙྜ䛾☢ᴟ⾲㠃䛻䛚䛡䜛☢ሙศᕸ䜢♧䛩䚹㻔㼍㻕䛾ሙྜ䛿 㻞 Ⓨ┠䛷ᤕᤊ☢ሙ䛜ቑຍ䛩䜛䜒䛾䛾䠈㻟 Ⓨ┠䛷኱䛝䛟ῶᑡ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹୍᪉䠈㻔㼎㻕䛾ሙྜ䛿㻞 Ⓨ┠䛸 㻟 Ⓨ┠䛾☢ሙศᕸ䛻኱䛝䛺㐪䛔䛿䛺䛔䚹㻌ᅗ 㻞 䛻᭱኱ᤕᤊ☢ሙ䛸䝟䝹䝇☢ሙ༳ຍᅇᩘ䛾㛵ಀ䜢♧䛩䚹㻝 Ⓨ┠䛻 㻣㻚㻜㼀 䜢༳ຍ䛧䛯ሙྜ䛿䛔䛪䜜䛾ሙྜ䜒 㻞 Ⓨ┠䛜ቑຍ䛧䛶䛔䜛䛾䛻ᑐ䛧䛶䠈㻝 Ⓨ┠䛻 㻡㻚㻠㼀 䜢༳ຍ䛧䛯ሙྜ䛿䛔䛪䜜䛾ሙྜ䜒 㻞 Ⓨ┠䛜኱䛝䛟ῶᑡ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹཯᚟䝟䝹䝇☢໬ἲ䛷䛿䠈኱䛝䛺☢ሙ䜢༳ຍ䛩䜛䛸䝢䞁䝙䞁䜾ᦆኻ䛻㻲㼕㼓㻚㻌 㻞㻚㻌 㻼㼡㼘㼟㼑㻌 㼚㼡㼙㼎㼑㼞㻌 㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌 㼛㼒㻌 㼠㼔㼑㻌 㼙㼍㼤㼕㼙㼡㼙㻌 㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼛㼚㻌㼠㼔㼑㻌㼜㼛㼘㼑㻌㼟㼡㼞㼒㼍㼏㼑㻚㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a05

Y 系バルク着磁，機械的特性䝞䝹䜽㉸㟁ᑟయ䜈䛾㍈እ䛧㟼☢ሙ୰෭༷䛻䜘䜛ᤕᤊ☢ሙ≉ᛶMagnetic Flux Trapping in Bulk Superconductor under Off-axis Field Cool Magnetizationᮤᬛ䠈࿴Ἠ ඘䠄ᮾிᾏὒ኱Ꮫ䠅䠗஭⏣ ᚭဢ䠄ᗈᓥၟ⯪㧗ᑓ䠅䠗୕ᮌ ᇶᐶ䠈 ᮎᾏ ❳䠄ᮾிᾏὒ኱Ꮫ䠅䠗ᙇ ⋢㬅䠈 ᙇ ᲃፍ䠄ୖᾏ㟁ຊᏛ㝔䠅
LI Zhi, IZUMI Mitsuru (TUMSAT); IDA Tetsuya (NIT Hiroshima College); MIKI Motohiro, MATSUUMI Ryo; (TUMSAT);ZHANG Yufeng, ZHANG Xiaojuan (SHIEP)
E-mail: d142021@kaiyodai.ac.jp
1. Introduction
HTS bulk has a promising performance being able to sustain
higher magnetic field source compared with permanent
magnets (PMs) once activated. The trapping magnetic flux
potential of melt-textured HTS bulk has been reported to 17 T
at 29 K, 11 T at 47 K and 3 T at 77 K [1-3] under field coolingmagnetization (FCM) when external magnetic field is parallelwith c-axis of bulk material. However, more detailed
information about the trapping flux behaviors under off-axis
field cooling magnetization is necessary for engineering
applications of Gd-Ba-C-O bulk. In this paper, we perform
experiments to clarify the trapping flux behaviors of
single-grain bulk Gd-Ba-C-O 60 mm in diameter using off-axis
FCM process with inclination angle ș (ș = 0°, 30°, 45°, 60°
and 90°) at 77K and under 3T, where ș is the angle between
the c-axis and the applied field.

Considering the anisotropic properties of bulks, trapping flux
density distribution in growth sectors and growth sector
boundaries were also analyzed as shown in Fig 1 (c). Four
represent lines were chosen to figure out the trapped flux
behavior.

2. Experimental
A cylindrical GdBCO bulk sample with dimension of I 60 ×
20 mm3 was selected to investigate the corresponding trapping
flux behavior using off-axis FCM method as shown in Fig.1(a).
All these FCM experiments were performed using a 5 T
LTS solenoid magnet system with a 300 mm room temperature
core (JMTD – 5T 300M – PC, Japan Magnet Technology, Inc.).
The field sweep rate was setting at 1.39 mT/s during theexcitation and demagnetization processes. The sample wascooled by liquid nitrogen under 3T with inclined ș of 0°, 30°,45°, 60° and 90° to the c-axis of the sample respectively. For
inclined angle of 90°, we defined the arrangement patternaccording to the angle between the c-axis and the applied fieldon vertical direction, where aligned growth sector boundary(GSB) pattern means one GSB is parallel to the applied field
and misaligned GSB pattern means one GSB has a 45° angle
with the applied field as shown in Fig. 1(b). We chose those
two magnetization arrangement geometries to further explore
the influence of anisotropic properties of bulks on the trapping
flux behaviors. After demagnetization process, a 15-minutetime interval before measurement was requisite considering
possible relaxation influence on the trapping flux behaviors.
Lastly, the trapping flux distribution was measured at every 1
mm distant by a cryogenic Bell Hall sensor (BHT921)
mounted on an X-Y-Z movable platform with measurement
range of 70 × 70 mm2 above the a-b plane. The total gap
between the target surface of the sample and the active area of
the Bell Hall sensor was strictly adjusted to 0.5 mm, including
the thickness of protection mould of sensor 0.3mm.

Figure 1 (a) Experiments for measuring trapping flux behavior
under off-axis FCM; (b) Applied flux polarization
configuration for GSB; (c) The four chosen area for trapping
flux behavior analysis including GSB and GS areas.

3. Experiment Results and Analysis
Particularly high trapped fields were achieved when ș is 0°,with a maximum value of 1.60 T. Figure 1 (a) shows theexperiment setup for measuring trapping flux behavior under
off-axis FCM method.
We can find the peak value of trapping flux density
decreases monotonously with the increasing ș. The peaktrapped flux density doesn’t change obviously till ș is 30°, asmuch as 96.25% of the ș = 0° condition. The bulk can still trap
1.07 T under 45° inclination, equaling 85 % of ș = 0° condition.
The peak value decreases rapidly when the ș is larger than 60°.

Figure 2. Influence of inclination angle of applied magnetic
field on trapped flux density peak value and integrated trappedflux.

4. Conclusion
We have performed the experiment to clarify the trapping
flux behavior of Gd-Ba-C-O under off-axis field coolingmagnetization method. The maximum trapped field decreases
monotonously and the ratio of trapped flux area over Baveincreases with increasing inclination angle. Till ș =30°, theintegrated trapped flux doesn’t change obviously. These results
give us more support for the future design of the applied HTS
machines magnetization system.
Reference
1. Tomita, M., Murakami, M.: Nature 421, 517 (2003).
2. Gruss, S., Fuchs, G., Krabbes, G., et al.: Appl. Phys. Lett. 79,
3131 (2001).
3. Nariki, S., Sakai, N., Murakami, M.: Supercond. Sci.
Technol. 18, S126 (2005).㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a06

Y 系バルク着磁，機械的特性䝸䞁䜾≧ 㻽㻹㻳㼹䝞䝹䜽䝬䜾䝛䝑䝖䛾పᙉ☢ሙ╔☢䛸䜂䛪䜏≉ᛶ㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼍㼚㼐㻌㼟㼠㼞㼍㼕㼚㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼛㼚㻌㼔㼕㼓㼔㻌㼒㼕㼑㼘㼐㻌㻽㻹㻳㻌㼞㼕㼚㼓㻌㼎㼡㼘㼗㻌㼙㼍㼓㼚㼑㼠㻌㼍㼠㻌㼘㼛㼣㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌 㻌̿̿

Trapped field(T)

Change of strain 䠄¨ȝİ䠅Trapped field(T)

Change of strain 䠄¨ȝİ䠅㻌᳃⏣㻌 ඘䠈ᡭᔱ㻌 ⱥ୍䠈ᡂᮌ㻌 ⤀ஓ䠄᪂᪥㚩ఫ㔠䠅㻌㻹㻻㻾㻵㼀㻭㻌㻹㼕㼠㼟㼡㼞㼡㻘㻌㼀㻱㻿㻴㻵㻹㻭㻌㻴㼕㼐㼑㼗㼍㼦㼡㻘㻌㻺㻭㻾㻵㻷㻵㻌㻿㼔㼕㼚㼥㼍㻌㻔㻺㻿㻿㻹㻯㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼙㼛㼞㼕㼠㼍㻚㼐㻥㻤㻚㼙㼕㼠㼟㼡㼞㼡㻬㼖㼜㻚㼚㼟㼟㼙㼏㻚㼏㼛㼙㻌㻌㻌㻝䠊䛿䛨䜑䛻㻌
䕔
thermometer䖃
QMG ring㻌ඃ䜜䛯≉ᛶ䜢᭷䛩䜛 㻽㻹㻳㼹䠄༢⤖ᬗ≧䛾 㻝㻞㻟 ┦୰䛻 㻞㻝㻝䕦䕦䕺 20.0mm
SUS ring䖃㻌┦䛜ᚤ⣽ศᩓ䛧䛯䝞䝹䜽≧㓟໬≀㉸㟁ᑟᮦᩱ䠅䛿䚸㻝㻥㻤㻤 ᖺ䕔Strain gauge
20.0mm㻌䛻ึ䜑䛶㛤Ⓨ䛥䜜䛯 㻝㻙㻠䠅䚹䛭䛾ᚋ䚸ᕼᅵ㢮ඖ⣲䠄㻾㻱䠅䜢⨨᥮䛧䕦䖃䕺
28.0mm㼹㻌䛯✀⤖ᬗ䜢౑⏝䛩䜛༢⤖ᬗ⫱ᡂᢏ⾡䛻䜘䜚኱ᆺ䛾 㻽㻹㻳 䛜
Strain gauge
60.0mm㻌〇㐀ྍ⬟䛸䛺䜚䚸✀䚻䛾ᛂ⏝㛤Ⓨ䛜㐍䜑䜙䜜䛯䚹 㻡㻙㻢䠅䝞䝹䜽䝬Hall probe
80.0mm䜾䝛䝑䝖ᛂ⏝䛿䚸㻝㻥㻤㻥 ᖺ䛻ᥦ᱌䛥䜜䚸㻾㻱 ⨨᥮✀⤖ᬗᢏ⾡䛻䜘㻌㻲㼕㼓㻚㻝㻌㻭㼞㼞㼍㼚㼓㼑㼙㼑㼚㼠㻌㼛㼒㻌㻽㻹㻳㻌㼞㼕㼚㼓㼟㻌㼍㼚㼐㻌㼟㼑㼚㼟㼛㼞㼟㻌䜚䛭䛾ᇶᮏᙧ䛜᏶ᡂ䛧䛯 㻣㻙㻤䠅䚹᭱㏆䛷䛿䚸≉䛻ప 䞉ᙉ☢ሙ䛷㻌䛾╔☢䛻䜘䜚ᩘ 㼀 䛾☢ሙ䛜ᤕᤊྍ⬟䛸䛺䜚䚸ྛ✀䛾䝞䝹䜽䝬
1,000
10
1,0
㻌
䜾䝛䝑䝖ᛂ⏝౛䛜ሗ࿌䛥䜜䛶䛔䜛䚹㻌㻌ᙉ☢ሙ䜢╔☢䛩䜛ሙྜ䚸኱䛝䛺䝣䞊䝥ຊ䛻䜘䜚ヨᩱ䛜䜂䛪
800
8㻌䜏䚸䜔䛜䛶◚ቯ䛻䛔䛯䜛ྍ⬟ᛶ䛜䛒䜛䚹๓ᅇ䚸㻺㻹㻾 䛚䜘䜃་㻌⒪ᛂ⏝䜢ᛕ㢌䛻䚸䝸䞁䜾≧ 㻽㻹㻳㼹䛾ྛ ᗘ䞉༳ຍ☢ሙ᮲௳䛷䚸600
6
㻌ᤕᤊ☢᮰ᐦᗘ䛸䜂䛪䜏䛾㛵ಀ䜢䜂䛪䜏䝀䞊䝆䜢⏝䛔䛯ᐇ㦂inside㻌䛛䜙᫂䜙䛛䛻䛧䛯 㻥䠅䚹௒ᅇ䚸䝸䞁䜾≧ 㻽㻹㻳㼹䝞䝹䜽䝬䜾䝛䝑䝖䛾400
4㻌≉䛻ప 䞉ᙉ☢ሙ㡿ᇦ䛷䛾╔☢㐣⛬䛻䛚䛡䜛ᤕᤊ☢ሙ䛸㻌200
㻽㻹㻳㼹䝸䞁䜾䛾䜂䛪䜏䛸䛾㛵ಀ䜢᫂䜙䛛䛻䛧䛯䛾䛷ሗ࿌䛩䜛䚹㻌2㻌㻌
outside㻌00㻞䠊ᐇ㦂᪉ἲ
0
2
4
6
8
10
㻌
㻞㻙㻝㻌 ヨᩱ‽ഛ䠖⫗ཌ 㻝㻜㼙㼙 䛾䝇䝔䞁䝺䝇䝸䞁䜾䜢ᔐ䜑⿵ᙉ
External field (T)䛧䛯እᚄ 㻢㻜䡉䡉䚸ෆᚄ 㻞㻤䡉䡉䚸ཌ䛥 㻞㻜䡉䡉䛾䝸䞁䜾ヨᩱ䜢 㻞㻲㼕㼓㻚㻞㻌㻯㼔㼍㼚㼓㼑㻌㼛㼒㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼍㼚㼐㻌㼟㼠㼞㼍㼕㼚㻌㼕㼚㻌㼑㼍㼏㼔㻌㼙㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌ಶ✚ᒙ䛧ヨᩱ䜢స〇䚹ୖẁ䛾䝸䞁䜾䛾ෆ࿘㠃䚸⿵ᙉ䝸䞁䜾䛾
120
1200
㻌
እ࿘㠃䛻䜂䛪䜏䝀䞊䝆䜢㈞䜚䛴䛡䛯䚹䜎䛯䚸䝙ẁ䛻㔜䛽䛯䝸䞁㻌䜾୰ኸ䛻䝩䞊䝹⣲Ꮚ䜢㓄⨨䛧䛯䚹ヨᩱ䛿ୗ㠃䜢෭෾ᶵ䛾䝁
100
1000
㻌
䞊䝹䝗䝦䝑䝗䛻䜾䝸䞊䝇䛷ᅛᐃ䛧䛯䚹㻲㼕㼓㻚㻝 䛻ヨᩱ䛚䜘䜃䝉䞁䝃
80800
㻌
䞊䛾㓄⨨䜢♧䛩䚹㻌㻌㻞㻙㻞㻌 ᐃ᪉ἲ䠖㻌 㻥㻡㻷 䛷 㻥㼀 䛚䜘䜃 㻝㻜㼀 䛾☢ሙ䜢༳ຍ䛧䚸
60
600
inside㻌㻞㻜㻷 䛻෭༷䛧䛯䚹䛣䛾᫬䛾䜂䛪䜏䝀䞊䝆䛾್䜢ᇶ‽䛻䚸╔☢
40400
㻌
㐣⛬䛷䜂䛪䜏ኚ໬㔞䛚䜘䜃☢᮰ᐦᗘ䜢グ㘓䛧䛯䚹䜎䛯 㻞㻜㻷㻌䛷 㻝㻜㼀 ╔☢ᚋ䚸㻥㻡㻷 䜎䛷 㻜㻚㻝㻷㻛ศ䛷᪼ 䛧䚸ᤕᤊ☢᮰ᐦᗘ䛚
20200㻌
䜘䜃䜂䛪䜏ኚ໬㔞䛾 ᗘ౫Ꮡᛶ䜢 ᐃ䛧䛯䚹㻌
outside
0
0
㻌
㻌
0
20
40
60
80
100
㻟䠊ᐇ㦂⤖ᯝ䞉⪃ᐹ㻌Temperature (K)㻲㼕㼓㻚㻟㻌㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼍㼚㼐㻌㼟㼠㼞㼍㼕㼚㻌㻞㻜㻷䚸㻥㼀 䛚䜘䜃 㻝㻜㼀 䛷䛾╔☢㐣⛬䛻䛚䛡䜛䜂䛪䜏ኚ໬㔞䛚䜘䜃䝸䞁䜾ෆ䛾☢᮰ᐦᗘ䛛䜙እ㒊☢ሙ䜢ᕪ䛧ᘬ䛔䛯 㻽㻹㻳㼹ཧ⪃ᩥ⊩㻌䝸䞁䜾䛜ᤕᤊ䛧䛶䛔䜛☢᮰ᐦᗘ䜢 㻲㼕㼓㻚㻞 䛻♧䛩䚹㻌㻝㻚㻌 ᳃⏣඘䠈ᯇ⏣᫛୍䠖㻺㼑㼣㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㻹㼍㼠㼑㼞㼕㼍㼘㼟㻌㻲㼛㼞㼡㼙㻌㻲㼕㼓㻚㻞 䛛䜙䚸ୖグᙧ≧䛾䠭䠩䠣㼹䝸䞁䜾䜢஧ẁ䛻✚ᒙ䛩䜛䛣䛸㻺㼑㼣㼟䠈㻌 㻺㼛㻝㻜㻌㻔㻝㻥㻤㻤㻕㻌㻝㻡㻌䛻䜘䛳䛶䚸㻥䠰䛚䜘䜃 㻝㻜㼀 䛾༳ຍ☢ሙ䜢䜋䜌ಖᣢ䛧╔☢䛷䛝䛶㻞㻚㻌 㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼍㼠㼑㼚㼠㻌㻺㼛㻚㻌㼁㻿㻙㻡㻡㻜㻤㻞㻡㻟㻘䛔䜛䛣䛸䛜ศ䛛䜛䚹䜎䛯䚸ୖẁ䛾䠭䠩䠣㼹䝸䞁䜾䛾ෆ࿘⾲㠃䛷䛿䚸㻼㼞㼕㼛㼞㼕㼠㼥㻌㼐㼍㼠㼑㻦㻌 㻜㻢㻚㻜㻢㻚㻝㻥㻤㻤㻌㻝㻜㼀 ╔☢䛷䚸䜂䛪䜏ኚ໬㔞䛿 㻢㻤㻡䃛䃔䛻㐩䛩䜛䜒䛾䛾๭䜜䜛㻟㻚㻌 㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻌㻝㻣㻞㻔㻝㻥㻥㻜㻕㻟㻤㻟㻙㻟㻤㻣㻌䛣䛸䛺䛟 㻝㻜䠰䜢ᤕᤊ䛧䛶䛔䜛䚹㻌㻌 㻌 㻌 >ཧ⪃ᩥ⊩  ࡢⱥヂ@㻌㻲㼕㼓㻚㻟 䛻 㻝㻜䠰╔☢ᚋ䛾ᤕᤊ☢᮰ᐦᗘ䛚䜘䜃ྛ఩⨨䛷䛾ᤕ㻠㻚㻌 ᳃⏣㻌 ඘➼䠖≉チⓏ㘓␒ྕ䠖㻞㻡㻡㻢㻠㻜㻝㻌ᤊ☢ሙ䛻䜘䜛䜂䛪䜏ኚ໬㔞䛾 ᗘ౫Ꮡᛶ䜢♧䛩䚹䛣䛾᫬䚸䜂㻡㻚㻌 ᳃⏣㻌 ඘䠖༤ኈㄽᩥ䛂⁐⼥ᡂ㛗ἲ䛻䜘䜛኱ᆺ㓟໬≀㻌䛪䜏䝀䞊䝆䛾್䛿䚸 ᗘኚ໬䛻䜘䜚ኚ໬䛩䜛䛯䜑䚸䜂䛪䜏ኚ㉸ఏᑟయ䛾స〇䛸㧗⮫⏺㟁ὶᐦᗘ໬䛻㛵䛩䜛◊✲䛃㻌໬㔞䛿䚸☢ሙ୰෭༷᫬䛾䜂䛪䜏䝀䞊䝆䛾್䜢ᇶ‽䛻䛧䛯䚹໭ᾏ㐨኱ᏛᏛ⾡ᡂᯝ䝁䝺䜽䝅䝵䞁䠄㻴㼁㻿㻭㻯㻼䠅䚸㻌ᤕᤊ☢᮰ᐦᗘ䛾 ᗘ౫Ꮡᛶ䛜 㻡㻡䠧௜㏆䛛䜙పୗ䛧䛶䛔䜛䛣䛸㼔㼠㼠㼜㻦㻛㻛㼑㼜㼞㼕㼚㼠㼟㻚㼘㼕㼎㻚㼔㼛㼗㼡㼐㼍㼕㻚㼍㼏㻚㼖㼜㻛㼐㼟㼜㼍㼏㼑㻛㻌䛛䜙䚸⣙ 㻡㻡䠧௨ୖ䛾 ᗘ䛷䠭䠩䠣㼹䝸䞁䜾䛜䝣䝹╔☢≧ែ䛻䛺㻢㻚㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻭㼐㼢㼍㼚㼏㼑㼟㻌㼕㼚㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼢㼕㼠㼥䊢㻌䛳䛶䛔䜛䛣䛸䛜ศ䛛䜛䚹䜎䛯䚸㧗 ഃ䛛䜙䛾䝣䝹╔☢≧ែ䛾እ㻌 㻔㻝㻥㻥㻝㻕㻣㻟㻟㻌ᤄ⥺䛛䜙䚸༑ศ䛺⿵ᙉ䛜䛺䛥䜜䛯ሙྜ䚸㻟㻜䠧䛷 㻞㻜䠰⣭䛾╔☢
㻣㻚㻌 ᳃⏣㻌 ඘㻦㻌 ≉チⓏ㘓␒ྕ䠖㻞㻜㻡㻡㻡㻝㻝㻌䛜ྍ⬟䛸䛺䜛䛣䛸䛜ศ䛛䛳䛯䚹㻌㻤㻚㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌 㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌㻯㻿㻶㻌㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌㼂㼛㼘㻚㻌㻠㻝㻌௒ᚋ䛿䚸䠭䠩䠣㼹䝸䞁䜾䛾✚ᒙ≧ែ䜢ኚ䛘䚸✀䚻䛾╔☢᮲௳㻔㻝㻥㻤㻥㻕㻌㼜㻚㻝㻠㻌䛷䛾ᤕᤊ☢᮰ᐦᗘ≉ᛶ䛚䜘䜃䜂䛪䜏≉ᛶ䛻㛵䛧ヲ⣽䛻ㄪ䜉㻥㻚㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌 㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌㻯㻿㻶㻌㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌㼂㼛㼘㻚㻌㻥㻝㻌䜛ணᐃ䛷䛒䜛䚹㻌
㻔㻞㻜㻝㻡㻕㻌㼜㻚㻝㻣㻜㻌㻌
第92回

2015年度秋季低温工学・超電導学会

3C-a07

Y 系バルク着磁，機械的特性䝸䞁䜾≧ 㻳㼐㻙㻮㼍㻙㻯㼡㻙㻻 ㉸㟁ᑟ䝞䝹䜽䛻䛚䛡䜛䝟䝹䝇╔☢≉ᛶ䛸◚ቯᣲື㻌㼀㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼍㼚㼐㻌㼒㼞㼍㼏㼠㼡㼞㼑㻌㼎㼑㼔㼍㼢㼕㼛㼞㻌㼛㼒㻌㻳㼐㻙㻮㼍㻙㻯㼡㻙㻻㻌㼎㼡㼘㼗㻌㼞㼕㼚㼓㻌 㻌㼐㼡㼞㼕㼚㼓㻌㼜㼡㼘㼟㼑㼐㻌㼒㼕㼑㼘㼐㻌㼙㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌

B (T)

㻌
ᮃ᭶㻌 ㇦ᙪ䠈㻌 ෆ⸨㻌 ᬛஅ㻘㻌 ⸨௦㻌 ༤அ㻌 䠄ᒾᡭ኱䠅㻧㻌 ఀ⸨㻌 ెᏕ㻘㻌 ᰗ㻌 㝧௓㻌 䠄䜲䝮䝷ᮦ◊䠅㻧㻌 ௰ᮧ㻌 㧗ᚿ㻌 䠄⌮◊䠅㻌㻹㻻㻯㻴㻵㼆㼁㻷㻵㻌㻴㼕㼐㼑㼔㼕㼗㼛㻘㻌㻺㻭㻵㼀㻻㻌㼀㼛㼙㼛㼥㼡㼗㼕㻘㻌㻲㼁㻶㻵㻿㻴㻵㻾㻻㻌㻴㼕㼞㼛㼥㼡㼗㼕㻌㻔㻵㼣㼍㼠㼑㻌㼁㼚㼕㼢㻚㻕㻧㻌 㻌㻵㼀㻻㻴㻌㼅㼛㼟㼔㼕㼠㼍㼗㼍㻘㻌㼅㻭㻺㻭㻳㻵㻌㼅㼛㼡㼟㼡㼗㼑㻌㻔㻵㻹㼁㻾㻭㻕㻧㻌㻺㻭㻷㻭㻹㼁㻾㻭㻌㼀㼍㼗㼍㼟㼔㼕㻌㻔㻾㻵㻷㻱㻺㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㻞㻞㻝㻠㻜㻟㻡㻬㼕㼣㼍㼠㼑㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
䝹䝇╔☢䛻䛚䛔䛶䛿䝸䞁䜾እഃ䛰䛡䛷䛺䛟䚸䝸䞁䜾ෆഃ䛻䜒ᅽ㏆ᖺ㧗 ㉸㟁ᑟ⥺䜢⏝䛔䛯 㻺㻹㻾 䝬䜾䝛䝑䝖䛾㛤Ⓨ䛜┒䜣⦰ᛂຊ䛻ᑐ䛩䜛⿵ᙉ䝸䞁䜾䛜ᚲせ䛸⪃䛘䜛䚹㻌䛻⾜䜟䜜䛶䛚䜚䚸㻺㻵㻹㻿 䛿ୡ⏺᭱㧗☢ሙ䛷䛒䜛 㻞㻠㻚㻜㻌 㼀㻌 㻔㻝㻜㻞㻜㻌㻌 ㅮ₇䛷䛿䚸ᐇ㦂⤖ᯝ䛸䛸䜒䛻䝟䝹䝇╔☢㐣⛬䛻䛚䛡䜛ᛂຊ㻹㻴䡖㻕䜢Ⓨ⏕䛷䛝䜛 㻺㻹㻾 䝬䜾䝛䝑䝖䜢ᐇ⌧䛧䛯㼇㻝㼉䚹䛧䛛䛧㧗☢
䛾᫬㛫౫Ꮡᛶ䜔⇕ᛂຊ䛾ᚄ౫Ꮡ䜢♧䛧䚸◚ቯᣲື䛻䛴䛔䛶ሙ䜢Ⓨ⏕䛩䜛䛸䛸䜒䛻䚸䝬䜾䝛䝑䝖䛾኱ᆺ໬䛜㐍䜐䛣䛸䜔䚸⥺㆟ㄽ䛩䜛ணᐃ䛷䛒䜛䚹㻌ᮦ䛾㛗ᑻ໬䛾ᅔ㞴䛥䜔〇㐀䝁䝇䝖䜒ၥ㢟䛸䛺䛳䛶䛔䜛䚹
3.5
TS=65 K, Bex=3.10 T㻾㻱㻮㼍㻯㼡㻻㻌 㻔㻾㻱 䛿ᕼᅵ㢮ඖ⣲䜎䛯䛿 㼅㻕䝞䝹䜽䛿 㻝㻣㻌 㼀 ௨ୖ䛾
3☢ሙ䜢Ⓨ⏕䛷䛝䜛䚹ᡃ䚻䛿㉸㟁ᑟ⥺ᮦ䛻䛿䛺䛔䝞䝹䜽䛾≉Bexᚩ䜢⏕䛛䛧䚸䝁䞁䝟䜽䝖䛛䛴ᾮయ䝦䝸䜴䝮෭༷䜢ᚲせ䛸䛧䛺䛔
2.5
㻺㻹㻾 䝞䝹䜽䝬䜾䝛䝑䝖䛾㛤Ⓨ䛻ྲྀ䜚⤌䜣䛷䛔䜛䚹㻺㻹㻾 䝞䝹䜽
2䝬䜾䝛䝑䝖䛾ሗ࿌䛜䛔䛟䛴䛛䛒䜛䛜䚸䛣䜜䜙䛾◊✲䛿㧗☢ሙ䚸
BLC
1.5
㧗Ᏻᐃᛶ䚸㧗ᆒ୍ᛶ䜢ᐇ⌧䛩䜛䛯䜑䛻㉸㟁ᑟ䝬䜾䝛䝑䝖䛻䜘䜛☢ሙ୰෭༷╔☢㻌 㻔㻲㻯㻹㻕䜢⏝䛔䛶䛔䜛㼇㻞㼉䚹䝁䞁䝟䜽䝖䛺䝟䝹1䝇╔☢ἲ㻌 㻔㻼㻲㻹㻕䜢⏝䛔䜛䛣䛸䛜䛷䛝䜜䜀䚸㻺㻹㻾 䝞䝹䜽䝬䜾䝛
0.5
䝑䝖䛾ᐇ⌧䛜⡆౽䛸䛺䜛䚹䜎䛯䚸ᶵᲔⓗᙉᗘ䛾ၥ㢟䛿ᤕᤊ☢
ሙ䛾ྥୖ䛸ྠ䛨䛟㔜せ䛺せ⣲䛷䛒䜛䚹㻾㼑㼚 䜙䛿 㻲㻯㻹 㐣⛬䛻䛚0䛡䜛ᛂຊ䜢ィ⟬䛧䚸䜽䝷䝑䜽䛜㉳Ⅼ䛸䛺䜚䝞䝹䜽䛜◚ᦆ䛩䜛䛣䛸
0
50
100
150
200
䜢ሗ࿌䛧䛯㼇㻟㼉䚹㻶㼛㼔㼍㼚㼟㼑㼚 䛿䝊䝻☢ሙ෭༷╔☢ἲ㻔㼆㻲㻯㻹㻕㐣⛬Time (ms)୰䛾༙ᚄ᪉ྥᛂຊ䛸䝣䞊䝥ᛂຊ䜢ィ⟬䛧䛶䛔䜛㼇㻠㼉䚹䛭䛣䛷ᮏ◊✲䛿 㻼㻲㻹 䛻䜘䜛 㻺㻹㻾 䝞䝹䜽䝬䜾䝛䝑䝖䛾ᐇ⌧䛻ྥ䛡䛶䚸㻲㼕㼓㻚㻌㻝㻌㼀㼕㼙㼑㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼔㼑㻌㼘㼛㼏㼍㼘㻌㼒㼕㼑㼘㼐㻌㻮㻸㻯㻌㼍㼚㼐㻌㼠㼔㼑㻌㼍㼜㼜㼘㼕㼑㼐㻌㻳㼐㻮㼍㻯㼡㻻 䝸 䞁 䜾 䝞 䝹 䜽 䛾 䝟 䝹 䝇 ╔ ☢ ≉ ᛶ 䛸 ᭷ 㝈 せ ⣲ ἲ㻌㼜㼡㼘㼟㼑㼐㻌㼒㼕㼑㼘㼐㻌㻮㼑㼤㻌㼍㼠㻌㼠㼔㼑㻌㼏㼑㼚㼠㼑㼞㻌㼛㼒㻌㼠㼔㼑㻌㼔㼛㼘㼑㻌㼒㼛㼞㻌㻟㻚㻝㻜㻌㼀㻌㼍㼠㻌㻢㻡㻌㻷㻚㻌㼀㼔㼑㻌㻔㻲㻱㻹㻕䛻䜘䜛 㻼㻲㻹 㐣⛬䛻䛚䛡䜛ᛂຊ䜢ゎᯒ䛧䛯䚹㻌㼕㼚㼟㼑㼠㻌㼟㼔㼛㼣㼟㻌㼠㼔㼑㻌㼠㼞㼍㼜㼜㼑㼐㻌㼒㼕㼑㼘㼐㻌㼜㼞㼛㼒㼕㼘㼑㻌㻝㻌㼙㼙㻌㼍㼎㼛㼢㼑㻌㼠㼔㼑㻌㼎㼡㼘㼗㻌㼟㼡㼞㼒㼍㼏㼑㻚㻞䠊ᐇ㦂᪉ἲ㻌ᮏ◊✲䛷⏝䛔䛯 㻳㼐㻮㼍㻯㼡㻻 䝸䞁䜾䝞䝹䜽㻌 㻔㻻㻰㻩㻢㻜㻌 㼙㼙䚸㻵㻰㻩㻟㻢㻌 䟚䚸㼠㻩㻝㻣㻌 䟚㻕䛿ᨵⰋᆺ 㻽㻹㻳 ἲ䛷స〇䛧䛯䚹䛣䛾䝸䞁䜾䝞䝹䜽䛿እഃ䛻⿵ᙉ䜰䝹䝭䝙䜴䝮ྜ㔠䝸䞁䜾䛜タ⨨䛧䛶䛒䜛䚹䝞䝹䜽䛿䝁䞊䝹䝗䝦䝑䝗䛻タ⨨䛧䛯䛾䛱䛻ึᮇ ᗘ 㻢㻡㻌 㻷 䜎䛷㻳㻹 ෭෾ᶵ䛻䜘䜚ఏᑟ෭༷䛧䛯䚹䝟䝹䝇☢ሙ䛿䝋䝺䝜䜲䝗ᆺ㖡䝁䜲䝹䜢⏝䛔䛶༳ຍ䛧䛯䚹ᒁᡤ☢ሙ䛿䝩䞊䝹୰ᚰ䛻タ⨨䛧䛯䝩䞊䝹䝉䞁䝃䞊䛷 ᐃ䛧䚸☢ሙศᕸ䛾㝿䛻䛿䝞䝹䜽⾲㠃 㻝 䟚ୖ᪉䛷㉮ᰝ䛧 ᐃ䛧䛯䚹䜎䛯╔☢㐣⛬䛻䛚䛡䜛ᤕᤊ☢ሙ䛸ᛂຊ䜢䞞䝣䜷䝖䞁䛾 㻼㻴㻻㼀㻻㻙㻱㻰㻰㼅䚸㻼㻴㻻㼀㻻㻙㻱㻸㻭㻿 䛻䜘䜚ゎᯒ䛧䛯䚹䝅䝭䝳䝺䞊䝅䝵䞁䛿 㻻㻰㻩㻢㻜㻌㼙㼙䚸㻵㻰㻩㻜䡚㻟㻢㻌㼙㼙 䛾↓㝈㛗䝸䞁䜾䝞䝹䜽䜢᝿ᐃ䛧䚸እ㒊☢ሙ䛻౫Ꮡ䛧䛺䛔 㻮㼑㼍㼚 䝰䝕䝹䜢⏝䛔䛯䚹⮫⏺㟁ὶᐦᗘ䛿 㻞㻚㻞㻡㼤㻝㻜㻤㻌 㻭㻛㼙㻞 䛸䛧䛯䚹䜎䛯䚸㻟㻜㻜㻌 㻷䛛䜙 㻢㻡㻌㻷 䛻෭༷䛧䛯㝿䛾⇕ᛂຊ䜢ゎᯒ䛧䛯䚹㻌㻟䠊ᐇ㦂⤖ᯝ䛸ゎᯒ⤖ᯝ㻌䠢䡅䡃㻚㻌㻝 䛻༳ຍ☢ሙ 㻮㼑㼤㻩㻟㻚㻝㻜㻌㼀 䛻䛚䛡䜛ᒁᡤ☢ሙ䛸༳ຍ☢
ሙ䛾᫬㛫౫Ꮡᛶ䜢♧䛩䚹㻞㻠㻌㼙㼟 䛻䛚䛔䛶☢᮰䛜ᛴ⃭䛻䝞䝹䜽୰ᚰ䛻౵ධ䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛷䛝䚸᭱⤊ⓗ䛻䝩䞊䝹୰ᚰ䛷䛿䝬䜲䝘䝇䛾☢ሙ䛸䛺䛳䛯䚹ᤄධᅗ䛿 㻮㼑㼤㻩㻟㻚㻝㻜㻌 㼀 䛾䝞䝹䜽⾲㠃 㻝 䟚ୖ᪉䛻䛚䛡䜛☢ሙศᕸ䜢♧䛩䚹ᕥୗ䛻Ḟ䛡䛜ぢ䜙䜜䚸㉸㟁ᑟ㟁ὶ䛜Ḟ䛡㒊ศ䜢㎽ᅇ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹㻌䠢䡅䡃㻚㻌 㻞 䛻㻌 㻔㼍㻕䝸䞁䜾䝞䝹䜽㻌 㻔㻻㻰㻩㻢㻜㻌 㼙㼙㻘㻌 㻵㻰㻩㻟㻢㻌 㼙㼙㻕䛸㻌 㻔㼎㻕䝕䜱䝇䜽䝞䝹䜽㻌 㻔㻻㻰㻩㻢㻜㻌 㼙㼙㻕䛻䛚䛡䜛෭༷䛻䜘䜛⇕ᛂຊ䚸ྛ༳ຍ☢ሙ䛻䛚䛡䜛᭱኱䝣䞊䝥ᛂຊ䛸䚸䛣䛾 㻞 䛴䛾ྜィ䜢♧䛩䚹䝸䞁䜾䝞䝹䜽䛿䝕䜱䝇䜽䝞䝹䜽䛻ẚ䜉኱䛝䛺ᅽ⦰ᛂຊ䛜ຍ䜟䛳䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹᭦䛻䝸䞁䜾䝞䝹䜽䛻䛚䛔䛶⇕ᛂຊ䛰䛡䛷䜒⣙ 㻥㻜㻌㻹㻼㼍 䛾ᅽ⦰ᛂຊ䛜䛛䛛䛳䛶䛔䜛䚹㻮㼑㼤㻩㻟㻌㼀 ௨ୖ༳ຍ䛩䜛䛸䝞䝹䜽䛻䛿 㻝㻜㻜㻌㻹㻼㼍 ௨ୖ䛾ᛂຊ䛜ຍ䛘䜙䜜䜛䛣䛸䛛䜙䚸䝟㻌 㻲㼕㼓㻚㻌㻞㻌㼀㼔㼑㻌㼍㼜㼜㼘㼕㼑㼐㻌㼜㼡㼘㼟㼑㼐㻌㼒㼕㼑㼘㼐㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼔㼑㻌㼙㼍㼤㼕㼙㼡㼙㻌㻌 㼔㼛㼛㼜㻌㼟㼠㼞㼑㼟㼟㻌㼍㼠㻌㻢㻡㻌㻷㻌㼒㼛㼞㻌㼠㼔㼑㻌㻔㼍㻕㻌㼏㼥㼘㼕㼚㼐㼞㼕㼏㼍㼘㻌㼎㼡㼘㼗㻌㻔㻻㻰㻌㻩㻌㻢㻜㻌㼙㼙㻘㻌㻵㻰㻌㻩㻌㻟㻢㻌㼙㼙㻕㻌㼍㼚㼐㻌㻔㼎㻕㻌㼐㼕㼟㼗㻌㼎㼡㼘㼗㻌㻔㻻㻰㻌㻩㻌㻢㻜㻌㼙㼙㻕㻚㻌㻌㻌ㅰ㎡㻌ᮏ◊✲䛿䚸⛉Ꮫ◊✲㈝⿵ຓ㔠㻔㻝㻡㻷㻜㻠㻢㻠㻢㻕ཬ䜃䚸ᅜ❧◊✲
㛤Ⓨἲே᪥ᮏ་⒪◊✲㛤Ⓨᶵᵓ㻔㻭㻹㻱㻰㻕䛾ᨭ᥼䛻䜘䛳䛶⾜
䜟䜜䛯䚹㻌
㻌
ཧ⪃ᩥ⊩㻌
㼇㻝㼉㻌㻷㻚㻌㻴㼍㼟㼔㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻶㻚㻌㻹㼍㼓㼚㻚㻌㻾㼑㼟㼛㼚㻚㻌㼢㼛㼘㻚㻌㻞㻡㻢㻌㻔㻞㻜㻝㻡㻕㻌㼜㼜㻚㻟㻜㻙㻟㻟㻌㼇㻞㼉㻌౛䛘䜀䚸㼀㻚㻌㻺㼍㼗㼍㼙㼡㼞㼍㻌 㼑㼠㻌㼍㼘㻚㻦㻌㻯㼛㼚㼏㼑㼜㼠㼟㻌㻹㼍㼓㼚㻚㻌㻾㼑㼟㼛㼚㻚㻌㻼㼍㼞㼠㻌㻮㻌㻟㻝㻮㻌㻔㻞㻜㻜㻣㻕㻌㼜㼜㻚㻢㻡㻙㻢㻥㻌㼇㻟㼉㻌㼅㻚㻌㻾㼑㼚㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻌㼢㼛㼘㻚㻌㻞㻡㻝㻌㻔㻝㻥㻥㻡㻕㻌㼜㼜㻚㻝㻡㻙㻞㻢㻌㼇㻠㼉㻌㼀㻚㻌㻴㻚㻌㻶㼛㼔㼍㼚㼟㼑㼚㻦㻌㻼㼔㼥㼟㻚㻌㻾㼑㼢㻚㻌㻮㻌㼢㼛㼘㻚㻌㻢㻜㻌㻔㻝㻥㻥㻝㻕㻌㼜㼜㻚㻥㻢㻥㻜㻙㻥㻣㻜㻟㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a08

Y 系線材ప䝁䝇䝖䝁䞊䝖⥺ᮦ㛤Ⓨ䛻ྥ䛡䛶 㻺㼎 䝗䞊䝥 㻿㼞㼀㼕㻻㻟 䝞䝑䝣䜯䞊ᒙ䜢⏝䛔䛯㻌㻾㻱㻝㻞㻟 䝁䞊䝖⥺ᮦ䛾ᚤ⣽ᵓ㐀㻌㻹㼕㼏㼞㼛㼟㼠㼞㼡㼏㼠㼡㼞㼑㼟㻌㼛㼒㻌㻾㻱㻝㻞㻟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼡㼟㼕㼚㼓㻌㻺㼎㻙㼐㼛㼜㼑㼐㻌㻿㼞㼀㼕㻻㻟㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻌㼠㼛㼣㼍㼞㼐㻌㼐㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㼘㼛㼣㻙㼏㼛㼟㼠㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㻌୍℩㻌 ୰䠄㟁୰◊䠈㻶㻿㼀㻙㻭㻸㻯㻭䠅㻧ᶫᮏ㻌 ┿ᖾ䠄ி኱ᕤ䠅䠗ᇼ஭㻌 ⁠䠈ᅵ஭㻌 ಇဢ䠄ி኱ᕤ䠈㻶㻿㼀㻙㻭㻸㻯㻭䠅㻌㻵㻯㻴㻵㻺㻻㻿㻱㻌㻭㼠㼍㼞㼡㻌㻔㻯㻾㻵㻱㻼㻵䠈㻶㻿㼀㻙㻭㻸㻯㻭㻕㻧㻌㻴㻭㻿㻴㻵㻹㻻㼀㻻㻌㻹㼍㼟㼍㼥㼡㼗㼕㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㻚㻕㻧㻌 㻌㻴㻻㻾㻵㻵㻌㻿㼔㼕㼓㼑㼞㼡㻘㻌㻰㻻㻵㻌㼀㼛㼟㼔㼕㼥㼍㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㻚㻘㻌㻶㻿㼀㻙㻭㻸㻯㻭㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼍㼕㻬㼏㼞㼕㼑㼜㼕㻚㼐㼑㼚㼗㼑㼚㻚㼛㼞㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌㻾㻱 ⣔㉸㟁ᑟ䛾䝁䞊䝔䝑䝗䝁䞁䝎䜽䝍䞊䛿䠈ᾮయ❅⣲෭༷䛻䜘䜛౑⏝᮲௳䛾ୗ䠈☢ሙ䛜ຍ䜟䛳䛯㝿䛻⮫⏺㟁ὶᐦᗘ䛾పୗ䛜ᑡ䛺䛔ᮦᩱ䛸䛧䛶䠈㉸㟁ᑟᶵჾ䜈䛾㐺⏝䛜ᮇᚅ䛥䜜䛶䛔䜛䚹䛥䜙䛻䠈㟁Ẽⓗಖㆤᒙ䛾୍㒊䛻㖟䜢౑⏝䛧䛶䛔䜛䛜䠈㛗ᑻ໬䛜㐍䜣䛷䛔䜛 㻮㼕㻞㻞㻞㻟 㖟䝅䞊䝇⥺ᮦ䛻ẚ䜉䜛䛸㖟䛾౑⏝㔞䛜ᑡ䛺䛔䛯䜑ప䝁䝇䝖໬䜒ᮇᚅ䛥䜜䠈◊✲㛤Ⓨ䛜㐍䜑䜙䜜䛶䛝䛯䚹䛭䛾⤖ᯝ䠈⮫⏺㟁ὶ≉ᛶ䛻䛚䛔䛶䛿䠈㉸㟁ᑟᶵჾ䛾タィ䛜ồ䜑䜛≉ᛶ䜢䜋䜌㐩ᡂ䛩䜛䛸䛣䜝䜎䛷䛻⮳䛳䛶䛔䜛䚹䛧䛛䛧䠈䝁䝇䝖㠃䛷䛿㔞⏘໬䛸䛔䛖䝣䜯䜽䝍䞊䜢ຍ䛘䛯䛸䛧䛶䜒䠈⥺ᮦ౯᱁䛿㧗䛟䠈㉸㟁ᑟᶵჾ䛾ᐇ⌧䛻䛿䠈⥺ᮦ䛾ప䝁䝇䝖໬䛜ᚲせ୙ྍḞ䛷䛒䜛䚹⥺ᮦ䛾䝁䝇䝖䛸䛧䛶䛿䠈〇㐀䝥䝻䝉䝇䝁䝇䝖䛸ᮦᩱ䝁䝇䝖䛻኱ู䛥䜜䠈〇㐀䝥䝻䝉䝇䝁䝇䝖䛿〇㐀㐣⛬䛾ຠ⋡໬䠈䝬䝇䝥䝻䝎䜽䝖໬䛻䜘䜚పῶ䛜ᅗ䜙䜜䜛䛜䠈ᮦᩱ䝁䝇䝖䛿ᮦᩱ䜢ぢ┤䛥䛺䛔㝈䜚ప䝁䝇䝖໬䛜ᐇ⌧䛷䛝䛺䛔䚹䛭䛣䛷䠈⌧ᅾ䛾䝁䞊䝔䝑䝗䝁䞁䝎䜽䝍䞊䛾ᮦᩱ䝁䝇䝖䜢ぢ✚䜛䛸䠈య✚䛜኱䛝䛟䠈ẚ㍑ⓗ㧗౯䛷䛒䜛㔠ᒓᇶᮦ䠈䜎䛯䛿䠈య✚䛸䛧䛶䛿䛒䜎䜚኱䛝䛟䛺䛔䛜䠈ᩘ䝭䜽䝻䞁䛾ཌ䛥䜢᭷䛩䜛㖟䛾䝁䝇䝖䛜㧗䛔䛣䛸䛜ศ䛛䛳䛯䚹௨ୖ䛾䛣䛸䛛䜙䠈㔠ᒓᇶᮦ䛻䝁䝰䞁䝯䝍䝹䜢⏝䛔䠈㖟䛚䜘䜃㖡䛻䜘䜛㟁Ẽಖㆤᒙ䜢↓䛟䛧䠈䛭䛾௦䜟䜚䜢㔠ᒓᇶᮦ䛻㟁Ẽಖㆤᒙ䛾ᙺ๭䜢ᣢ䛯䛫䛯᪂䛯䛺ᒙᵓᡂ䛾䝁䞊䝔䝑䝗䝁䞁䝎䜽䝍䞊䛾㛤Ⓨ䜢ヨ䜏䛯䚹㟁Ẽಖㆤᒙ䛾ᙺ๭䜢㔠ᒓᇶᮦ䛻ᣢ䛯䛫䜛䛯䜑䛻䛿䠈ᑟ㟁ᛶ䛾୰㛫ᒙ䛜ᚲせ䛷䛒䜚䠈௒ᅇ䛿䝙䜸䝤䜢ῧຍ䛧䛯 㻿㼞㼀㼕㻻㻟 ୰㛫ᒙ䜢⏝䛔䛶㉸㟁ᑟ䝔䞊䝥䜢స〇䛧䛯䚹ᚓ䜙䜜䛯㉸㟁ᑟ䝔䞊䝥䛾 㻣㻣㻷䠈⮬ᕫ☢ሙ䛾⮫⏺㟁ὶᐦᗘ䛿 㻞㻚㻢㻹㻭㻛䠿䡉㻞 䛷Ⰻዲ䛺≉ᛶ䜢♧䛧䛯䛾䛷䠈ෆ㒊⤌⧊
䜢㏱㐣ᆺ㟁Ꮚ㢧ᚤ㙾䛷ほᐹ䛧䛯䚹㻌㻌㻞䠊ᐇ㦂᪉ἲ㻌㔠ᒓ䝔䞊䝥⥺ᮦ䛿⏣୰㈗㔠ᒓᕤᴗ䠄ᰴ䠅〇䛾䜒䛾䜢౑⏝䛧䛯䚹㔠ᒓ䝔䞊䝥⥺ᮦ䛿䝇䝔䞁䝺䝇⿵ᙉ䛧䛯஧㍈㓄ྥ㖡䝔䞊䝥ୖ䛻ⷧ䛔䝙䝑䜿䝹ᒙ䜢䝯䝑䜻䛧䛯䜒䛾䛷䛒䜛䚹ᑟ㟁ᛶ䝞䝑䝣䜯䞊ᒙ䛸䛧䛶䝙䜸䝤䜢ῧຍ䛧䛯 㻿㼞㼀㻵㻻㻟 䜢䝟䝹䝇䝺䞊䝄䞊⵨╔ἲ䛷స〇䛧䛯䚹䛭䛾ᚋ䠈㼅㻮㻯㻻 ᒙ䜢ྠᵝ䛻䝟䝹䝇䝺䞊䝄䞊⵨╔ἲ䛷స〇䛧䛯䚹䝙䜸䝤䜢ῧຍ䛧䛯 㻿㼞㼀㼕㻻㻟 䛸 㼅㻮㻯㻻 䛾స〇᮲௳䜢⾲ 㻝 䛻䜎䛸䜑䜛䚹㻌᩿㠃䛾ᚤ⣽⤌⧊ほᐹ䛿㞟᮰䜲䜸䞁䝡䞊䝮㻔㻲㻵㻮㻕⿦⨨䜢⏝䛔䛶㉸㟁ᑟ䝔䞊䝥⥺ᮦ䛾௵ព䛾ሙᡤ䛛䜙䠈ษ䜚ฟ䛧䠈ⷧ∦໬
䛧䛶㏱㐣ᆺ㟁Ꮚ㢧ᚤ㙾ほᐹヨᩱ䜢స〇䛧䛯䚹ᚤ⣽⤌⧊ほᐹ䛿 㻶㻱㻻㻸㻶㻱㻹㻙㻞㻝㻜㻜㻲 䛷⾜䛔䠈᩿㠃⤌⧊ほᐹ䜢⾜䛖䛸䛸䜒䛻䠈⤖ᬗ㓄ྥ䜢ㄪ䜉䜛䛯䜑䛻ไ㝈ど㔝㟁Ꮚ⥺ᅇᢡ䜎䛯䛿䝘䝜䝡䞊䝮㟁Ꮚ⥺ᅇᢡ䜢⾜䛳䛯䚹䛥䜙䛻䠈⤌ᡂ䛾ᆒ୍ᛶ➼䜢ㄪ䜉䜛䛯䜑䛻䜶䝛䝹䜼䞊ศᩓᆺ䠴⥺ศග⿦⨨㻔㻱㻰㼄㻕䜢⏝䛔䛶ඖ⣲ศᯒ䜢⾜䛳䛯䚹㻌
㻌㻟䠊ᐇ㦂⤖ᯝ䛚䜘䜃⪃ᐹ㻌ᅗ䠍䛻㉸㟁ᑟ䝔䞊䝥䛾᩿㠃⤌⧊䛾 㻿㼀㻱㻹 ീ䜢♧䛩䚹䝙䜸䝤ῧຍ䛧䛯 㻿㼞㼀㼕㻻㻟 ᒙ䛚䜘䜃 㼅㻮㻯㻻 ᒙ䛿ᆒ୍䛺⤌⧊䜢᭷䛩䜛䛜䠈䝙䝑䜿䝹䛾᭱⾲㠃ᒙ䛻䝁䞁䝖䝷䝇䝖䛾᫂䜛䛔㒊ศ䛜ほᐹ䛥䜜䛯䚹䛣䛾㒊ศ䛜ఱ䛾┦䛷䛒䜛䛛䜢ㄪ䜉䜛䛯䜑䠈㻱㻰㼄 䛷ඖ⣲㼀㼍㼎㼘㼑㻌㻵㻚㻌㻼㼞㼑㼜㼍㼞㼍㼠㼕㼛㼚㻌㼏㼛㼚㼐㼕㼠㼕㼛㼚㼟㻌㼛㼒㻌㼠㼔㼑㻌㼎㼡㼒㼒㼑㼞㻌㼍㼚㼐㻌㼅㻮㻯㻻㻌㼘㼍㼥㼑㼞㼟㻌
Conditions

Nb-doped SrTiO3

YBCO

Wavelength (nm)248

Frequency (Hz)20

2

Laser Energy (mJ)

240

200

2%H2+98%Ar

O2

Gas

248

1.2x10-2

35

Temperature (ºC)

600

790

Thickness (nm)

120

160

Pressure (Pa)䝬䝑䝢䞁䜾䜢⾜䛳䛯䚹䛭䛾⤖ᯝ䜢ᅗ䠎䛻♧䛩䚹ᅗ䠎䜘䜚䝙䝑䜿䝹䛾᭱⾲㠃䛾䝁䞁䝖䝷䝇䝖䛾᫂䜛䛔㒊ศ䛛䜙䛿䝙䝑䜿䝹䛸㓟⣲䛜᳨ฟ䛥䜜䛯䚹୍᪉䠈䝁䞁䝖䝷䝇䝖䛾ᬯ䛔㒊ศ䛛䜙䛿䝙䝑䜿䝹䛾䜏䛜᳨ฟ䛥䜜䠈㓟⣲䛿᳨ฟ䛥䜜䛺䛛䛳䛯䚹䛣䜜䜙䛾䝁䞁䝖䝷䝇䝖䛾㐪䛖㒊ศ䛻㟁Ꮚ⥺䜢⤠䜛䝘䝜䝡䞊䝮㟁Ꮚ⥺ᅇᢡ ᐃ䜢⾜䛳䛯⤖ᯝ䠈㢮ఝ䛾䝟䝍䞊䞁䛾ᅇᢡ䝇䝫䝑䝖䛜ᚓ䜙䜜䛯䛜䠈䝁䞁䝖䝷䝇䛾᫂䜛䛔㒊ศ䛾᱁Ꮚ㛗䛿ᬯ䛔㒊ศ䛾᱁Ꮚ㛗䜘䜚㛗䛔䛣䛸䛜☜ㄆ䛷䛝䛯䚹௨ୖ䛾䛣䛸䛛䜙䠈䝁䞁䝖䝷䝇䝖䛾᫂䜛䛔㒊ศ䛿㓟໬䝙䝑䜿䝹㻔㻜㻚㻠㻝㻣㻤㼚㼙㻕䛷䝙䝑䜿䝹㻔㻜㻚㻟㻡㻞㻠㻕䛸ྠ䛨㓄ྥ䜢᭷䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛷䛝䛯䚹㓟໬䝙䝑䜿䝹䛿㓟⣲ศᅽ䛾㧗䛔 㼅㻮㻯㻻 ᒙస〇᫬䛻⏕ᡂ䛧䛯䛸⪃䛘䜙䜜䜛䚹㓟໬䝙䝑䜿䝹䛾⏕ᡂ䛿ዲ䜎䛧䛟䛺䛔䛜䠈㻞㻜㻜䡚㻟㻜㻜㼚㼙 䛾䝙䝑䜿䝹඲య䛜㓟໬䛧䛶䛔䛺䛔䛣䛸䠈䜎䛯䠈⾲㠃䛾୍㒊䛿㓟໬䛧䛶䛔䛺䛔䛣䛸䛛䜙䠈䝥䝻䝉䝇䛾ᨵⰋ➼䛻䜘䜛⾲㠃㓟໬㜵Ṇ䛾ྍ⬟ᛶ䛜⪃䛘䜙䜜䜛䚹䜎䛯䠈ඖ⣲䝬䝑䝢䞁䜾䛻䛚䛔䛶㖡䛸䝙䝑䜿䝹䛾⏺㠃䛿᫂░䛻ほᐹ䛥䜜䛪䠈┦஫ᣑᩓ䛧䛶䛔䜛䛣䛸䛛䜙䛣䛾⏺㠃䛾᥋ྜ䛿ᙉ䛟䠈๤㞳䛩䜛䛣䛸䛿↓䛔䛸⪃䛘䜙䜜䜛䚹䛥䜙䛻䠈䝙䝑䜿䝹䛾ᣑᩓ䛿䝞䝑䝣䜯䞊ᒙ䛷䝤䝻䝑䜽䛥䜜䛶䛚䜚䠈䛣䜜䛜㧗䛔⮫⏺㟁ὶᐦᗘ䛾せᅉ䛾୍䛴䛸⪃䛘䜙䜜䜛䚹㻌㻲㼕㼓㻚㻝㻌㻯㼞㼛㼟㼟㻙㼟㼑㼏㼠㼕㼛㼚㼍㼘㻌㻿㼀㻱㻹㻌㼕㼙㼍㼓㼑㻌㼛㼒㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼠㼍㼜㼑
㻻

㻺㼕

㻯㼡㻌

㻲㼕㼓㻚㻞㻌㻱㻰㼄㻌㼙㼍㼜㼜㼕㼚㼓㻌㼕㼙㼍㼓㼑㼟㻌㼏㼛㼞㼞㼑㼟㼜㼛㼚㼐㼕㼚㼓㻌㼠㼛㻌㼠㼔㼑㻌㻲㼕㼓㻚㻌㻝㻚㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a09

Y 系線材༢ᒙ䝞䝑䝣䜯䞊㓄ྥ䜽䝷䝑䝗㔠ᒓᇶᯈ䜢⏝䛔䛯ⷧ⭷㧗㉸㟁ᑟ⥺ᮦ䛾㛤Ⓨ㻌㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼛㼚㻌㼍㻌㼟㼕㼚㼓㼘㼑㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻌㼛㼒㻌㼏㼘㼍㼐㻙㼠㼥㼜㼑㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㼟㻌ྜྷཎ㻌 ೺ᙪ䠈ᒣཱྀ㻌 㧗ྐ䠈ᮏ⏣㻌 ඖẼ䠈኱ᮌ㻌 ᗣኴ㑻䠈ᑠす㻌 ᫀஓ䠈Ọ▼㻌 ❳㉳䠄ఫ཭㟁ᕤ䠅㻌㼅㻻㻿㻴㻵㻴㻭㻾㻭㻌㼀㼍㼠㼟㼡㼔㼕㼗㼛䠈㼅㻭㻹㻭㻳㼁㻯㻴㻵㻌㼀㼍㼗㼍㼟㼔㼕䠈㻴㻻㻺㻰㻭㻌㻳㼑㼚㼗㼕䠈㻻㻴㻷㻵㻌㻷㼛㼠㼍㼞㼛䠈㻷㻻㻺㻵㻿㻴㻵㻌㻹㼍㼟㼍㼥㼍䠈㻺㻭㻳㻭㻵㻿㻴㻵㻌㼀㼍㼠㼟㼡㼛㼗㼕㻌㻔㻿㼡㼙㼕㼠㼛㼙㼛㻌㻱㼘㼑㼏㼠㼞㼕㼏㻌㻵㼚㼐㼡㼟㼠㼞㼕㼑㼟㻘㻌㻸㼠㼐㻚㻕㻌 㻌㻱㻙㼙㼍㼕㼘㻦㻌㼥㼛㼟㼔㼕㼔㼍㼞㼍㻙㼠㼍㼠㼟㼡㼔㼕㼗㼛㻬㼟㼑㼕㻚㼏㼛㻚㼖㼜㻌㻝䠊䛿䛨䜑䛻㻌
䜿䞊䝤䝹䜔䝬䜾䝛䝑䝖➼䛾㉸㟁ᑟᛂ⏝ᶵჾ䜈䛾㐺⏝䜢┠ᣦ䛧䚸㻾㻱㻮㻯㻻㻔㻾㻱䠖ᕼᅵ㢮ඖ⣲㻕⣔ⷧ⭷㉸㟁ᑟ⥺ᮦ䛾㛤Ⓨ䜢㐍䜑䛶䛔䜛䚹ᡃ䚻䛾⥺ᮦ䛾≉ᚩ䛿䜽䝷䝑䝗㓄ྥ㔠ᒓᇶᯈ䜢⏝䛔䛶䛔䜛䛣䛸䛷䛒䜚䚸䜎䛯ᚑ᮶䝞䝑䝣䜯䞊ᒙ䛸䛧䛶๓グᇶᯈୖ䛻 㻯㼑㻻㻞㻌㻛㻌㼅㻿㼆㻌㻛㻌㼅㻞㻻㻟㻌 䛾 㻟 ᒙ䛾䝉䝷䝭䝑䜽䝇ᒙ䜢ᙧᡂ䛧䛶䛔䛯㼇㻝㼉䚹௒ᅇ䚸ప䝁䝇䝖໬䜢┠ⓗ䛸䛧䛶䚸䝞䝑䝣䜯䞊ᒙ䜢 㼅㻞㻻㻟㻌 ༢ᒙ໬䛧䛯ⷧ⭷㧗 ㉸㟁ᑟ⥺ᮦ䛾㛤Ⓨ䜢⾜䛳䛯䚹䝞䝑䝣䜯䞊ᒙ㼅㻞㻻㻟 䛾⭷ཌ 㻝㻟㻜㻌㼚㼙 䛷ᇶᯈ䛛䜙䛾 㻺㼕 ᣑᩓ䜢ᢚไ䛧䚸ᚑ᮶䛾 㻟ᒙ䝞䝑䝣䜯䞊ᒙ䛾 㻯㼑㻻㻞㻌㻛㻌 㼅㻿㼆㻌 㻛㻌 㼅㻞㻻㻟 ୖ䛸ẚ䜉䛶㐯Ⰽ䛾䛺䛔㻝㻚㻣㻌 㻹㻭㻛㼏㼙㻞 ௨ୖ䛾㉸㟁ᑟ⮫⏺㟁ὶᐦᗘ㻔㻶㻯㻕䜢ᚓ䜙䜜䜛䛣䛸䜢᫂䜙䛛䛻䛧䛯䚹㻌

㐯Ⰽ䛾䛺䛔 㻝㻚㻣㻌㻹㻭㻛㼏㼙㻞 ௨ୖ䛾 㻶㻯 䜢ᚓ䜛䛣䛸䛻ᡂຌ䛧䛯䚹᪤ሗ㼇㻞㼉䛻ᑐ䛧䚸௒ᅇᡃ䚻䛿 㻝㻟㻜㼚㼙 䛸ⷧ䛔 㼅㻞㻻㻟 ༢ᒙ䛷䚸䜘䜚㧗 㻶㻯䛷䛒䜛 㻝㻚㻣㻹㻭㻛㼏㼙㻞 䜢ᚓ䛯䚹㻌ḟ䛻䛣䜜䜙䛾᮲௳䜢ᇶ䛻䚸㻝㻡㼙 㛗䛾ⷧ⭷㧗 ㉸㟁ᑟ⥺ᮦ䛾స〇䜢⾜䛳䛯㻔㻲㼕㼓㻚㻞㻕䚹ᾮయ❅⣲୰㻔㻣㻣㻷㻕⮬ᕫ☢ሙୗ䛷┤ὶᅄ➃Ꮚἲ䛻䜘䜚㏻㟁≉ᛶ䜢ホ౯䛧䛯䚹⤖ᯝ䚸㉸㟁ᑟᒙ⭷ཌ㻞㻚㻣䃛㼙䚸㻠㼙㼙 ᖜ䛾㉸㟁ᑟ⥺ᮦ䜢 ᐃ䛧䚸㻝㻯㻩㻝㻥㻝㻌㻭 䜢ᚓ䛯䚹㻌ᮏᡂᯝ䛻䜘䜚䚸䜽䝷䝑䝗㓄ྥ㔠ᒓᇶᯈ䚸༢ᒙ䝞䝑䝣䜯䞊ᒙ䚸㉸㟁ᑟᒙ䛸⡆␎໬䛥䜜䛯ᵓ㐀䜢ᐇ⌧䛧䛯䚹䜽䝷䝑䝗㓄ྥ㔠ᒓᇶᯈ䛾ప䝁䝇䝖ඃ఩ᛶ䛻ຍ䛘䚸༢ᒙ䝞䝑䝣䜯䞊ᒙ䜢㐺⏝䛩䜛䛣䛸䛷ప䝁䝇䝖㉸㟁ᑟ⥺ᮦ䛾㛤Ⓨ䛜ᮇᚅ䛷䛝䜛䚹㻌㻞䠊⥺ᮦ䛾ᵓ㐀䛸〇ἲ㻌⥺ᮦ䛾ᵓ㐀ཬ䜃〇ἲ䜢 㼀㼍㼎㼘㼑㻚㻝 䛻♧䛩䚹ᇶᯈ䛿䜽䝷䝑䝗ᇶᯈ䛷䛒䜚䚸䛣䜜䛿 㻞 ㍈㓄ྥ䛥䛫䛯 㻯㼡 䛸 㻿㼁㻿 䜢㈞䜚ྜ䛫䚸㓟໬㜵Ṇ䛾䛯䜑 㻺㼕 䜢䜑䛳䛝䛧䛯䜒䛾䛷䛒䜛䚹䝞䝑䝣䜯䞊ᒙ䛿 㼅㻞㻻㻟㻌༢ᒙ䜢๓グᇶᯈୖ䛻 㻾㻲 䝇䝟䝑䝍䝸䞁䜾ἲ䛻䜘䜚ᙧᡂ䛧䛯䚹㉸㟁ᑟᒙ䛿 㻳㼐㻮㼍㻞㻯㼡㻟㻻㼄 䜢 㼜㼡㼘㼟㼑㼐㻌㼘㼍㼟㼑㼞㻌㼐㼑㼜㼛㼟㼕㼠㼕㼛㼚 ἲ䛻䜘䜚ᡂ⭷䛧䛯䚹㉸㟁ᑟᒙᡂ⭷ᚋ䚸㖟ᒙ䜢 㻰㻯 䝇䝟䝑䝍䝸䞁䜾ἲ䛻䜘䜚⵨╔䛧䚸㓟⣲୰⇕ฎ⌮䜢⾜䛳䛯䚹᭱ᚋ䛻㖡Ᏻᐃ໬ᒙ䜢㟁Ẽ䜑䛳䛝ἲ䛻䜘䜚ᙧᡂ䛧䛯䚹㻌㻟䠊᳨ウ᪉㔪䛸⤖ᯝ㻌ᡃ䚻䛿ⷧ⭷㧗 ㉸㟁ᑟ⥺ᮦ䛾ప䝁䝇䝖໬䛾䛯䜑䛻䚸ᵓ㐀䚸స〇ᕤ⛬䛾⡆␎໬䛻╔┠䛧䚸㻟 ᒙ䛾 㻯㼑㻻㻞㻌㻛㻌㼅㻿㼆㻌㻛㻌㼅㻞㻻㻟㻌 䛛䜙䛺䜛䝞䝑䝣䜯䞊ᒙ䛾ᒙᩘపῶ䜢᳨ウ䛧䛯䚹ᚑ᮶䚸ᇶᯈ䛛䜙㉸㟁ᑟᒙ䜈䛾 㻺㼕 ᣑᩓᢚไᒙ䛸䛧䛶 㼅㻿㼆 䜢䚸㻳㼐㻮㻯㻻 䛸䛾᱁Ꮚᩚྜᒙ䛸䛧䛶 㻯㼑㻻㻞 䜢㐺⏝䛧䛶䛔䛯䚹㻟 ᒙ䝞䝑䝣䜯䞊ᒙୖ䛾㉸㟁ᑟᒙ䜈䛾 㻺㼕 ᣑᩓ䜢ホ౯䛧䛯 㻿㻵㻹㻿 ᐃ䜘䜚䚸㼅㻿㼆 䛾䜏䛷䛿䛺䛟 㼅㻞㻻㻟 ෆ䛷 㻺㼕 䛾ᙉᗘ䛜పୗ䛧䛶䛔䛯䛣䛸䛻╔┠䛧䚸㼅㻞㻻㻟 䛾㻺㼕 ᣑᩓᢚไᒙ䛸䛧䛶䛾ᙺ๭䜢ホ౯䛧䛯䚹㉸㟁ᑟᒙ㻌 㻛㻌 ༢ᒙ㼅㻞㻻㻟㻌 㻛㻌 䜽䝷䝑䝗ᇶᯈ䛾 㻿㻵㻹㻿 ᐃ⤖ᯝ䜢 㻲㼕㼓㻚㻌 㻝 䛻♧䛩䚹㼅㻞㻻㻟䝞䝑䝣䜯䞊ᒙෆ䛷 㻺㼕 䛾ᛴᓧ䛺పୗ䛜ぢ䜙䜜䛶䛚䜚䚸㉸㟁ᑟᒙෆ䜈䛾 㻺㼕 ᣑᩓ䛜䛺䛔䛣䛸䛜䜟䛛䛳䛯䚹䛭䛣䛷 㼅㻿㼆 䛾䛺䛔 㻯㼑㻻㻞㻌㻛㻌㼅㻞㻻㻟㻌 䛛䜙䛺䜛 㻞 ᒙ䝞䝑䝣䜯䞊ᒙୖ䛾㉸㟁ᑟ≉ᛶ䜢ホ౯䛧䛯䚹䛭䛾⤖ᯝ䚸ᚑ᮶䛾 㻟 ᒙ䝞䝑䝣䜯䞊ᒙ䛸ྠ➼䛾 㻶㻯 䜢ᚓ䜙䜜䚸䝞䝑䝣䜯䞊ᒙ 㻞 ᒙ໬䜢ᐇ⌧䛧䛯䚹䜎䛯᭦䛻䚸㻳㼐㻮㻯㻻 䛸䛾᱁Ꮚᩚྜᒙ 㻯㼑㻻㻞㻔᱁Ꮚ୙ᩚྜᛶ㻙㻜㻚㻢㻞㻑㻕䛾ᙺ๭䜢䚸᱁Ꮚ୙ᩚྜᛶ䛿㻙㻟㻚㻟㻜㻑䛸ẚ㍑ⓗ኱䛝䛔䛜 㼅㻞㻻㻟 䛷ᢸ䛖ྍ⬟ᛶ䜢᳨ウ䛧䛯䛸䛣䜝䚸༢ᒙ 㼅㻞㻻㻟 䝞䝑䝣䜯䞊ᒙୖ䛷ᚑ᮶䛾 㻟 ᒙ䝞䝑䝣䜯䞊ᒙ䛸ẚ䜉䛶㻲㼕㼓㻚㻝㻌㻿㻵㻹㻿㻌㼍㼚㼍㼘㼥㼟㼕㼟㻌㼛㼒㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼛㼚㻌㼍㻌㼟㼕㼚㼓㼘㼑㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻚㻌㼀㼍㼎㼘㼑㻚㻝 㻿㼠㼞㼡㼏㼠㼡㼞㼑 㼍㼚㼐 㼜㼞㼛㼏㼑㼟㼟 㼛㼒 㼏㼛㼍㼠㼑㼐 㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻸㼍㼥㼑㼞㻌
㻿㼡㼎㼟㼠㼞㼍㼠㼑㻌㻮㼡㼒㼒㼑㼞㻌
㼘㼍㼥㼑㼞㻌
㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼘㼍㼥㼑㼞㻌
㻼㼞㼛㼠㼑㼏㼠㼕㼛㼚㻌㼘㼍㼥㼑㼞㻌
㻿㼠㼍㼎㼕㼘㼕㼦㼍㼠㼕㼛㼚㻌㼘㼍㼥㼑㼞㻌

㻹㼍㼠㼑㼞㼕㼍㼘㼟㻌㻯㼘㼍㼐㻙㼠㼥㼜㼑㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㻌㻼㼞㼛㼏㼑㼟㼟㻌
䠉㻌㼅㻞㻻㻟㻌㻾㻲㻌㼟㼜㼡㼠㼠㼑㼞㼕㼚㼓㻌㻳㼐㻮㼍㻞㻯㼡㻟㻻㼄㻌㻼㼡㼘㼟㼑㼐㻌㼘㼍㼟㼑㼞㻌㼐㼑㼜㼛㼟㼕㼠㼕㼛㼚㻌㻭㼓㻌㻰㻯㻌㼟㼜㼡㼠㼠㼑㼞㼕㼚㼓㻌㻯㼡㻌㻱㼘㼑㼏㼠㼞㼛㼜㼘㼍㼠㼕㼚㼓㻌㻲㼕㼓㻚㻞㻌㻸㼛㼚㼓㼕㼠㼡㼐㼕㼚㼍㼘㻌㻵㻌㻯㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㻝㻡㻌㼙㻌㻳㼐㻮㻯㻻㻌㼒㼕㼘㼙㻌㼛㼚㻌㼍㻌㼟㼕㼚㼓㼘㼑㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻚㻌ཧ⪃ᩥ⊩㻌㻝㻚 ኱ᮌᗣኴ㑻㻌 ௚䠖㻞㻜㻝㻜 ᖺ᫓Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍㻞㻭㻙㼍㻝㻝㻞㻚 㻿㻚㻌㻭㼐㼍㼏㼔㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㻚㻌㻾㼑㼢㻚㻌㻮㻘㻌㼂㼛㼘㻚㻌㻢㻝㻌㼜㻚㻠㻟㻝㻠㻌㻔㻞㻜㻜㻜㻕㻟㻚 㻰㻌㻽㻌㻿㼔㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻌㻿㼏㼕㻚㻌㼀㼑㼏㼔㼚㼛㼘㻚㻘㻌㼂㼛㼘㻚㻌㻝㻤㻌㻌 㻔㻞㻜㻜㻡㻕㼜㻚㻡㻢㻝㻙㻡㻢㻡̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a10Y 系線材ከ⤖ᬗయ䜢⏝䛔䛯 㻾㻱㻮㻯㻻 䝔䞊䝥⥺ᮦ䛾㉸ఏᑟ᥋⥆ᢏ⾡䛾㛤Ⓨ㻌㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㻶㼛㼕㼚㼠㼟㻌㼒㼛㼞㻌㻾㻱㻮㻯㻻㻌㼀㼍㼜㼑㼟㻌㼁㼟㼕㼚㼓㻌㻼㼛㼘㼥㼏㼞㼥㼟㼠㼍㼘㼘㼕㼚㼑㻌㻮㼡㼘㼗㼟㻌

R (:)

R (:)

㻌
ᡂ℩㻌 ᫭ᶞ䠈㛗㇂㻌 ཭ဢ䠈ῐ㊰㻌 ᬛ䠈ᑠ㯮㻌 ⱥಇ䠈Ώ㎶㻌 ࿴㞝䠄ᮾ໭኱䠅䠗㻌 ୰஭㻌 ᫛ᬸ䠄ྂἙ㟁ᕤ䠅㻌㻺㻭㻾㼁㻿㻱㻌㻷㼛㼗㼕䠈㻴㻭㻿㻱㻌㼀㼛㼙㼛㼥㼍䠈㻭㼃㻭㻶㻵㻌㻿㼍㼠㼛㼟㼔㼕䠈㻻㻳㼁㻾㻻㻌㻴㼕㼐㼑㼠㼛㼟㼔㼕䠈㼃㻭㼀㻭㻺㻭㻮㻱㻌㻷㼍㼦㼡㼛㻌㻔㼀㼛㼔㼛㼗㼡㻌㼁㼚㼕㼢㻚㻕㻧㻌㻺㻭㻷㻭㻵㻌㻭㼗㼕㼚㼛㼎㼡㻌㻔㻲㼡㼞㼡㼗㼍㼣㼍㻌㻱㼘㼑㼏㼠㼞㼕㼏㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼚㼍㼞㼡㼟㼑㻬㼕㼙㼞㻚㼠㼛㼔㼛㼗㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
-210
㧗 ㉸ఏᑟ⥺ᮦ䜢⏝䛔䛯䠈ఏᑟ෭༷ 㻹㻾㻵 ⏝䝁䜲䝹䛾㛤Ⓨ
Bulk-bulk joint䛜ᮇᚅ䛥䜜䛶䛔䜛䚹䛭䛾䛯䜑䛻䛿䠈Ọஂ㟁ὶ䝰䞊䝗䜢ྍ⬟䛻䛩䜛䠈㉸ఏᑟ⥺ᮦ䛾㉸ఏᑟ᥋⥆ᢏ⾡䜢㛤Ⓨ䛩䜛ᚲせ䛜䛒䜛䚹
-3
10
10 mA
⌧ᅾ䠈㻾㻱㻮㻯㻻 ⥺ᮦ䛾㉸ఏᑟ᥋⥆䛻ᑐ䛧䛶䠈ᵝ䚻䛺◊✲䛜⾜
100 mA䜟䜜䛶䛔䜛䠷㻝㻘㻞䠹䚹ᡃ䚻䛿䠈⡆౽䛺㉸ఏᑟ᥋⥆ᢏ⾡䛾㛤Ⓨ䜢᳨ウ䛧䛶䛔䜛䚹䛭䛣䛷䠈ᮏ◊✲䛷䛿䠈㻾㻱㻮㻯㻻 ከ⤖ᬗ䝞䝹䜽䜢-410⏝䛔䛶䠈୍ᐃ䛾ᅽຊ䜢༳ຍ䛧䛺䛜䜙⇕ฎ⌮䜢䛩䜛䛣䛸䛻䜘䜚䠈㉸ఏᑟ᥋⥆䛾㛤Ⓨ䜢ヨ䜏䛯䚹㻌㻌-510㻞䠊ᐇ㦂᪉ἲ㻌ᮏ◊✲䛷⏝䛔䜛ከ⤖ᬗ䝞䝹䜽䛿䠈㼀㻱㻼 〇䛾 㼅㻝㻞㻟 ⢊ᮎ䜢䝨䝺䝑䝖≧䛻ᡂᆺ䛧䠈✵Ẽ୰䛷 㻥㻜㻜㽅㻯䠈㻞㻠 ᫬㛫䛾↝⤖䜢⾜䛖䛣-610䛸䛷ᚓ䛯䚹䜎䛯䠈㻿㼡㼜㼑㼞㻼㼛㼣㼑㼞 〇䛷㖡ᒙ䛾↓䛔 㻳㼐㻝㻞㻟 䝔䞊䝥⥺60 65 70 75 80 85 90 95 100ᮦ䜢౑⏝䛧䠈᥋⥆㒊䛻䛿㖟䛾䜶䝑䝏䞁䜾䜢⾜䛳䛯䚹㻌T (K)Ⲵ㔜䛾༳ຍ䛻䛴䛔䛶䛿䠈⁐⼥䝞䝹䜽ྠኈ䛾᥋⥆䛾◊✲㻲㼕㼓㻚㻌㻝㻚㻌㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼞㼑㼟㼕㼟㼠㼍㼚㼏㼑㻌㼕㼚㻌㼠㼔㼑㻌㼎㼡㼘㼗㻙㼎㼡㼘㼗㻌㼇㻟㻘㻠㼉䜢ཧ⪃䛻䛧䛯䚹⇕ฎ⌮୰䛷䜒୍ᐃ䛾Ⲵ㔜䜢䛛䛡䜙䜜䜛⿦㼖㼛㼕㼚㼠㻚㻌㻵㼚㼟㼑㼠㻌㼟㼔㼛㼣㼟㻌㼠㼔㼑㻌㼜㼔㼛㼠㼛㼓㼞㼍㼜㼔㻌㼛㼒㻌㼠㼔㼑㻌㼎㼡㼘㼗㻙㼎㼡㼘㼗㻌㼖㼛㼕㼚㼠㻌㼟㼍㼙㼜㼘㼑㻘㻌⨨䜢స〇䛧䠈᥋⥆䛩䜛ヨᩱ䛻 㻝㻌㻹㻼㼍 䛾ᅽຊ䜢༳ຍ䛧䛺䛜䜙⇕㼣㼔㼕㼏㼔㻌㼕㼟㻌㼑㼝㼡㼕㼜㼜㼑㼐㻌㼣㼕㼠㼔㻌㼏㼡㼞㼞㼑㼚㼠㻌㼘㼑㼍㼐㼟㻌㼍㼚㼐㻌㼢㼛㼘㼠㼍㼓㼑㻌㼠㼍㼜㼟㻚㻌ฎ⌮䜢⾜䛳䛯䚹䜎䛯䠈⇕ฎ⌮䛻䜘䜚Ḟᦆ䛧䛯㓟⣲䜢⿵䛖䛯䜑䠈᥋⥆䛧䛯ヨᩱ䛻䠈㓟⣲䝣䝻䞊୰ 㻠㻣㻜㻌㽅㻯䠈㻝㻞 ᫬㛫䛾㓟⣲䜰䝙䞊-1䝹䜢⾜䛳䛯䚹᥋⥆䛾ホ౯䛿䠈ᅄ➃Ꮚἲ䛻䜘䜛᥋⥆㒊䛾㟁Ẽ᢬10ᢠ ᐃ䜢⏝䛔䛶⾜䛳䛯䚹㻌Tape-bulk joint-2㻌10㻟䠊䝞䝹䜽䠉䝞䝹䜽᥋⥆䛾ᐇ㦂⤖ᯝ㻌
-3䝔䞊䝥⥺ᮦ䛾᥋⥆䜢⾜䛖๓䛻䠈䝞䝹䜽ྠኈ䜢᥋⥆䛥䛫䜛ᐇ
10㦂䜢⾜䛳䛯䚹㻞 䛴䛾䝞䝹䜽䛻Ⲵ㔜䜢༳ຍ䛧䛺䛜䜙䠈✵Ẽ୰ 㻥㻜㻜㻌
-4㽅㻯䠈㻝㻞 ᫬㛫䛾⇕ฎ⌮䜢⾜䛳䛯䚹ᅗ 㻝 䛾ᤄධᅗ䛻䠈䝞䝹䜽䠉䝞10䝹䜽䛾᥋⥆ヨᩱ䛾෗┿䜢♧䛧䠈ᅗ 㻝 䛻㟁Ẽ᢬ᢠ䛾 ᗘ౫Ꮡ
10 mA-5ᛶ䜢♧䛩䚹㟁ὶ್䛜 㻝㻜㻌㼙㻭 䛾ሙྜ䠈᢬ᢠ䛿⣙ 㻥㻝㻌㻷 ௨ୗ䛷ᛴ
100 mA10⃭䛻ⴠ䛱䜛䛜䠈㏵୰䛛䜙⦆䜔䛛䛻ⴠ䛱䛶䛔䜛䚹䜸䞁䝉䝑䝖䜢䝞-6䝹䜽㒊䛾㉸ఏᑟ㌿⛣䛸䛩䜛䛸䠈䛣䛾⦆䜔䛛䛺᢬ᢠ䛾ῶᑡ䛿䠈10ప䛔 㼀㼏 䜢ᣢ䛴᥋⥆㒊䛾㌿⛣䛻䜘䜛䜒䛾䛸⪃䛘䜙䜜䜛䚹䜎䛯䠈-7㻝㻜㻜㻌 㼙㻭 䛾㟁ὶ䛷䛿䠈㻣㻣㻌 㻷 ௜㏆䛷᢬ᢠ䛿䝊䝻䛻䛺䛳䛶䛔䜛䚹10᥋⥆㒊䛾᩿㠃✚䛿䛚䜘䛭 㻞㻌㼙㼙㻞 䛷䛒䜛䛣䛸䛛䜙䠈㻣㻣㻌㻷 䛻䛚䛡䜛
20
40
60
80
100
⮫⏺㟁ὶᐦᗘ䛿䠈㻡㻌㻭㻛㼏㼙㻞 ⛬ᗘ䛻䛺䜛䛸ண᝿䛷䛝䜛䚹㻌T (K)㻌㻲㼕㼓㻚㻌㻞㻚㻌㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼞㼑㼟㼕㼟㼠㼍㼚㼏㼑㻌㼕㼚㻌㼠㼔㼑㻌㼠㼍㼜㼑㻙㼎㼡㼘㼗㻌㻠䠊䝔䞊䝥䠉䝞䝹䜽᥋⥆䛾ᐇ㦂⤖ᯝ㻌㼖㼛㼕㼚㼠㻚㻌㻵㼚㼟㼑㼠㻌㼟㼔㼛㼣㼟㻌㼠㼔㼑㻌㼜㼔㼛㼠㼛㼓㼞㼍㼜㼔㻌㼛㼒㻌㼠㼔㼑㻌㼠㼍㼜㼑㻙㼎㼡㼘㼗㻌㼖㼛㼕㼚㼠㻌㼟㼍㼙㼜㼘㼑㻘㻌✵Ẽ୰䛷᥋⥆䛜ྍ⬟䛺㧗 䛷䛿䠈䝝䝇䝔䝻䜲ᇶᯈ䛾㓟໬㼣㼔㼕㼏㼔㻌㼕㼟㻌㼑㼝㼡㼕㼜㼜㼑㼐㻌㼣㼕㼠㼔㻌㼏㼡㼞㼞㼑㼚㼠㻌㼘㼑㼍㼐㼟㻌㼍㼚㼐㻌㼢㼛㼘㼠㼍㼓㼑㻌㼠㼍㼜㼟㻚㻌䜔 㻾㻱㻮㻯㻻 ᒙ䛾ຎ໬䛾ၥ㢟䛜䛒䛳䛯䛯䜑䠈⇕ฎ⌮᫬㛫䜢▷䛟䛩䜛ᚲせ䛜䛒䛳䛯䚹䛭䛣䛷䠈䝞䝹䜽䛸䝔䞊䝥⥺ᮦ䛻Ⲵ㔜䜢༳ຍㅰ㎡㻌䛧䛺䛜䜙䠈✵Ẽ୰ 㻥㻜㻜㽅㻯䠈㻝 ศ䛾⇕ฎ⌮䜢⾜䛳䛯䚹ᅗ 㻞 䛾ᤄධᮏ◊✲䛿䠈㻭㻹㻱㻰䛂㧗 ㉸㟁ᑟ䝁䜲䝹ᇶ┙ᢏ⾡㛤Ⓨ䝥䝻䝆ᅗ䛻䠈䝔䞊䝥䠉䝞䝹䜽䛾᥋⥆ヨᩱ䛾෗┿䜢♧䛧䠈ᅗ 㻞 䛻㟁Ẽ䜵䜽䝖䛃䜢㏻䛨䛶ᐇ᪋䛥䜜䛯䚹㻌᢬ᢠ䛾 ᗘ౫Ꮡᛶ䜢♧䛩䚹㻝㻜㻌 㼙㻭 䛾㟁ὶ್䛻䛚䛔䛶䠈㻡㻜㻌 㻷㻌௜㏆䛷᢬ᢠ䛿䝊䝻䛻ⴠ䛱䛯䜒䛾䛾䠈㌿⛣䛜ከẁ䛻䛺䛳䛶䛔䜛䚹ཧ⪃ᩥ⊩㻌㻞 ẁ䛾ᛴ⃭䛺᢬ᢠ䛾ῶᑡ䛿䠈䝔䞊䝥䛸䝞䝹䜽䛾㉸ఏᑟ㌿⛣䛻䠍㻚㻌㼅㻚㻌㻶㻚㻌㻼㼍㼞㼗㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻺㻼㻳㻌㻭㼟㼕㼍㻌㻹㼍㼠㼑㼞㻚㻘㻌㼂㼛㼘㻚㻌㻢㻌㻔㻞㻜㻝㻠㻕㻌㼜㻚㼑㻥㻤㻌䜘䜛䜒䛾䛷䠈䛭䛾ᚋ䛾⦆䜔䛛䛺ῶᑡ䛿䠈᥋⥆㒊䛾㉸ఏᑟ㌿⛣㻞㻚㻌 㼄㻚㻌 㻶㼕㼚㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻌 㻿㼏㼕㻚㻌 㼀㼑㼏㼔㼚㼛㼘㻚㻘㻌 㼂㼛㼘㻚㻌 㻞㻤㻌 㻔㻞㻜㻝㻡㻕㻌䛸⪃䛘䜙䜜䜛䚹䛥䜙䛻䠈㻝㻜㻜㻌 㼙㻭 䛾㟁ὶ್䛷䛿䠈㼀㼏 䛜኱䛝䛟ῶᑡ㼜㻚㻜㻣㻡㻜㻝㻜㻌䛧䛶䛔䜛䚹䛣䜜䛿䠈⇕ฎ⌮䛻䜘䜚䝔䞊䝥⥺ᮦ䛜ຎ໬䛧䛯䛯䜑䛸㻟㻚㻌 㻸㻚㻌㻯㼔㼑㼚㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻌㻿㼏㼕㻚㻌㼀㼑㼏㼔㼚㼛㼘㻚㻘㻌㼂㼛㼘㻚㻌㻝㻡㻌㻔㻞㻜㻜㻞㻕㻌⪃䛘䜙䜜䜛䚹ᙜ᪥䛿䠈ప㓟⣲ศᅽ䛾䜰䝹䝂䞁㞺ᅖẼ୰䛻䜘䜚䠈㼜㻚㻢㻣㻞㻌⇕ฎ⌮ ᗘ䜢ୗ䛢䛯⤖ᯝ䜒ሗ࿌䛩䜛䚹㻌㻠㻚㻌㼃㻚㻌㻸㼛㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻵㻱㻱㻱㻌㼀㼞㼍㼚㼟㻚㻌㻭㼜㼜㼘㻚㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻘㻌㼂㼛㼘㻚㻌㻥㻌㻔㻝㻥㻥㻥㻕㻌㻌㼜㻚㻞㻜㻠㻞㻌
㻌㻌̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-a11

Y 系線材ࢫࢡࣛ࢖ࣅࣥࢢ⥺ᮦࡢࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠ࡜☢໬⦆࿴ࡢ┦㛵
Improvement of laser scribing technique for fabrication of multi-filamentary coated conductors⏫㻌 ᩗே䠈๽㻌 ວ䠈࿴Ἠ㻌 ㍤㑻䠄㉸㟁ᑟᕤᏛ◊✲ᡤ䠈⏘ᴗ⏝㉸㟁ᑟ⥺ᮦ࣭ᶵჾᢏ⾡◊✲⤌ྜ䠅䠗ᒾ⇃㻌 ᡂ༟㻔஑ᕞ኱Ꮫ㻕㻌
Takato MACHI, Jin Liu, Teruo Izumi (SRL-ISTEC, iSTERA); Masataka Iwakuma (Kyushu univ.)
E-mail: machi@istec.or.jp㻌㸬ࡣࡌࡵ࡟
REBa2Cu3O7-d (REBCO)⥺ᮦࢆ 05, ࡸ་⒪⏝ຍ㏿ჾࡢ࣐ࢢࢿࢵࢺ➼࡟ᛂ⏝ࡍࡿሙྜ࡟ࡣ㸪᫬㛫ⓗ࡟ኚືࡍࡿ㐽ⶸ㟁ὶࡢᙳ㡪ࢆపῶࡋ࡞ࡅࢀࡤ࡞ࡽ࡞࠸ࠋࡲࡓ㸪ᛴ⃭࡞☢ሙኚ໬ࡸບ☢࣭ῶ☢ࡀྍ⬟࡞ࡼ࠺࡟஺ὶᦆኻࢆపῶࡍࡿࡇ࡜ࡶ㔜せ࡛࠶ࡿࠋప ㉸㟁ᑟ࣐ࢢࢿࢵࢺ࡛ࡼࡃ▱ࡽࢀ࡚࠸ࡿࡼ
࠺࡟㸪㐽ⶸ☢ሙࡢᙳ㡪ࡸ஺ὶᦆኻࢆపῶࡍࡿࡓࡵ࡟ࡣ㸪⥺ᮦࢆ࣐ࣝࢳࣇ࢕࣓ࣛࣥࢺ໬ࡍࡿࡇ࡜ࡀ᭱ࡶຠᯝⓗ࡛࠶ࡿࠋᡃࠎࡣ 5(%&2 ⥺ᮦ࡟࠾࠸࡚࣐ࣝࢳࣇ࢕࣓ࣛࣥࢺᵓ㐀ࢆᐇ⌧ࡍࡿࡓࡵ࡟࣮ࣞࢨ࣮ࢆ⏝࠸ࡓࢫࢡࣛ࢖ࣅࣥࢢຍᕤᢏ⾡ࡢ㛤Ⓨࢆ⾜ࡗ࡚࠸ࡿ>@ࠋ⮫⏺≧ែࣔࢹࣝ࡟࠾࠸࡚㸪㐽ⶸ㟁ὶࡣࣇ࢕࣓ࣛࣥࢺᖜ
࡜ -F ࡟ẚ౛ࡍࡿࡢ࡛㸪㐽ⶸ㟁ὶࡢᙳ㡪ࢆపῶࡍࡿ࡟ࡣࣇ
࢕࣓ࣛࣥࢺ໬ࡍࡿࡇ࡜ࡀ᭷ຠ࡛࠶ࡿ>@ࠋ㐽ⶸ㟁ὶࡣ᫬㛫ⓗ࡟ኚືࡍࡿࡓࡵ㸪࣐ࢢࢿࢵࢺࡢⓎ⏕☢ሙࡢ᫬㛫ኚືࢆ⏕ࡌࡿࠋࡲࡓ㐽ⶸ㟁ὶࡣࣇ࢕࣓ࣛࣥࢺ㛫ࡢ࢝ࢵࣉࣜࣥࢢ࡟ࡼࡗ
࡚ࡶኚືࡍࡿࡀ㸪ࡑࡢ᫬ᐃᩘࡣࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠ࡟཯ẚ౛ࡍࡿࡇ࡜ࡀ▱ࡽࢀ࡚࠸ࡿ>@ࠋ㔠ᒓ⣔㉸㟁ᑟ⥺ᮦ࡛▱ࡽࢀࡿࡇࡢࡼ࠺࡞ᛶ㉁ࡀ 5(%&2 ⥺ᮦ࡛ࡶᡂࡾ❧ࡘ࠿࡝࠺࠿࡟ࡘ࠸࡚▱ぢࢆᚓࡿࡇ࡜࡟ࡼࡗ࡚࣐ࢢࢿࢵࢺ㛤Ⓨ࡟㈨ࡍࡿ
ࡓࡵ㸪࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢᢏ⾡࡟ࡼࡗ࡚ศ๭ຍᕤࡋࡓ
5(%&2 ⥺ᮦ࡟࠾࠸࡚␗࡞ࡿࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࢆ᭷ࡍࡿ
ヨᩱࡢ☢໬⦆࿴ࢆẚ㍑ࡋࡓࡢ࡛ሗ࿌ࡍࡿࠋ
㸬ᐇ㦂᪉ἲ  ࢫࢡࣛ࢖ࣅࣥࢢ⥺ᮦヨᩱ࡜ࡋ࡚ wP ཌࡢ $J Ᏻᐃ໬ᒙࡀᡂ⭷ࡉࢀࡓ *G%&2 ⥺ᮦࢆ⏝࠸ࡓࠋ㛗᪉ᙧ࡟ᩚᙧࡋࡓ࣮ࣞࢨ࣮ࣅ࣮࣒ࢆ↷ᑕࡍࡿࡇ࡜࡟ࡼࡗ࡚ᖜ⣙ wP ࡢ⁁ࢆᙧᡂࡋࡓࠋ⁁࡛༊ษࡽࢀࡓ
ࣇ࢕࣓ࣛࣥࢺᖜࡣ⣙ wP ࡛࠶ࡾ㸪ࡇࢀࡣ PP ⥺ᮦࢆ ศ๭ࡋࡓࡇ࡜࡟┦ᙜࡍࡿࠋ␗࡞ࡿࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࡢヨᩱ࡜ࡋ࡚㸪௨ୗࡢ㸲ࡘࡢヨᩱࢆẚ㍑ࡋࡓࠋ
D↓ศ๭⥺ᮦ
Eᨾព࡟⁁ෆ࡟㉸㟁ᑟᒙࢆṧ␃ࡉࡏࡓศ๭⥺ᮦࠋࣇ࢕࣓ࣛࣥࢺ㛫 ,F ࡣࣇ࢕࣓ࣛࣥࢺෆࡢ⣙ ࠋ
F㉸㟁ᑟᒙࡲ࡛⁁ࢆษ๐ࡋࡓᚋ࡟ $JwP ࢆᡂ⭷ࡋࡓศ๭⥺ᮦ㸦ࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠ⋡㸻㖟ࡢ᢬ᢠ⋡㸧
G㏻ᖖࡢศ๭⥺ᮦ㸦⁁ෆࡢᏳᐃ໬ᒙ࡜㉸㟁ᑟᒙࡀ᏶඲
࡟ྲྀ㝖࠿ࢀࡓ⥺ᮦ㸪ࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࠥᩘ NȐ㸧ࡘࡲࡾ㸪D ࠿ࡽ G ࡢ㡰␒࡛㸪ࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࡀ኱ࡁࡃ
࡞ࡿࡼ࠺࡞ヨᩱࢆ⏝࠸࡚☢໬⦆࿴ ᐃࢆ⾜ࡗࡓࠋ  ☢໬⦆࿴ ᐃ
648,' ☢᮰ィ 4XDQWXP'HVLJQ03065 ࢆ⏝࠸࡚☢໬ࡢ᫬㛫ኚ໬ࢆ ᐃࡋ㸪☢໬⦆࿴ࢆホ౯ࡋࡓࠋ648,' ☢᮰ィࡢヨᩱࢫ࣮࣌ࢫࡣ㝈ࡽࢀ࡚࠸ࡿࡓࡵ㸪ヨᩱࡣࡍ࡭࡚ PPゅ࡟ษฟࡋ࡚࠿ࡽホ౯ࢆ⾜ࡗࡓࠋࡑࡢࡓࡵ㸪PP ゅෆ࡟⣙  ᮏࡢࣇ࢕࣓ࣛࣥࢺࡀ࠶ࡗࡓࠋษࡾฟࡋ࡟ࡣ࢞ࣝࣂࣀࢫ
࢟ࣕࢼࢆ⿦ഛࡋࡓࣇ࢓࢖ࣂ࣮࣮ࣞࢨ࣮ࢆ⏝࠸ࡓࠋ☢໬⦆࿴ࡣ . ࡲ࡛ࢮࣟ☢ሙ෭༷ࡋࡓヨᩱ࡟ 7㸦+F㸪Ọஂ㟁ὶ࣮ࣔࢻ࡟୍࡚ᐃ㸧ࡢእ㒊☢ሙࢆ༳ຍࡋࡓᚋ࡟㸪☢໬ࡢ᫬㛫ኚ໬࠿ࡽồࡵࡓࠋ  ☢໬ࡢつ᱁໬☢໬ࡢ᫬㛫ኚ໬ࡣ>0 ҄ 0 W @>0 ҄ 0 W  @࡜つ᱁໬ࡋ࡚ẚ㍑ࡍ࡭ࡁ࡛࠶ࡿࡀ㸪648,' ☢᮰ィ࡛ࡣ W  ࡢึᮇ☢໬ࡢ್ࢆồࡵࡿࡇ࡜ࡀ࡛ࡁ࡞࠸㸦ࡇࡇ࡛ 0 ҄ ࡣᖖ☢

ᛶ࡜࡞ࡿ⤊≧ែ㸧ࠋࡑࡇ࡛㸪648,' ☢᮰ィ࡛ồࡵࡓ 0+ ᭤⥺ࡀึᮇ☢໬ࡢ ࡟⦆࿴ࡋ࡚࠸ࡿ࡜௬ᐃࡋ࡚㸪☢໬ࣄࢫࢸ ࣜ ࢩ ࢫ Ǽ 0 ࡟ ࡼ ࡗ ࡚ ☢ ໬ ࢆ つ ᱁ ໬ ࡋ ࡓ
㸦>0 ҄ 0 W @>Ǽ0@ࠋ㸧㸬ᐇ㦂⤖ᯝ࠾ࡼࡧ⪃ᐹ
.7 ࡛ࡢ☢໬⦆࿴ࡢ ᐃ⤖ᯝࢆᅗ㸯࡟♧ࡍࠋ㉸㟁ᑟᒙࢆṧ␃ࡉࡏࡓヨᩱ ‫☢ࡢ ۂ‬໬⦆࿴ࡣ↓ศ๭ ‫࡟ ی‬ẚ࡭࡚つ᱁໬☢໬ࡀపୗࡋ࡚࠾ࡾ㸪㉸㟁ᑟᛶࡀపୗࡍࡿࡔࡅ
࡛ࡶ☢໬⦆࿴ࡀᖖ☢ᛶ࡟㏆࡙ࡃ᫬㛫ࢆ▷ࡃࡍࡿࡇ࡜ࡣ࡛
ࡁࡿࡇ࡜ࡀศ࠿ࡿࠋࡋ࠿ࡋ࡞ࡀࡽ㸪%L ⣔⥺ᮦ࡛స〇ࡉࢀࡓ࣐ࢢࢿࢵࢺࡢ౛>@ࢆཧ⪃࡜ࡍࡿ࡜㸪㉸Ᏻᐃ㟁※࡟ࡼࡗ࡚᫬㛫ኚືࢆᢚ࠼ࡿ࡟ࡣ㸪ึᮇ☢໬ࡢ ⛬ᗘࡲ࡛ᢚ࠼ࡿᚲ
せࡀ࠶ࡾ㸪㉸㟁ᑟᒙࡀṧ␃ࡋ࡚࠸ࡿヨᩱ࡛ࡣ༑ศ࡟᫬㛫ኚ໬ࢆపῶ࡛ࡁ࡚࠸ࡿ࡜ࡣゝ࠼࡞࠸ࠋ୍᪉㸪ࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࡀ☜ಖࡉࢀࡓ㏻ᖖࡢศ๭⥺ᮦ ‫ࡣ࡛ ۑ‬㸪VHF ⛬ᗘࡢ᫬㛫࡛☢໬⦆࿴ࡀ࡯ࡰࢮࣟ࡟₞㏆ࡋࡓࠋࡇࡢヨᩱ࡟࠾࠸࡚ࡣ㸪ᅗ㸯࠿ࡽ㐽ⶸ㟁ὶࡢᙳ㡪ࡀẚ㍑ⓗ▷᫬㛫࡛పῶࡋࡓ
ࡇ࡜㸪࠾ࡼࡧู㏵ࣆࢵࢡ࢔ࢵࣉࢥ࢖ࣝἲࡢ ᐃ࠿ࡽ஺ὶᦆ
ኻࡶపῶࡋࡓࡇ࡜ࡀศ࠿ࡿࠋࡇࡇ࡛㸪ศ๭ຍᕤᚋ࡟ $J ᒙࢆᡂ⭷ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࣇ࢕࣓ࣛࣥࢺ㛫᢬ᢠࢆపୗࡉࡏ
ࡓヨᩱ ‫࡚࠸࠾࡟ ڹ‬㸪VHF ⛬ᗘ࡛つ᱁໬☢໬ࡣ⣙ࡲ࡛ῶᑡࡋ࡚࠾ࡾ㸪஺ὶᦆኻࡣ኱ࡁ࠸ࡶࡢࡢ㸪㐽ⶸ㟁ὶࡢ᫬㛫ኚືࡢᙳ㡪ࡣ༑ศపῶ࡛ࡁࡓ࡜⪃࠼ࡽࢀࡿࠋ௒ᚋࡣ㸪☢໬⦆࿴ ᐃ࡛ᚓࡽࢀࡓ▱ぢࢆᐇ㝿࡟ࢥ࢖ࣝࢆస〇ࡋホ౯ࡍࡿࡇ࡜࡟ࡼࡗ᳨࡚ドࡋ࡚࠸ࡃᚲせࡀ࠶ࡿࠋ

Fig.1 The time dependence of magnetic relaxation in different
resistance specimens between filaments.
㸬ㅰ㎡
ᮏ◊✲ࡣࠊ㧗 ㉸㟁ᑟࢥ࢖ࣝᇶ┙ᢏ⾡㛤Ⓨࣉࣟࢪ࢙ࢡ
ࢺࡢ୍⎔࡜ࡋ࡚ࠊ⤒῭⏘ᴗ┬࡞ࡽࡧ࡟᪥ᮏ་⒪◊✲㛤Ⓨᶵᵓࡢጤク࡟ࡼࡾᐇ᪋ࡋࡓࡶࡢ࡛࠶ࡿࠋ
㸬ཧ⪃ᩥ⊩[1] T. Machi, et al., Supercond. Sci. Technol. 26 (2013).
[2] T. Machi, et al.Abstracts of CSSJ Conference,  
[3] Y. Yanagisawa and H. Maeda, Teion Kogaku 48 (2013)165.
[4] M.N. Wilson: “Superconducting Magntes”, Oxford Science
Publishing (1996).
[5] Fukuyama, et al, ࠕJST ඛ➃ィ ศᯒᢏ⾡࣭ᶵჾ㛤Ⓨࣉࣟࢢ࣒ࣛࠖ(H20~24).

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p01

Y 系ピンニング㻸㼀㻳 ἲ䜢⏝䛔䛶 㻵㻮㻭㻰䇵㻹㼓㻻 ᇶᯈୖ䛻స〇䛧䛯 㻮㼍㻴㼒㻻㻟 ῧຍ 㻿㼙㻮㼍㻞㻯㼡㻟㻻y㉸ఏᑟⷧ⭷䛾ప ☢ሙ୰䛻䛚䛡䜛⮫⏺㟁ὶ≉ᛶ䛾ྥୖ㻌㻯㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼕㼚㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㼟㻌㼍㼠㻌㼘㼛㼣㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㼟㻌㼛㼒㻌 㻌㻮㼍㻴㼒㻻㻟㻙㼐㼛㼜㼑㼐㻌㻿㼙㻮㼍㻞㻯㼡㻟㻻㼥㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼠㼍㼜㼑㼟㻌㼐㼑㼜㼛㼟㼕㼠㼑㼐㻌㼛㼚㻌㻵㻮㻭㻰䇵㻹㼓㻻㻌㼎㼡㼒㼒㼑㼞㼑㼐㻌㼙㼑㼠㼍㼘㼘㼕㼏㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㼟㻌㼎㼥㻌㼡㼟㼕㼚㼓㻌㼠㼔㼑㻌㻸㼀㻳㻌㼠㼑㼏㼔㼚㼕㼝㼡㼑㻚㻞䠊ᐇ㦂᪉ἲ㻌
BaHfO3(BHO)ῧຍ SmBa2Cu3Oy(SmBCO)㉸ఏᑟⷧ⭷
ࡣࠊIBAD–MgO ᇶᯈୖ࡟ࣃࣝࢫ࣮ࣞࢨ࣮⵨╔(PLD)ἲ࡟
ࡼࡾᡂ⭷ࡋࡓࠋ10 Hz ࡢ KrF ࢚࢟ࢩ࣐࣮ࣞࢨ࣮(Ȝ=248nm)ࢆ⏝࠸࡚ᡂ⭷୰ࡢ㓟⣲ศᅽࡣ 400 mTorr ࡜ࡋࡓࠋస
〇ᡭἲ࡜ࡋ࡚ప ᡂ⭷(LTG)ᡭἲࢆ⏝࠸ࡓࠋLTG ᡭἲࢆ⏝࠸ࡿࡇ࡜࡛ᚑ᮶ࡢ PLD ἲࡼࡾࡶప࠸ᡂ⭷ ᗘ࡛ c ㍈
㓄ྥ SmBCO ⭷ࡢస〇ࡀྍ⬟࡛࠶ࡿࠋSeed ᒙࡢཌࡉࡣ
30 ~ 40 nmࠊupper ᒙࡢཌࡉࡣ⣙ 250 nm ࡜ࡋࠊᡂ⭷ ᗘ
ࢆ 690Υ ~ 810Υ࡜ᗈ࠸ ᗘ⠊ᅖ࡛ᡂ⭷ࡋࡓࠋBHO ῧຍ㔞ࡣ 1.5 vol.%࡜୍ᐃ࡜ࡋࡓࠋస〇䛧䛯ⷧ⭷䛾㉸ఏᑟ≉ᛶ䛿䚸┤ὶᅄ➃Ꮚἲ䜢⏝䛔䛶 ᐃ䛧䛯䚹㻟䠊ᐇ㦂⤖ᯝཬ䜃⪃ᐹ㻌
Fig. 1 䛻ᵝ䚻䛺ᡂ⭷ ᗘ䛷ᡂ⭷䛧䛯ヨᩱ䛾 20 K 䛻䛚䛡䜛ᕧどⓗ䝢䞁ຊᐦᗘ(Fp)䛾☢ሙ౫Ꮡᛶ䜢♧䛩䚹 ᐃ ᗘ
77 K 䛻䛚䛔䛶䛿䚸 810Υヨᩱ䛾 Fp 䛜඲☢ሙ㡿ᇦ䛻䛚䛔䛶㧗䛛䛳䛯䛜䚸 ᐃ ᗘ 20 K 䛻䛚䛔䛶䛿 750䉝ヨᩱ䛸 810䉝ヨᩱ䛿䚸9 T 䛻䛚䛔䛶 Fp = 530 GN/m3 䛸䜋䜌ྠ⛬ᗘ䛷䛒䛳䛯䚹୍᪉䚸750Υヨᩱ䛿 9 T ௨ୖ䛷䛥䜙䛻ྥୖ䛩䜛ഴྥ䜢♧
䛧䛯䚹Fig. 2(a)䛻ᡂ⭷ ᗘ䛾ప䛔ヨᩱ(750䉝)ཬ䜃 Fig. 2(b)䛻㧗䛔ヨᩱ(810䉝)䛾᩿㠃 TEM ീ䜢♧䛩䚹ᅗ䜘䜚 750䉝ヨᩱ䛜 810䉝ヨᩱ䛻ẚ䜉 BHO 䝘䝜䝻䝑䝗䛜▷䛟ษ䜜䛶ഴ䛔䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹༢⤖ᬗᇶᯈୖ䛾⤖ᯝ䛸ྠᵝ䛻䚸⣽䛟㧗ᐦᗘ䛾䝘䝜䝻䝑䝗䛜ప 䞉ᙉ☢ሙ䛻䛚䛔䛶᭷ຠ䛺䝢䞁䝙䞁䜾䝉䞁䝍䞊䛸䛧䛶ാ䛔䛯䛸⪃䛘䜙䜜䜛[1]䚹
ᙜ᪥䛿 Jc 䛾☢ሙ༳ຍゅᗘ౫Ꮡᛶ䛻䛴䛔䛶䜒㆟ㄽ䛩䜛ண
ᐃ䛷䛒䜛䚹

3

㻝䠊䛿䛨䜑䛻㻌
BaMO3 (BMO: M = Zr, Sn, and Hf)ῧຍ REBa2Cu3Oy(REBCO)㉸ఏᑟⷧ⭷ࡢᾮయ❅⣲ ᗘୗ࡟࠾ࡅࡿ㉸ఏᑟ≉ᛶࡣࡇࢀࡲ࡛࡟ከࡃࡢ◊✲ࡀࡉࢀ࡚ࡁࡓࠋࡋ࠿ࡋ㏆ᖺ࡛ࡣࠊ㧗 ㉸ఏᑟయࡢࢥ࢖ࣝࢆ౑⏝ࡍࡿᶵჾ࡞࡝ࡣ 2 T௨ୖࡢᙉ☢ሙ୰ࠊࡉࡽ࡟ 20 – 50 K ࡢ ᗘ⠊ᅖ࡛ࡢ౑⏝ࡶ⪃࠼ࡽࢀ࡚࠸ࡿࠋࡇࢀࡲ࡛ᡃࠎࡢ◊✲ࢢ࣮ࣝࣉ࡛ࡣࠊప ᡂ⭷(LTG)ᡭἲࢆ⏝࠸࡚పᡂ⭷ᇶᯈ ᗘ࡛స〇ࡋࡓ༢⤖ᬗᇶᯈୖ BHO ῧຍ SmBCO ⭷ࡀୖグ☢ሙ ᗘ㡿ᇦ࡛㉸ఏᑟ≉ᛶࡀྥୖࡍࡿࡇ࡜ࢆሗ࿌ࡋ࡚ࡁࡓࠋࡑࡇ࡛
ᮏ◊✲࡛ࡣࠊLTG ἲࢆ⏝࠸࡚ IBAD–MgO ᇶᯈୖ࡟ᗈ࠸ᡂ⭷ ᗘ⠊ᅖ(690Υ ~ 810oC)࡛ BHO ῧຍ SmBCO ⷧ⭷ࢆస〇ࡍࡿࡇ࡜࡛ࠊ㔠ᒓᇶᯈୖ࡟࠾࠸࡚ࢼࣀࣟࢵࢻࡢᙧ
≧ࢆไᚚࡍࡿࡇ࡜ࢆヨࡳࠊࡲࡓ㉸ఏᑟ≉ᛶ࡬ࡢᙳ㡪ࡶ᳨ウࡋࡓࠋFp[GN/m ]㐨ᮌ ⿱ஓ, ୕ᾆ ᓧ, ୍㔝 ♸ு, ྜྷ⏣ 㝯(ྡྂᒇ኱Ꮫ) ;⾰ᩫ 㢧, ࿴Ἠ ㍤㑻(ISTEC) ;ຍ⸨ ୔ᬕ(JFCC)
Doki Yuya, Miura Shun, Ichino Yusuke, Yoshida Yutaka(Nagoya University)
Ibi Akira, Izumi Teruo(ISTEC) ;Kato Takeharu(JFCC)
E-mail: doki-yuya15@ees.nagoya-u.ac.jp

550
500
450
400
350
300
250
200
150

o

810 C
o
780 C
o
750 C
0

2

4

6

8

10

B[T]

Fig. 1 Pinning force at the measurement temperature of 20
K in 1.5 vol.% BHO doped SmBCO superconducting
thin film.

(a)

(b)

Fig. 2 Cross - sectional TEM image of (a) 750Υ sample
and - (b) 810Υ sample.

㻠䠊ㅰ㎡㻌
ᮏ◊✲ࡣࠊ⛉Ꮫ◊✲㈝⿵ຓ㔠(23226014ࠊ25289358ࠊ
15H04252ࠊ15K14301ࠊ15K1430)ཬࡧᅜ❧◊✲㛤Ⓨἲே᪥ᮏ་⒪◊✲㛤Ⓨᶵᵓ(AMED)ࡢᮍ᮶་⒪ࢆᐇ⌧ࡍࡿ
་⒪ᶵჾ࣭ࢩࢫࢸ࣒◊✲㛤Ⓨ஦ᴗࡢᨭ᥼࡟ࡼࡾ⾜ࢃࢀࡓࠋཧ⪃ᩥ⊩㻌[1] S. Miura et al.: Supercond. Sci. Technol. Vol. 28(2015)
p. 65013

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p02

Y 系ピンニング␗䛺䜛✚ᒙᩘ䜢᭷䛩䜛 IBAD-MgO 㔠ᒓᇶᯈୖ BaHfO3 ῧຍ SmBa2Cu3Oy✚ᒙ⭷䛾⦪☢ሙຠᯝThe longitudinal magnetic field effect for BaHfO3-doped- SmBa2Cu3Oy multilayered films
with various layer numbers deposited on IBAD-MgO buffered metal substratesᓥᓮ㻌 ┤ே㸪ᮡཎ࿴ᶞ㸪୍㔝♸ு㸪ྜྷ⏣㝯䠄ྡ኱䠅㻌SHIMAZAKI Naoto, SUGIHARA Kazuki, ICHINO Yusuke, YOSHIDA Yutaka (Nagoya Univ.)
E-mail: shimazaki-naoto15@ees.nagoya-u.ac.jp
BHO nanorod
48 layers㻌
BHO-doped SmBCO
Pure SmBCO

Substrate
Fig. 1 Architecture in BHO-doped SmBCO multilayered
film.

2

[A/cm ]

1.0
0.8
0.6

㻞䠊ᐇ㦂᪉ἲ㻌
KrF ࢚࢟ࢩ࣐࣮ࣞࢨ࣮ࢆ⏝࠸ࡓࣃࣝࢫ࣮ࣞࢨ࣮⵨╔(PLD)ἲ࡟ࡼࡾ IBAD-MgO 㔠ᒓᇶᯈ(ǻĳ=1.8°)ୖ࡟ SmBCOⷧ⭷ࢆస〇ࡋࡓࠋᇶᯈ ᗘ 880ºC㸪ࢱ࣮ࢤࢵࢺ-ᇶᯈ㛫㊥㞳 60 mm㸪㓟⣲ศᅽ 53 Pa ࡛ᡂ⭷ࢆ⾜ࡗࡓࠋ࣮ࣞࢨ࣮ࡢ⧞
ࡾ㏉ࡋ࿘Ἴᩘࡣ 10 Hz ࡜ࡋࡓࠋBHO ࡣಟ㣭ࢱ࣮ࢤࢵࢺἲ
࡟ࡼࡾ SmBCO ࡟ῧຍࡋࡓࠋFig. 1 ࡟♧ࡍࡼ࠺࡟ BHO ࢆῧຍࡋ࡚࠸࡞࠸ SmBCO ᒙ࡜ BHO ῧຍᒙࢆࡑࢀࡒࢀ 24ᒙࡎࡘ㸪ィ 48 ᒙࢆ✚ᒙࡋࡓࠋBHO ῧຍᒙ࡟࠾ࡅࡿ BHO
ᙧ≧ࡣࢼࣀࣟࢵࢻ≧࡛࠶ࡿࠋBHO ῧຍᒙ࡛ࡣ BHO ࢆ 4.4
vol.% ῧຍࡋࡓࠋస〇ࡋࡓⷧ⭷ࡢ☢ሙ୰㉸ఏᑟ≉ᛶࡢホ౯ࡣ PPMS (Physical Properties Measurement System)㸪BHO ῧຍ㔞ࡣ EDX(Energy Dispersive X-ray Spectroscopy)㸪⤖ᬗᵓ
㐀ࡣ X ⥺ᅇᢡ(XRD)ࢆ⏝࠸࡚ホ౯ࡋࡓࠋ㻟䠊ᐇ㦂⤖ᯝ㻌
XRD ᐃࡼࡾ㸪స〇ࡋࡓ SmBCO ✚ᒙ⭷ࡣⰋዲ࡞ c 㓄ྥ࡛࠶ࡾ㸪㠃ෆ㓄ྥᗘࡣ 2.2°⛬ᗘ࡛࠶ࡿࡇ࡜ࢆ☜ㄆࡋࡓࠋࡲࡓ㸪EDX ศᯒࡼࡾⷧ⭷඲యࡢ⤌ᡂẚࡀᆒ୍࡛࠶ࡿࡇ࡜
ࢆ☜ㄆࡋࡓࠋస〇ࡋࡓⷧ⭷ࡢ㉸ఏᑟ≉ᛶࢆホ౯ࡋࡓ⤖ᯝ㸪BHO ↓ῧຍ SmBCO ༢ᒙⷧ⭷࠾ࡼࡧ BHO ࢼࣀࣟࢵࢻῧຍ SmBCO✚ᒙ⭷ࡢ Jcself ࡣࡑࢀࡒࢀ㸪2.93 MA/cm2 㸪2.62 MA/cm2 ࡛࠶ࡗࡓࠋࡲࡓ㸪⮫⏺ ᗘࡣࡑࢀࡒࢀ㸪92.6 K㸪92.1 K ࡛࠶ࡗࡓࠋFig. 2 ࡟㸪ྛⷧ⭷ࡢ 77 K㸪B//I ࡟࠾ࡅࡿ Jcself ࡛つ᱁໬ࡋࡓ Jc ࡢ☢ሙ౫Ꮡᛶࢆ♧ࡍࠋBHO ࢼࣀࣟࢵࢻῧຍ
SmBCO ✚ᒙ⭷࡟࠾࠸࡚㸪0.3 T ௜㏆࡛ Jc ࡀ Jcself ࡼࡾ 3㸣ྥୖࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ୍᪉㸪BHO ↓ῧຍ SmBCO༢ᒙⷧ⭷࡛ࡣࡇࡢࡼ࠺࡞ Jc ࡢྥୖࡣ☜ㄆࡉࢀ࡞࠿ࡗࡓࠋ
ࡇࢀࡽࡢᐇ㦂⤖ᯝࡼࡾ㸪IBAD-MgO 㔠ᒓᇶᯈୖ࡛ࡶ⦪
☢ሙຠᯝ࡟ࡼࡿ Jc ࡢୖ᪼ࢆ☜ㄆࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋࡇࢀ

Jc/Jc

self

㻝䠊䛿䛨䜑䛻㻌
⦪☢ሙຠᯝࡣ㟁ὶ࡜༳ຍ☢ሙࡀᖹ⾜࡞≧ែ(ࣇ࢛࣮ࢫ࣭ࣇ࣮ࣜ≧ែ)࡟࠾࠸࡚ほ ࡉࢀࡿ㟁☢⌧㇟ࡢࡇ࡜࡛࠶
ࡿࠋ⦪☢ሙຠᯝࡢ 1 ࡘ࡜ࡋ࡚☢ሙ୰⮫⏺㟁ὶᐦᗘ(Jc)ࡀ⮬ᕫ☢ሙୗ࡟࠾ࡅ Jc (Jcself)࡜ẚ㍑ࡋ࡚ྥୖࡍࡿ⌧㇟ࡀ࠶ࡾ㸪ࡑࡢ⌧㇟ࢆ฼⏝ࡋࡓ㉸ఏᑟࢣ࣮ࣈࣝ࡞࡝ࡶᥦ᱌ࡉࢀ࡚࠸
ࡿ[1]ࠋJc ࡀྥୖࡍࡿࡇ࡜࡟ࡼࡾ㸪ᶵჾࡢᑠᆺ໬࡟ࡶࡘ࠿
࡞ࡀࡿࠋࡋ࠿ࡋ㸪㧗 ㉸ఏᑟయ࡟࠾ࡅࡿ⦪☢ሙຠᯝࡢሗ
࿌ࡣᑡ࡞ࡃ㸪⦪☢ሙຠᯝࡢ㉳※ࡣ᫂ࡽ࠿࡟࡞ࡗ࡚࠸࡞࠸ࠋ
ࡇࢀࡲ࡛㸪ᡃࠎࡣ LaAlO3 ༢⤖ᬗᇶᯈୖ࡟స〇ࡋࡓேᕤࣆࣥ ࢽ ࣥ ࢢ ࢭ ࣥ ࢱ ࣮ ࡜ ࡋ ࡚ BaHfO3 (BHO) ࢆ ᑟ ධ ࡋ ࡓ
SmBa2Cu3Oy(SmBCO)✚ᒙ⭷࡟࠾࠸࡚⦪☢ሙຠᯝ࡟ࡼࡿ☢
ሙ୰ Jc ࡢྥୖࢆ☜ㄆࡋࡓ[2]ࠋࡇࡢ⦪☢ሙຠᯝࢆᶵჾᛂ⏝ࡍࡿࡓࡵࡣ㸪㔠ᒓᇶᯈୖ SmBCO ✚ᒙ⭷࡟࠾ࡅࡿ㸪⦪☢ሙຠᯝࡢⓎ⌧ࡀᚲせ୙ྍḞ࡛࠶ࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣ
IBAD-MgO 㔠ᒓᇶᯈୖ࡟↓ῧຍ SmBCO ᒙ࡜ BHO ῧຍ
SmBCO ᒙ࠿ࡽᡂࡿ✚ᒙ⭷ࢆస〇ࡋ㸪⦪☢ሙୗ࡟࠾࠸࡚⮫⏺㟁ὶ≉ᛶࢆホ౯ࡋࡓࠋ@77 K, B//I

0.4

48 ML
pure

0.2
-1 0

1

2

3

4

5

6

7

8

9 10

Magnetic field, B [T]
Fig. 2 Magnetic field dependence of Jc/Jcself at 77 K under
B//I in the pure SmBCO single layer (pure) andBHO-doped SmBCO multilayered (48 ML) films.

ࡲ࡛㸪༢⤖ᬗᇶᯈୖ SmBCO ✚ᒙ⭷ࡢ⦪☢ሙຠᯝ࡟㛵ࡍࡿᐇ㦂࡛ࡣ㸪0.3 T ௜㏆࡛ 10 %௨ୖ Jc ࡀྥୖࡍࡿࡇ࡜ࡀࢃ
࠿ࡗ࡚࠸ࡿࠋ௒ᚋ㸪ࡉࡽ࡞ࡿ᮲௳ࡢ᭱㐺໬ࢆ⾜࠺ࡇ࡜࡛㸪
IBAD-MgO ᇶᯈୖ࡟࠾࠸࡚ࡶ኱ᖜ࡞ Jc ࡢྥୖࢆᐇ⌧࡛ࡁࡿྍ⬟ᛶࡀ࠶ࡿࠋᙜ᪥ࡣ㸪ྛᒙࡢ⭷ཌ㸪✚ᒙᩘࢆኚ໬ࡉ
ࡏࡓᐇ㦂࡟㛵ࡋ࡚ሗ࿌ࢆ⾜࠺ணᐃ࡛࠶ࡿࠋ㻠䠊ㅰ㎡㻌ᮏ ◊ ✲ ࡢ ୍ 㒊 ࡣ 㸪 ⛉ Ꮫ ◊ ✲ ㈝ ⿵ ຓ 㔠 (23226014,
25289358, 15H04252, 15K14301㸪15K14302)ࡢຓᡂࡲࡓࡣ
ᅜ❧◊✲㛤Ⓨἲே᪥ᮏ་⒪◊✲㛤Ⓨᶵᵓ㸦AMED㸧ࡢᮍ᮶་⒪ࢆᐇ⌧ࡍࡿ་⒪ᶵჾ࣭ࢩࢫࢸ࣒◊✲㛤Ⓨ஦ᴗࡢᨭ᥼࡟ࡼࡗ࡚⾜ࢃࢀࡓࠋ
㻡䠊ཧ⪃ᩥ⊩㻌[1] T. Matsushita et al.㸸 Supercond. Sci. Technol. 25 (2012)
125009.
[2] K. Sugihara et al. 䠖 Supercond. Sci. Technol. 28 (2015)
104004.

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p03

Y 系ピンニング㻮㼍㻴㼒㻻㻟 ேᕤ䝢䞁ᑟධ 㻱㼡㻮㻯㻻 ⥺ᮦ䛾ప㧗☢ሙ≉ᛶ䛾ホ౯㻌㻱㼢㼍㼘㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㼘㼛㼣㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼍㼚㼐㻌㼔㼕㼓㼔㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌 㻌㼕㼚㻌㻱㼡㻮㻯㻻㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼐㼛㼜㼑㼐㻌㼣㼕㼠㼔㻌㼍㼞㼠㼕㼒㼕㼏㼕㼍㼘㻌㼜㼕㼚㼚㼕㼚㼓㻌㼏㼑㼚㼠㼑㼞㕥ᮌ㻌 ໶䠈ᑠ㔝ᑎ㻌 ඃኴ䠈஭ୖ㻌 ᫀ╬䠈ᮾᕝ㻌 ⏥ᖹ䠈ᮌ㡲㻌 㝯ᬸ䠄஑኱䠅䠗㻌⾰ᩫ㻌 㢧䠈ྜྷ⏣㻌 ᭸䠈⏫ᩗே䠈࿴Ἠ㻌 ㍤㑻㻌 㻔㻵㻿㼀㻱㻯㻕㻌㻿㼁㼆㼁㻷㻵㻌㼀㼍㼗㼡㼙㼕䠈㻻㻺㻻㻰㻱㻾㻭㻌㼅㼡㼠㼍㻌㻵㻺㻻㼁㻱㻌㻹㼍㼟㼍㼥㼛㼟㼔㼕㻘㻌㻴㻵㻳㻭㻿㻴㻵㻷㻭㼃㻭㻌㻷㼛㼔㼑㼕㻘㻌㻷㻵㻿㻿㻌㼀㼍㼗㼍㼚㼛㼎㼡㻔㻷㼥㼡㼟㼔㼡㻌㼁㼚㼕㼢㻚㻕㻧㻌 㻌㻵㻮㻵㻌㻭㼗㼕㼞㼍㻘㻌㼅㻻㻿㻴㻵㻰㻭㻌㼀㼛㼙㼛㻘㻌㻹㻭㻯㻴㻵㻌㼀㼍㼗㼍㼠㼛㻘㻌㻵㼆㼁㻹㻵㻌㼀㼑㼞㼡㼛㻌㻔㻵㻿㼀㻱㻯㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼟㼡㼦㼡㼗㼕㻬㼑㼑㼟㻚㼗㼥㼡㼟㼔㼡㻙㼡㻚㼍㼏㻚㼖㼜㻌㻞㻚㻌 ᐇ㦂᪉ἲ㻌㻌 ヨᩱ⥺ᮦ䛿 㻵㻮㻭㻰 ᇶᯈୖ䛻 㻼㻸㻰㻔㻼㼡㼘㼟㼑㻌㻸㼍㼟㼑㼞㻌㻰㼑㼜㼛㼟㼕㼠㼕㼛㼚㻕ἲ䛻䜘䜚〇⭷䛧䛯 㻱㼡㻮㻯㻻 ⥺ᮦ䜢⏝䛔䛯䚹ேᕤ䝢䞁䛿 㻮㻴㻻 䜢ᑟධ䛧䛶䛔䜛䚹㉸ఏᑟᒙ䛾⭷ཌ䛿 㻟㻚㻟㻌ȝ㼙 䛷䛒䜛䚹ྠ⥺ᮦ䛾୍㒊䜢䝺䞊䝄䞊ຍᕤ䛻䜘䜚ษ䜚ฟ䛧䚸ヨᩱ䝃䜲䝈䛿 㻞㽢㻞㻌 㼙㼙 䛸䛧䛯䚹ᘬ䛝ᢤ䛝ἲ䜢⏝䛔䛶䚸☢໬䝠䝇䝔䝸䝅䝇≉ᛶ䚸ཬ䜃䚸☢໬⦆࿴ᐃ䜢⾜䛳䛯䚹㻌㻟㻚㻌 ᐇ㦂⤖ᯝ䛸⪃ᐹ㻌㻌 㻲㼕㼓㻚㻝 䛻 㻢㻡㻌㻷 ཬ䜃䚸㻟㻡㻌㻷 䛾ྛ☢ሙ䛷䛾☢໬䝠䝇䝔䝸䝅䝇᭤⥺䜢♧䛩䚹䛣䛾☢໬䝠䝇䝔䝸䝇䛾್䜢⏝䛔䛶䚸 㻶㼏 ≉ᛶ䜢௨ୗ䛾⾲ᘧ䛛䜙ᑟฟ䛧䛯䚹㻌

65 K
35 K
B // cm (emu)

0.25

0.00

-0.25

-0.50

0

2

4

6

8

10

B (T)
Fig.1

Magnetic field dependence of magnetization
at 65 K and 35 K

3500
65 K
35 K
B // c

3000

(1)

2500
2000
1500
1000

ㅰ㎡㻌
ᮏ◊✲䛾୍㒊䛿䚸㧗 ㉸㟁ᑟ䝁䜲䝹ᇶ┙ᢏ⾡㛤Ⓨ䝥䝻䝆䜵䜽䝖䛾୍⎔䛸䛧䛶䚸⤒῭⏘ᴗ┬䛾ጤク䛻䜘䜚ᐇ᪋䛩䜛䛸䜒䛻䚸᪥ᮏᏛ⾡᣺⯆఍䛾⛉◊㈝䠄㻞㻠㻣㻢㻜㻞㻟㻡䠅䛾ຓᡂ䜢ᚓ䛶⾜䛳䛯䜒䛾䛷䛒䜛䚹㻌̿̿

500
0

0

2

4

6

8

10

B (T)
Jc-B characteristics at 10-8V/m in B//c

Fig.2

10-3

0.08

-4

10

10-5

m (emu)䛣䛣䛷䚸㼘 䛿㛗䛥䚸㼣 䛿ᖜ䚸䂴㻹 䛿☢໬䝠䝇䝔䝸䝅䝇䛾ᖜ䛷䛒䜛䚹㻲㼕㼓㻚㻞 䛻㻔㻝㻕ᘧ䜘䜚ぢ✚䜒䛳䛯 㻵㼏㻙㻮 ≉ᛶ䜢♧䛩䚹⮫⏺㟁ὶ್䛿ᖜ 㻝㻌㼏㼙 䛸䛧䛶ぢ✚䜒䜚䚸㻟㻡㻌㻷㻌㻥㻚㻡㻌㼀 䛻䛚䛔䛶䚸㻡㻞㻠㻌㻭 䛸䛺䛳䛯䚹䜎䛯䚸⮬ᕫ☢ሙ䛷䛿 㻞㻤㻜㻜㻌㻭 ௨ୖ䛾㠀ᖖ䛻㧗䛔⮫⏺㟁ὶ್䜢ᣢ䛴䚹䛧䛛䛧䚸㻲㼕㼓㻚㻟 䛻♧䛩䜘䛖䛺䚸☢໬⦆࿴ ᐃ䛛䜙ぢ✚䜒䜙䜜䜛㟁⏺䛿䚸௨ୗ䛾⾲ᘧ䜢⏝䛔䛶ᑟฟ䛩䜛䛸䚸㻌ȝ Gwl dM(2)
E= 02(l +w) dt
㻝㻜㻙㻤㻌 㼂㻛㼙 ⛬ᗘ䛾㟁⏺䛷䛾 㻵㼏 䜢ぢ✚䜒䜛䛣䛸䛸䛺䜛䚹䛧䛛䛧䚸㏻
ᖖ䚸㟁⏺ᇶ‽䛿 㻝㻜㻙㻠㻌 㼂㻛㼙 䛷䛒䜛䚹䛭䛣䛷䚸☢໬⦆࿴≉ᛶ䛛䜙ᚓ䜙䜜䛯 㻱㻌 㻙㻵 ≉ᛶ䛛䜙 㼚 ್䜢ぢ✚䜒䜛䛸䚸㻞㻜 䛸䛺䛳䛯䚹㼚 ್䝰䝕䝹䜢௬ᐃ䛧 㻝㻜㻙㻠㻌 㼂㻛㼙 䛻䛚䛡䜛⮫⏺㟁ὶ್䜢ぢ✚䜒䜛䛸䚸㻟㻡㻌㻷䚸㻝㻜㻌㼀 䛻䛚䛔䛶 㻤㻥㻜㻌㻭 䛸䛺䛳䛯䚹䛣䛾䜘䛖䛻䚸㟁⏺ᇶ‽䜢⿵ṇ䛩 䜛 䛣 䛸 䛻 䜘 䜚 䚸 ே ᕤ 䝢 䞁 䛸 䛧 䛶 㻮㻴㻻 䜢 ᑟ ධ 䛧 䛯 ཌ ⭷ 䛾㻱㼡㻮㻯㻻 ⥺ᮦ䛿ప 䛾㧗☢ሙ䛻䛚䛔䛶䜒㠀ᖖ䛻㧗䛔⮫⏺㟁ὶ䜢ᣢ䛴㧗ᛶ⬟⥺ᮦ䛸䛺䜛䛣䛸䛜ศ䛛䛳䛯䚹 ᐃἲ䛸ゎᯒ䛾ヲ⣽䛿ᙜ᪥ሗ࿌䛩䜛䚹㻌

E (V/m)6l
Jc =ǻMw(3l íw)0.50

Ic (A/cm-w)

㻝䠊䛿䛨䜑䛻㻌
ᕼᅵ㢮⣔㧗 ㉸ఏᑟ⥺ᮦ㻔㻾㻱㻮㻯㻻㻦㻌 㻾㻱 䛿ᕼᅵ㢮ඖ⣲㻕䝁䞊䝖⥺ᮦ䛿☢ሙ୰䛷䜒㧗䛔⮫⏺㟁ὶᐦᗘ㻔㻶㼏㻕䜢ᣢ䛴䚹䛧䛛䛧䚸㼏 ㍈᪉ྥ䛻☢ሙ䜢༳ຍ䛧䛯ሙྜ䛾 㻶㼏 䛜ప䛟䚸␗᪉ᛶ䛜኱䛝䛔䛣䛸䛛䜙䚸㼏 ㍈┦㛵䝢䞁䛸䛧䛶䛾ேᕤ䝢䞁䛾ᑟධ䛜ᩘከ䛟⾜䜟䜜䛶䛔䜛䚹≉䛻䚸㻮㼍㻴㼒㻻㻟㻔㻮㻴㻻㻕䜢ᑟධ䛧䛯 㻱㼡㻮㻯㻻 ⥺ᮦ䛿ཌ⭷໬䛧䛯ሙྜ䛻䜒ඃ䜜䛯 㻶㼏 ≉ᛶ䜢ᣢ䛴䛣䛸䛛䜙䚸㧗䛔⮫⏺㟁ὶ䜢ᣢ䛴⥺ᮦ䛾ᐇ⌧䛜ᮇᚅ䛥䜜䛶䛔䜛䚹㻌ᮏ◊✲䛷䛿䚸ཌ⭷䛾 㻮㻴㻻 䜢ᑟධ䛧䛯䚸㻱㼡㻮㻯㻻 ⥺ᮦ䛾⮫⏺
㟁ὶ≉ᛶ䛻䛴䛔䛶䚸㏻ᖖ䛾㏻㟁ἲ䛻䜘䜛 ᐃ䛜ᅔ㞴䛺䚸ప䚸ཬ䜃䚸㧗☢ሙ㡿ᇦ䛻䛴䛔䛶䚸ᘬ䛝ᢤ䛝ἲ䛻䜘䜛☢໬ ᐃ⿦⨨䜢⏝䛔䛶ホ౯䜢⾜䛳䛯䚹䛭䛾ప 㧗☢ሙ㡿ᇦ䛾⮫⏺㟁ὶ≉ᛶ䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌

10-6
10-7
10-8
10-9
10-10 2
10

0.07

0.07

0.06 2
10

103
t (s)

104

B // cT = 35 K
B = 10 T
I (A/cm-w)

103

Fig.3 E-I characteristics at 35 K in B//c
(inset) magnetization relaxation at 35K
第92回

2015年度秋季低温工学・超電導学会

3C-p04

Y 系ピンニング㼅㻮㻯㻻 ⷧ⭷䛻䛚䛡䜛䝝䜲䝤䝸䝑䝗☢᮰䝢䞁䝙䞁䜾䛻ᑐ䛩䜛䝘䝜⢏Ꮚ䛾㻌⢏ᚄ䞉✵㛫ศᕸ䛾ᙳ㡪㻌㻵㼚㼒㼘㼡㼑㼚㼏㼑㻌㼛㼒㻌㼟㼕㼦㼑㻌㼍㼚㼐㻌㼟㼜㼍㼠㼕㼍㼘㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼚㼍㼚㼛㼜㼍㼞㼠㼕㼏㼘㼑㼟㻌㻌 㼛㼚㻌㼔㼥㼎㼞㼕㼐㻌㼒㼘㼡㼤㻌㼜㼕㼚㼚㼕㼚㼓㻌㼕㼚㻌㼅㻮㻯㻻㻌㼠㼔㼕㼚㻌㼒㼕㼘㼙㼟㻌㻌ᾆཱྀ㻌 㞝ୡ㻘㻌 ୖ℧㻌 ဴஓ㻘㻌 ᮎỌ㻌 ᱈ኴ㑻㻘㻌 ∾ཎ㻌 㝯༤㻘㻌 ᮎྜྷ㻌 ဴ㑻㻘㻌 ⸨ྜྷ㻌 Ꮥ๎㻌 㻔⇃ᮏ኱Ꮫ㻕㻌
URAGUCHI Yusei, KOTAKI Tetsuya, SUENAGA Momotaro, MAKIHARA Takahiro, SUEYOSHI Tetsuro,
FUJIYOSHI Takanori (Kumamoto Univ.)
E-mail: uraguchi@st.cs.kumamoto-u.ac.jp㻞䠊ᐇ㦂᪉ἲ㻌
BSO/YBCO ᨃఝከᒙ⭷䛿䠈PLD ἲ䜢⏝䛔䛶 SrTiO3(100)ᇶᯈୖ䛻స〇䛧䛯䠊KrF 䜶䜻䝅䝬䝺䞊䝄䞊䛾⧞䜚㏉䛧࿘Ἴᩘ䛿 5 Hz䠈ᇶᯈ ᗘ䛿 750 °C 䜎䛯䛿 770 °C 䛸䛧䛶䠈300 mTorr䛾㓟⣲㞺ᅖẼ୰䛷ᡂ⭷䜢⾜䛳䛯䠊YBCO ᒙ䜢ሁ✚䛥䛫䛯ᚋ䛻䠈
BSO 䜢ᩘ䝟䝹䝇ሁ✚䛥䛫䠈䛣䛾ᕤ⛬䜢⧞䜚㏉䛩䛣䛸䛷 BSO 䜢 3ḟඖ䝢䞁䛸䛧䛶 YBCO ෆ䛻ᑟධ䛧䛯䠊1 ḟඖ䝢䞁䛿䠈200 MeV
䛾 Xe 䜲䜸䞁䜢⏝䛔䛶䠈YBCO ⷧ⭷䛾 c ㍈᪉ྥ䛻ᑐ䛧䛶ᖹ⾜䛻↷ᑕ䛩䜛䛣䛸䛻䜘䜚ᑟධ䛧䛯䠊1 ᒙ䛒䛯䜚䛾 BSO 䝟䝹䝇ᩘ m䠈
YBCO 䛾ᒙᩘ n䠈ᇶᯈ ᗘ Ts 䛾ヨᩱ䜢 BSO(m䠈n)Ts 䛸⾲グ䛩䜛䠊Table1 䛻䠈௒ᅇస〇䛧䛯ヨᩱ䛻䛴䛔䛶♧䛩䠊㉸ఏᑟ≉ᛶ䛿┤ὶᅄ➃Ꮚἲ䛻䜘䜚 ᐃ䛧䠈Jc 䛿㟁⏺ᇶ‽Ec = 1PV/cm 䛷ᐃ⩏䛧䛯䠊䜎䛯䠈Jc 䛾☢ሙゅᗘ౫Ꮡᛶ䛷䛿䠈༳ຍ䛩䜛☢ሙ᪉ྥ䛜㟁ὶ༳ຍ᪉ྥ䛻ᑐ䛧䛶ᖖ䛻ᆶ┤䛻䛺䜛䜘䛖䛻䛧䠈☢ሙ䛸ⷧ⭷䛾 c ㍈䛾䛺䛩ゅᗘ䜢T䛸䛧䛶 ᐃ䜢⾜䛳䛯䠊

Table 1 Specification of samples
BSO
number of
number of
Ts[°C]
layerspulsesSample

-

-

750

88.2

pure770

-

-

770

89.7

BSO(1,100)750

1

100

750

85.8

BSO(1,100)770

1

100

770

87.7

BSO(10,10)770

10

10

770

86.5

(a)

5
T = 65KB
4 = 1T3

pure750
pure770
BSO(1,100)750
BSO(1,100)770
BSO(10,10)770

2
1
-30

0

30

60

90

120

T [deg.](b)2
T = 65K
B = 5T
Jc [MA/cm2]

1.5

㻟䠊⤖ᯝ䛚䜘䜃⪃ᐹ㻌Fig䠊1(a)䠈(b)䛻 T = 65 K 䛷䠈䛭䜜䛮䜜(a) 1 T䠈(b) 5 T 䛻䛚䛡䜛 Jc 䛾☢ሙゅᗘ౫Ꮡᛶ䜢♧䛩䠊B = 1 T 䛷䛿 c ㍈᪉ྥ௜㏆
䛾 Jc 䛻ᑐ䛧䛶䠈⢏ᚄ䠈䛚䜘䜃✵㛫ศᕸ䛾㐪䛔䛻䜘䜛ᙳ㡪䛿䜋䛸䜣䛹䛺䛔䛜䠈B = 5 T 䛷䛿 BSO(1,100)770 䛷 c ㍈᪉ྥ䜢୰ᚰ䛻䠈ᗈ䛔ゅᗘ⠊ᅖ䛷㧗䛔 Jc 䜢♧䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䠊䛣䜜䛿䠈ヨᩱ䛻ᆒ୍䛻ศᕸ䛧䛯䝘䝜⢏Ꮚ䛾⢏ᚄ䛜኱䛝䛔䜋䛹䠈ᰕ≧Ḟ㝗䛻ᤕᤊ䛥䜜䛶䛔䛺䛔☢᮰⥺䛻ᑐ䛧䛶䠈᭷ຠ䛻䝢䞁Ṇ䜑䛩䜛䛯䜑䛸⪃䛘䜙䜜䜛䠊䜎䛯䠈ab 㠃᪉ྥ䛻䛚䛔䛶䛿䠈ᒙᩘ䛜 100 ᒙ䛾ヨᩱ䛷䛿ᡂ⭷ᗘ䛻㛵ಀ䛺䛟䝘䝜⢏Ꮚ䛾ᑟධຠᯝ䛜䜋䛸䜣䛹ぢ䜙䜜䛺䛔䠊୍᪉䠈ᒙᩘ䛜 10 ᒙ䛾ヨᩱ䛷䛿䠈✺ฟ䛧䛯㧗䛔 Jc 䛾䝢䞊䜽䜢♧䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䠊䛣䜜䛿䠈ab 㠃᪉ྥ䛻ἢ䛳䛯☢᮰⥺䛜䠈㠃≧䛻ศᕸ䛧䛯䝘䝜⢏Ꮚ䛻䜘䜚᭷ຠ䛻䝢䞁Ṇ䜑䛥䜜䛯䛯䜑䛸⪃
䛘䜙䜜䜛䠊

Tc[K]

pure750

Jc [MA/cm2]

㻝䠊䛿䛨䜑䛻㧗 ㉸ఏᑟయ䛾ᛂ⏝䛾ᣑ኱䛾䛯䜑䛻䛿䠈䛭䛾␗᪉ᛶ䜢ᨵၿ䛧䛶䠈䛒䜙䜖䜛༳ຍ☢ሙ᪉ྥ䛷㧗䛔⮫⏺㟁ὶᐦᗘ Jc 䜢ᚓ䜛ᚲせ䛜䛒䜛䠊1 ḟඖ䝢䞁䛸 3 ḟඖ䝢䞁䜢⤌䜏ྜ䜟䛫䛯䝝䜲䝤䝸䝑䝗☢᮰䝢䞁䝙䞁䜾䜢ᑟධ䛩䜛䛣䛸䛷䠈3 ḟඖ䝢䞁䛾䜰䝅䝇䝖ຠᯝ䜘䜚 Jc 䛾␗᪉ᛶ䛾ᨵၿ䛜䜘䜚ᮇᚅ䛷䛝䜛[1]䠊
ᮏ◊✲䛷䛿䠈ᨃఝከᒙ⭷ἲ䛻䜘䜚ᇶᯈ ᗘ䜔ᒙᩘ䜢ไᚚ䛧䛶䠈BaSnO3(BSO)䝘䝜⢏Ꮚ䜢 3 ḟඖ䝢䞁䛸䛧䛶 YBa2Cu3Oy(YBCO)ⷧ⭷୰䛻ศᕸ䛥䛫䠈䛥䜙䛻㔜䜲䜸䞁↷ᑕ䛻䜘䜚ᰕ≧Ḟ
㝗䜢 1 ḟඖ䝢䞁䛸䛧䛶ᑟධ䛩䜛䛣䛸䛷䠈䝝䜲䝤䝸䝑䝗☢᮰䝢䞁䝙䞁䜾䜢ᵓ⠏䛧䠈Jc 䛾☢ሙゅᗘ౫Ꮡᛶ䛻ᑐ䛩䜛䝘䝜⢏Ꮚ䛾⢏ᚄ䛚䜘䜃䠈✵㛫ศᕸ䛾ᙳ㡪䛻䛴䛔䛶ㄪ䜉䛯䠊

pure750
pure770
BSO(1,100)750
BSO(1,100)770
BSO(10,10)770

1

0.5
-30

0

30

60

90

120

T [deg.]Fig䠊1 Angular dependence of Jc at (a) T = 65 K䠈B = 1 T䠈(b) T = 65 K䠈B = 5 T䠊ཧ⪃ᩥ⊩㻌
[1] T. Horide, et al.: Supercond. Sci. Technol. 26(2013) 075019

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p05

Y 系機械特性ᐇ⏝ 5(%&2 ㉸㟁ᑟ⥺࡟࠾ࡅࡿ⮫⏺㟁ὶࡢ୍㍈ṍ౫Ꮡᛶ
Uniaxial Strain Dependence of Critical Current of Practical REBCO Wires

Ic / Ic0㛗ᮧග㐀㸦ᛂ⏝⛉Ꮫ◊㸧⏫ᒇಟኴ㑻㸦኱ྠ኱㸧+DPSVKLUH'DPLDQ㸦'XUKDP኱㸧OSAMURA Kozo (RIAS); MACHIYA Shutaro (Daido Univ.); and HAMPSHIRE Damian (Durham Univ.)
E-mail: kozo_osamura@rias.or.jp㻌ᐃ䛧䛯ᒁᡤṍ䜢䜒䛸䛻ィ⟬䛻䜘䜚 㻣㻣㻌 㻷 䛻䛚䛡䜛 㻾㻱㻮㻯㻻 ㉸㟁㻝䠊䛿䛨䜑䛻㻌
ᑟᒙ䛻⏕㉳䛩䜛ᒁᡤṍ 㻭㻾㻱㻮㻯㻻 䜢ồ䜑䛯䚹㻌
6XSHUSRZHU6X1$0 ➼ࡢᐇ⏝ 5(%&2 ㉸㟁ᑟ⥺ࡢ⮫⏺㟁ὶࡢ୍㍈ṍ౫Ꮡᛶࢆ )LJ ࡟♧ࡍࡼ࠺࡟ D ༢⣧࡟ᘬᙇṍ
1.02ࢆ༳ຍࡍࡿ᪉ἲࠊ E VSULQJERDUG ࡟㈞ࡾ௜ࡅ࡚ᅽ⦰࠿ࡽ
Superpowerᘬᙇࡢ඲୍㍈ṍࢆ༳ຍࡍࡿ᪉ἲ>@࡛ ᐃࡋࡓࠋ୍᪉ィ⟬1
࡟ࡼࡾ D  E ࡢ᮲௳࡟ࡼࡾ⏕ࡎࡿ . ࡟࠾ࡅࡿ㉸㟁ᑟᒙ࡟ຍࢃࡿ⇕ṍࢆ⪃៖ࡋࡓᒁᡤṍ࡟ᑐࡋ࡚⮫⏺㟁ὶࢆࣉ
Tape on SBࣟࢵࢺࡍࡿ࡜ D  E ࡢ୧ࢹ࣮ࢱࢆྜ⌮ⓗ࡟ㄝ᫂ࡍࡿࡇ
0.98࡜ࡀ࡛ࡁࡓࠋࡘࡲࡾ⮫⏺㟁ὶࡢ┿ࡢṍ౫Ꮡᛶࢆ▱ࡿࡓࡵ࡟ࡣࠊ㉸㟁ᑟᒙࡑࡢࡶࡢ࡟ຍࢃࡿᒁᡤṍ࡟ᑐࡍࡿ⪃ᐹࡀ
0.96
ᚲせ࡛࠶ࡿࡇ࡜ࢆᐇドࡋࡓࡢ࡛ሗ࿌ࡍࡿࠋ
0.94

Tape

0.92

0.9
-0.6

-0.4

-0.2

0

0.2

0.4

0.6

A (%)

1.1

1

Tape on SB

Ic / Ic0'
Fig. 1 Two techniques for evaluating of uniaxial strain
dependence of Ic, where G10 is insulator, SG is strain gage,and SB is springboard, respectively.
㻌㻞䠊ヨ㦂᪉ἲ㻌౪ヨᩱ䛻䛿ᕷ㈍䛥䜜䛶䛔䜛䚸㻿㼡㼜㼑㼞㼜㼛㼣㼑㼞㻘㻌 㻿㼡㻺㻭㻹 䛾 㻞 ✀㢮䛾 㻾㻱㻮㻯㻻 䝔䞊䝥⥺ᮦ䜢⏝䛔䛯䚹ᓥὠ〇సᡤ〇ᘬᙇヨ㦂ᶵ䜢⏝䛔 㻲㼕㼓㻚㻝 䛻♧䛩ヨᩱ㒊ศ䜢ᾮయ❅⣲䛻ᾐₕ䛧䚸ヨᩱ䛻㟁ᅽ➃Ꮚ䜢ྲྀ䜚௜䛡䚸䝏䝱䝑䜽㒊ศ䛛䜙㟁ὶ䜢ὶ䛧䛶 㻵㻙㼂 ᐃ䜢⾜䛔⮫⏺㟁ὶཬ䜃䡊್䜢Ỵᐃ䛧䛯䚹䜎䛯 㻿㼜㼞㼕㼚㼓㻙㻤㻌 㻮㻸㻠㻡㼄㼁䛻䛚䛔䛶 㻲㼕㼓㻚㻌 㻝 䛸ྠᵝ䛺἞ල䜢⏝䛔䛶༳ຍṍ䛾ୗ䛷䛾㉸㟁ᑟᒙ䛻⏕㉳䛩䜛ᒁᡤṍ䛾 ᐃ䜢ᐊ 䛷⾜䛳䛯䚹㻌㻌㻟䠊ᐇ㦂⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻲㼕㼓㻚㻌㻞㻌 䛻 㻿㼡㼜㼑㼞㼜㼛㼣㼑㼞 䛾䝔䞊䝥䛻䛴䛔䛶䚸䛭䜜䛮䜜 㻲㼕㼓㻚㻌㻝䛾἞ල䜢⏝䛔䛶 ᐃ䛧䛯⮫⏺㟁ὶ䛾༳ຍṍ౫Ꮡᛶ䜢♧䛩䚹䛴䜎䜚㻔㼍㻕䠄㼀㼍㼜㼑䠅䛾䜘䛖䛻ᘬᙇṍ䜢༳ຍ䛧䛶 ᐃ䛩䜛䛸 㻭㻪㻜 䛾⠊ᅖ䛷䛾⮫⏺㟁ὶ䛾ኚ໬䜢ㄪ䜉䜛䛣䛸䛜䛷䛝䜛䚹㻔㼎㻕㻔㼀㼍㼜㼑㻌 㼛㼚㻌㻿㻮㻕䛾ሙྜ䛿ヨᩱ䝔䞊䝥䜢䝝䞁䝎௜䛡䛧䛯䝇䝥䝸䞁䜾䝪䞊䝗䜢ᘬᙇ䛚䜘䜃ᅽ⦰䛩䜛䛣䛸䛻䜘䜚ᅽ⦰ṍ䛛䜙ᘬᙇṍ䛾⠊ᅖ䛷⮫⏺㟁ὶ䜢 ᐃ䛩䜛䛣䛸䛜䛷䛝䜛䚹㻌㻲㼕㼓㻚㻌㻞 䛻♧䛥䜜䜛䜘䛖䛻 㻭㻪㻜 䛾㡿ᇦ䛷୧⪅䛾⮫⏺㟁ὶ䛾༳ຍṍ౫Ꮡᛶ䜢ぢ䜛䛸䚸䛭䛾౫Ꮡᛶ䛻㐪䛔䛜䛒䜛䛣䛸䛜ゎ䜛䚹㼀㼍㼜㼑㻌 㼛㼚㻌 㻿㻮 䛷䛿⮫⏺㟁ὶ䛾ṍ౫Ꮡᛶ䛻ᴟ኱䛜⌧䜜䛶䛔䜛䚹䛣䛾㢧ⴭ䛺┦㐪䛿ヨᩱ䝔䞊䝥䜢䝇䝥䝸䞁䜾䝪䞊䝗䛻䝝䞁䝎௜䛡䛩䜛䛣䛸䛻䜘䜚 㻾㻱㻮㻯㻻 ㉸㟁ᑟᒙ䛻⏕㉳䛩䜛ᒁᡤṍ䛜ኚ໬䛧䛯䛣䛸䛻㉳ᅉ䛩䜛䛸⪃䛘䜙䜜䜛䚹䛭䛣䛷 㼀㼍㼜㼑 䛭䛾䜒䛾䚸䝇䝥䝸䞁䜾䝪䞊䝗䛻䝝䞁䝎௜䛡䛧䛯 㼀㼍㼜㼑 䛾ྛ䚻䛻䛴䛔䛶ᐊ 䛷

Fig.2 Normalized critical current as a function of applied strain
for Superpower tapes measured by means of (a) (FS) and (b)(SB) of Fig. 1.
㻌㻲㼕㼓㻚㻌 㻟 䛻ᒁᡤṍ 㻭㻾㻱㻮㻯㻻 䛾㛵ᩘ䛸䛧䛶つ᱁໬䛧䛯⮫⏺㟁ὶ䜢䝥䝻䝑䝖䛧┤䛧䛯䚹୧⪅䛾䝕䞊䝍䛿 㻭㻾㻱㻮㻯㻻 䛻䛴䛔䛶⁥䜙䛛䛻㐃⥆䛧䛶᥋⥆䛧䛶䛔䜛䛣䛸䚸⮫⏺㟁ὶ䛾ᴟ኱䛜ᅽ⦰ṍഃ䛻఩⨨䛩䜛䜘䛖䛻䛺䛳䛯䚹㻌
㻌

Tape

0.9

0.8

Superpower

0.7

0.6
-1

-0.8

-0.6

-0.4

-0.2

AREBCO (%)

0

0.2

0.4



Fig.3 Normalized critical currents obtained by two techniques
as a function of local strain exerted on REBCO layer for
Superpower tape.
䜎䛯㻿㼡㻺㻭㻹䝔䞊䝥䛻䛴䛔䛶䜒ྠᵝ䛾⤖ᯝ䜢ᚓ䜛䛣䛸䛜䛷䛝䛯䛣䜢☜ㄆ䛧䛶䛔䜛䚹㻌㻌ཧ⪃ᩥ⊩㻌
1. K Osamura, S Machiya, D P Hampshire, Y Tsuchiya, T
Shobu, K Kajiwara, G Osabe, K Yamazaki, Y Yamada andJ Fujikami, 2014 Uniaxial strain dependence of the criticalcurrent of DI-BSCCO tapes Supercond. Sci. Technol. 27
085005 (11pp)

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p06

Y 系機械特性㼅㻮㻯㻻 ⥺ᮦ䛾」ྜ᭤䛢ヨ㦂䛻䜘䜛ṍ䜏䛾ศᕸ䛸㉸㟁ᑟ≉ᛶ㻌㻾㼑㼘㼍㼠㼕㼛㼚㻌㼎㼑㼠㼣㼑㼑㼚㻌㼐㼑㼠㼑㼞㼕㼛㼞㼍㼠㼕㼛㼚㻌㼛㼒㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼜㼞㼛㼜㼑㼞㼠㼥㻌㼍㼚㼐㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼑㼐㻌㼟㼠㼞㼍㼕㼚㻌㼍㼜㼜㼘㼕㼑㼐㻌㼠㼛㻌㼅㻮㻯㻻㻌㼠㼍㼜㼑㻌㼎㼥㻌㼏㼛㼙㼜㼘㼑㼤㻌㼎㼑㼚㼐㼕㼚㼓㻌㻌
㇂㈅㻌 ๛䠈㻸㻱㻱㻌㻰㻻㻺㻳㻌㻾㼅㼁㻺䠄ୖᬛ኱Ꮫ䠅䠗㙊⏣㻌 ኴ㝧䠈㔝ᮧ㻌 ᪂୍㻌 䠄᫂἞኱䠅䠗୰ᮧ㻌 Ṋᜏ㻌 䠄ி኱䠅䠗⟄஭㻌 ᗈ᫂㻌 䠄ᮾᕤ኱䠅䠗㻌ຊ▼㻌 ᾈᏕ䠈ᰗ㻌 㛗㛛䠈௒ᕝ㻌 ಙస㻌 䠄㻺㻵㻲㻿䠅㻌㼅㻭㻳㻭㻵㻌㼀㼟㼡㼥㼛㼟㼔㼕㻘㻌㻸㻱㻱㻌㻰㻻㻺㻳㻌㻾㼅㼁㻺㻌㻔㻿㼛㼜㼔㼕㼍㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻧㻌㻷㻭㻹㻭㻰㻭㻌㻴㼕㼞㼛㼔㼍㼞㼡㻘㻌㻺㻻㻹㼁㻾㻭㻌㻿㼔㼕㼚㼕㼏㼔㼕㻌㻔㻹㼑㼕㼖㼕㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻧㻌 㻌㻺㻭㻷㻭㻹㼁㻾㻭㻌㼀㼍㼗㼑㼠㼟㼡㼚㼑㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻧㻌㼀㻿㼁㼀㻿㼁㻵㻌㻴㼕㼞㼛㼍㼗㼕㻌㻔㼀㼛㼗㼥㼛㻌㻵㼚㼟㼠㼕㼠㼡㼠㼑㻌㼛㼒㻌㼀㼑㼏㼔㼚㼛㼘㼛㼓㼥㻕㻧㻌 㻌㻯㻴㻵㻷㻭㻾㻭㻵㻿㻴㻵㻌㻴㼕㼞㼛㼠㼍㼗㼍㻘㻌㼅㻭㻺㻭㻳㻵㻌㻺㼍㼓㼍㼠㼛㻌㼍㼚㼐㻌㻵㻹㻭㻳㻭㼃㻭㻌㻿㼔㼕㼚㼟㼍㼗㼡㻌㻔㻺㼍㼠㼕㼛㼚㼍㼘㻌㻵㼚㼟㼠㼕㼠㼡㼠㼑㻌㼒㼛㼞㻌㻲㼡㼟㼕㼛㼚㻌㻿㼏㼕㼑㼚㼏㼑㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㼟㼡㼥㼛㼔㼕㻙㼥㼍㼓㼍㼕㻬㼟㼛㼜㼔㼕㼍㻚㼍㼏㻚㼖㼜㻌㻌㻟䠊ᐇ㦂⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻝䠊䛿䛨䜑䛻㻌
㻲㼕㼓㼡㼞㼑㻌㻞㻔㼍㻕䛿䚸༳ຍ䛥䜜䛯ṍ䜏䛾ศᕸ䜢ィ 䛧䛯⤖ᯝ䛷䛒㟁☢ຊᖹ⾮䝁䜲䝹㻔㻲㼛㼞㼏㼑㻌㻮㼍㼘㼍㼚㼏㼑㼐㻌㻯㼛㼕㼘㻦㻌㻲㻮㻯㻕䛿䚸䝦䝸䜹䝹䜛䚹㻺㼛㻚㻝 䛿 㻲㼃 ṍ䜏䛸 㻞㻜㻹㻼㼍 䛾ᘬᙇ䜚ṍ䜏䜢༳ຍ䛧䛯᫬䛾ศᙧ≧䜢䛧䛯䝁䜲䝹䛷䛒䜚䚸䝣䞊䝥ᛂຊ䛸ྥᚰຊ䛜ᖹ⾮䛩䜛≉ᕸ䛷䛒䜚䚸⥺ᮦ㛗ᡭ᪉ྥ䛾㍈䛻ᑐ䛧䛶䜋䜌ᑐ⛠䛺ṍ䜏ศᕸ㛗䜢ᣢ䛴䚹㟁ຊ㈓ⶶ⿦⨨䛻䛚䛔䛶䛿䚸኱䛝䛺䜶䝛䝹䜼䞊䛾㈓䛻䛺䛳䛶䛔䜛஦䛜䜟䛛䜛䚹䛣䛾᮲௳䛷䛿䚸㻲㼃 ᭱኱ṍ䜏䜢༳ຍⶶ䛿䜘䜚኱䛝䛺☢ሙ䛾Ⓨ⏕䜢ព࿡䛩䜛䛯䜑䚸䝁䜲䝹䜢ᵓᡂ䛩䜛䛧䛶䜒䚸Ic 䛚䜘䜃 㼚 ್䛾ຎ໬䛿ㄆ䜑䜙䜜䛺䛛䛳䛯䚹䛥䜙䛻 㻱㼃ᑟయ䛻䛛䛛䜛ᛂຊ䜒኱䛝䛟䛺䜛䚹≉䛻㧗 ㉸ఏᑟయ䜢⏝䛔䛶኱ᐜ㔞䛾䝁䜲䝹䜢〇స䛩䜛ሙྜ䚸㻲㻮㻯 䛜᭱䜒㐺䛧䛶䛔䜛䛸ゝṍ䜏䠄᭱኱ 㻜㻚㻠㻝㻑䠅䜢༳ຍ䛧䚸ᘬᙇ䜚ᛂຊ 㻝㻣㻜㻹㻼㼍 䛚䜘䜃䛘䜛䚹୍᪉䛷䚸㻲㻮㻯 〇స᫬䛻䛿䚸」㞧䛺ᕳ䛝⥺ᶵ䜢⏝䛔䛶ᶵ㻞㻜㻜㻹㻼㼍 䜢༳ຍ䛧䛯⤖ᯝ䛜ྛ䚻㻺㼛㻚㻞㻘㻺㼛㻚㻟 䛷䛒䜛䚹㻲㼃㻘㻱㼃 䛚Ეⓗ䛻⬤䛔䝔䞊䝥⥺ᮦ䜢ᕳ䛔䛶䛔䛟ᚲせ䛜䛒䜚㼇㻝㼉䚸䛣䛾䛸䛝䜘䜃ᘬᙇṍ䜏䛜」ྜⓗ䛻༳ຍ䛥䜜䛶䛔䜛䛯䜑䚸ṍ䜏䛾ศᕸ⥺ᮦ䛻䛿䚸ᖜ᪉ྥ䚸ཌ䜏᪉ྥ䚸䛭䛧䛶㛗ᡭ᪉ྥ㍈࿘䜚䛾᤬䜚
䛿 y ㍈ᑐ⛠䛷䛿䛺䛟䚸x㻩㻗㻝㻚㻞㻡㼙㼙䚸y䠙䠑䡚㻝㻜㼙㼙 ௜㏆䛻኱䛝䛺ṍ䜏䛜༳ຍ䛥䜜䜛䛯䜑䚸ᕳ⥺᫬䛻᝿ᐃ䛥䜜䜛ṍ䜏䛻ᑐ䛧䛶䚸ᘬᙇ䜚ṍ䜏䠄ṇ䛾ṍ䜏䠅䛜☜ㄆ䛷䛝䜛䚹䛣䛾䛸䛝䛾᭱኱್䛿チᐜ⠊ᅖ䜢㐺ษ䛻ホ౯䛧䛶䛚䛟ᚲせ䛜䛒䜛䚹㻌㻜㻚㻤㻑䜢㉸䛘䛶䛔䜛஦䛜 ᐃ䛾⤖ᯝ᫂䜙䛛䛻䛺䛳䛯䚹䛣䜜䜙䛻ᚑ䛳䛶ᮏ◊✲䛷䛿䚸㻲㻮㻯 䛾ᕳ⥺᫬䛻᝿ᐃ䛥䜜䜛」ྜ᭤䛢䚸ᑐᛂ䛩䜛 㻱㻶 ≉ᛶ䠄㻲㼕㼓㻚㻞㻔㼎㻕䠅䜢ぢ䜛䛸䚸ᛴ⃭䛻 Ic 䛚䜘䜃 㼚 ್䛜䛚䜘䜃ᘬᙇṍ䜏䛻ᑐ䛩䜛㉸㟁ᑟ≉ᛶ䜢ホ౯䛧䚸㻲㻮㻯 䛾ᕳ⥺ຎ໬䛧䛶䛚䜚䚸㼚 ್䛿 㻞㻞㻑䛾ῶᑡ䚸Ic 䛿 㻝㻞㻑௨ୖຎ໬䛧䛶䛔䜛ᕤ⛬䛻䛚䛡䜛㉸㟁ᑟ≉ᛶຎ໬䜢ᢚไ䛩䜛஦┠ⓗ䛸䛩䜛䚹㻌஦䛜䜟䛛䛳䛯䚹㻌
㻌ᕳ⥺ᕤ⛬䜢⪃៖䛩䜛䛸䚸㻲㼃 䛚䜘䜃 㻱㼃 䛾᭱኱ṍ䜏⠊ᅖෆ㻞䠊ᐇ㦂⿦⨨㻌䛻䛚䛔䛶䛿䚸ᕳ⥺᫬䛾ᘬᙇᛂຊ䜢 㻝㻣㻜㻹㻼㼍 ௨ෆ㻔⥺ᮦ䛾チᐜ䝁䜲䝹タィᴫᛕᅗ䛸᝿ᐃ䛥䜜䜛ṍ䜏䛾ᴫ␎䜢 㻲㼕㼓㻚㻝 䛻♧䛧ᘬ䛳ᙇ䜚ᙉᗘ䛿᭱኱ 㻠㻜㻜㻹㻼㼍㻕䛻䛩䜛஦䛜㔜せ䛰䛸⪃䛘䜙䜜䛯䚹䝁䜲䝹䛾኱༙ᚄ䛿 㻝㻡㻜㼙㼙㻘ᑠ༙ᚄ䛿 㻟㻜㼙㼙 䛷䛒䜚䚸㻠㻚㻞㻷 䛷䜛䚹㻌㻝㼗㻭 ㏻㟁䜢᝿ᐃ䛧䚸⵳✚䜶䝛䝹䜼䞊䛿ᑠᐜ㔞ᐇド䛸䛧䛶⣙㻝㻚㻞㼗㻶 䛻タᐃ䛧䛶䛔䜛䚹ᑟయ䛿䝔䞊䝥⥺ᮦ䜢✚ᒙ䛩䜛஦䛷〇స䛩䜛ணᐃ䛷䛒䜛䚹㻌㻲㻮㻯 ᕳ⥺᫬䛻༳ຍ䛥䜜䜛䝣䝷䝑䝖䝽䜲䝈䠄㻲㼃㻘㻦ᖜᗈ㠃䛻ᖹ⾜䛺㍈䜎䜟䜚䛾᭤䛢䠅䚸䜶䝑䝆䝽䜲䝈䠄㻱㼃㻦ཌ䜏᪉ྥ䜢᭤䛢䛾㍈䛸䛩䜛᭤䛢䠅䛚䜘䜃㛗ᡭ᪉ྥ䛾ᘬᙇṍ䜏䜢」ྜⓗ䛻༳ຍ䛷䛝䜛⿦⨨䛷䛒䜛㼇㻞㼉䚹䝔䞊䝥 㻝 ᮏ䛒䛯䜚䛾㻌 㻲㼃 䛾᭱኱༳ຍṍ䜏䛿 㻜㻚㻟㻟㻑㻘㻌㻱㼃 ṍ䜏䛿 㻜㻚㻠㻝㻑䛷䛒䜚䚸⥺ᮦ᩿㠃ᑍἲ 㻡㼙㼙 ᖜ㽢㻜㻚㻞㼙㼙 ཌ䜏䛻༳ຍ䛥䜜䜛᭱኱ᘬᙇᛂຊ䛿⣙ 㻞㻜㻜㻹㻼㼍 䛷䛒䜛䚹䝝䝇䝔䝻䜲ᇶᯈ䛸 㻯㼡 Ᏻᐃ໬ᒙ䛾✚ᒙᮦ䛸䛧䛶⥺ᮦ䛾䝲䞁䜾⋡䜢ホ౯䛩䜛䛸䚸⣙ 㻝㻡㻤㻳㻼㼍 䛸䛺䜚䚸᭱኱ᘬᙇṍ䜏䛿 㻜㻚㻝㻟㻑䛷䛒䜛䚹㻌䛣䜜䜙䛾ṍ䜏䛜」ྜⓗ䛻༳ຍ䛥䜜䛯ሙྜ䚸⥺ᮦᖜᗈ㠃䛿㠀୍ᵝ䛺ṍ䜏䛾ศᕸ䛻䛺䜛䛸⪃䛘䜙䜜䜛䚹㻞㼙㼙 ゅ䛾ṍ䜏䝀䞊䝆䜢㛗ᡭ᪉ྥ୰ᚰ㍈ᑐ⛠䚸x㻩㼼㻝㻚㻞㻡㼙㼙 䛾఩⨨䛻䚸⥺ᮦ㛗ᡭ᪉ྥᗙᶆ㻘㻌y㻩㻜㼙㼙㻘㻌㻝㻜㼙㼙㻘㻌㻝㻡㼙㼙㻘㻌 㻞㻡㼙㼙 䛾఩⨨䛻ィ 㻤㼏㼔䚸㈞䜚௜䛡䛶ṍ䜏ศᕸ䜢ホ౯䛧䛯䚹⮫⏺㟁ὶ䛚䜘䜃 㼚 ್䛾ホ౯䛿y㻩㼼㻞㻡㼙㼙 䛻ྲྀ䜚௜䛡䛯㟁ᅽ䝍䝑䝥䛻䜘䛳䛶㟁ᅽィ 䜢⾜䛔䚸㻝䃛㼂㻛㼏㼙 䛾㟁⏺Ⓨ⏕䜢䜒䛳䛶⮫⏺㟁ὶ್䜢ᐃ⩏䛧䛯䚹㻌㻌㻌㻌㻲㼕㼓㻚㻞㻌㻾㼑㼟㼡㼘㼠㼟㻌㼛㼒㻌㼙㼑㼍㼟㼡㼞㼑㼐㻌㼟㼠㼞㼍㼕㼚㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌㼍㼚㼐㻌㻌㼏㼛㼞㼞㼑㼟㼜㼛㼚㼐㼕㼚㼓㻌㻱㻙㻶㻌㼑㼤㼜㼞㼑㼟㼟㼕㼛㼚㼟㻚㻌 㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌 㼅㻚㻌 㻷㼕㼙㼡㼞㼍㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌 㼛㼒㻌 㻯㻿㻶㻌 㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌 㼂㼛㼘㻚㻌 㻥㻝㻌㻔㻞㻜㻝㻡㻕㻌㼜㻚㻣㻌㻞㻚㻌 㼀㻚㻌 㼅㼍㼓㼍㼕㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌 㼛㼒㻌 㻯㻿㻶㻌 㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌 㼂㼛㼘㻚㻌 㻥㻝㻌㻔㻞㻜㻝㻡㻕㻌㼜㻚㻤㻢㻌㻲㼕㼓㻚㻝㻌㻿㼏㼔㼑㼙㼍㼠㼕㼏㼟㻌㼛㼒㻌㻲㻮㻯㻌㼒㼛㼞㻌㻿㻹㻱㻿㻌㼍㼚㼐㻌㼑㼤㼜㼑㼏㼠㼑㼐㻌㼍㼜㼜㼘㼕㼑㼐㻌㼟㼠㼞㼍㼕㼚㼟̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p07

Y 系機械特性␗䛺䜛 㻯㼑㻻㻞 㠃ෆ㓄ྥᗘ䜢᭷䛩䜛 㻵㻮㻭㻰㻙㻹㼓㻻 ᇶᯈୖ 㻮㻴㻻 ῧຍ 㻳㼐㻮㻯㻻 ⥺ᮦ㻌䛻䛚䛡䜛⮫⏺㟁ὶ䛾䜂䛪䜏౫Ꮡᛶ㻌㻿㼠㼞㼍㼕㼚㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼏㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼛㼒㻌㻮㼍㻴㼒㻻㻟㻌㼐㼛㼜㼑㼐㻌㻳㼐㻮㼍㻞㻯㼡㻟㻻㼥㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼛㼚㻌㻵㻮㻭㻰㻙㻹㼓㻻㻌㼎㼡㼒㼒㼑㼞㼑㼐㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㼟㻌㼣㼕㼠㼔㻌㼐㼕㼒㼒㼑㼞㼑㼚㼠㻌㼕㼚㻙㼜㼘㼍㼚㼑㻌㼓㼞㼍㼕㼚㻌㼍㼘㼕㼓㼚㼙㼑㼚㼠㻌㼛㼒㻌㼠㼔㼑㻌㻯㼑㻻㻞㻌㼘㼍㼥㼑㼞㻌Ᏹబ⨾㻌 ㈗ྐ䠈୍㔝㻌 ♸ு䠈ྜྷ⏣㻌 㝯䠄ྡ኱䠅䠗Ⳣ㔝㻌 ᮍ▱ኸ䠄㻷㻱㻷䠅䠗⏫ᒇ㻌 ಟኴ㑻㻔኱ྠ኱Ꮫ䠅䠗⾰ᩫ㻌 㢧䠈࿴Ἠ㻌 ㍤㑻䠄㻿㻾㻸䠅㻌㼁㻿㻭㻹㻵㻌㼀㼍㼗㼍㼟㼔㼕㻘㻌㻵㻯㻴㻵㻺㻻㻌㼅㼡㼟㼡㼗㼑㻘㻌㼅㻻㻿㻴㻵㻰㻭㻌㼅㼡㼠㼍㼗㼍㻌㻔㻺㼍㼓㼛㼥㼍㻌㼁㼚㼕㼢㻚㻕㻧㻌㻿㼁㻳㻭㻺㻻㻌㻹㼕㼏㼔㼕㼚㼍㼗㼍㻌㻔㻷㻱㻷㻕㻧㻌㻹㻭㻯㻴㻵㼅㻭㻌㻿㼔㼡㼠㼍㼞㼛㻌㻔㻰㼍㼕㼐㼛㻌㼁㼚㼕㼢㻚㻕㻧㻌㻵㻮㻵㻌㻭㼗㼕㼞㼍㻘㻌㻵㼆㼁㻹㻵㻌㼀㼑㼞㼡㼛㻌㻔㻵㻿㼀㻱㻯㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼡㼟㼍㼙㼕㻙㼠㼍㼗㼍㼟㼔㼕㻝㻠㻬㼑㼑㼟㻚㼚㼍㼓㼛㼥㼍㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
㏆ᖺࠊ㧗≉ᛶࡢ BMO ῧຍ REBCO ⷧ⭷ࡀከᩘሗ࿌ࡉࢀ
࡚࠸ࡿ[1-2]ࠋࡇࢀࡽࡢ BMO ῧຍ REBCO ⥺ᮦࢆᶵჾᛂ⏝ࡍࡿࡓࡵ࡟ࡣࠊIc ࡢࡦࡎࡳຠᯝࢆホ౯ࡍࡿࡇ࡜ࡀᚲせ୙ྍḞ࡛࠶ࡿࠋࡇࢀࡲ࡛ࠊBHO ῧຍ GdBCO ⥺ᮦ࡟㛵ࡋ࡚ࠊ
BHO ῧຍ㔞ࡢቑຍ࡟క࠸ࠊIc ࡢ᭱኱್ࢆ࡜ࡿࡦࡎࡳࡢ್
(ࣆ࣮ࢡࡦࡎࡳ)ཬࡧ Ic ࡢࡦࡎࡳឤཷᛶࡀᑠࡉࡃ࡞ࡿ࡜࠸
࠺ሗ࿌ࢆࡋ࡚ࡁࡓ[3]ࠋࡲࡓࠊᨺᑕගࢆ⏝࠸ࡓෆ㒊⤖ᬗࡦࡎࡳホ౯ࡢ⤖ᯝࠊእ㒊ࡦࡎࡳ࡟ᑐࡍࡿ Ic ࡢኚ໬࡟ෆ㒊⤖ᬗࡦࡎࡳࡣ኱ࡁࡃᙳ㡪ࡋ࡞࠸ࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋࣆ
࣮ࢡࡦࡎࡳࡀᅽ⦰ഃ࡟ࢩࣇࢺࡍࡿࡢࡣࠊ⢏⏺ Ic ࡢࡦࡎࡳ౫Ꮡᛶࡢ≉ᚩ࡛࠶ࡿࡓࡵࠊBHO ῧຍ GdBCO ⥺ᮦ࡟࠾ࡅࡿ Ic ࡢࡦࡎࡳ౫Ꮡᛶࡢኚ໬࡟ࡣࠊ⢏⏺࡟࠶ࡿ BHO ࡀᐤ୚ࡋ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿࠋ
Fig. 1 Bending strain dependence of Ic for Pure-GdBCO CCs Theᮏ◊✲࡛ࡣࠊ⢏⏺ࡢ BHO ࡀ GdBCO ⥺ᮦ࡟࠾ࡅࡿ⮫⏺
arrows indicate the peak strains.
㟁ὶࡢࡦࡎࡳ౫Ꮡᛶ࡟୚࠼ࡿᙳ㡪ࢆホ౯ࡍࡿࡓࡵࠊ␗࡞
ࡿ CeO2 㓄ྥᗘࢆ᭷ࡍࡿ IBAD-MgO ᇶᯈࢆ⏝࠸࡚ BHO ῧຍ GdBCO ⥺ᮦࢆస〇ࡋࠊ᭤ࡆࡦࡎࡳ࡟ᑐࡍࡿ⮫⏺㟁ὶ≉ᛶࢆホ౯ࡋࡓࠋ
㻞䠊ᐇ㦂᪉ἲ㻌
Reel-to-Reel ⿦ ⨨ ࢆ ⏝ ࠸ ࡓ Nd:YAG-PLD ἲ ࡟ ࡼ ࡾ
IBAD-MgO ᇶᯈୖ࡟↓ῧຍ GdBCO ⥺ᮦࠊBHO ῧຍ
GdBCO ⥺ ᮦ ࢆ ྠ ᮲ ௳ ࡛ స 〇 ࡋ ࡓ ࠋ ᮏ ᐇ 㦂 ࡟ ⏝ ࠸ ࡓ
IBAD-MgO ᇶᯈࡢ CeO2 㓄ྥᗘࡣࡑࢀࡒࢀ'I=1.45°, 1.8°,
2.2°࡛࠶ࡿࠋBHO ࡜ GdBCO ࡢΰྜࢱ࣮ࢤࢵࢺࢆ⏝࠸ࠊ
BHO ࡢῧຍ㔞ࡀ 1.5 vol.%ࡢ⥺ᮦࢆస〇ࡋࡓࠋᇶᯈࡢ⛣ື㏿ᗘࢆ 0.02 mm/s ࡜ࡋࠊᇶᯈࡀᡂ⭷㡿ᇦ୰࡛ 780 ºC ࡟࡞ࡿࡼ࠺ࣄ࣮ࢱ࣮ ᗘࢆỴᐃࡋࡓࠋᶵᲔⓗ≉ᛶࡢホ౯࡟ࡣ
Goldacker ᆺヨ㦂ᶵࢆ⏝࠸ࠊᾮయ❅⣲୰࡛㐃⥆ⓗ࡟᭤ࡆኚᙧࢆຍ࠼࡞ࡀࡽྛࡦࡎࡳ࡛ Ic ࢆ ᐃࡋࡓࠋ㻟䠊ᐇ㦂⤖ᯝ㻌
XRD ᐃࡢ⤖ᯝ࠿ࡽࠊᮏ◊✲࡛స〇ࡋࡓࡍ࡭࡚ࡢ⥺ᮦࡣⰋዲ࡞ c ㍈㓄ྥࢆ♧ࡍࡇ࡜ࢆ☜ㄆࡋࡓࠋࡲࡓࠊ㉸ఏᑟᒙ࡛࠶ࡿ GdBCO ࡣ⥺ᮦ㛗ࡉ᪉ྥ࡟[100]ࠊ[010]㓄ྥ࡛࠶ࡾࠊ⭷ཌࡣ 200 nm ⛬ᗘ࡛࠶ࡿࡇ࡜ࢆ☜ㄆࡋࡓࠋ
Fig. 1 ࡟ᮏ◊✲࡛స〇ࡋࡓ↓ῧຍ GdBCO ⥺ᮦ࠾ࡅࡿ Ic
ࡢࡦࡎࡳ౫Ꮡᛶࢆ♧ࡍࠋᅗ୰▮༳ࡣࣆ࣮ࢡࡦࡎࡳࢆ♧ࡋ
࡚࠸ࡿࠋFig. 1 ࡼࡾࠊ↓ῧຍ GdBCO ⥺ᮦ࡟࠾࠸࡚ࡣ CeO2
㓄ྥᗘࢆኚ໬ࡉࡏ࡚ࡶࣆ࣮ࢡࡦࡎࡳࡣ኱ࡁࡃኚ໬ࡋ࡞࠸
ࡇ࡜ࡀࢃ࠿ࡗࡓࠋFig. 2 ࡟ BHO ῧຍ GdBCO ⥺ᮦ࡟࠾ࡅࡿ Ic ࡢࡦࡎࡳ౫Ꮡᛶࢆ♧ࡍࠋ↓ῧຍ GdBCO ⥺ᮦ࡟࠾࠸࡚
ࡣࣆ࣮ࢡࡦࡎࡳࡢኚ໬ࡀᑠࡉ࠿ࡗࡓࡢ࡟ᑐࡋ࡚ࠊBHO ῧຍ GdBCO ⥺ᮦ࡟࠾࠸࡚ࡣࣆ࣮ࢡࡦࡎࡳࡢ್ࡀ኱ࡁࡃኚ
໬ࡋ࡚࠸ࡿࡢࡀࢃ࠿ࡿࠋࡲࡓࠊࣆ࣮ࢡࡦࡎࡳࡢ್ࡣ CeO2
㓄ྥᗘ࡜┦㛵ࡀ࠶ࡾࠊCeO2 㓄ྥᗘࡀᑠࡉ࠸࡯࡝ࣆ࣮ࢡ఩
⨨ࡀᅽ⦰ࡦࡎࡳഃ࡟ࢩࣇࢺࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ
ᙜ᪥ࡣ BHO ῧຍ GdBCO ⥺ᮦ࡟࠾ࡅࡿࣆ࣮ࢡࡦࡎࡳࡢࢩ
ࣇࢺ࡟㛵ࡋ࡚ࠊ⢏⏺ Ic ࡢࡦࡎࡳ౫Ꮡᛶࢆ⪃៖ࡋࠊ㆟ㄽࢆ⾜࠺ணᐃ࡛࠶ࡿࠋ

Fig. 2 Bending strain dependence of Ic for BHO-doped GdBCO CCs.
The arrows indicate the peak strains.

㻠䠊ㅰ㎡㻌ᮏ◊✲䛾୍㒊䛿䚸⛉Ꮫ◊✲㈝⿵ຓ㔠(23226014, 25289358,
15H04252, 15K14301 ཬ䜃 15K14302)䛾ຓᡂ䚸ཬ䜃 SPring-8
฼⏝◊✲ㄢ㢟(ㄢ㢟␒ྕ䠖2015A1989)䛾ୗ䛷䝡䞊䝮䝷䜲䞁
BL46XU 䛻䛚䛡䜛 JASRI 䛾ຓᡂ䚸ཬ䜃㧗 ㉸㟁ᑟ䝁䜲䝹ᇶ┙ᢏ⾡㛤Ⓨ䝥䝻䝆䜵䜽䝖䛾୍⎔䛸䛧䛶⤒῭⏘ᴗ┬䛾ጤク䚸ཬ䜃䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡◊✲㛤Ⓨ䛾୍⎔䛸䛧䛶
NEDO 䛾ጤク䚸ཬ䜃㧗䜶䝛䝹䜼䞊ຍ㏿ჾ◊✲ᶵᵓ䞉㉸ఏᑟప ᕤᏛ䝉䞁䝍䞊䛾ຓᡂ䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹ཧ⪃ᩥ⊩㻌
1. P. Mele, et al.: Supercond. Sci. Technol.21 (2008) 032002
2. A. Tsuruta, et al.: Supercond. Sci. Technol. 27 (2014)
065001
3. T. Usami, et al.: TEIONKOUGAKU vol.50 No.8 (2015)
p.409

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p08

Y 系機械特性㉸㡢Ἴ䜢⏝䛔䛯 㻳㼐㻮㻯㻻 ⥺ᮦ䛾๤㞳デ᩿ἲ䛾ྍ⬟ᛶ◊✲㻌㻲㼑㼍㼟㼕㼎㼕㼘㼕㼠㼥㻌㻿㼠㼡㼐㼥㻌㼛㼚㻌㻰㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㻰㼕㼍㼓㼚㼛㼟㼕㼟㻌㻹㼑㼠㼔㼛㼐㼟㻌㼒㼛㼞㻌㻳㼐㻮㻯㻻㻌㻯㼛㼍㼠㼑㼐㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌 㻌㼁㼟㼕㼚㼓㻌㼁㼘㼠㼞㼍㼟㼛㼚㼕㼏㻌㼃㼍㼢㼑㼟㻌ᆏᕳ㻌 ⿱ኴ㻘㻌 ஧䝜ᐑ㻌 ᫭㻘㻌 㔝ᮧ㻌 ᪂୍䠄᫂἞኱Ꮫ䠅㻌
SAKAMAKI Yuta, NINOMIYA Akira, NOMURA Shinichi (Meiji Univ.)
E-mail: ce41044@meiji.ac.jp㻝㻚䛿䛨䜑䛻㻌
Y ⣔㧗 ㉸㟁ᑟ⥺ᮦ䛿ཌ䜏᪉ྥ䛻ᒙᵓ㐀䜢ᡂ䛧䛶䛚䜚䠈ᐇ⏝໬䛻㝿䛧䛶䛿䠈⥺ᮦ䛻⏕䛨䜛ᶵᲔⓗᛂຊ䛻㉳ᅉ䛩䜛ᒙ㛫๤㞳䛻䜘䜛⮫⏺㟁ὶ≉ᛶ䛾ຎ໬䜢᳨ウ䛩䜛ᚲせ䛜䛒䜛䚹
GdBCO ⥺ᮦ䛻⿦╔䛧䛯 1 ᑐ䛾 AE 䝉䞁䝃䛿䠈୍᪉䜢㉸㡢
Ἴ㏦ಙ⏝䛻䠈௚᪉䜢⥺ᮦ୰䜢ఏᦙ䛧䛯ಙྕ䛾ཷಙ⏝䛸䛧䛶⏝
䛔䛯䚹㏦ཷಙ㛫䛾ಙྕఏ㐩≉ᛶ䛾ኚ໬䜘䜚ᒙ㛫๤㞳デ᩿䛾ྍ⬟ᛶ䜢᳨ウ䛧䛯䚹GdBCO ⥺ᮦ䛾ᒙ㛫๤㞳䛿䠈⥺ᮦ䜢ຍ⇕䛩䜛䛣䛸䛻䜘䜚⾜䛔䠈 ᒙ㛫๤㞳䛾≧ែ䛿⥺ᮦ୰䜢ఏᦙ䛧䛯ಙྕ䛾࿘Ἴᩘ≉ᛶཬ䜃ඹ᣺Ⅼ㏆ഐ䛾᣺ᖜኚ໬䛻䜘䜚᥎ᐃ䛧䛯䚹㻞㻚GdBCO ⥺ᮦ䛾๤㞳デ᩿᪉ἲ㻌
Fig.1 䛻ᮏヨ㦂᪉ἲ䛾ᴫせ䜢♧䛩䚹๤㞳デ᩿᪉ἲ䛿䠈஧✀㢮䛾᪉ἲ䛷᳨ウ䛧䛯䚹䛭䛾᪉ἲ䛿䠈AE 䝉䞁䝃䛾ྲྀ䜚௜䛡఩⨨䛻㉳ᅉ䛧䛶䛔䜛䚹䛩䛺䜟䛱䠈஧✀㢮䛾๤㞳デ᩿᪉ἲ䛿⥺ᮦ䛻㉸㡢Ἴ䛾㏦ಙ⏝䠈ཷಙ⏝ AE 䝉䞁䝃䜢ྠ䛨㠃䛸㏫䛾㠃䛻ศᩓ㓄⨨䛩䜛᪉ἲ䠄Fig. 1(a)䠅䛸䠈⥺ᮦ䜢ᣳ䜐䜘䛖䛻ᑐྥ㓄⨨䛩䜛᪉ἲ䠄Fig. 1(b)䠅䛷䛒䜛䚹㉸㡢Ἴ㏦ಙ⏝䝉䞁䝃䛻䛿䝟䝹䝇≧ಙྕ䜢༳ຍ䛧䠈⥺ᮦෆ䜢ఏ᧛䛧䛯ಙྕ䛿䠈䛭䛾ఏᦙ⤒㊰䛻๤㞳䛺䛹䛾ᶵᲔⓗḞ㝗䛜Ꮡᅾ䛩䜛䛸䛝䛿䠈ཷಙಙྕ䛾࿘Ἴᩘ䜔᣺ᖜ䛻ኚ໬䛜⏕䛨䜛䛣䛸䛜᝿ᐃ䛥䜜䜛䚹䛭䛣䛷䠈䛣䜜䜙䛾㉸㡢Ἴఏ㐩≉ᛶ䜢ホ౯䛩䜛䛣䛸䛻䜘䜚䠈๤㞳䛾᭷↓䜢ุ᩿䛩䜛䛣䛸䛷ホ౯䛩䜛䛣䛸䛸䛧䛯䚹㻟㻚๤㞳デ᩿ヨ㦂⤖ᯝ๤㞳デ᩿ヨ㦂䛷౑⏝䛧䛯 Y ⣔⥺ᮦ䛿䠈䝣䝆䜽䝷〇䛾 10 mmᖜ䠈ຍ⇕᫬䛾᥎ዡ ᗘ䛿 200䉝௨ୗ䠈30 cm 䛾▷ᑻ⥺ᮦ䛷䛒䜛䚹㻌 ▷ᑻ⥺ᮦ䛾ᒙ㛫๤㞳䛿䠈 ᗘㄪᩚᶵ⬟௜䛝༙⏣ᑠᡭ䜢⏝䛔䛶୍㒊ศ䜢ຍ⇕䠄210-230䉝䠅䛧䛯䚹㉸㡢Ἴఏ㐩≉ᛶ䛿䠈ຍ⇕๓ᚋ䛷䛾ኚ໬䜢ᖖ ୰䛷 ᐃ䛧䛯䚹㏦ಙ⏝䝉䞁䝃䛻䛿䝟䝹䝇ᖜ 1Ɋ 䠈㟁ᅽಙྕ䠄ศᩓ㓄⨨䛩䜛᪉ἲ䛷䛿3 V 䠈ᑐ䠅䜢༳ຍ䛧䛶㉸㡢Ἴ䜢Ⓨ⏕䛥ྥ㓄⨨䛩䜛᪉ἲ䛷䛿30 mV
䛫䠈㏦ཷಙಙྕ䜢 FFT ฎ⌮䛧䛯䜒䛾䜢 50 ᅇᖹᆒ໬ฎ⌮䛧䛶ఏ㐩≉ᛶ䛸䛧䛯䚹ຍ⇕Ⅼ䛾᭱⤊฿㐩 ᗘ䛿䠈210Υ䛛䜙 10Υ้䜏䛷 230Υ䜎䛷ຍ⇕䛧䛯䚹䛣䛾䛸䛝䛾ຍ⇕᫬㛫䛿 2 ศ㛫䛷䛒䜛䚹ຍ⇕Ⅼ䛾 ᗘ䛿䠈ຍ⇕Ⅼ䛛䜙 1 cm 㛫㝸䛻㈞䛳䛯 2 䛴䛾⇕㟁ᑐ䛾 ᗘ ᐃ⤖ᯝ䜢ᇶ䛻䛧䛶䠈ᐃᖖ≧ែ䛷୍ᵝᮦᩱ䛾᮲௳ୗ䛷 1 ḟඖ⇕ఏᑟ᪉⛬ᘧ䜢⪃៖䛧䛶ồ䜑䛯䚹
Fig.2 䛿䠈㏦ཷಙ⏝䛾 AE 䝉䞁䝃䜢䛭䜜䛮䜜ศᩓ㓄⨨䛧䛯䛸䛝䛾ຍ⇕ฎ⌮ ᗘ䛻ᑐ䛩䜛㉸㡢Ἴఏ㐩≉ᛶ䛾ඹ᣺Ⅼ㏆ഐ䛾ኚ໬䛾୍౛䛷䛒䜛䚹䛣䛾䛸䛝䠈㏦ཷಙ⏝䝉䞁䝃䛿ྠ䛨㠃䛻⿦╔䛧䠈䝉䞁䝃㛫㊥㞳䛿 15 cm 䛷䛒䜛䚹䛣䜜䜘䜚䠈ຍ⇕฿㐩 ᗘ
䛜 220Υ䜎䛷䛿㢧ⴭ䛺ኚ໬䛜䜏䜙䜜䛺䛛䛳䛯䛜䠈230Υ䜎䛷ຍ⇕䛧䛯䛸䛝䠈190 kHz ㏆ഐ䛾ඹ᣺Ⅼ䛾ῶ⾶䛜ຍ⇕๓䛸ẚ㍑䛧
60%⛬ᗘ䛸㢧ⴭ䛻పୗ䛩䜛䛣䛸䜢☜ㄆ䛧䛯䚹
Fig.3 䛿,㏦ཷಙ⏝䛾 AE 䝉䞁䝃䜢 Fig.1(b)䛾䜘䛖䛻ᑐྥ㓄⨨䛥䛫䛶䠈䝉䞁䝃㒊ศ䜢ᅛᐃ䛧䠈⥺ᮦ䜢㛗ᡭ᪉ྥ䛻 2.5 mm 㛫㝸䛷䝇䝷䜲䝗䛥䛫䛯䛸䛝䛾ఏ㐩≉ᛶ䛾➨ 1 䝢䞊䜽࿘Ἴᩘ䛷䛾ಙྕᙉᗘ䜢ホ౯䛧䛯⤖ᯝ䛷䛒䜛䚹䛣䜜䜘䜚䠈ຍ⇕Ⅼ௜㏆䛷䛿ຍ⇕๓䛸ẚ㍑䛧䛶ῶ⾶䛜኱䛝䛟䛺䜛䛣䛸䛜☜ㄆ䛷䛝䛯䚹䛣䛾䛸䛝䛾➨ 1 䝢䞊䜽࿘Ἴᩘ䛿 ᐃ఩⨨䛻䜘䜚 2ࠥ6 kHz ⛬ᗘ䛪䜜䜛≧ែ䛷䛒䛳䛯䚹

䛣䛾䜘䛖䛻䠈୧᪉ἲ䛸䜒ຍ⇕䛻䜘䜚ᒙ㛫๤㞳䛜⏕䛨䠈๤㞳⟠ᡤ䛷䛾㉸㡢Ἴಙྕ䛻㢧ⴭ䛺≉ᛶኚ໬䜢☜ㄆ䛩䜛䛣䛸䛜䛷䛝䛯䚹㻠㻚䜎䛸䜑㻌
㉸㡢Ἴ䜢⏝䛔䛯 2 ✀㢮䛾๤㞳デ᩿᪉ἲ䛾ྍ⬟ᛶ䜢☜ㄆ䛧䛯䚹௒ᚋ䛿䠈䝁䜲䝹䛷䛾๤㞳➼䛾ᶵᲔⓗḞ㝗デ᩿䜈䛾㐺⏝䛾ྍ⬟ᛶ᳨ウ䛚䜘䜃ᶵᲔⓗᛂຊ䛻ᑐ䛩䜛≉ᛶ䛾๤㞳䛻䜘䜛ᙳ㡪䜢ㄪᰝ䛩䜛ணᐃ䛷䛒䜛䚹㻌

(a)

(b)
Fig. 1 Delamination diagnosis methods using ultrasonic waves
based on the discrete arrangement of the AE sensors (a) andthe opposite arrangement of the AE sensors (b).
.

Fig. 2 Frequency dependence of the ultrasonic transfer
characteristics on the heating temperature.

Fig. 3 Comparison of the AE signal intensity between theunheated sample and the heated sample around the resonancefrequency.

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p09

HTS 通電特性஺ᕪ䛧䛯㉸ఏᑟ䝘䝜䝇䝖䝸䝑䝥䛻䛚䛡䜛㟁ὶ㞟୰䛸⮫⏺㟁ὶ㻌
Current crowding and critical currents in crossed superconducting nanostrips

P





SC film

Ib

Ia

wb

wa

Channel



Gate



ChannelGate㻌㤿Ώ ᗣᚨ(⏘⥲◊)
MAWATARI Yasunori (AIST)
E-mail: y.mawatari@aist.go.jp㻌
3䠊༢⣧໬ yTron ᵓ㐀䛻䛚䛡䜛㟁ὶศᕸ䛸⮫⏺㟁ὶ
1䠊䛿䛨䜑䛻
ᮏ◊✲䛷䛿䠈Fig. 1 䛾 yTron ᵓ㐀䜢 Fig. 2 䛾䜘䛖䛻༢⣧໬᭱㏆䠈MIT 䛾䜾䝹䞊䝥䛻䜘䜚䠈㉸ఏᑟ䝘䝜䝇䝖䝸䝑䝥䜢⏝䛔䛧䛯㉸ఏᑟ䝘䝜䝇䝖䝸䝑䝥ᵓ㐀䛻䛴䛔䛶⌮ㄽⓗ⪃ᐹ䜢⾜䛳䛯䠊䛯᪂ᆺ䛾୕➃Ꮚ䝕䝞䜲䝇⣲Ꮚ䛜Ⓨ⾲䛥䜜䛯[1]䠊䛣䛾⣲Ꮚ䛿䠈༢⣧໬ yTron ᵓ㐀䛷䛿䠈ᖜ䛜 wa 䛚䜘䜃 wb 䛾 2 ᮏ䛾㉸ఏᑟ㉸ఏᑟ䝘䝜䝇䝖䝸䝑䝥䛜 Y Ꮠᙧ䛻஺ᕪ䛩䜛Ⅼ䛾㟁ὶ㞟୰䜢฼⏝䛧䠈䝏䝱䝛䝹㟁ὶ䛾⮫⏺㟁ὶ䛜䝀䞊䝖㟁ὶ䛻ᛂ䛨䛶ኚ໬䛩䝘䝜䝇䝖䝸䝑䝥䛾஺ᕪゅᗘ䜢䝊䝻䛸䛧䛶䛚䜚䠈䛭䜜䛮䜜䛾䝇䝖䝸䝑䜛୍✀䛾䜽䝷䜲䜸䝖䝻䞁[2]䛸䛧䛶ືస䛩䜛䜒䛾䛷䛒䜚䠈㉸ఏᑟ䝹䝥䛻ὶ䜜䜛㟁ὶ䜢 Ia 䛚䜘䜃 Ib 䛸䛩䜛䠊䞊䝥㟁ὶ䛾㠀◚ቯㄞ䜏ฟ䛧➼䜈䛾ᛂ⏝䛜᳨ウ䛥䜜䛶䛔䜛䠊
Clem 䛾᪉ἲ[3,4]䛻⩦䛔䠈䛣䛾༢⣧໬ yTron ᵓ㐀䛻䛚䛡䜛ᮏ◊✲䛷䛿䠈䛣䛾᪂ᆺ୕➃Ꮚ⣲Ꮚ䜢⡆␎໬䛧䛯㉸ఏᑟ䝘㟁ὶศᕸ䜢䠈➼ゅ෗ീ䛻䜘䜚ゎᯒⓗ䛻ồ䜑䛯䠊౛䛘䜀䠈Iawa䝜䝇䝖䝸䝑䝥ᵓ㐀䛻㟁ὶ䜢ὶ䛩ሙྜ䜢⪃䛘䠈㟁ὶศᕸ䛚䜘䜃⮫= Ibwb 䛜ᡂ❧䛩䜛ሙྜ䠈㟁ὶศᕸ䛿୍ᵝ䛷Ⅼ P 䛻䛚䛡䜛㟁⏺㟁ὶ䜢ゎᯒⓗ䛻ồ䜑䛯䠊䛣䛾᪂ᆺ⣲Ꮚ䛾ᇶᮏືస䛻䛴䛔ὶ㞟୰䜒↓䛔䠊୍᪉䠈Iawa 䛸 Ibwb 䛾್䛜㞳䜜䜛䜋䛹Ⅼ P 䛾㟁䛶⌮ㄽⓗ⪃ᐹ䜢⾜䛔䠈ᐇ㦂⤖ᯝ䛸ẚ㍑䛧䛯䠊
ὶ㞟୰䛿㢧ⴭ䛻䛺䜚䠈㔞Ꮚ໬☢᮰⥺䛜Ⓨ⏕䛧䜔䛩䛟䛺䜛䠊㻌
஺ᕪⅬ P ௜㏆䛻䛚䛡䜛㔞Ꮚ໬☢᮰⥺䛻㛵䛩䜛⮬⏤䜶䝛䝹
2䠊᪂ᆺ୕➃Ꮚ⣲Ꮚ䛾ᵓ㐀䞉ືసཎ⌮䜼䞊䜢ồ䜑䛶Ᏻᐃᛶ䜢ゎᯒ䛧䠈㔞Ꮚ໬☢᮰⥺䛜Ⅼ P 䛷Ⓨ⏕MIT 䛾䜾䝹䞊䝥䛿䠈ཌ䛥 10nm ⛬ᗘ䛾 NbN ㉸ఏᑟⷧ⭷䜢䛩䜛᮲௳䜘䜚⮫⏺㟁ὶ䜢ồ䜑䛯䠊䛭䛾⤖ᯝ䠈䝏䝱䝛䝹㟁ὶ䛾ຍᕤ䛧䛶䠈ᖜᩘ 100nm ⛬ᗘ䛾 2 ᮏ䛾㉸ఏᑟ䝇䝖䝸䝑䝥䛜 Y Ꮠ⮫⏺㟁ὶ Ia,c 䛿䠈ḟᘧ䛷୚䛘䜙䜜䜛䛣䛸䛜䜟䛛䛳䛯䠊ᆺ䛻ྜὶ䛩䜛䝘䝜ᵓ㐀䜢స〇䛧(Fig. 1)䠈᪂ᆺ୕➃Ꮚ⣲Ꮚ
Ia,cwa = Ibwb + J Kd ,(1)
“yTron” 䛸䛧䛶Ⓨ⾲䛧䛯[1]䠊䛣䛾୕➃Ꮚ⣲Ꮚ䛾 Gate ➃Ꮚ䜘䜚䝀䞊䝖㟁ὶ Ig 䜢䠈Drain ➃Ꮚ䜘䜚䝏䝱䝛䝹㟁ὶ Ich 䜢㏻㟁䛩䜛䛸䠈䛣䛣䛷䠈J = [2S (wa+wb)[ wawb]1/2, [ 䛿䝁䝠䞊䝺䞁䝇㛗䠈䛚䜘䜃Ich 䛾⮫⏺㟁ὶ䛜 Ig 䛻ᛂ䛨䛶ኚ໬䛩䜛䠊䛣䛾 yTron 䛿䠈༢୍ගKd 䛿ᑐ◚ቯ㟁ὶᐦᗘ䛻⭷ཌ d 䜢᥃䛡䛯㠃㟁ὶᐦᗘ䛷䛒䜛䠊Ꮚ᳨ฟჾ䛻䛚䛡䜛䝜䜲䝈䜢పῶ䛧䛯ㄞ䜏ฟ䛧ᅇ㊰䜔䠈㉸ఏᑟ䛯䛰䛧䠈Ia,cwa 䛿 Kd 䜢㉸䛘䜛䛣䛸䛿䛺䛔䛾䛷䠈(1)ᘧ䛿 0 <䝹䞊䝥㟁ὶ(䝹䞊䝥䛻䛚䛡䜛☢᮰㔞Ꮚ䛾ᩘ)䛾㠀◚ቯㄞ䜏ฟ
Ibwb < (1 䇶 J)Kd 䛾ሙྜ䛻᭷ຠ䛷䛒䜚䠈(1 䇶 J)Kd < Ibwb < Kd䛧➼䜈䛾ᛂ⏝䛜᳨ウ䛥䜜䛶䛔䜛䠊䛾ሙྜ䛿䠈Ia,cwa = Kd 䛷୚䛘䜙䜜䜛䠊㉸ఏᑟ䝘䝜䝇䝖䝸䝑䝥䛜㗦䛔ゅ䜢䜒䛳䛶᭤䛜䜛Ⅼ䛷䛿䠈୍⯡䛩䛺䜟䛱䠈䝀䞊䝖㟁ὶ Ib 䛾ቑຍ䛸䛸䜒䛻䝏䝱䝛䝹㟁ὶ䛾⮫䛻㟁ὶᐦᗘ䛜㧗䛟䛺䜛䠊䛣䛾㟁ὶ㞟୰(current crowding)䛻䜘
⏺㟁ὶ Ia,c 䛿(ቑຍ⋡ wawb 䛷)⥺ᙧ䛻ቑຍ䛩䜛䛜䠈Ib 䛜(1 䇶䜚㔞Ꮚ໬☢᮰⥺䛜Ⓨ⏕䛧䛶㟁ᅽ䜢⏕䛨䠈䝇䝖䝸䝑䝥䛾᭤䛜䜚䛾J)Kd 䜢㉸䛘䜛䛸 Ia,c 䛿㣬࿴䛧䛶୍ᐃ䛸䛺䜛䠊䛣䜜䜙䛾᣺⯙䛿ᐇゅᗘ䛜㗦䛟䛺䜛䜋䛹⮫⏺㟁ὶ䛿ᑠ䛥䛟䛺䜛[3,4]䠊Fig. 1 䛾㉸ఏ㦂䝕䞊䝍[1]䛸ᐃ㔞ⓗ䛻୍⮴䛩䜛䠊ᑟ䝇䝖䝸䝑䝥䛜஺ᕪ䛩䜛Ⅼ P 䛻䛚䛔䛶䛿䠈㟁ὶ㞟୰䛜Ⓨ⏕䛧䜔㻌䛩䛔䜘䛖䛻䠈䛒䛘䛶஺ᕪゅᗘ䛜㗦䛔䛟䛥䜃ᙧ䛻䛧䛶䛒䜛䠊䛯䛰ཧ⪃ᩥ⊩㻌䛧䠈䝀䞊䝖䛻䛚䛡䜛㟁ὶᐦᗘ䛸䝏䝱䝛䝹䛻䛚䛡䜛㟁ὶᐦ䛜➼䛧
[1] A. McCaughan, “The yTron: A nanoscale superconducting䛟䛺䜛䜘䛖䛻 Ig 䛚䜘䜃 Ich 䜢タᐃ䛩䜛䛸䠈Ⅼ P 䛷䜒㟁ὶ㞟୰䛜㉳
3-terminal device for inline readout of superconducting䛝䜛䛣䛸䛿䛺䛔䠊MIT 䛾䜾䝹䞊䝥䛿䠈䝀䞊䝖㟁ὶ Ig 䛾ቑຍ䛸䛸䜒currents,” presented at 16th International Workshop on Low
Temperature Detectors (LTD 16).
䛻䠈䝏䝱䝛䝹㟁ὶ Ich 䛾⮫⏺㟁ὶ䛜⥺ᙧ䛻ቑຍ䛩䜛䛣䛸䜢ᐇ㦂
http://ltd16.grenoble.cnrs.fr/spip.php?article21ⓗ䛻ぢฟ䛧䛶䛔䜛[1]䠊
[2] D. A. Buck, Proceedings of the IRE 44, 482 (1956).
Gate
Drain
[3] J. R. Clem and K. K. Berggren, Phys. Rev. B 84, 174510
Ig(2011).
Ich[4] J. R. Clem, Y. Mawatari, G. R. Berdiyorov, and F. M.
Peeters, Phys. Rev. B 85, 144511 (2012).

P

Ig + Ich
Ia + Ib

Source㻌Fig. 1: Configuration of the new superconducting threeterminal device element, “yTron”. The gate current Ig and thechannel current Ich are injected, and the current crowding
occurs at the sharp intersection P.

Fig. 2: Simplified yTron configuration with zero intersection
angle. Two superconducting nanostrips of widths wa and wb
carry transport currents Ia and Ib, respectively.

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p10

HTS 通電特性㛗ᑻ 㻾㻱㻙㻝㻞㻟 ⥺ᮦ䛻䛚䛡䜛ᒁᡤ⮫⏺㟁ὶ䛾㛗ᡭ᪉ྥศᕸ䛾⤫ィᛶ䛻㛵䛩䜛⪃ᐹ㻌㻿㼠㼍㼠㼕㼟㼠㼕㼏㼍㼘㻌㻵㼚㼢㼑㼟㼠㼕㼓㼍㼠㼕㼛㼚㻌㼛㼚㻌㻸㼛㼚㼓㼕㼠㼡㼐㼕㼚㼍㼘㻌㻯㼞㼕㼠㼕㼏㼍㼘㻌㻯㼡㼞㼞㼑㼚㼠㻌㻰㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌 㻌㼕㼚㻌㻸㼛㼚㼓㻌㻾㻱㻙㻝㻞㻟㻌㻯㼛㼍㼠㼑㼐㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㻌

56
5 mm

critical current sheet current density|Jx |(A/mm)
Ic(A)㻌ୖὠཎ㻌 ኱䠈ᮾᕝ㻌 ⏥ᖹ䠈஭ୖ㻌 ᫀ╬㻌 䠄஑኱䠅䠗⾰ᩫ㻌 㢧䠈࿴Ἠ㻌 ㍤ᮁ㻌 䠄㻿㻾㻸䠅䠗ᮌ㡲㻌 㝯ᬸ㻌 䠄஑኱䠅㻌㼁㻱㼀㻿㼁㻴㻭㻾㻭㻌㻰㼍㼕䠈㻴㻵㻳㻭㻿㻴㻵㻷㻭㼃㻭㻌㻷㼛㼔㼑㼕䠈㻵㻺㻻㼁㻱㻌㻹㼍㼟㼍㼥㼛㼟㼔㼕㻌㻔㻷㼥㼡㼟㼔㼡㻌㼁㼚㼕㼢㻚㻕㻧㻌㻵㻮㻵㻌㻭㼗㼕㼞㼍䠈㻵㼆㼁㻹㻵㻌㼀㼑㼞㼡㼛㻌㻔㻿㻾㻸㻕㻌㻧㻷㻵㻿㻿㻌㼀㼍㼗㼍㼚㼛㼎㼡㻌㻔㻷㼥㼡㼟㼔㼡㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼐㻚㼡㼑㼠㼟㼡㼔㼍㼞㼍㻬㼟㼡㼜㼑㼞㻚㼑㼑㼟㻚㼗㼥㼡㼟㼔㼡㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
㻟䠊⤖ᯝཬ䜃⪃ᐹ㻌㉸ఏᑟ⥺ᮦ䛿୍ḟඖ㟁ὶ㍺㏦፹య䛷䛒䜚ᒁᡤ≉ᛶపୗ㻲㼕㼓㻚㻌 㻞 䛻♧䛧䛯 㻵㼏 䛾✵㛫࿘Ἴᩘゎᯒ䛛䜙䚸୺䛯䜛ᣲື䛿 㻝㻛㼒㒊䛜㟁ὶ䛾᭱኱㍺㏦㔞䜢ไ㝈䛩䜛䛯䜑䚸㛗ᡭ᪉ྥ 㻵㼏 䛾ᆒ୍ᦂ䜙䛞䛻㉳ᅉ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹ᡃ䚻䛿᪤䛻䚸ᮏ㉁ⓗ䛺 㻵㼏䛾ᦂ䜙䛞䛿✵㛫ⓗ䛺┦㛵䜢᭷䛧䛶䛚䜚䚸䛭䛾⤫ィⓗ᣺䜛⯙䛔ᛶ䛾☜ಖ䛜ㄢ㢟䛸䛺䛳䛶䛔䜛䚹୍᪉䚸⌧ᅾ䛾䛸䛣䜝䛭䛾⤫ィ䛿 㼃㼑㼕㼎㼡㼘㼘 㛵ᩘ䛷グ㏙䛷䛝䜛䛣䛸䜢ሗ࿌䛧䛶䛔䜛㼇㻝㼉䚹୍᪉䚸㻲㼕㼓㻚㻌ᛶ䛻㛵䛩䜛䝰䝕䝹໬䛜༑ศ䛻㐍䜣䛷䛚䜙䛪䚸ᶵჾタィ䜔㧗㻝㻘㻌㻞 䛻ぢ䜙䜜䜛䜘䛖䛺࿘ᮇⓗ䛺 㻵㼏 పୗ㒊఩䛿እⓗせᅉ䛻⏤᮶ᆒ୍⥺ᮦᐇ⌧䜈䛾䝣䜱䞊䝗䝞䝑䜽䛻᭷⏝䛺ᣦᶆ䛾ᥦฟ䛜ᮇᚅ䛥䜜䛶䛔䜛䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸䝸䞊䝹ᘧ㉮ᰝᆺ䝩䞊䝹⣲Ꮚ䛧䚸㻲㼕㼓㻚㻌 㻟 䛻♧䛧䛯 㻵㼏 䛾䝠䝇䝖䜾䝷䝮䛾ప 㻵㼏 㒊ศ䛾䝔䜲䝹䛸䛧䛶㢧ᚤ㙾䜢⏝䛔䛶ᕼᅵ㢮⣔㧗 ㉸ఏᑟ䠄㻾㻱㻙㻝㻞㻟䠅⥺ᮦ䛾ᒁᡤ☜ㄆฟ᮶䜛䚹୧⪅䛿ู䛾⤫ィ஦㇟䛸⪃䛘䜙䜜䚸㻾㻱㻙㻝㻞㻟 ⥺ᮦ㻵㼏 ศᕸ䜢 ᐃ䛧䚸䛭䛾⤫ィᛶ䛻㛵䛩䜛⪃ᐹ䜢⾜䛖䛣䛸䛻䜘䛳䛶䚸䛾㛗ᑻ᪉ྥ䛾ᆒ୍ᛶ䛾ᦂ䜙䛞䛿஧㔜 㼃㼑㼕㼎㼡㼘㼘 㛵ᩘ䛻䜘䛳䛶䜘㻵㼏 ᦂ䜙䛞䛾ᣲື䛻㛵䛩䜛᪂䛯䛺ホ౯ᣦᶆ䛾ᥦฟ䜢┠ᣦ䛧䛯䚹㻌䜚⢭ᗘⰋ䛟グ㏙䛥䜜䜛䛣䛸䛜䜟䛛䛳䛯䚹䛣䛾ᵝ䛺 㻵㼏 ᦂ䜙䛞䛾⤫㻌ィᏛⓗゎᯒ䛿䚸Ḟ㝗㒊䛾ẚ⋡䜔䚸እ᮶Ḟ㝗䜢㝖䛔䛯〇⭷ἲ㻞䠊᪉ἲ㻌䛾䝫䝔䞁䝅䝱䝹䛺䛹䜢ᐃ㔞ⓗ䛻ホ౯䛷䛝䜛Ⅼ䛷᭷ຠ䛷䛒䜛䚹㻌 㻌 ᚟㉮ᰝ䛧䛯䝩䞊䝹⣲Ꮚ䛻䜘䛳䛶 㻾㻱㻙㻝㻞㻟 ⥺ᮦ䛾ṧ␃☢
㻌⏺ศᕸ䜢ྲྀᚓ䛧䚸㻮㼕㼛㼠㻙㻿㼍㼢㼍㼞㼠๎䛾㏫ၥ㢟䜢ゎ䛟䛣䛸䛻䜘䛳䛶䚸ㅰ㎡㻦㻌ᮏ◊✲䛿䚸⤒⏘┬୪䜃 㻭㻹㻱㻰 䛻䜘䜛㧗 ㉸㟁ᑟ䝁䜲㻌⮫⏺㟁ὶᐦᗘ䛻ᑐᛂ䛩䜛䝅䞊䝖㟁ὶᐦᗘ䛾㠃ෆศᕸ䜢ホ౯䝹ᇶ┙ᢏ⾡㛤Ⓨ䝥䝻䝆䜵䜽䝖䛂ඹ㏻ᇶ┙ᢏ⾡䛾◊✲㛤Ⓨ䛃䛾䛧䛯䠄㻲㼕㼓㻚㻌㻝㻌㻔㼍㻕䠅䚹䜎䛯䚸䛭䜜䜢ᖜ᪉ྥ䛻✚ศ䛩䜛䛣䛸䛷ᒁᡤ 㻵㼏ຓᡂ䜢ᚓ䛶⾜䛳䛯䜒䛾䛷䛒䜛䚹㻌㻌䛾㛗ᡭ᪉ྥศᕸ䜢ᚓ䛯䠄㻲㼕㼓㻚㻌㻝㻌㻔㼎㻕䠅䚹㻌㼇㻝㼉㻌㼀㻚㻌㻷㼕㼟㼟㻌㼑㼠㻌㼍㼘㻚㻘㻌㻭㻿㻯㻌㻞㻜㻝㻠㻘㻌㻝㻹㻻㼞㻞㻯㻙㻜㻡㻘㻌㻭㼡㼓㻚㻌㻝㻝㻘㻌㻞㻜㻝㻠㻌
㻌

28
0

200
100
0
0

2

4

6

position (m)810㻲㼕㼓㻚㻝㻌
㻾㼑㼟㼡㼘㼠㼟㻌㼛㼎㼠㼍㼕㼚㼑㼐㻌㼎㼥㻌㻾㼀㻾㻙㻿㻴㻼㻹㻌㼒㼛㼞㻌㻡㻙㼙㼙㻙㼣㼕㼐㼑㻌㻾㻱㻙㻝㻞㻟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㻔㼍㻕㻌㻞㻰㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼏㼞㼕㼠㼕㼏㼍㼘㻌㼟㼔㼑㼑㼠㻌㼏㼡㼞㼞㼑㼚㼠㻌㼐㼑㼚㼟㼕㼠㼥㻌㼍㼚㼐㻌㻔㼎㻕㻌㼘㼛㼚㼓㼕㼠㼡㼐㼕㼚㼍㼘㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼘㼛㼏㼍㼘㻌㼏㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㼟㻌㻌㻌㻌
probability density

power spectrum (A2・m)

-4

10
-5
10
-6
10
-7
10
㻝㻛㼒㻌㻮㼑㼔㼍㼢㼕㼛㼞㻌
-8
10
-9
10
-10
10
㻼㼑㼞㼕㼛㼐㼕㼏㻌㻮㼑㼔㼍㼢㼕㼛㼞㻌
-11
10
-12
10
0.1
1
10

100

spatial frequency Q (1/m )㻌㻲㼕㼓㻚㻌㻞㻌
㻿㼜㼍㼠㼕㼍㼘㻌 㼜㼛㼣㼑㼞㻌 㼟㼜㼑㼏㼠㼞㼡㼙㻌 㼛㼒㻌 㼘㼛㼏㼍㼘㻌 㼏㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼣㼔㼕㼏㼔㻌㼟㼔㼛㼣㼑㼐㻌㻝㻛㼒㻌㼎㼑㼔㼍㼢㼕㼛㼞㻌㻔㼞㼑㼐㻌㼘㼕㼚㼑㻕㻌㼠㼛㼓㼑㼠㼔㼑㼞㻌㼣㼕㼠㼔㻌㼜㼑㼞㼕㼛㼐㼕㼏㻌㼎㼑㼔㼍㼢㼕㼛㼞㻌㻔㼎㼘㼡㼑㻌㼍㼞㼞㼛㼣㻕̿̿

170 180 190 200 210 220 230 240 250

critical current Ic (A)㻲㼕㼓㻚㻌㻟㻌
㻼㼞㼛㼎㼍㼎㼕㼘㼕㼠㼥㻌㼐㼑㼚㼟㼕㼠㼥㻌㼒㼡㼚㼏㼠㼕㼛㼚㻌㼛㼒㻌㼘㼛㼏㼍㼘㻌㼏㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㼟㻌㼐㼑㼟㼏㼞㼕㼎㼑㼐㻌㼎㼥㻌㼐㼛㼡㼎㼘㼑㻌㼃㼑㼕㼎㼡㼘㼘㻌㼒㼡㼚㼏㼠㼕㼛㼚㼟
第92回

2015年度秋季低温工学・超電導学会

3C-p11㛗ᑻ㧗

HTS 通電特性㉸ఏᑟ⥺ᮦ䛻䛚䛡䜛㟁ὶ䇷㟁ᅽ≉ᛶ䛾䝬䝹䝏䝇䜿䞊䝹䝰䝕䝸䞁䜾㻌

Multi-scale modeling of current-voltage characteristics in long length HTS tapes㻌ᮌ㡲㻌 㝯ᬸ䠈ᮾᕝ㻌 ⏥ᖹ䠈஭ୖ㻌 ᫀ╬䠈㕥ᮌ㻌 ໶䠄஑኱䝅䝇᝟䠅䠗㻌໭ཱྀ㻌 ோ䠄≀ᮦᶵᵓ䠅㻌
KISS Takanobu䠈 HIGASHIKAWA Kohei䠈 INOUE Masayoshi䠈 SUZUKI Takumi (Kyushu Univ.);
KITATUCHI Hitoshi (NIMS)
E-mail: kiss@ sc.kyushu-u.ac.jp㻌ㅰ㎡䠖ᮏ◊✲䛾୍㒊䛿䚸JST 䛾ᡓ␎ⓗ䜲䝜䝧䞊䝅䝵䞁๰ฟ᥎㐍䝥䝻䜾䝷䝮䠄S-䜲䝜䝧䠅䛂ḟୡ௦㕲㐨䝅䝇䝔䝮䜢๰䜛㉸ఏᑟᢏ⾡䜲䝜䝧䞊䝅䝵䞁䛃䛾ຓᡂ䜢ᚓ䛶⾜䛳䛯䜒䛾䛷䛒䜛䚹

Sheet current density0

V1|Jx| (A/mm)

20

V2

V3

40

V4

+

10 mm

Section:

P

M

N

20

30

40

Critical current
Ic (A)

150
100
50
0
0

10

50

60



Longitudinal position x (mm)Fig. 1 Ic variation in a Bi-2223 tape visualized by scanning
Hall-probe microscopy. Electric field criterion is 2 10-8
V/m.
80

(a)

Section P
Section M
Section N
Whole

70
60

V (ȝV)

50
40
30
20
10
0
0

50

100

150

200

250

I(A)

80

(b)

V_P
V_M
V_N
V_Whole7060
50
V (ȝV)

㻝䠊䛿䛨䜑䛻㻌
୍⯡䛻䚸㧗 ㉸ఏᑟ⥺ᮦ䛾 I-V ≉ᛶ䛿▷ᑻヨᩱ䜔䝬䜲䜽䝻䝤䝸䝑䝆䜢⏝䛔䛶 ᗘ䚸☢⏺౫Ꮡᛶ䜢ィ 䛧䚸䛭䛾⤖ᯝ䜢䜒䛸䛻ᶵჾタィ䛾Ⅽ䛾䝟䝷䝯䞊䝍䛜ᑟฟ䛥䜜䜛䚹➹⪅䜙䛿๓ᅇ䛾ሗ࿌䛷䚸㛗ᑻ⥺ᮦ䛾ᒁᡤ Ic ศᕸ䛾ィ ᡭἲ䜢㛤Ⓨ䛧䚸㛗ᑻ⥺ᮦ䛻䛚䛔䛶▷ᑻヨᩱ䛸䛿␗䛺䜛㛗࿘ᮇ䛾✵㛫ᦂ䜙䛞䛜Ꮡᅾ䛩䜛஦䜢ึ䜑䛶᫂䜙䛛䛸䛧䛯䚹䛩䛺䜟䛱䚸▷ᑻ⥺ᮦ䛾 ᐃ⤖ᯝ䛿䚸䛛䛺䜙䛪䛧䜒㛗ᑻ⥺ᮦ䛾᣺䜛⯙䛔䜢グ㏙ฟ᮶䛶䛚䜙䛪䚸䛣䛾஦䛜䚸኱ᆺ䛾㧗 ㉸ఏᑟ䝬䜾䝛䝑䝖䛾ྍタィᛶ䛾☜❧䜔Ᏻᐃᛶ䞉ಙ㢗ᛶ䛻኱䛝䛺ᙳ㡪䜢ཬ䜌䛧䛶䛔䜛䛸⪃䛘䜙䜜䜛䚹ᮏ◊✲䛷䛿䚸ᒁᡤ Ic ศᕸ䛸䝬䜽䝻䝇䜿䞊䝹䛷䛾 I-V ≉ᛶ䛾㛵ಀ䜢᫂䜙䛛䛸䛧䚸㛗ᑻ⥺ᮦ䛻㐺⏝ྍ⬟䛺 I-V ≉ᛶ䛾ゎᯒᘧ䜢ᑟฟ䛧䛯䚹ᮏ䝰䝕䝹䛾ᇶᮏᴫᛕ䛻ຍ䛘䚸㧗 ㉸ఏᑟ⥺ᮦ䛻䛚䛡䜛ᐇ ⤖ᯝ䛸䛾ẚ㍑䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻞䠊ᐇ㦂㻌ᕷ㈍䛾 Bi-2223 䝔䞊䝥⥺ᮦ䛻ᑐ䛧䛶䚸䝸䞊䝹ᘧ㉮ᰝᆺ☢
Ẽ㢧ᚤ㙾䠄RTR-SHPM䠅䜢⏝䛔䚸䝔䞊䝥㠃ෆ䛾䝅䞊䝖⮫⏺㟁ὶᐦᗘ Jc 䛾✵㛫ศᕸ䜢ィ 䛧䛯䚹㛗ᡭ(x)᪉ྥ䛾ศゎ⬟䛿
840 ȝm䚸 ᖜ(y)᪉ྥ䛾ศゎ⬟䛿 24 ȝm 䛷䛒䜛䚹ྛᗙᶆ఩⨨ x䛻䛚䛔䛶 y ᪉ྥ䛾㟁ὶᐦᗘ䜢✚ศ䛧⥺ᮦ䛾㛗ᡭ᪉ྥ䛾 Ic 䛾ኚ໬䜢ᑟฟ䛧䛯䚹Fig. 1 䛻ᚓ䜙䜜䛯⤖ᯝ䜢♧䛩䚹ᮏ ᐃ䛷䛿䚸┤ὶ☢໬䜘䜚 Jc 䜢ホ౯䛧䛶䛔䜛䛯䜑㟁⏺ᇶ‽䛿㏻㟁ἲ䛻ẚ䜉䠐᱆䜋䛹ᑠ䛥䛟䚸2㽢10-8 V/m 䛷䛒䛳䛯䚹䛭䛾⤖ᯝ䚸ᚓ䜙䜜䜛
Ic ್䛿㏻ᖖ䛾㟁⏺ᇶ‽䛻䜘䜛್䛻ẚ䜉⣙ 30 %⛬ᗘᑠ䛥䛺್䛸䛺䜛䚹䜎䛯䚸㧗ゎീᗘィ 䛾⤖ᯝ䚸Fig. 1 䛻♧䛩ᵝ䛻⥺ᮦ୰䛻ᒁᡤⓗ䛻 Ic 䛜 20 %⛬ᗘపୗ䛧䛶䛔䜛㡿ᇦ䛜Ꮡᅾ䛩䜛஦䜢᳨▱䛧䛯䚹ྠ୍䛾ヨᩱ䜢⏝䛔䛶䚸ᒁᡤⓗ䛺ᅄ➃Ꮚ ᐃ䜢⾜䛳䛯⤖ᯝ䜢 Fig. 2(a)䛻♧䛩䚹㟁ᅽ➃Ꮚ䜢 4 ⟠ᡤ䛻タ⨨䛧䚸
Fig. 1 䛻♧䛧䛯 3 䛴䛾༊㛫䚸P, M, N 䛸඲య䛻䛴䛔䛶 ᐃ䜢⾜䛳䛯䚹㻟䠊ᐇ㦂⤖ᯝཬ䜃⪃ᐹ㻌ᅄ➃Ꮚἲ䛻䛚䛔䛶䚸RTR-SHPM 䛷᳨ฟ䛧䛯ప Ic 㒊఩䛷䛾
Ic పୗ䛜☜ㄆฟ᮶䜛䚹䜎䛯䚸ヨᩱ඲య䛾༊㛫䛷⏕䛨䜛☢᮰䝣䝻䞊㟁ᅽ䛿䚸ᒁᡤⓗ䛺 Ic పୗ㡿ᇦ䛻䜘䜛㟁ᅽⓎ⏕䛜ᨭ㓄ⓗ䛺䛣䛸䛜ศ䛛䜛䚹୍᪉䚸೺඲㒊఩䛻䛚䛡䜛 Ic 䛿 200 A 䜢᭷䛧䛶
䛔䜛䚹Fig. 1 䛻♧䛧䛯 Ic (x)䛾⤖ᯝ䜢䜒䛸䛻䚸ྛ༊㛫䛾 I-V ≉ᛶ䜢ゎᯒⓗ䛻グ㏙䛧䛯⤖ᯝ䜢 Fig. 2(b)䛻♧䛩䚹ᐇ㦂⤖ᯝ䜢Ⰻ䛟෌⌧ฟ᮶䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹☢᮰䝣䝻䞊㟁ᅽ䛿䚸䝯䝌䝇䝁䝢䝑䜽㡿ᇦ䛻䛚䛡䜛㔞Ꮚ໬☢᮰䛾䝣䝻䞊䛻䜘䛳䛶ㄏ㉳䛥䜜䜛䛸⪃䛘䜙䜜䜛䚹ᡃ䚻䛿᪤䛻䚸㧗㉸ఏᑟయ䛾㟁ὶ㍺㏦≉ᛶ䛻㛵䛧䛶䚸䝻䞊䝺䞁䝒ຊ䛻䜘䜛☢᮰䛾౵ධ䜢୍✀䛾䝟䞊䝁䝺䞊䝅䝵䞁㐣⛬䛸䛧䛶グ㏙ฟ᮶䜛஦䜢♧䛧䛶䛔䜛[1]䚹䛣䛣䛷䚸௨ୗ䛾௬ᐃ䜢䜒䛸䛻䚸ᚑ᮶䛾䝟䞊䝁䝺䞊䝅䝵䞁䝰䝕䝹䜢ᣑᙇ䛧䛶㛗ᑻ⥺ᮦ䛾ゎᯒᘧ䜢ᑟฟ䛧䛯䚹௬ᐃ䠖1) 䝘䝜䝇䜿䞊䝹䛾☢᮰䝢䞁䝙䞁䜾䛾ᣲື䛿ሙᡤ䛻౫䜙䛪ྠᵝ䚹2) RTR-SHPM 䛷ᚓ䛯 Ic 䛾✵㛫ኚ໬䛿䚸䝬䜽䝻䝃䜲䝈䛾Ḟ㝗㉳ᅉ䛻䜘䜛᭷ຠ᩿㠃✚䛾ኚ໬䜢♧䛩䚹䛺䛚䚸䝥䝻䝉䝇䛻䜘䜛 Ic ྥୖ䜔䚸X ⥺ CT 䜢⏝䛔䛯ప Ic 㡿ᇦ䛾ほ ⤖ᯝ䛿䛣䜜䜙䛾௬ᐃ䜢ᨭᣢ䛧䛶䛔䜛[2, 3]䚹

40
30
20
10
0
0

50

100

150

200

250

I (A)

Fig. 2 (a) Site specified measurements on I-V characteristics
and (b) analytical expression based on the Ic(x) shown in
Fig. 1.
ཧ⪃ᩥ⊩㻌[1] K. Yamafuji and T. Kiss, Physica C 258 (1996) 197[2] 㕥ᮌ໶䜋䛛䚸2015 ᖺᗘ⛅Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍◊✲Ⓨ⾲఍䚸1C-a02[3] ஭ୖᫀ╬䜋䛛䚸2015 ᖺᗘ⛅Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍
◊✲Ⓨ⾲఍䚸1C-a03

̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p12

HTS 通電特性஧ᒙ䝒䜲䝇䝖㧗

㉸ఏᑟ䜿䞊䝤䝹䛾䝒䜲䝇䝖᪉ྥ䛻䜘䜛஺ὶᦆኻ≉ᛶ䜈䛾ᙳ㡪㻌㻵㼚㼒㼘㼡㼑㼚㼏㼑㻌㼛㼒㻌㼠㼣㼕㼟㼠㻌㼐㼕㼞㼑㼏㼠㼕㼛㼚㻌㼠㼛㻌㻭㻯㻌㼘㼛㼟㼟㻌㼕㼚㻌㼠㼣㼛㻌㼘㼍㼥㼑㼞㼑㼐㻌㼠㼣㼕㼟㼠㼑㼐㻌㻴㼀㻿㻌㼏㼍㼎㼘㼑㻌㻌ᑠᕝ㻌 ⣧㻘㻌 ⚟஭㻌 ⪽㻘㻌 ᒸ㻌 ᚭ㞝㻘㻌 బ⸨㻌 Ꮥ㞝㻘㻌 ཎ㻌 ♸㍜㻘㻌 ᮾᲄ㻌 ❳ඣ㻘㻌 ᑠᕝ㻌 ᬛஓ䠄᪂₲኱Ꮫ䠅㻌㻻㻳㻭㼃㻭㻌㻶㼡㼚㻘㻌㻲㼁㻷㼁㻵㻌㻿㼍㼠㼛㼟㼔㼕㻘㻌㻻㻷㻭㻌㼀㼑㼠㼟㼡㼛㻘㻌㻿㻭㼀㻻㻌㼀㼍㼗㼍㼛㻘㻌㻴㻭㻾㻭㻌㼅㼡㼟㼡㼗㼑㻘㻌㼀㻻㻶㻻㻌㻾㼥㼡㼖㼕㻘㻌㻻㻳㻭㼃㻭㻌㼀㼛㼙㼛㼥㼍㻌㻔㻺㼕㼕㼓㼍㼠㼍㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻌㻌♧ࡋ࡚࠸ࡿࠋࡑࢀࡒࢀࡢࣃ࣓࣮ࣛࢱࡣࢣ࣮ࣈ᩿ࣝ㠃ࢆ㏻㻝䠊䛿䛨䜑䛻㻌
㐣ࡍࡿ㟁ὶ㔞ࢆ♧ࡋ࡚࠸ࡿࠋ㧗 ㉸ఏᑟࢣ࣮ࣈࣝࡢ㛤Ⓨ࡟࠾࠸࡚ࠊ஺ὶ㏻㟁᫬࡟⏕ᅗ㸰ࡼࡾࠊ6= ᧍ࡾࠊ66 ᧍ࡾ࡜ࡶ࡟ 㸸 ௜㏆࡛ࢣࡌࡿ஺ὶᦆኻࡢపῶࡣࠊࢣ࣮ࣈࣝࡢ㏦㟁⬟ຊࠊᏳᐃᛶࠊ
࣮ࣈࣝ඲యࡢ஺ὶᦆኻࡣ᭱ᑠ್ࢆ♧ࡍࠋࡇࡇ࡛ࠊࢣ࣮ࣈ
ࣛࣥࢽࣥࢢࢥࢫࢺ࡟┤⤖ࡍࡿࡓࡵࢣ࣮ࣈࣝᵓ㐀ࡀ஺ὶ㏻ࣝ࡟࠾ࡅࡿᦆኻࡀⓎ⏕ࡍࡿせᅉ࡜ࡋ࡚ࠊ㏻㟁࡟ࡼࡿᦆኻ
㟁ᦆኻ࡟ཬࡰࡍᙳ㡪ࢆホ౯ࡍࡿ஦ࡣ㔜せ࡜࡞ࡿࠋᮏ◊✲࡜࿘ᅖࡢ⥺ᮦࡀసࡿ☢⏺࡟ࡼࡿᦆኻࡀ᝿ᐃࡉࢀࡿࠋෆᒙ
ࡣෆᒙ S ᧍ࡾ࡜ࡋࠊእᒙࢆ S ᧍ࡾ࡜ Z ᧍ࡾࡢ㉸ఏᑟࢣ࣮ࡢ⥺ࡣෆᒙ࡜እᒙࡢ⥺ࡀసࡿ⦪☢⏺࡟᫹ࡉࢀ࡚࠾ࡾࠊእ
ࣈࣝࢆᶍᨃࡋࡓ஧ᒙࢶ࢖ࢫࢺ㧗 ㉸ఏᑟࢣ࣮ࣈࣝࢆసᡂ
ᒙࡢ⥺ࡣෆᒙࡢ⥺ࡀసࡿ࿘᪉ྥ☢⏺࡜እᒙࡢ⥺ࡀసࡿ⦪ࡋࠊ⇕ⓗ ᐃἲ࡟ࡼࡾෆእᒙࡢ஺ὶ㏻㟁ᦆኻࢆࡑࢀࡒࢀ
☢⏺࡟ࡼࡿᦆኻࡀ⏕ࡌࡿࠋ6= ᧍ࡾ࡜ 66 ᧍ࡾࢆẚ㍑ࡍࡿ
ᐃࡋࡓࠋෆእᒙࡢ㟁ὶࣂࣛࣥࢫࢆኚ໬ࡉࡏࡓ᫬ࡢ஺ὶ
࡜ࠊⱝᖸ࡛ࡣ࠶ࡿࡀᦆኻࡀ᭱ᑠ࡜࡞ࡿ᮲௳ࡀࠊ6= ᧍ࡾࡢᦆኻ≉ᛶ࡬ࡢᙳ㡪ࡢㄪᰝࢆ⾜ࡗࡓࠋ࡯࠺ࡀෆഃ࡟㟁ὶࢆὶࡋࡓ࡯࠺࡟ࢩࣇࢺࡋ࡚࠸ࡿࠋࡇࡢ
㻌⌮⏤࡜ࡋ࡚ෆእᒙࡢ⥺ᮦᮏᩘࡀ␗࡞ࡿࡓࡵࠊෆእᒙࡢస
㻞䠊䜿䞊䝤䝹䛾ᵓ㐀䛸ᐇ㦂᪉ἲ㻌ࡿ⦪☢⏺ࡢ኱ࡁࡉࡣ 㸸 ࡛ࡣ࡞ࡃࠊ6= ᧍ࡾࡢሙྜ࡟ᅗ  ࡟஧ᒙࢶ࢖ࢫࢺ㧗 ㉸ఏᑟࢣ࣮ࣈࣝࡢᴫ␎ᅗࢆ♧ࡣෆእᒙࡀసࡿ⦪☢⏺ࡀ࢟ࣕࣥࢭࣝࡍࡿ᪉ྥ࡟⏕ࡌࡿࡓ
ࡍࠋ%L$J ⥺ᮦࢆෆᒙ┤ᚄ PP ࡟  ᮏࠊእᒙ┤ᚄࡵࠊෆᒙ࡜እᒙࡢࢺ࣮ࢱࣝࡢ㟁ὶ್ࡀ࡯ࡰ➼ࡋ࠸᫬࡟ᦆ
PP ࡟  ᮏࢆࡑࢀࡒࢀ⊂❧ࡉࡏ࡚ᕳࡁ௜ࡅࡓࠋᑟయ㍈ኻࡀᑠࡉࡃ࡞ࡿࡇ࡜ࡀண᝿ࡉࢀࡿࠋ
࡟ᑐࡍࡿࢶ࢖ࢫࢺゅᗘࡣෆእᒙඹ࡟  ᗘ࡜ࡋࠊ⥺ᮦ㛫㊥ᮏ◊✲࡛♧ࡋࡓ㏻ࡾ㉸ఏᑟࢣ࣮ࣈࣝࢆᶍᨃࡋࡓᵓ㐀࡟㞳ࢆ PP ࡜ࡋࡓࠋ ᐃࡍࡿ㉸ఏᑟ⥺ᮦ⾲㠃࡟⇕㟁ᑐࢆྲྀ࠾ࡅࡿ஺ὶᦆኻ≉ᛶࢆホ౯࡛ࡁࡿࡇ࡜࠿ࡽࠊ௒ᚋࠊࢶ࢖
ࡾ௜ࡅࠊ⥺ᮦࢆⓎἻࢫࢳ࣮࡛ࣟࣝᣳࡳ㎸ࡴࡇ࡜࡛᩿⇕ࡋࢫࢺࣆࢵࢳࠊᑟయᚄࠊ⥺ᮦࡢ✀㢮࡞࡝ࢆኚ࠼࡚ྠᵝࡢᐇ஺ὶᦆኻ࡟ࡼࡿ ᗘୖ᪼ࡢ ᐃࢆ⾜ࡗࡓࠋෆᒙࡢ⥺ᮦࢆ㦂ࢆ⾜࠺ࡇ࡜࡟ࡼࡾయ⣔ⓗ࡟஺ὶᦆኻホ౯ࢆ⾜࠺ணᐃ࡛┤ิ᥋⥆ࡋࡓ࡜ࡁࡢ⮫⏺㟁ὶ್ࡣ $ࠊእᒙࡢ⥺ᮦࢆ┤࠶ࡿࠋิ᥋⥆ࡋࡓ᫬ࡢ⮫⏺㟁ὶ್ࡣ $ ࡜࡞ࡗࡓࠋ
ෆᒙ䚸እᒙ䛾䛭䜜䛮䜜䛾⥺ᮦ䛿┤ิ᥋⥆䛷᥋⥆䛥䜜䛶䛚䜚䚸㻞 㟁※䜢⏝䛔䛭䜜䛮䜜䛾ᒙ䛾㟁ὶ䝞䝷䞁䝇䜢ኚ໬䛥䛫䛶஺ὶᦆኻ≉ᛶ䛾ホ౯䜢⾜䛳䛯䚹䜎䛯䚸ᐇ㦂䜢⡆᫆䛻ᐇ᪋䛩䜛䛯-3
6 10
䜑䛻እᒙෆᒙ䛭䜜䛮䜜䛾㟁ὶ್䜢 㻤㻭 䛛䜙 㻢㻠㻭 䜎䛷 㻤㻭 䛪䛴ImS-Zቑຍ䛥䛫䛶ᐇ㦂䜢⾜䛔䚸䛣䛾᫬䛾 ᐃ್䛛䜙䝣䜱䝑䝔䜱䞁䜾䜢
1200A
-3
5 10
1100A
⾜䛔䛭䜜䛮䜜䛾㟁ὶ䝞䝷䞁䝇䛻䛚䛡䜛஺ὶᦆኻ≉ᛶ䜢ᑟฟ
1000A
-3
䛧䛯䚹㻌
4 10
900A
㻌
800A
-3
3 10
㻟䠊ᐇ㦂⤖ᯝ㻌
700A
600A
ᅗ㸰࡟ 6= ᧍ࡾ࡜ 66 ᧍ࡾࡢ஧ᒙࢶ࢖ࢫࢺ㧗 ㉸ఏᑟ
-3
500A
2 10
ࢣ࣮ࣈࣝ࡟࠾࠸࡚㟁ὶࣂࣛࣥࢫࢆኚ໬ࡉࡏࡓ࡜ࡁࡢ஺ὶ
400A
ᦆኻ≉ᛶࢆ♧ࡍࠋࡑࢀࡒࢀࡢᅗࡢ⦪㍈ࡣࢣ࣮ࣈࣝ඲యࡢ
-3
1 10஺ὶᦆኻࠊᶓ㍈ࡣ⥺ᮦ㸯ᮏᙜࡓࡾࡢෆእᒙࡢ㟁ὶࡢẚࢆ♧ࡋ࡚࠸ࡿࠋ⦪㍈ࡢ஺ὶᦆኻࡣෆᒙࠊእᒙࡑࢀࡒࢀ௦⾲
0
50:50
100:0
0:100
ⓗ࡞㸯ᮏࡢ஺ὶᦆኻࢆ ᐃࡋࠊࡑࢀࡒࢀࡢᮏᩘ࡛࠿ࡅ࡚
Transport current ratio( Outside : Inside)ᑟฟࡋࡓࠋࡲࡓࠊࡑࢀࡒࢀࡢᅗࡢ㟁ὶ್ࡣࠊᕥഃࡀእᒙ
ࡢ㟁ὶ್ࡀ኱ࡁࡃࠊྑഃࡀෆᒙࡢ㟁ὶ್ࡀ኱ࡁ࠸ࡇ࡜ࢆ
(J/m/cycle)

Transport current loss Q

t

㻌



-3

6 10

I

m

S-S

1200A
1100A
1000A
900A
800A
700A
600A
500A
400A

-3

-3

4 10
(J/m/cycle)

Transport current loss Q

t

5 10

-3

3 10

-3

2 10

-3

1 10

0
100:0

50:50

0:100

Transport current ratio( Outside : Inside))LJ6FKHPDWLFLOOXVWUDWLRQRIWZROD\HUWZLVWHG
+76FDEOH

)LJ$&WUDQVSRUWFXUUHQWORVVHVLQWZLVWHGWZROD\HU+76FDEOHYVWUDQVSRUWFXUUHQWUDWLR̿̿

第92回

2015年度秋季低温工学・超電導学会

3C-p13

HTS 通電特性☢ሙ㌿ྥᯈᑟධ䛻䜘䜛 㻮㼕㻞㻞㻞㻟 ㉸㟁ᑟ䝁䜲䝹䛾஺ὶ≉ᛶ㻌㻭㻯㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㼍㻌㼜㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㼕㻞㻞㻞㻟㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼏㼛㼕㼘㻌㼡㼟㼕㼚㼓㻌㼍㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼘㼡㼤㻌㼐㼑㼒㼘㼑㼏㼠㼛㼞㻌ᮾᕝ㻌 ບᘺ䠈㒔⠏㻌 ၨኴ䠄㫽⩚ၟ⯪㧗ᑓ䠅㻌㼀㼛㼓㼍㼣㼍㻌㻾㼑㼕㼥㼍㻘㻌㼀㼟㼡㼦㼡㼗㼕㻌㻷㼑㼕㼠㼍㻌㻔㻺㻵㼀㻘㼀㼛㼎㼍㻌㻯㼛㼘㼘㼑㼓㼑㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㻝㻡㻡㻜㻞㻬㼓㻚㼠㼛㼎㼍㻙㼏㼙㼠㻚㼍㼏㻚㼖㼜㻌㻝䠊䛿䛨䜑䛻㻌
㏆ᖺ䚸㉸㟁ᑟ䝸䝙䜰䛺䛹䛷ὀ┠䛥䜜䛶䛔䜛㉸㟁ᑟᢏ⾡䛿⯪⯧᥎㐍ືຊ⏝䝰䞊䝍➼䚸ᵝ䚻䛺ศ㔝䛷ᛂ⏝䛥䜜䛶䛔䜛䚹䛭䛾୍䛴䛷䛒䜛㉸㟁ᑟᅇ㌿ᶵ䛿ᚑ᮶ᶵ䛸ẚ㍑䛧䛶ᑠᆺ໬䚸㧗ຠ⋡໬䛜ᐇ⌧ྍ⬟䛷䛒䜛䛯䜑◊✲䛜㐍䜑䜙䜜䛶䛔䜛䚹㻌㉸㟁ᑟ䝁䜲䝹䛿㉸㟁ᑟᅇ㌿ᶵ䛾㔜せ䛺ᵓᡂせ⣲䛷䛒䜛䚹㉸㟁ᑟ䝁䜲䝹䛾⮫⏺㟁ὶ≉ᛶ䛿㐠㌿㟁ὶ䜢Ỵᐃ䛩䜛㔜せ䛺䝟䝷䝯䞊䝍䛷䛒䜛䚹ᮏ◊✲䛾☢ሙ㌿ྥᯈ䛸䛿㉸㟁ᑟ䝁䜲䝹䛾ᕳ⥺䛾ᖜ᪉ྥ䛻䛒䛯䜛䝁䜲䝹䛾ୖୗ㠃䛻ྲྀ䜚௜䛡䜛☢ᛶᮦᩱ䛷ᵓᡂ䛥䜜䛯✚ᒙᯈ䛾䛣䛸䛷䛒䜛䚹䛣䜜䜢⏝䛔䜛䛣䛸䛷䚸┤ὶ㟁ὶୗ䛻䛚䛔䛶⥺ᮦ䛾 㼍㻙䠾㠃䛻㙐஺䛩䜛☢᮰䜢ᢚไ䛧䚸⮫⏺㟁ὶ≉ᛶ䜢ྥୖྍ⬟䛷䛒䜛䛣䛸䛜ඛ⾜◊✲䛻䜘䜚䜟䛛䛳䛶䛔䜛㼇㻝㼉䚹㻌
஺ὶ㟁ὶୗ䛻䛚䛡䜛㉸ఏᑟ䝁䜲䝹䛻䛿ኚື☢⏺䛻㉳ᅉ䛩䜛஺ὶᦆኻ䛜Ⓨ⏕䛩䜛䛣䛸䛛䜙䚸☢ሙ㌿ྥᯈ䜢⏝䛔䛶䛭䛾ኚື☢⏺䜢ᢚไ䛷䛝䜛䛸⪃䛘䛯䚹ᮏ◊✲䛷䛿஺ὶ㟁ὶ㏻㟁᫬䛻䛚䛔䛶☢ሙ㌿ྥᯈ䛾ຠᯝ䛾᳨ド䜢┠ⓗ䛸䛧䛯䚹㻮㼕㻞㻞㻞㻟 ⥺ᮦ䜢ᕳ⥺䛧䛯ᑠᆺヨస䝁䜲䝹䜢〇స䛧䚸஺ὶ㟁ὶୗ䛷䛾☢ሙ㌿ྥᯈ䛾᭷↓䛻䜘䜛㐣Ώ≉ᛶ䛾ẚ㍑⤖ᯝ䜢ሗ࿌䛩䜛䚹㻌㻞䠊☢ሙ㌿ྥᯈ䛻䛴䛔䛶㻌㉸㟁ᑟ䝁䜲䝹䛾⮫⏺㟁ὶ್䛿䚸ᕳ⥺䛥䜜䛶䛔䜛㉸㟁ᑟ⥺ᮦ䛻㙐஺䛩䜛☢᮰ᐦᗘ䛾኱䛝䛥ཬ䜃䛭䛾ゅᗘ䛻౫Ꮡ䛩䜛䚹䛣
䛾ゅᗘ䛻䜘䛳䛶ὶ䛩䛣䛸䛜䛷䛝䜛㟁ὶ䚸༶䛱䚸ᅇ㌿ᶵ䛻䛚䛡䜛㐠㌿㟁ὶ䛜Ỵᐃ䛥䜜䜛䚹䛣䛾㟁ὶ䛿㉸㟁ᑟᮦᩱ䛾␗᪉ᛶ䛛䜙䚸⥺ᮦ䛾 㼍㻙䠾㠃䛛䜙ぢ䛶 㻥㻜㼻䛻㏆䛵䛟䜋䛹ὶ䜜䛻䛟䛟䛺䜛䚹㻌㻲㼕㼓㻚㻝 䛿☢ሙ㌿ྥᯈ䛾᭷↓䛻䜘䜛☢᮰⥺䛾ኚ໬䜢♧䛩䚹☢
ሙ㌿ྥᯈ䛿㉸㟁ᑟ䝁䜲䝹䛾ୖୗ䛻☢᮰ࢆ㏻ࡋࡸࡍ࠸☢ᛶయ࡛ᵓᡂࡉࢀࡿᮦᩱ䜢ᦚ㍕䛩䜛䛣䛸䛷䚸⥺ᮦ䛾 㼍㻙䠾㠃䛻㙐஺䛩䜛☢᮰䜢ᢚไ䛷䛝䜛䚹䜘䛳䛶䚸⮫⏺㟁ὶ≉ᛶ䜢ྥୖ䛻⧅䛜䜛᭷ຠ䛺ᡭẁ䛸䛔䛘䜛㼇㻝䠈㻞㼉䚹㻌㻟䠊ᐇ㦂‽ഛཬ䜃᪉ἲ㻌㻲㼕㼓㻚㻞㻔㼍㻕䛻ヨస㉸㟁ᑟ䝁䜲䝹䜢♧䛩䚹㉸ఏᑟ⥺ᮦ䛸䛧䛶䚸஺ὶ⏝㉸㟁ᑟ⥺䛸䛧䛶〇ရ໬䛥䜜䛶䛔䜛 㻮㼕㻞㻞㻞㻟 ⥺㻔㻰㼕㻙㻮㻵㻿㻯㻯㻻㻌㼀㼥㼜㼑㻙㻭㻯㼀㻘ఫ཭㟁ᕤ䠅䜢౑⏝䛧䛶䛔䜛䚹㻲㼕㼓㻚㻞㻔㼎㻕䛿ヨస㉸㟁ᑟ䝁䜲䝹⏝䛻㌾☢ᛶᮦᩱ䜢✚ᒙ䛧䛶〇స䛧䛯☢ሙ㌿ྥᯈ䛷䛒䜛䚹㻌㻲㼕㼓㻚㻟㻌㻭㻯㻌㼢㼛㼘㼠㼍㼓㼑㻌㼣㼍㼢㼑㼒㼛㼞㼙㻌㼛㼒㻌㻴㼀㻿㻌㼏㼛㼕㼘㻌㻔㼍㻕㼣㼕㼠㼔㻌㻹㻲㻰㻌㻔㼎㻕㼣㼕㼠㼔㼛㼡㼠㻌㻹㻲㻰㻌ᐇ㦂᪉ἲ䛸䛧䛶䚸㏻ᖖ䛾ヨస㉸㟁ᑟ䝁䜲䝹䛸ヨస㉸㟁ᑟ䝁䜲䝹䛻☢ሙ㌿ྥᯈ䜢⿦╔䛧䛯㝿䛾஺ὶἼᙧ䜢ᾮయ❅⣲ ᗘୗ䠄㻣㻣㻷䠅䛷 ᐃ䛧䛯䚹 ᐃᅇ㊰䛿஺ὶ㟁※䛻ᑐ䛧䛶ヨస㉸㟁ᑟ䝁䜲䝹䚸䝅䝱䞁䝖᢬ᢠ䛚䜘䜃㟁ὶㄪᩚ⏝䛾㈇Ⲵ䜢┤ิ᥋⥆䛧䛯䚹ၟ⏝㟁※䛾 㻝㻜㻜㼂㻘㻢㻜㻴㼦 䜢౑⏝䛧䚸䝇䝷䜲䝗䝺䜼䝳䝺䞊䝍䞊䛷ኚᅽ䛧䛶㟁ᅽ್䜢ㄪᩚ䛧䛯䜒䛾䜢஺ὶ㟁※䛸䛧౑⏝䛧䛯䚹 ᐃヨ㦂䛾㝿䛻䛿ヨస㉸㟁ᑟ䝁䜲䝹䛻㏻㟁䛥䜜䜛௵ព䛾㟁ὶ್䛻䛚䛔䛶㟁ὶᐇຠ್䛜 㻠㻡㻭 䛻฿㐩䛩䜛䜎䛷䛾㉸㟁ᑟ䝁䜲䝹➃Ꮚ㛫㟁ᅽ䜢 ᐃ䛧䛯䚹㻌㻠䠊ᐇ㦂⤖ᯝཬ䜃⪃ᐹ㻌㻲㼕㼓㻚㻟䛻☢ሙ㌿ྥᯈ䛾᭷↓䛻䜘䜛䝁䜲䝹➃Ꮚ㛫㟁ᅽ䛾ẚ㍑
䜢♧䛩䚹⦪㍈䛻䝁䜲䝹➃Ꮚ㛫㟁ᅽ㼇㼂㼉䚸ᶓ㍈䛻᫬㛫㼇㼙㼟㼉䜢♧䛩䚹⤖ᯝ䛛䜙䚸㻔㼍㻕㻘㻔㼎㻕䛾㻠㻡㻭䛾㟁ὶ್䛻䛚䛡䜛䛭䜜䛮䜜䛾㟁ᅽᐇຠ್䛿☢ሙ㌿ྥᯈ䜢ᦚ㍕䛩䜛䛣䛸䛷పῶ䛥䜜䚸☢ሙ㌿ྥᯈ䜢ᦚ㍕䛧䛯ヨస㉸㟁ᑟ䝁䜲䝹䛾Ⓨ⇕㔞䛿㏻ᖖ䛾ヨసᑠᆺ㉸㟁ᑟ䝁䜲䝹䛾Ⓨ⇕㔞䜘䜚䜒ప䛔஦䛜☜ㄆ䛥䜜䛯䚹㻌䛧䛛䛧䚸㻲㼕㼓㻚㻟㻔㼎㻕䛛䜙ศ䛛䜛䜘䛖䛻䛿☢ሙ㌿ྥᯈ䜢ᦚ㍕䛧䛯ሙྜ䛻䛚䛔䛶✺㉳䛜ぢ䜙䜜䜛䚹䛭䛾䛯䜑᭱኱㟁ᅽ䛿㉸㟁ᑟ䝁䜲䝹䛾䜏䛸ẚ㍑䛧䛶኱ᖜ䛻ୖᅇ䛳䛶䛔䜛䚹䛣䛾✺㉳䛿ᦚ㍕䛧䛺䛔ሙྜ䛾㟁ᅽἼᙧ䛸ヨస㉸㟁ᑟ䝁䜲䝹䛻㏻㟁䛥䜜䜛㟁ὶἼᙧ䛻䛿ぢ䜙䜜䛺䛔䛯䜑䚸☢ሙ㌿ྥᯈ䛾ᦚ㍕䛜ཎᅉ䛸䛔䛖䛣䛸䛜䜟䛛䜛䚹䛣䛾ཎᅉ䛿ヨస㉸㟁ᑟ䝁䜲䝹࿘䜚䛾☢Ẽᅇ㊰䛜ኚ໬䛧䛯ᙳ㡪䛸᥎ 䛥䜜䜛䚹㻌㻡䠊䜎䛸䜑㻌
ᮏ◊✲䛷䛿஺ὶ㉸㟁ᑟᅇ㌿ᶵ䜢᝿ᐃ䛧䛯ヨస㉸㟁ᑟ䝁䜲䝹䛻☢ሙ㌿ྥᯈ䛾᭷↓䛻䜘䜛㉸㟁ᑟ䝁䜲䝹➃Ꮚ㛫䛾஺ὶἼᙧ䜢ᾮయ❅⣲ ᗘ䠄㻣㻣㻷䠅䛷ィ 䛧䛯䚹䛣䛾⤖ᯝ䚸☢ሙ㌿ྥᯈ䜢ᑟධ䛧䛯ሙྜ䚸Ⓨ⇕㔞䜢పῶ䛷䛝䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹㻌㻲㼕㼓㻚㻝㻌㻿㼠㼞㼡㼏㼠㼡㼞㼑㻌㼍㼚㼐㻌㼞㼛㼘㼑㻌㼛㼒㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㻲㼘㼡㼤㻌㻰㼑㼒㼘㼑㼏㼠㼛㼞㻌㻔㻹㻲㻰㻕㻌ཧ⪃ᩥ⊩㻌㻝㻚 㻷㻚㼀㼟㼡㼦㼡㼗㼕㻘㻌 㼑㼠㻌 㼍㼘㻚㻦 㻵㻱㻱㻱㻌 㼀㼞㼍㼚㼟㼍㼏㼠㼕㼛㼚㼟㻌 㼛㼚㻌 㻭㼜㼜㼘㼕㼑㼐㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼢㼕㼠㼥㻘㻌 㼂㼛㼘㻚㻌 㻞㻟㻘㻌 㻵㼟㼟㼡㼑㻌 㻟㻌 㻔㻞㻜㻝㻟㻕㻌 㻭㼞㼠㼕㼏㼘㼑㻏㻦㻠㻢㻜㻟㻟㻜㻠㻌㻞㻚 㻷㻚㼀㼟㼡㼦㼡㼗㼕㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻱㼘㼟㼑㼢㼕㼑㼞㻦㻌㻼㼔㼥㼟㼕㼏㼟㻌㻼㼞㼛㼏㼑㼐㼕㼍㻔㻞㻜㻝㻞㻕㻌㼜㼜㻘㻝㻙㻠㻲㼕㼓㻚㻞㻌㻼㼔㼛㼠㼛㼓㼞㼍㼜㼔㻌㼛㼒㻌㼜㼞㼛㼠㼛㼠㼥㼜㼑㻌㻴㼀㻿㻌㼏㼛㼕㼘㻌㼣㼕㼠㻌㻹㻲㻰㻦㻔㼍㻕㻌㼟㼔㼍㼜㼑㻌㼛㼒㻌㻴㼀㻿㻌㼣㼕㼚㼐㼕㼚㼓㻌㻔㼎㻕㻌㻹㻲㻰㻌̿̿

第92回

2015年度秋季低温工学・超電導学会