3A-a01

HTS コイル安定性䃅㻟㻜㻜㻌㼙㼙 ⣭䜲䝑䝖䝸䜴䝮⣔ྵᾐ䝁䜲䝹䛾⇕ᭀ㉮≉ᛶホ౯㻌㼀㼔㼑㼞㼙㼍㼘㻌㼞㼡㼚㼍㼣㼍㼥㻌㼛㼒㻌I㻟㻜㻜㻌㼙㼙㻙㼏㼘㼍㼟㼟㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌㼅㻮㻯㻻㻌㼏㼛㼕㼘㻌

Electric field (V/cm)㻌ᐑ㷂㻌 ᐶྐ䠈ᒾ஭㻌 ㈆᠇䠈ᡞᆏ㻌 Ὀ㐀䠈⏣㷂㻌 ㈼ྖ䠈ⰼ஭㻌 ဴ䠈ᾆ⏣㻌 ᫀ㌟䠈஭ᒸ㻌 ⱱ䠈▼஭㻌 ♸௓䠄ᮾⰪ䠅㻌䠩䠥䠵䠝䠶䠝䠧䠥㻌 䠤䡅䡎䡋䡏䡄䡅䠈㻌 㻵㼃㻭㻵㻌㻿㼍㼐㼍㼚㼛㼞㼕䠈㻌 㼀㻻㻿㻭㻷㻭㻌㼀㼍㼕㼦㼛䠈㻌 㼀㻭㻿㻭㻷㻵㻌㻷㼑㼚㼖㼕䠈㻌 㻴㻭㻺㻭㻵㻌㻿㼍㼠㼛㼟㼔㼕䠈㻌 㻌㼁㻾㻭㼀㻭㻌㻹㼍㼟㼍㼙㼕䠈㻌 㻵㻻㻷㻭㻌㻿㼔㼕㼓㼑㼞㼡䠈㻌 㻵㻿㻴㻵㻵㻌㼅㼡㼟㼡㼗㼑㻌㻔㼀㻻㻿㻴㻵㻮㻭㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼔㼕㼞㼛㼟㼔㼕㻝㻣㻚㼙㼕㼥㼍㼦㼍㼗㼕㻬㼠㼛㼟㼔㼕㼎㼍㻚㼏㼛㻚㼖㼜㻌㻌㼀㼍㼎㼘㼑㻌㻝㻌㻿㼜㼑㼏㼕㼒㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㼅㻮㻯㻻㻌㼠㼍㼜㼑㼟㻌㼍㼚㼐㻌㼏㼛㼕㼘㼟㻌㻝䠊䛿䛨䜑䛻㻌
䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ䝁䜲䝹䛿㧗䛔⇕ⓗᏳᐃᛶ䜢᭷䛧䛶䛔㻯㼛㼕㼘㻌㻺㼛㻌
㻏㼍㻌㻏㼎㻌䜛䛯䜑䠈ఏᑟ෭༷䛻䛚䛔䛶䜒㧗㈇Ⲵ⋡䛷㐠㌿䛩䜛䛣䛸䛜ྍ⬟㼀㼍㼜㼑㻌㼣㼕㼐㼠㼔㻌㻔㼙㼙㻕㻌㻠㻚㻠㻌㻠㻌䛷䛒䜛䠊䛧䛛䛧䛺䛜䜙䠈Ⓨ⏕㟁ᅽ䛜䛒䜛㜈್䜢㉸䛘䛶䛧䜎䛔⇕㼀㼍㼜㼑㻌㼠㼔㼕㼏㼗㼚㼑㼟㼟㻌㻔㼙㼙㻕㻌
㻜㻚㻞㻌
㻜㻚㻝㻌
ᭀ㉮䛧䛯ሙྜ䛻䛿䝁䜲䝹䛜↝ᦆ䛩䜛༴㝤ᛶ䛜䛒䜛䠊䛭䛾䛯䜑㻿㼡㼎㼟㼠㼞㼍㼠㼑㻌㻺㼕㼃㻌㻴㼍㼟㼠㼑㼘㼘㼛㼥䕿㻾䝁䜲䝹䜢Ᏻᐃ䛻㐠㌿䛩䜛䛯䜑䛻䛿䠈ᕳ⥺ෆ㒊䛻ຎ໬䛜↓䛔䛣㻯㼛㼜㼜㼑㼞㻌㼟㼠㼍㼎㼕㼘㼕㼦㼑㼞㻌㼠㼔㼕㼏㼗㼚㼑㼟㼟㻌㻔㼙㼙㻕㻌
㻜㻚㻝㻌
㻜㻚㻜㻠㻌
䛸䛚䜘䜃⇕ᭀ㉮≉ᛶ䜢ᐃ㔞ⓗ䛻ᢕᥱ䛩䜛䛣䛸䛜㔜せ䛸䛺䜛䠊㼀㼍㼜㼑㻌㼘㼑㼚㼓㼠㼔㻌㻔㼙㻕㻌
㻝㻟㻜㻌
㻞㻜㻜㻌
⇕ᭀ㉮䛿䝁䜲䝹䝃䜲䝈䜔⥺ᮦ䛾Ᏻᐃ໬ᒙ䛾ᙳ㡪䜢ཷ䛡䜛䛯㻺㼡㼙㼎㼑㼞㻌㼛㼒㻌㼠㼡㼞㼚㼟㻌
㻝㻣㻞㻌
㻞㻡㻣㻌
䜑䠈௒ᅇ䠈㻞 ✀㢮䛾䜲䝑䝖䝸䜴䝮⣔⥺ᮦ䜢⏝䛔䛶ヨస䛧䛯䃅㻟㻜㻜㻌㻵㼚㼚㼑㼞㻌㼐㼕㼍㼙㼑㼠㼑㼞㻌㻔㼙㼙㻕㻌
㻞㻜㻜㻌
㻞㻜㻜㻌
㼙㼙 ⣭䛾䝁䜲䝹䜢⏝䛔䛶䠈ఏᑟ෭༷䛷㏻㟁ヨ㦂䜢ᐇ᪋䛧䠈ᐇ㻻㼡㼠㼑㼞㻌㼐㼕㼍㼙㼑㼠㼑㼞㻌㻔㼙㼙㻕㻌
㻞㻥㻢㻌
㻞㻥㻜㻌
㦂䛸ゎᯒ䛾୧㠃䛛䜙⇕ᭀ㉮≉ᛶ䜢ホ౯䛧䛯䛾䛷ሗ࿌䛩䜛䠊㻌㻌㻞䠊䝁䜲䝹ㅖඖ䛚䜘䜃ఏᑟ෭༷ヨ㦂㻌
ヨస䛧䛯䝁䜲䝹䛾ㅖඖ䜢 㼀㼍㼎㼘㼑㻌㻝 䛻♧䛧䠈እほ䜢 㻲㼕㼓㻚㻝 䛻♧㻏㼍㻌䛩䠊㻏㼍 䛚䜘䜃㻏㼎 䝁䜲䝹䛸䜒䛻 㻠 ᮏ䛾⥺ᮦ䜢㟁Ẽⓗ䛻᥋⥆䛧䛶䛔䜛䠊㻏㼍 䛚䜘䜃㻏㼎 䝁䜲䝹䜢ఏᑟ෭༷ヨ㦂⿦⨨䛻⤌䜏㎸䜏䠈㏻
㟁ヨ㦂䜢ᐇ᪋䛧䛯䠊䝁䜲䝹ୖ㠃䛾䜏䛻ཌ䛥 㻜㻚㻞㻡㻌 㼙㼙 䛾䜰䝹䝭ᯈ䜢ྲྀ䜚௜䛡䛶䠈䜰䝹䝭ᯈ䛾ඛ➃䜢 㻳㻹 ෭෾ᶵ䛾 㻞 ẁ෭༷䝇䝔䞊䝆䛻᥋⥆䛧䛶䝁䜲䝹䜢෭༷䛧䛯䠊䝁䜲䝹 ᗘ䛿 㻞 ẁ䝇䝔䞊㻏㼎㻌䝆䛻ྲྀ䜚௜䛡䛯䝠䞊䝍䛻䜘䜚ไᚚ䛧䠈タᐃ ᗘ䛿 㻟㻜㻌 㻷 䛛䜙 㻢㻜㻌㻲㼕㼓㻚㻝㻌㻼㼔㼛㼠㼛㼓㼞㼍㼜㼔㻌㼛㼒㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌㼅㻮㻯㻻㻌㼏㼛㼕㼘㼟㻌㻷 䛾⠊ᅖ䛷ኚ䛘䛯䠊㻟㻜㻌 㻷 䛛䜙 㻢㻜㻌 㻷 䛾ྛ ᗘ䛻䛚䛡䜛㟁⏺㻙㟁ὶ≉ᛶ䛾㏻㟁⤖ᯝ䛚䜘䜃▷ᑻ⥺ᮦ䛾⮫⏺㟁ὶ≉ᛶ䛛䜙ィ㻝㻜㻙㻢⟬䛧䛯㟁⏺㻙㟁ὶ≉ᛶ䜢 㻲㼕㼓㻚㻞 ♧䛩䠊㻏㼍 䛚䜘䜃㻏㼎 䝁䜲䝹䛸䜒䛻
㻟㻜㻌㻷
㻠㻜㻌㻷
㻟㻜㻌㻷 䛛䜙 㻢㻜㻌㻷 䛾ྛ ᗘ䛻䛚䛔䛶ᐇ㦂⤖ᯝ䛸ィ⟬⤖ᯝ䛿ᐃ㔞
㻙㻣
㻡㻜㻌㻷
㻝㻜
ⓗ䛻୍⮴䛧䠈ヨస䛧䛯ྵᾐ䝁䜲䝹䛜Ⰻዲ䛺㉸㟁ᑟ≉ᛶ䜢᭷䛧㻢㻜㻌㻷㻯㼍㼘㻚㻔㻟㻜㻌㻷㻕䛶䛔䜛䛣䛸䜢☜ㄆ䛧䛯䠊㻌㻯㼍㼘㻚㻔㻠㻜㻌㻷㻕㻝㻜㻙㻤㻯㼍㼘㻚㻔㻡㻜㻌㻷㻕㻌㻯㼍㼘㻚㻔㻢㻜㻌㻷㻕㻟䠊⇕ᭀ㉮ヨ㦂㻌㻙㻥㻝㻜䝁䜲䝹 ᗘ䜢 㻠㻜㻌 㻷 䛛䜙 㻢㻜㻌 㻷 䛾⠊ᅖ䛷ኚ䛘䛶㐣㈇Ⲵ㏻㟁
㻝㻜㻞
㻝㻜㻟
㻝㻜㻝
㻝㻜㻞
㻝㻜㻟 㻝㻜㻝
Current (A)Current (A)ヨ㦂䜢ᐇ᪋䛧䠈䝁䜲䝹䛜⇕ᭀ㉮䛩䜛㝈⏺䛾㟁ὶ್䜢 ᐃ䛧䛯䠊㻌㻲㼕㼓㻚㻞㻌㻱㻙㻵㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㼅㻮㻯㻻㻌㼏㼛㼕㼘㼟㻌㼒㼞㼛㼙㻌㻟㻜㻌㻷㻌㼠㼛㻌㻢㻜㻌㻷㻌ヨ㦂᪉ἲ䛿䠈䝁䜲䝹 ᗘ䜢୍ᐃ್䛻ไᚚ䛧䛺䛜䜙㏻㟁㟁ὶ್㻌㻝㻜㼀㼔㼑㼞㼙㼍㼘㻌㼞㼡㼚㼍㼣㼍㼥㻯㼡㼞㼞㼑㼚㼠

㻞㻡㻜㻤㼂㼛㼘㼠㼍㼓㼑㻌㻔㼙㼂㻕

㻞㻢㻜

㻞㻠㻜

㻢

㻞㻟㻜
㻠

㻞㻞㻜

㻞
㻯㼛㼕㼘㻌㼢㼛㼘㼠㼍㼓㼑
㻜
㻜

㻡㻜㻜

㻝㻜㻜㻜
㻝㻡㻜㻜
㻯㼡㼞㼞㼑㼚㼠㻌㻔㻭㻕㻞㻜㻜㻜㻯㼡㼞㼞㼑㼚㼠㻌㻔㻭㻕

㻞㻝㻜
㻞㻜㻜
㻞㻡㻜㻜

㻌

㻲㼕㼓㻚㻟㻌㼂㼛㼘㼠㼍㼓㼑㻌㼍㼚㼐㻌㼏㼡㼞㼞㼑㼚㼠㻌㼢㼍㼞㼕㼍㼠㼕㼛㼚㼟㻌㼛㼒㻌㼅㻮㻯㻻㻌㼏㼛㼕㼘㻌㼍㼠㻌㻠㻜㻌㻷㻌― 244 ―

㻌㻡㻜㻯㼛㼕㼘㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㻔㻷㻕䜢 㻜㻚㻝㻌㻭 ้䜏䛷ୖ᪼䛥䛫䠈㟁ᅽ䛾ᛴ⃭䛺ୖ᪼䛜☜ㄆ䛥䜜䛯ሙྜ䛻㟁※䜢㐽᩿䛩䜛᪉ἲ䛸䛧䛯䠊㻌 㻏㼍 䝁䜲䝹䛾 㻠㻜㻌 㻷 䛻䛚䛡䜛⇕ᭀ㉮ヨ㦂䛾⤖ᯝ䜢 㻲㼕㼓㻚㻟 䛻♧䛩䠊㟁ὶ್䜢 㻞㻡㻢㻌㻭 䛻タᐃ䛧䛯ᚋ䠈䝁䜲䝹㟁ᅽ䛜ୖ᪼䛧⥆䛡䠈᭱⤊ⓗ䛻ᛴ⃭䛺㟁ᅽୖ᪼䛜
ほ 䛥䜜䛯䛯䜑䠈㟁ὶ䜢㐽᩿䛧䛶ヨ㦂䜢⤊஢䛧䛯䠊㻌ḟ䛻䠈▷ᑻ⥺ᮦ䛾⮫⏺㟁ὶ್䛛䜙ィ⟬䛧䛯䝁䜲䝹ෆ㒊Ⓨ⇕ศᕸ䜢⏝䛔䛶䠈㻟 ḟඖ⇕ゎᯒ䜢ᐇ᪋䛧䛯䠊ቃ⏺᮲௳䛸䛧䛶෭༷ᯈ䛾 ᗘ䜢୍ᐃ䛸䛧䠈௚䛾⾲㠃䛿᩿⇕᮲௳䛸䛧䛯䠊䝁䜲䝹 ᗘ 㻠㻜㻌㻷 䛻䛚䛡䜛ゎᯒ⤖ᯝ䜢 㻲㼕㼓㻚㻠 䛻♧䛩䠊㻞㻡㻡㻌㻭 ㏻㟁᫬䛻䛚䛔䛶䛿䠈䝁䜲䝹 ᗘ䛿ᐃᖖ䛷䛒䛳䛯䛜䠈㻞㻡㻤㻌 㻭 ㏻㟁᫬䛻䛚䛔䛶䝁䜲䝹 ᗘ䛜ᛴ⃭䛻ୖ᪼䛧⇕ᭀ㉮䛩䜛⤖ᯝ䛸䛺䜚䠈ᐇ㦂⤖ᯝ䛸䜋䜌୍⮴䛩䜛䛣䛸䜢☜ㄆ䛧䛯䠊䜎䛯䠈㻌 㻏㼎 䝁䜲䝹䛻䛚䛔䛶䠈䝁䜲䝹 ᗘ 㻠㻜㻌㻷 䛻䛚䛔䛶䠈㻞㻜㻠㻌㻭 ㏻㟁᫬䛻⇕ᭀ㉮䛧䛯⤖ᯝ䛻ᑐ䛧䛶䠈ゎᯒ⤖ᯝ䛜 㻞㻝㻜㻌㻭 䛷䛒䜚䠈ㄗᕪ 㻟㻑ᮍ‶䛾⢭ᗘ䛷⇕ᭀ㉮㟁ὶ䜢ண ྍ⬟䛷䛒䜛䛣䛸䜢☜ㄆ䛧䛯䠊㻌㻌㻠䠊䜎䛸䜑㻌
ᵓᡂ䛜␗䛺䜛 㻞 ✀㢮䛾䜲䝑䝖䝸䜴䝮⣔⥺ᮦ䜢⏝䛔䛶䠈䃅㻟㻜㻜㻌㼙㼙 ⣭䛾ྵᾐ䝁䜲䝹䜢ヨస䛧䠈ఏᑟ෭༷䛻䛶⇕ᭀ㉮ヨ㦂䜢ᐇ᪋䛧䛯䠊⥺ᮦ䛾Ᏻᐃ໬ᒙ䜔ᵓᡂ䛾㐪䛔䛻䜘䜙䛪䠈⇕ᭀ㉮㟁ὶ䜢ᐃ㔞ⓗ䛻ண 䛷䛝䜛䛣䛸䜢♧䛧䛯䠊㻌
㻌

㻞㻡㻤㻌㻭
㻠㻡
㻞㻡㻡㻌㻭
㻠㻜
㻟㻡
㻟㻜
㻜

㻡㻜

㻝㻜㻜 㻝㻡㻜 㻞㻜㻜 㻞㻡㻜 㻟㻜㻜 㻟㻡㻜 㻠㻜㻜㼀㼕㼙㼑㻌㻔㼟㻕

㻌㻲㼕㼓㻚㻠㻌㻯㼍㼘㼏㼡㼘㼍㼠㼑㼐㻌㼠㼕㼙㼑㻌㼢㼍㼞㼕㼍㼠㼕㼛㼚㼟㻌㼛㼒㻌㼏㼛㼕㼘㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌
第83回

2010年度秋季低温工学・超電導学会

3A-a02

HTS コイル安定性䠵䠞䠟䠫䝁䜲䝹䛻䛚䛡䜛ຎ໬㒊఩䛻㉳ᅉ䛩䜛ᖖఏᑟఏ᧛≉ᛶ㻌㻺㼛㼞㼙㼍㼘㻌㼦㼛㼚㼑㻌㼜㼞㼛㼜㼍㼓㼍㼠㼕㼛㼚㻌㼏㼍㼡㼟㼑㼐㻌㼎㼥㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼐㼑㼓㼞㼍㼐㼍㼠㼕㼛㼚㻌㼒㼛㼞㻌㼅㻮㻯㻻㻌㼏㼛㼕㼘㼟㻌

Voltage(V)Temperature(K)㻌ዟᒣ⤮㔛ຍ㻘㻌 ᰗ⃝ྜྷ⣖㻘㻌 ୰㎸⚽ᶞ䠄༓ⴥ኱Ꮫ䠅㻧㻌 㧗ᶫ㞞ே㻘㻌 ๓⏣⚽᫂䠄⌮◊䠅㻌 㻌㻻㻷㼁㼅㻭㻹㻭㻌㻱㼞㼕㼗㼍䠈㼅㻭㻺㻭㻳㻵㻿㻭㼃㻭㻌㼅㼛㼟㼔㼕㼚㼛㼞㼕䠈㻺㻭㻷㻭㻳㻻㻹㻱㻌㻴㼕㼐㼑㼗㼕㻔㻯㼔㼕㼎㼍㻌㼁㼚㼕㼢㻚㻕㻧㻌㼀㻭㻷㻭㻴㻭㻿㻴㻵㻌㻹㼍㼟㼍㼠㼛䠈㻹㻭㻱㻰㻭㻌㻴㼕㼐㼑㼍㼗㼕㻔㻾㻵㻷㻱㻺㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼙㼍㼑㼐㼍㻬㼖㼛㼠㼍㻚㼓㼟㼏㻚㼞㼕㼗㼑㼚㻚㼖㼜㻌㻌㼅㻮㻯㻻 䝁䜲䝹䛾ホ౯ヨ㦂䛻䛚䛔䛶䛿䠈䝁䜲䝹㟁ᅽ䛾 㼠㼍㼗㼑㻌 㼛㼒㼒㻝䠊䛿䛨䜑䛻㻌
䛻䜘䜛≉ᛶຎ໬䜢㑊䛡䜛䛯䜑䛻䠈䜽䜶䞁䝏᳨▱㟁ᅽ䜢ప䛟タ㼅㻮㻯㻻 ⥺ᮦ䛿㧗☢ሙ䛷㧗䛔⮫⏺㟁ὶᐦᗘ䜢ᣢ䛱㧗ᙉᗘᐃ䛩䜛䛺䛹䛾ᑐ⟇䛜ᚲせ䛷䛒䜛䚹㻌≉ᛶ䜢᭷䛩䜛䛾䛷䠈ḟୡ௦㧗 ㉸ఏᑟ䝬䜾䝛䝑䝖䜈䛾ᛂ⏝䛜㻌ᮇᚅ䛥䜜䛶䛔䜛䚹䛧䛛䛧䛺䛜䜙䠈䝁䜲䝹୰䛾⥺ᮦ䛾୍㒊䛜ఱ䜙0(a)10
䛛䛾せᅉ䛷≉ᛶຎ໬䛧䛯ሙྜ䠈䛣䛾㒊఩䛛䜙⇕ᭀ㉮䛜Ⓨ⏕䛧
(b)
V4
330K
T4
䝁䜲䝹䛻ᦆയ䜢୚䛘䜛ᜍ䜜䛜䛒䜛䚹ᡃ䚻䛿䛩䛷䛻䜶䝫䜻䝅ྵ
V3
300
T3
ᾐ䛷䝁䜲䝹⥺ᮦ䛾ຎ໬䛜⏕䛨䜛ྍ⬟ᛶ䜢ሗ࿌䛧䛯㼇㻝㼉䚹ᮏሗ䛿䠈
-1
V2
10
T2
V1
㼅㻮㻯㻻 䝁䜲䝹⥺ᮦ䛾㒊ศຎ໬䛻䜘䜛⇕ᭀ㉮䛸䠈䛭䛾⤖ᯝ⏕䛨䜛 㼠㼍㼗㼑㻌 㼛㼒㼒 㟁ᅽ䛻䛴䛔䛶䠈䝁䜲䝹ಖㆤ䛾ᇶᮏⓗ䛺⪃䛘᪉䜢ᵓ
200
78A
10 -2
⠏䛩䜛䛣䛸䜢┠ⓗ䛸䛩䜛䚹㼅㻮㻯㻻 䝁䜲䝹䛻䜘䜛ᐇ㦂䛸ᩘ್ゎᯒ䜢ే⏝䛧䛯䚹㻌
100

㻌

10 -3
467 468 469 470 471 472

465

Time(s)470475
Time(s)480㻲㼕㼓㻚㻌㻝㻌㻔㼍㻕㻌㻱㼤㼜㼑㼞㼕㼙㼑㼚㼠㼍㼘㻌 䠿㼛㼕㼘㻌㼢㼛㼘㼠㼍㼓㼑㻌㼍㼚㼐㻌㻔㼎㻕㻌㼏㼛㼕㼘㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼍㼞㼛㼡㼚㼐㻌㼠㼔㼑㻌㼠㼍㼗㼑㻙㼛㼒㼒㻌㼏㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㻣㻤㻭㻚㻌
㻌
㻌

0

10

-1

10 -2

(b) 300

V4
V3
V2
V1

Temperature (K)(a) 10
Voltage (V)㻞䠊ᐇ㦂᪉ἲ㻌㻵㻮㻭㻰㻙㻹㼓㻻 ἲ䛷〇స䛥䜜䛯 㼅㻮㻯㻻 ⥺ᮦ㻔㻿㼡㼜㼑㼞㻼㼛㼣㼑㼞 ♫〇㻌㻿㻯㻿㻠㻜㻡㻜㻕䜢⏝䛔䛶䠈㻡 ᒙᕳ䛝䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢స〇䛧䛯䚹ᕳᯟ䛿ෆᚄ 㻟㻜㻌 㼙㼙 䛾 㻲㻾㻼 ෇⟄䛷䛒䜛䚹㼅㻮㻯㻻 ⥺ᮦ䛿䠈ᖜ 㻠㻚㻝㻌㼙㼙䠈ཌ䛥 㻜㻚㻝㻌㼙㼙 䛷䠈ᒙ㛫䛿䜹䝥䝖䞁䝔䞊䝥䛷⤯⦕䛧䛯䚹౑⏝䛩䜛⥺ᮦ䛿䝁䜲䝹୧➃ 㻠㻤㻚㻡㻌 㼏㼙㻘㻌 ྛᒙ䛿 㻥㻚㻣㻌 㼏㼙 䛷䛒䜛䚹඲య㟁ᅽ䛸ྛᒙ䛾㟁ᅽ ᐃ⏝䝍䝑䝥䛸ే䛫䛶䠈 ᗘᐃ䛾Ⅽ䠈ྛᒙ䛾୰㛫㒊఩䛻ཌ䛥 㻡㻜䃛㼙 䛾 㼀 ᆺ⇕㟁ᑐ䜢䛭䜜䛮䜜ྲྀ௜䛡䛯䚹䝁䜲䝹䛿᭱ᚋ䛻䝟䝷䝣䜱䞁䛷ྵᾐ䛧䛯㼇㻝㼉䚹ᮏ䝁䜲䝹䛿 㻠 ᒙ┠䛸 㻡 ᒙ┠䛻ຎ໬㒊ศ䜢ᣢ䛴䠄㻵㼏 䛿ྛ䚻㻟㻜㻭 䛸㻠㻜㻭䠅䚹㏻㟁ヨ㦂䛿ᾮయ❅⣲୰䠄㻣㻣㻌 㻷䠅䛷ᐇ᪋䛧䠈㟁※䛾タᐃ㟁ᅽ䠄㻞㻙㻟㼂䠅䛷䝁䜲䝹䜢ಖㆤ䛧䛯䚹ຎ໬䛜䛺䛔ሙྜ䛾䝁䜲䝹⮫⏺㟁ὶ䛿⣙ 㻝㻜㻜㻭 䛷䛒䜛䚹㻌

69A

T4
T3
T2

200

㻌

㻟䠊ゎᯒ᪉ἲ㻌䝆䝳䞊䝹Ⓨ⇕䜢ྵ䜐 㻝 ḟඖ⇕ᣑᩓ᪉⛬ᘧ䛻䜘䜚䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢䝰䝕䝹໬䛧䛯䚹䝁䜲䝹୧➃㒊䜢 㻣㻣㻷 ୍ᐃ䛸௬ᐃ䛧䛯䚹⥺ᮦ㛗ᡭ᪉ྥ䛾⇕ఏᑟ䛻ຍ䛘䠈ᒙ㛫䛾⤯⦕య䜢௓䛧䛯⇕ఏᑟ䜢⪃៖䛩䜛䛣䛸䛷䝁䜲䝹䜢ᶍᨃ䛧䛯䚹ศὶ䝰䝕䝹䛻䛿㖡Ᏻᐃ໬ᮦ䛾ᖖఏᑟ᢬ᢠ䛸㉸ఏᑟᒙ䛾 㼚 ್䝰䝕䝹䛻䜘䜛୪ิᅇ㊰䜢௬ᐃ䛧䛯㼇㻞㼉䚹㼚 ್䜢ప䛟タᐃ䠄㻞䡚㻟䠅䛩䜛䛣䛸䛷ຎ໬㒊఩䛻≉ᚩⓗ䛺䠈䜖䜛䜔䛛䛺ᖖఏᑟ㌿⛣≉ᛶ䜢䝰䝕䝹໬䛧䛯䚹ᾮయ❅⣲䜈䛾⇕ఏ㐩䛿↓ど䛧䠈᩿⇕᮲௳䜢௬ᐃ䛧䛯䚹㻌㻌㻠䠊ᐇ㦂⤖ᯝ㻌ບ☢୰䛾䝁䜲䝹䛾㟁ᅽ䜢ィ 䛧䛯䛸䛣䜝䠈䛔䛪䜜䛾ሙྜ䛻䜒 㻤㻜 䛛䜙 㻝㻜㻜㻭 䛷䝁䜲䝹㟁ᅽ䛜 㼠㼍㼗㼑㻌㼛㼒㼒 䛧䠈㟁※䛜䝎䜴䞁䛧䛯䚹ྛᒙ㛫㟁ᅽ䜢᫬㛫㍈䛻ᑐ䛧䛶䝥䝻䝑䝖䛩䜛䛸䠈㻌 㼠㼍㼗㼑㻌 㼛㼒㼒 䛻⮳䜛᣺䜛⯙䛔䛻䛿ḟ䛾䠎䛴䛾䝟䝍䞊䞁䛜ぢ䜙䜜䛯䚹㻌䠄䠍䠅⮫⏺㟁ὶ䜘䜚ప䛔㟁ὶ್䛷 㼠㼍㼗㼑㻌 㼛㼒㼒 䛩䜛ሙྜ䠖㻲㼕㼓㻚㻌 㻝 䛻䝁䜲䝹㟁ᅽ䛸䝁䜲䝹 ᗘ䜢♧䛩䚹ຎ໬䝍䞊䞁 㼂㻠 䛿ᖖఏᑟ㟁ᅽ䛻䜘䜚Ⓨ⇕䛩䜛䛜䠈䛣䜜䛜㞄᥋䛩䜛ᒙ 㼂㻟 䛻䜽䜶䞁䝏䜢㉳䛣䛩䠄㼠㻌㻩㻌㻠㻢㻥㻌㼟䠈㻣㻤㻌㻭䠅䚹䛥䜙䛻䠈䛣䜜䛜 㼂㻞 䛻ఏ᧛䛩䜛䛸䛸䜒䛻䠈㼂㻠 䛻䜽䜶䞁䝏䝞䝑䜽䛧䛶䛔䜛䚹㼠㼍㼗㼑㻌㼛㼒㼒 ᚋ䠈㻞㻚㻡㻌㼟 䛷㟁※䛜㐽᩿䛥䜜䜛䠄㼠㻌㻩㻌㻠㻣㻝㻚㻡㻌㼟䠅䛜䠈䝁䜲䝹 ᗘ䛿 㻟㻟㻜㻌㻷 䜎䛷ୖ᪼䛩䜛䚹 ᗘ䛸㟁ᅽ䛛䜙ィ⟬䛩䜛䛸ᖖఏᑟ㡿ᇦ䛿ᕳ䛝⥺඲య䛾 㻡㻜㻑䛷䛒䜚䠈ᖖఏᑟఏ᧛䛿ẚ㍑ⓗ㝈ᐃⓗ䛷䛒䜛䚹㻌䠄䠎䠅⮫⏺㟁ὶ䛻㏆䛔㟁ὶ್䠄䡚㻝㻜㻜㻭䠅䛷 㼠㼍㼗㼑㻌 㼛㼒㼒 䛧䛯ሙྜ䠖䛣䛾ሙྜ䜒䠈㼠㼍㼗㼑㻌 㼛㼒㼒 䛿 㼂㻟䊻㼂㻞䊻㼂㻠 䛾䝥䝻䝉䝇䜢䛯䛹䜛䚹䝁䜲䝹⮫⏺㟁ὶ䛻㏆䛔䛾䛷䠈ᖖఏᑟ㟁ᅽ䠄᢬ᢠ䠅䛾ቑຍ⋡䛿 㻲㼕㼓㻚㻌 㻝䜘䜚᪩䛟䠈㟁※䛿 㼠㼍㼗㼑㻌 㼛㼒㼒 ᚋ 㻝 ⛊䛷䝎䜴䞁䛩䜛䚹䛣䛾⤖ᯝ䠈䝁䜲䝹 ᗘୖ᪼䛿 㻝㻥㻡㻌 㻷 䛸ᑠ䛥䛔䚹䝁䜲䝹 ᗘ䛸㟁ᅽ䛻ᇶ䛵䛔䛯ィ⟬䛻䜘䜜䜀䠈ྛᒙ䛿䜋䜌䝣䝹䝜䞊䝬䝹䛻䛺䛳䛶䛔䜛䚹㻌ୖグ䛾䜘䛖䛺 㼠㼍㼗㼑㻌㼛㼒㼒 䛾ᐇ㦂䜢⧞䜚㏉䛩㛫䛻䠈䝁䜲䝹⮫⏺㟁ὶ≉ᛶ䜔䡊್䛜ᚎ䚻䛻ຎ໬䛧䛯䚹㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛻䠈㼠㼍㼗㼑㻌 㼛㼒㼒䛿䠈㻝㻙㻞 ⛊䛾⇕䝟䝹䝇䜢⏕䛨䠈䛣䜜䛜▐㛫ⓗ䛺 ᗘศᕸ䛸⇕ᛂຊ䜢⏕䜐䛾䛷䠈䝁䜲䝹≉ᛶ䛜ຎ໬䛩䜛䜒䛾䛸᥎ 䛥䜜䜛䚹10 -3
413 414 415 416 417 418
Time (s)

100
410

415
420
Time (s)425㻲㼕㼓㻚㻌 㻞㻌 㻔㼍㻕㻌 㻿㼕㼙㼡㼘㼍㼠㼑㼐㻌 㼏㼛㼕㼘㻌 㼢㼛㼘㼠㼍㼓㼑㻌 㼍㼚㼐㻌 㻔㼎㻕㻌 㼏㼛㼕㼘㻌 㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼍㼞㼛㼡㼚㼐㻌㼠㼔㼑㻌㼠㼍㼗㼑㻙㼛㼒㼒㻌㼏㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㻢㻥㻭㻚㻌㻌㻡䠊ゎᯒ䛸䛾ẚ㍑㻌
ゎᯒ䛻䜘䜛䝁䜲䝹㟁ᅽ䛸䝁䜲䝹 ᗘ䜢 㻲㼕㼓㻚㻞㻌 㻔㼍㻕㻌 㻔㼎㻕䛻♧䛩䚹ゎᯒ䛷䛿䠈㟁ᅽ䛾 㼠㼍㼗㼑㻌㼛㼒㼒 䛿 㻢㻥㻌㻭 䛷Ⓨ⏕䛩䜛䛜䚸䛣䜜䛿 㻲㼕㼓㻚㻌㻝䠄㻣㻤㻌㻭䠅䛻ẚ䜉䛶 㻝㻜㻌㻭 ㏆䛟ప䛔䚹䜎䛯䠈䛭䛾᫬Ⅼ䛷䛾 㼂㻠 䛻䛚䛡䜛ᖖఏᑟ㟁ᅽ䜒ᐇ㦂䛾ሙྜ䛸ẚ䜉 㻝 ᱆ప䛔䚹ᐇ㦂䛷䛿Ⓨ⇕ຎ໬㒊఩䜔䝁䜲䝹እ࿘㒊䛜䝟䝷䝣䜱䞁䜢௓䛧䛶ᾮయ❅⣲䛷෭༷䛥䜜䛶䛔䜛䛾䛻ᑐ䛧䛶䠈ゎᯒ䛷䛿᩿⇕᮲௳䜢௬ᐃ䛧䛯䛯䜑䛷䛒䜛䚹㟁ᅽ 㼠㼍㼗㼑㻌 㼛㼒㼒 䛿ᐇ㦂䛸ྠ䛨᣺䜛⯙䛔䜢♧䛧䛶䛔䜛䚹ᐇ㝿䚸ྛᒙ䛾 ᗘศᕸ䛾᫬㛫ኚື䛛䜙䠈㼂㻠 䛾ຍ⇕䛷 㼂㻟 䛜䜽䜶䞁䝏䛧䠈㼂㻠 䛜䜽䜶䞁䝏䝞䝑䜽䛩䜛䝥䝻䝉䝇䜢ゎᯒⓗ䛻ᐇド䛷䛝䛯䚹䛣䜜䛻䛴䛔䛶䛿䠈㼚 ್䛜኱䛝䛟䠄䡚㻟㻜䠅ᛴᓧ䛺ᖖఏᑟ㌿⛣≉ᛶ䜢ᣢ䛴೺඲㒊఩䛾䜋䛖䛜 㼠㼍㼗㼑㻌㼛㼒㼒 䛧䜔䛩䛔䛛䜙䛷䛒䜛䛸᥎ᐹ䛥䜜䜛䚹㻌
㻌㻢䠊䜎䛸䜑㻌㻌 㼅㻮㻯㻻䝁䜲䝹䛷䛿ຎ໬㒊఩䛾ᖖఏᑟⓎ⇕䛻䜘䜚䠈㞄᥋䛩䜛೺඲ᒙ䛜䜽䜶䞁䝏䛧䛶㟁ᅽ䛾㼠㼍㼗㼑㻌 㼛㼒㼒䛜⏕䛨䠈ᐊ 䝺䝧䝹䜈䛾▐㛫ⓗ䛺 ᗘୖ᪼䛜㉳䛝䜛䚹䛣䛾✀䛾㼠㼍㼗㼑㻌 㼛㼒㼒䛻䜘䜚㻘㻌 䝁䜲䝹䛾≉ᛶ䛜ຎ໬䛩䜛䛣䛸䛜䛒䜛䛾䛷ὀព䛩䜛ᚲせ䛜䛒䜛䚹㻌㻌ᮏ◊✲䛿䠄⊂䠅⛉Ꮫᢏ⾡᣺⯆ᶵᵓ䛾⏘Ꮫ䜲䝜䝧䞊䝅䝵䞁ຍ㏿஦ᴗ䞉ᡓ␎ⓗ䜲䝜䝧䞊䝅䝵䞁๰ฟ᥎㐍䛻䜘䜛ᡂᯝ䛷䛒䜛䚹㻌㻌ཧ⪃ᩥ⊩㻝㻚 㼀㻚㻌㼀㼍㼗㼑㼙㼍㼠㼟㼡䠈㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯䠈㻠㻣㻜㻌㻔㻞㻜㻝㻜㻕㻌㼜㼜㻚㻢㻣㻠䇵㻢㻣㻣㻌㻞㻚 㻭㻚㻌㻵㼟㼔㼕㼥㼍㼙㼍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㻝㻡㻌㻔㻞㻜㻜㻡㻕㻌㼜㼜㻚㻝㻢㻡㻥㻙㻝㻢㻢㻞㻌― 245 ―

第83回

2010年度秋季低温工学・超電導学会

3A-a03

HTS コイル安定性䜶䝫䜻䝅ྵᾐ䛻䜘䜛 㼅㻮㻯㻻 䝎䝤䝹䝟䞁䜿䞊䜻䝁䜲䝹䛾≉ᛶຎ໬㻌㻰㼑㼓㼞㼍㼐㼍㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㼜㼑㼞㼒㼛㼞㼙㼍㼚㼏㼑㻌㼛㼒㻌㼍㻌㼅㻮㻯㻻㻙㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼐㼛㼡㼎㼘㼑㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㻌㼐㼡㼑㻌㼠㼛㻌㼑㼜㼛㼤㼥㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼕㼛㼚㻌➉ᯇ㻌 ༟ஓ䠈⬌㻌 ⍞㛇䠈㧗ᑿ㻌 ᬛ᫂䠄ୖᬛ኱Ꮫ䠅䠗ᰗ⃝㻌 ྜྷ⣖䠈ዟᒣ㻌 ⤮㔛ຍ䠈୰㎸㻌 ⚽ᶞ䠄༓ⴥ኱Ꮫ䠅㻌ᮌྜྷ㻌 ྖ䠄1,06䠅䠗㧗ᶫ㻌 㞞ே䠈๓⏣㻌 ⚽᫂㻔⌮◊㻕㻌㼀㻭㻷㻱㻹㻭㼀㻿㼁㻌㼀㼍㼗㼡㼥㼍䠈㻴㼁㻌㻾㼡㼕㼤㼕㼚䠈㼀㻭㻷㻭㻻㻌㼀㼛㼙㼛㼍㼗㼕㻔㻿㼛㼜㼔㼕㼍㻌㼁㼚㼕㼢㻚㻕㻌 㻌㼅㻭㻺㻭㻳㻵㻿㻭㼃㻭㻌㼅㼛㼟㼔㼕㼚㼛㼞㼕䠈㻻㻷㼁㼅㻭㻹㻭㻌㻱㼞㼕㼗㼍䠈㻺㻭㻷㻭㻳㻻㻹㻱㻌㻴㼕㼐㼑㼗㼕㻔㻯㼔㼕㼎㼍㻌㼁㼚㼕㼢㻚㻕㻌㻷㻵㼅㻻㻿㻴㻵㻌㼀㼟㼡㼗㼍㼟㼍㻔㻺㻵㻹㻿㻕㻧㻌㼀㻭㻷㻭㻴㻭㻿㻴㻵㻌㻹㼍㼟㼍㼠㼛䠈㻹㻭㻱㻰㻭㻌㻴㼕㼐㼑㼍㼗㼕㻔㻾㻵㻷㻱㻺㻕㻌 㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㼍㼗㼑㼙㼍㼠㼟㼡㻬㼟㼟㼎㼏㻚㼞㼕㼗㼑㼚㻚㼖㼜㻌㻌ᛂຊ㞟୰䜢ᣢ䛴ᶓ᪉ྥᘬ䛳ᙇ䜚ᛂຊ䛷䛒䜛䚹๼㛤ຊ䛸䝁䜲䝹㻝䠊䛿䛨䜑䛻㻌
ຎ໬䛾㛵ಀ䛻䛴䛔䛶䛿䠈ḟ䛾ㅮ₇䠄㻟㻭㻙㼍㻜㻠䠅䛷ㄽ䛪䜛㼇㻠㼉䚹㻌㼅㻮㻯㻻 ⥺ᮦ䛿▷ᑻ䛻䛚䛡䜛㍈ᘬ䛳ᙇ䜚ᙉᗘ䛜㧗䛟㻔㻣㻜㻜㻌㻹㻼㼍ᰂ䝫䝸䝬䞊䛷䛒䜛䝟䝷䝣䜱䞁ྵᾐ䝁䜲䝹䛾ሙྜ䠈≉ᛶ䛾ຎ໬⛬ᗘ㻕䠈⌮ㄽⓗ䛻䛿ᚑ᮶䛾㉸ఏᑟ⥺ᮦ䛸ẚ䜉䛶䛿䜛䛛䛻㧗䛔䛿ぢ䜙䜜䛺䛛䛳䛯䠄㻲㼕㼓㻚㻝 䛾䕔䠅䚹䝟䝷䝣䜱䞁䛿᥋╔ᙉᗘ䛜䜋䜌㟁ὶᐦᗘ䛷䛾☢▼タィ䛜ྍ⬟䛸䛺䜛䚹䛧䛛䛧䠈㼅㻮㻯㻻 ⥺ᮦ䛾䝊䝻䛷䛒䜛䛯䜑䠈ᒙ㛫䛜ᐜ᫆䛻ศ㞳䛧䛶ᚄ᪉ྥ䛾ᘬ䛳ᙇ䜚ᛂᙉᗘ䛿ᙉ䛔␗᪉ᛶ䜢ᣢ䛱䠈ᶓ᪉ྥ䠄㼏 ㍈᪉ྥ䠅ᘬ䛳ᙇ䜚ຊ䜢༳ຊ䛜⏕䛨䛺䛔䛛䜙䛷䛒䜛䚹䛣䛾ሙྜ䠈ᚄ᪉ྥ䛻ᅽ⦰ᛂຊ䛜⏕ຍ䛧䛯ሙྜ䠈㻝㻜㻙㻞㻜㻹㻼㼍㼇㻝㼉䜎䛯䛿㻪㻠㻜㻹㻼㼍㼇㻞㼉䛺䛹䛾㠀ᖖ䛻ప䛨䜛䛣䛸䛿䛒䜛䛜䠈㼅㻮㻯㻻 ⥺ᮦ䛿ᅽ⦰ᛂຊ䛻༑ศᙉ䛔䛾䛷䝁䛔ᛂຊ䛷 㼅㻮㻯㻻 ᒙ䛜๤㞳䛩䜛䚹㻌䜲䝹≉ᛶୖ䛾ၥ㢟䛿䛺䛔䚹䝟䝷䝣䜱䞁ྵᾐ䛿䝋䝺䝜䜲䝗䛷ᗈ䛟㼅㻮㻯㻻 ⥺ᮦ䛷ᕳ䛝⥺䛧䛯䝁䜲䝹䜢䜶䝫䜻䝅䛾ᵝ䛺๛䝫䝸䝬฼⏝䛥䜜䛶䛔䜛ᡭἲ䛷䛒䜚䠈䝁䜲䝹≉ᛶ䛾ຎ໬䜢㜵䛠䛖䛘䛷᭷䞊䛷ྵᾐ䞉◳໬䛧䛶〇స䛩䜛ሙྜ䠈䜶䝫䜻䝅䛾◳໬཰⦰䜔෭ຠ䛷䛒䜛䚹ྠᵝ䛻䛧䛶䠈㠀ྵᾐ䝁䜲䝹䛷䜒ᒙ㛫䛾᥋╔ຊ䛜䝊༷⇕ᛂຊ䛻㈇䛡䛶⥺ᮦᛶ⬟䛜ຎ໬䛩䜛ྍ⬟ᛶ䛜䛒䜛䚹ᮏሗ䝻䛺䛾䛷䠈ᒙ᪉ྥ䛻ᘬᙇᛂຊ䛜⏕䛨䛪䠈⥺ᮦ䛾ຎ໬䛜䛺䛔䜒䛷䛿䛣䛾✀䛾ຎ໬䜢⣔⤫ⓗ䛺ᐇ㦂䛻䜘䜚ᐇド䛧䠈ཎᅉ䛸ᑐ⟇䛾䛸᥎ 䛥䜜䜛䚹㻌䜢ᥦ♧䛧䛯䚹㻌
㻌
53 A
31 A
54 A
600 1 PV/cm
㻞䠊ᐇ㦂᪉ἲ㻌
Dry winding㻵㻮㻭㻰㻙㻹㼓㻻 ἲ䛷〇స䛥䜜䛯 㼅㻮㻯㻻 ⥺ᮦ㻔㻿㼡㼜㼑㼞㻼㼛㼣㼑㼞 ♫〇䠈
Epoxy
impregnated400㻿㻯㻿㻠㻜㻡㻜䠈㻣㻣㻌㻷 䛷䛾 㻵㼏㻦㻌㻥㻢㻌㻭㻕䜢⏝䛔䛶䠈䝎䝤䝹䝟䞁䜿䞊䜻䝁䜲winding䝹䜢〇స䛧䛯䚹ᕳᯟ䛿ཌ䛥 㻟㻌 㼙㼙 䛾 㻲㻾㻼 ෇⟄䛷䛒䜛䚹㼅㻮㻯㻻
Paraffin
impregnated⥺ᮦ䛿䠈ᖜ 㻠㻚㻝㻌 㼙㼙䠈ཌ䛥 㻜㻚㻝㻌 㼙㼙 䛷䠈䝍䞊䞁㛫䛿䜹䝥䝖䞁䝔䞊200
winding
45 A䝥䛷⤯⦕䛧䛯䚹䝁䜲䝹䛿ෆᚄ 㻟㻜㻌 㼙㼙䠈እᚄ 㻟㻤㻌 㼙㼙䠈㧗䛥 㻤㻚㻤㻌
8A
45 A
㼙㼙 䛷䛒䜛䚹᭱ึ䛻䠈㠀ྵᾐ䛷䝁䜲䝹䜢〇స䛧䛯䠄ᕳ䛝⥺ᙇຊ
0䡚㻜㻹㻼㼍䠅䚹䝍䞊䞁ᩘ䛿 㻡㻠 䛷䛒䜛䚹ᾮయ❅⣲୰䛷㏻㟁䛧䛶䠈㟁
0
10
20
30
40
50
60
ὶ㻙㟁ᅽ≉ᛶ䜢ホ౯䛧䠈䛭䛾ᚋ䝁䜲䝹䜢ᐊ 䜎䛷᪼ 䛥䛫䜛୍
Coil current (A)㻌㐃䛾䝃䜲䜽䝹䜢 㻡 ᅇ⧞䜚㏉䛧䛯䚹䛣䛾ᚋ䠈䝁䜲䝹䜢䜶䝫䜻䝅ᶞ⬡㻲㼕㼓㻚㻝㻌 㻯㼡㼞㼞㼑㼚㼠㻙㼢㼛㼘㼠㼍㼓㼑㻌 㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌 㼛㼒㻌 㼍㻌 㼐㼞㼥㻌 㼏㼛㼕㼘㻌 㻔䕿䠅䠈㼍㼚㻌㻔㻱㼙㼑㼞㼟㼛㼚䠃㻯㼡㼙㼕㼚㼓䠈㻿㼠㼥㼏㼍㼟㼠㻌 㻝㻞㻢㻢㻕䛷ྵᾐ䞉◳໬䛧䛯䠄㻟㻟㻤㻌 㻷䡔㼑㼜㼛㼤㼥㻌 㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌 㼏㼛㼕㼘㻌㻔䕧䠅㻌 㼍㼚㼐㻌 㼍㻌 㼜㼍㼞㼍㼒㼒㼕㼚㻌 㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌 㼏㼛㼕㼘㻌㻡㻜 ᫬㛫䠅䚹䛭䛾ᚋ䠈ྠᵝ䛾⇕䝃䜲䜽䝹䛸䝁䜲䝹ホ౯䜢 㻡 ᅇ⧞䜚㻔䕔㻕㻚㼇㻞㼉㻌
㏉䛧䛯䚹㻌䜎䛯䠈௨ୖ䛸䛿ู䛻ྠ䛨ᑍἲ䛾㠀ྵᾐ䝁䜲䝹䜢〇స䛧䠈ᰂ䝫䝸䝬䞊䛷䛒䜛䝟䝷䝣䜱䞁䛷ྵᾐ䞉◳໬䛧䛶䠈ྠᵝ䛾≉ᛶホ౯䜢⾜䛳䛯䚹㻌
㻌㻟䠊ᐇ㦂⤖ᯝ㻌㠀ྵᾐ䝁䜲䝹䛸䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛾㟁ὶ㻙㟁ᅽ≉ᛶ䜢ẚ
㍑䛧䛶 㻲㼕㼓㻚㻝 䛻♧䛩䚹㠀ྵᾐ䝁䜲䝹䛾ሙྜ䠄䕿䠅䠈㻠㻡㻭 䛛䜙ᖖఏᑟ㟁ᅽ䛜⌧䜜䠈㼚 ್䛿 㻞㻣 䛷䛒䜛䚹㻝䃛㼂㻛㼏㼙 䛻ᑐᛂ䛩䜛㟁ὶ䠄㻡㻠㻌㻭䠅䛿䠈㈇Ⲵ᭤⥺䛸▷ᑻ 㻵㼏 䛾஺Ⅼ䛻୍⮴䛩䜛䚹༶䛱䠈㠀ྵ㻌ᾐ䝁䜲䝹䛷䛿≉ᛶຎ໬䛿䛺䛔䚹୍᪉䠈䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛾㻲㼕㼓㻚㻞㻌 㻔㼍㻕㻌 㻰㼑㼘㼍㼙㼕㼚㼍㼠㼑㼐㻌 㼅㻮㻯㻻㻌 㼏㼛㼍㼠㼑㼐㻌 㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌 㼛㼚㻌 㼠㼔㼑㻌 㻢㼠㼔㻌ሙྜ䠄䕧䠅䠈ᖖఏᑟ㟁ᅽ䛿䜟䛪䛛 㻤㻭 䛛䜙⏕䛨䠈㼚 ್䛿 㻟 䛷䛒䜛䚹㼘㼍㼥㼑㼞㻚㻌㻔㼎㻕㻹㼕㼏㼞㼛㼟㼠㼞㼡㼏㼠㼡㼞㼑㻌㼛㼒㻌㼠㼔㼑㻌㼒㼞㼍㼏㼠㼡㼞㼑㼐㻌㼟㼡㼞㼒㼍㼏㼑㻌㼒㼛㼞㻌㼠㼔㼑㻌㼛㼡㼠㼑㼞㻌༶䛱䠈䜶䝫䜻䝅ྵᾐ䛻䜘䜚䠈䝁䜲䝹≉ᛶ䛿㢧ⴭ䛻ຎ໬䛩䜛䚹㻌㼜㼍㼞㼠㻌 㻔㼕㻚㼑㻚㻌 㼅㻮㻯㻻㻌 㼜㼍㼞㼠㻕㻌 㼛㼒㻌 㼠㼔㼑㻌 㼐㼑㼓㼞㼍㼐㼑㼐㻌 㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌 㼠㼍㼗㼑㼚㻌 㼎㼥㻌䝁䜲䝹䜢ᕳ䛝ᡠ䛧䛺䛜䜙䠈ྛᒙ䛾㟁ὶ㻙㟁ᅽ≉ᛶ䜢ィ 䛧䛯㻿㻱㻹㻚㼇㻞㼉㻌
⤖ᯝ䠈ຎ໬ᒙ䜢➨ 㻢 ᒙ䛸≉ᐃ䛧䛯䚹ຎ໬㒊䛾୍㒊䜢ษ䜚ฟ䛧䠈㻌㖡Ᏻᐃ໬ᮦ䛾➃㒊䜢ษ㝖䛧䛯ᡤ⥺ᮦ䛜๤㞳䛧䛯䠄㻲㼕㼓㻚㻞㻔㼍㻕䠅䚹㻡䠊䜎䛸䜑㻌
๤㞳㠃䛾 㻿㻱㻹 ീࢆ Fig.2(b)࡟♧ࡍࠋ࢚ࢿࣝࢠ࣮ศᩓᆺ X䜶䝫䜻䝅ྵᾐ 㼅㻮㻯㻻 䝁䜲䝹䛷䛿䜶䝫䜻䝅䛾๛ᛶ䛻⥺ᮦ䛾⥺ศග㸦EDS㸧࡟ࡼࡿඖ⣲ศᯒ࡟ࡼࢀࡤ㸪ྥ࠿ࡗ࡚ྑഃ
ᙉᗘ䛜㈇䛡䜛䛯䜑䛻䠈⥺ᮦ䛾୍㒊䛜ຎ໬䛧䝁䜲䝹≉ᛶ䛜㢧ⴭ࡟䝞䝑䝣䜯ᒙ䛸㉸ఏᑟᒙ㛫䛾๤㞳䛜⏕䛨䠈ྥ䛛䛳䛶ᕥഃ䛷㉸䛻ຎ໬䛩䜛䚹ຎ໬䛿䠈㠀ྵᾐ᪉ᘧ䜔ᰂ䝫䝸䝬䞊䛷䛒䜛䝟䝷䝣䜱ఏᑟᒙ䛾◚᩿䛜⏕䛨䛶䛔䜛䚹㻌䞁ྵᾐ䛾ᡭἲ䛻䜘䜚᭷ຠ䛻ᢚไ䛷䛝䜛䚹㻌㻌ᮏ◊✲䛿䠄⊂䠅⛉Ꮫᢏ⾡᣺⯆ᶵᵓ䛾⏘Ꮫ䜲䝜䝧䞊䝅䝵䞁ຍ㻠䠊᳨ウ㻌㏿஦ᴗ䞉ᡓ␎ⓗ䜲䝜䝧䞊䝅䝵䞁๰ฟ᥎㐍䛻䜘䜛ᡂᯝ䛷䛒䜛䚹㻌䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛻䛴䛔䛶䠈䜶䝫䜻䝅◳໬䠈⇕཰⦰䠈䝻䞊䝺䞁䝒ຊ䛻㉳ᅉ䛩䜛ᚄ᪉ྥᛂຊ䜢ከᒙ෇⟄䝰䝕䝹䛷ᩘ್ィཧ⪃ᩥ⊩㻌⟬䛧䛯䚹ᚄ᪉ྥ㻔༶䛱ᶓ᪉ྥ㻕✚⟬ᛂຊ䛾䝢䞊䜽್䛿㻗㻝㻞㻚㻡㻌
1.㻌 D.C. van der Laan, et al,: Supercond. Sci. Technol.20
㻹㻼㼍 䛷䛒䛳䛯䚹䛣䛾್䛿 㼅㻮㻯㻻 ⥺ᮦ䛾ᶓ᪉ྥᘬ䛳ᙇ䜚ᙉᗘ
(2007) 765.
䠄㻝㻜㻙㻞㻜㻹㻼㼍㼇㻝㼉䜎䛯䛿䠚㻠㻜㻹㻼㼍㼇㻞㼉䠅䛸ྠ䜸䞊䝎䞊䛷䛒䜛䛛䜙䠈
2. Y. Xie䠈et al.: Applied Superconductivity Conference䠈㐣๫䛺ᶓ᪉ྥᛂຊ䛷⥺ᮦ䛜ຎ໬䛧䛯ྍ⬟ᛶ䛜䛒䜛䚹㻌
Washington DC.䠈USA䠈Aug. 2䠈2010䜎䛯䠈୧⪅䛾ᕪ␗䛻┦ᙜ䛩䜛ఱ䜙䛛䛾ᛂຊ㞟୰䛜⏕䛨䛶䛔
3.㻌 T. Takematsu, et al.: Physica C䠈470 (2010) pp.674–677
䜛ྍ⬟ᛶ䜒䛒䜛䚹ḟሗ㼇㻠㼉䛷㏙䜉䜛䜘䛖䛻䠈㼅㻮㻯㻻 ⥺ᮦ䛿๼㛤
4.㻌 ᰗ⃝௚䠖2010ᖺᗘ⛅Ꮨప ᕤᏛ㉸ఏᑟᏛ఍ 3A-a04
䠄䜈䛝䛛䛔䠅ຊ䠄㼏㼘㼑㼍㼢㼍㼓㼑䠅䛻ᑐ䛧䛶㠀ᖖ䛻ᙅ䛟䠈㻨㻝㻹㻼㼍 䛾ᚤᙅ䛺ᖹᆒᛂຊ䛷ᐜ᫆䛻๤㞳䛩䜛䚹๼㛤ຊ䛾ᮏ㉁䛿 㻝㻜 ಸ௨ୖ䛾
Coil voltage (PV)㻌㻌

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2010年度秋季低温工学・超電導学会

3A-a04

HTS コイル安定性㼅㻮㻯㻻 ⥺ᮦ䛻䛚䛡䜛๼㛤䠄䜈䛝䛛䛔䠅ຊ䛻ᑐ䛩䜛㢧ⴭ䛺䛬䛔ᙅᛶ㻌㻮㼞㼕㼠㼠㼘㼑㼚㼑㼟㼟㻌㼛㼒㻌㼅㻮㻯㻻㻙㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼐㼡㼑㻌㼠㼛㻌㼟㼠㼞㼑㼟㼟㻌㼏㼛㼚㼏㼑㼚㼠㼞㼍㼠㼕㼛㼚㻌㼎㼥㻌㼏㼘㼑㼍㼢㼍㼓㼑㻌㻌ᰗ⃝㻌 ྜྷ⣖䠈㻹㻭㻌㻶㼡㼑㼔㼡㼕䠈୰㎸㻌 ⚽ᶞ䠄༓ⴥ኱䠅䠗➉ᯇ㻌 ༟ஓ䠈⚟⏣㻌 ❳ᙪ䠈㧗ᑿ㻌 ᬛ᫂䠄ୖᬛ኱䠅䠗㧗ᶫ㻌 㞞ே䠈๓⏣㻌 ⚽᫂䠄⌮◊䠅㻌㼅㻭㻺㻭㻳㻵㻿㻭㼃㻭㻌㼅㼛㼟㼔㼕㼚㼛㼞㼕䠈㻹㻭㻌㻶㼡㼑㼔㼡㼕䠈㻺㻭㻷㻭㻳㻻㻹㻱㻌㻴㼕㼐㼑㼗㼕㻌㻔㻯㼔㼕㼎㼍㻌㼁㼚㼕㼢㻚㻕㻌㻧㻌㼀㻭㻷㻱㻹㻭㼀㻿㼁㻌㼀㼍㼗㼡㼥㼍䠈㻲㼁㻷㼁㻰㻭㻌㼀㼍㼠㼟㼡㼔㼕㼗㼛䠈㼀㻭㻷㻭㻻㻌㼀㼛㼙㼛㼍㼗㼕㻌㻔㻿㼛㼜㼔㼕㼍㻌㼁㼚㼕㼢㻚㻕㻧㻌㼀㻭㻷㻭㻴㻭㻿㻴㻵㻌㻹㼍㼟㼍㼠㼛䠈㻹㻭㻱㻰㻭㻌㻴㼕㼐㼑㼍㼗㼕㻌㻔㻾㻵㻷㻱㻺㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼥㼋㼥㼍㼚㼍㼓㼕㼟㼍㼣㼍㻬㼓㼞㼍㼐㼡㼍㼠㼑㻚㼏㼔㼕㼎㼍㻙㼡㻚㼖㼜㻌㻌㻌㻝䠊䛿䛨䜑䛻㻌
Displacement
Buffer㼅㻮㻯㻻 ⥺ᮦ䛾ᘬ䛳ᙇ䜚ᙉᗘ䛿኱䛝䛺␗᪉ᛶ䜢ᣢ䛴䚹⥺ᮦ
gauge
Pneumatictank䛾㛗ᡭ᪉ྥ䛾ᘬ䛳ᙇ䜚ᙉᗘ䛿 㻣㻜㻜㻌㻹㻼㼍 ௨ୖ䛷䛒䜛䛜䠈ᶓ᪉ྥcylinderDC power䠄 㼏 ㍈ ᪉ ྥ 䠅 䛷 䛿 㻝 ᱆ ప 䛔 㻔㻝㻜㻙㻞㻜㻹㻼㼍㼇㻝㼉 䜎 䛯 䛿 㻪㻠㻜㻙㻝㻜㻜㻌
supplyN2 gas㻹㻼㼍㼇㻞㼉㻕㻌 䚹㼅㻮㻯㻻 ⥺ᮦ䛿ከᒙᵓ㐀䜢ᣢ䛴䛜䚸䝝䝇䝔䝻䜲䛸Ᏻ
Load cellᐃ໬㖡䛜 㼅㻮㻯㻻䠇䝞䝑䝣䜯䞊䛷᥋ྜ䛥䜜䛯ᵓ㐀䛸䛧䛶䝰䝕䝹໬䛷䛝䜛䚹䛣䛾✀䛾᥋ྜᵓ㐀䜢ᣢ䛴」ྜయ䛷䛿䚸᥋ྜ㠃䜢➃LN2z㒊䛛䜙ᢲ䛧㛤䛟๼㛤䠄䜈䛝䛛䛔䠈㼏㼘㼑㼍㼢㼍㼓㼑䠅ຊ䛜ຍ䜟䜛䛸䜟䛪䛛
Cleavage
TensileI䛺ຊ䛷᥋ྜ䛜๤㞳䛩䜛䛣䛸䛜▱䜙䜜䛶䛔䜛䚹ᐇ㝿䛾 㼅㻮㻯㻻 ⥺
YBCO
force
Copperᮦ䛻䛚䛡䜛๼㛤䠄䜈䛝䛛䛔䠈㼏㼘㼑㼍㼢㼍㼓㼑䠅ຊ䛻䜘䜛≉ᛶຎ໬䛾ሗcoated10.8mmjig
conductor࿌䛿䜎䛰䛺䛔䚹ᮏሗ䛷䛿 㼅㻮㻯㻻 ⥺ᮦ䛻๼㛤䠄䜈䛝䛛䛔䠈V
Copper㼏㼘㼑㼍㼢㼍㼓㼑䠅ຊ䛜ຍ䜟䜛ሙྜ䛾๤㞳ᙉᗘ䛸䛭䛾◚᩿䝥䝻䝉䝇䜢baseㄪ䜉䠈䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛾≉ᛶຎ໬㼇㻟㼉䛸䛾㛵㐃䜢ㄽ䛨䛯䚹㻌㻌AEsensor(a)Tensile force (N)㻌

AE event (a.u.)(b)㻌㻟䠊⤖ᯝ䛸⪃ᐹ㻌㻲㼕㼓㻚㻞㻔㼍㻕䛻ᘬ䛳ᙇ䜚ຊ㻙⦪᪉ྥኚ఩䛾㛵ಀ䜢♧䛩䚹㻟 ᅇ┠䛾ᤲᘬ䠄㻏㻟䠅䛷䛿 㻣㻌 㻺 䜢㉸䛘䛯䛸䛣䜝䠄Ⅼ㻔㻭㻕䠅䛛䜙ຊ㻙ኚ఩᭤⥺䛾ഴ䛝䛜ᑠ䛥䛟䛺䜛䚹䛭䜜䛸ྠᮇ䛧䛶 㻭㻱 ಙྕ䛜㢧ⴭ䛻⌧䜜ጞ䜑䜛䠄㻲㼕㼓㻚㻞㻔㼎㻕ཧ↷䠅䚹䛥䜙䛻䠈㝖Ⲵ䛧䛯ᚋ䛻 㻵㼏 䛜 㻝㻝㻟㻌㻭 䛛䜙 㻝㻜㻜㻌㻭 䜎䛷పୗ䛧䛶䛔䜛䠄㻲㼕㼓㻚㻞㻔㼏㻕ཧ↷䠅䚹㻠 ᅇ┠䛾ᤲᘬ䠄㻏㻠䠅䛷䛿Ⅼ㻔㻮㻕䛻䛚䛔䛶ຊ㻙ኚ఩᭤⥺䛜ᢡ䜜᭤䛜䜚䠈䛭䛾ᚋ䛿ᘬ䛳ᙇ䜚ຊ䛜䜋䜌୍ᐃ䛾䜎䜎ኚ఩䛜ቑຍ䛧⥆䛡䠈᭱ᚋ䛻Ⅼ㻔㻯㻕䛷◚᩿䛩䜛䚹◚᩿ᚋ䛾⥺ᮦ䛿㉸ఏᑟ≉ᛶ䜢♧䛥䛪 㻵㼏 䛿 㻜㻭 䛸䛺䜛䠄㻲㼕㼓㻚㻞㻔㼏㻕ཧ↷䠅䚹◚᩿㠃䜢 㻿㻱㻹 䛷ほ 䛧䛯䛸䛣䜝䠈㖡Ᏻᐃ໬ᮦ䛾◚᩿䛿⥺ᮦ➃㒊䛛䜙⣙ 㻜㻚㻠㻌㼙㼙 䛾㒊ศ䛛䜙ጞ䜎䛳䛶䛚䜚䠈Ᏻᐃ໬ᮦ䛾◚᩿㠃䛾ቃ⏺䛿䜑䛟䜜ୖ䛜䛳䛶䛔䛯䚹㻌௨ୖ䛾⤖ᯝ䛿ḟ䛾䜘䛖䛻ㄝ᫂䛷䛝䜛䚹䜎䛪Ⅼ㻔㻭㻕䛻䛚䛔䛶䚸⥺ᮦ➃䛾ෆ㒊䛻䛚䛔䛶 㼅㻮㻯㻻 ᒙ㻗䝞䝑䝣䜯䞊ᒙ䛾䝝䝇䝔䝻䜲䛛䜙䛾๤㞳䛜ඛ⾜䛧䛶ጞ䜎䜚䠈㒊ศⓗ䛺䠥䠿ຎ໬䛜㉳䛣䜛䚹ḟ䛻
Ⅼ㻔㻮㻕䛻䛚䛔䛶㖡Ᏻᐃ໬ᮦ䛜◚᩿䛩䜛䛣䛸䛷ᘬ䛝䛿䛜䛧⌧㇟䠄㼜㼑㼑㼘㼕㼚㼓䠅䛜ጞ䜎䜚䠈Ⅼ㻔㻯㻕䛻䛚䛔䛶᏶඲䛻๤㞳䛩䜛䚹≉ᛶ䛜ຎ໬䛩䜛Ⅼ㻔㻮㻕䛻䛚䛡䜛ᖹᆒⓗ䛺ᘬ䛳ᙇ䜚ᛂຊ䠄ᘬ䛳ᙇ䜚ຊ㻛༙⏣᥋ྜ㠃✚䠅䛿 㻤㻌㻺㻌㻛㻌㻝㻢㻌㼙㼙㻞㻌㻩㻌㻜㻚㻡㻌㻹㻼㼍 䛷䛒䜚䠈ᆒ୍䛺ຊ䜢ຍ䛘䛯ሙྜ䛾ᶓᘬ䛳ᙇ䜚ᙉᗘ㼇㻝㼉㼇㻞㼉䛾 㻝㻛㻝㻜㻜 䛷䛒䜛䚹䛩䛺䜟䛱䚸㼅㻮㻯㻻 ⥺ᮦ䛿ᴟ䜑䛶๼㛤ຊ䛻ᙅ䛟䚸㦫䛟䜋䛹䜟䛪䛛䛺๼㛤ຊ䛷᥋ྜ䛜◚ቯ䛥䜜๤㞳䛩䜛䚹㻌๓ሗ䛷䛿䚸䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛻䛚䛔䛶䛿ྛ䝍䞊䞁䛾୰ᚰ㠃௜㏆䛾ᚄ᪉ྥᘬ䛳ᙇ䜚ᛂຊ䛷䚸䝁䜲䝹≉ᛶ䛜ຎ໬䛩䜛ྍ⬟ᛶ䜢㏙䜉䛯㼇㻠㼉䚹௚䛾ㄝ᫂䛸䛧䛶䚸䜶䝫䜻䝅䝸䝑䝏䛺ྛ䝍䞊䞁䛾ୖ䠄ୗ䠅➃䛻䠈๼㛤ຊ䛜ຍ䜟䜚䝁䜲䝹≉ᛶ䛾ຎ໬䛜⏕䛨䜛ྍ⬟ᛶ䜒䛒䜛䚹䛣䜜䜢☜ㄆ䛩䜛䛯䜑䛻᭷㝈せ⣲ἲ䛻䜘䜛ᛂຊゎᯒ䛷䠈ᐃ㔞ⓗ䛺ẚ㍑᳨ウ䜢㐍䜑䛶䛔䜛䚹㻌

Soldering area
(44 mm2)

4 mm

㻲㼕㼓㻚㻌 㻝㻌 㻱㼤㼜㼑㼞㼕㼙㼑㼚㼠㼍㼘㻌 㼍㼜㼜㼍㼞㼍㼠㼡㼟㻌 㼒㼛㼞㻌 㼠㼔㼑㻌 㼏㼘㼑㼍㼢㼍㼓㼑㻌 㼠㼑㼟㼠㻌 㼒㼛㼞㻌 㼍㻌㼅㻮㻯㻻㻙㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻚㻌(c)

Critical current (A)㻞䠊ᐇ㦂᪉ἲ㻌✵ᅽ䝅䝸䞁䝎䜢⏝䛔䛯ᘬ䛳ᙇ䜚ヨ㦂⿦⨨䛾ᴫ␎ᅗ䜢 㻲㼕㼓㻚㻝䛻♧ 䛩䚹ᖜ 㻠㻚㻝㻌 㼙㼙 䛾 㼅㻮㻯㻻 ⥺ᮦ䠄㻿㼡㼜㼑㼞㻼㼛㼣㼑㼞 ♫〇䠈㻿㻯㻿㻠㻜㻡㻜䠈㻣㻣㻌 㻷 䛷䛾 㻵㼏㻦㻌 㻝㻝㻟㻌 㻭䠅䜢㖡ᇶᯈ䛸ᘬ䛳ᙇ䜚෬ල䛷ᣳ䜏㎸䜏䠈䛭䜜䜙䜢 㻿㼚㻙㻟㻚㻤㼣㼠㻑㻯㼡㻙㻝㻚㻜㼣㼠㻑㻭㼓 ༙⏣䠄⼥Ⅼ 㻞㻝㻣䉝䠅䛷᥋ྜ䛧䛯䚹༙⏣䛾᥋ྜ㠃✚䛿 㻠㽢㻠㻌㼙㼙㻞 䛷䛒䜛㻔㼅㻮㻯㻻 ᒙ䛜ୖ㠃㻕䚹ᘬ䛳ᙇ䜚෬ල䛿 㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛺ᙧ≧䛷䠈ຊⅬ䛿⥺ᮦ୰ᚰ䛛䜙Ỉᖹ᪉ྥ䛻 㻝㻜㻚㻤㻌㼙㼙 㞳䜜䛶䛔䜛䚹䛣䛾ᵓᡂ䛷ᘬ䛳ᙇ䜚ຊ䜢ຍ䛘䜛䛸⥺ᮦ➃㒊䛻๼㛤ຊ䛜ຍ䜟䜛䚹䛣䜜䛻䜘䜚᥋╔㠃䛾➃㒊䛻ᛂຊ㞟୰䛜㉳䛣䜚䚸䛣䛾㒊ศ䛛䜙๤㞳䛜㐍ᒎ䛩䜛䚹ᘬ䛳ᙇ䜚ຊ䛿䝻䞊䝗䝉䝹䜢⏝䛔䛶䠈ᘬ䛳ᙇ䜚⏝䛾Წ䛾⦪᪉ྥኚ఩䛿ኚ఩ィ䜢⏝䛔䛶ィ 䛧䛯䚹䜎䛯䠈⥺ᮦ䜢タ⨨䛩䜛 㻲㻾㻼〇䛾ᅵྎ䛻䛿 㻭㻱 䝉䞁䝃䜢ᅽ╔䛧䠈◚᩿䛾㐣⛬䛷Ⓨ⏕䛩䜛㡢㡪Ἴ䜢ィ 䛧䛯䚹ヨ㦂䛿ᾮయ❅⣲୰䛷⾜䛔䠈㻔㻝㻕ᘬ䛳ᙇ䜚ຊ༳ຍ䊻㻔㻞㻕㝖Ⲵ䊻㻔㻟㻕㻵㼏 ᐃ䛾ᡭ㡰䜢⥺ᮦ䛾◚᩿䛜㉳䛣䜛䜎䛷⧞
䜚㏉䛧䛯䚹䜎䛯䠈⥺ᮦ䛾◚᩿㠃䛿 㻿㻱㻹㻛㻱㻰㻿 䛻䜘䜚ほᐹ䞉ඖ⣲ศᯒ䛧䛯䚹㻌

10
(A)
8
#3
6
#2
4 #1
2
0
0
0.1

(B)

peeling

(C)

#4

0.2

0.3

0.4

0.5

0.6 5.4

5.5

0.2

0.3

0.4

0.5

0.6 5.4

5.5

0.5

0.6 5.4

#4
5.5

#1
#2
#3
#4
0
150

0.1

113A

#1
100
50
0
0

#2

100A

#3

113A (initial value)
0.1

0.2
0.3
0.4
Axial displacement (mm)㻲㼕㼓㻚㻌㻞㻌㻔㼍㻕㻌㼀㼑㼚㼟㼕㼘㼑㻌㼒㼛㼞㼏㼑㻌㼢㼟㻚㻌㼢㼑㼞㼠㼕㼏㼍㼘㻌㼐㼕㼟㼜㼘㼍㼏㼑㼙㼑㼚㼠㻚㻌㻔㼎㻕㻌㻭㻱㻌㼑㼢㼑㼚㼠㻌㼟㼕㼓㼚㼍㼘㻌 㼢㼟㻚㻌 㼢㼑㼞㼠㼕㼏㼍㼘㻌 㼐㼕㼟㼜㼘㼍㼏㼑㼙㼑㼚㼠㻚㻌 㻔㼏㻕㻌 㻯㼞㼕㼠㼕㼏㼍㼘㻌 㼏㼡㼞㼞㼑㼚㼠㻌 㼢㼟㻚㻌㼢㼑㼞㼠㼕㼏㼍㼘㻌㼐㼕㼟㼜㼘㼍㼏㼑㼙㼑㼚㼠㻚㻌㻌㻠䠊䜎䛸䜑㻌㻌 㼅㻮㻯㻻⥺ᮦ䛿๼㛤䠄䜈䛝䛛䛔䠈㼏㼘㼑㼍㼢㼍㼓㼑䠅ຊ䛻ᑐ䛧䛶㢧ⴭ䛺䛬䛔ᙅᛶ䜢♧䛩䚹⥺ᮦ䛜◚᩿䛩䜛ᘬ䛳ᙇ䜚ຊ䛿䠈ᆒ୍䛺ᶓᘬ䛳ᙇ䜚䛾ሙྜ䛸ẚ䜉㻞᱆ᑠ䛥䛔䚹䛣䛾䛬䛔ᙅᛶ䛜䜶䝫䜻䝅ྵᾐ䝁䜲䝹䛻䛚䛡䜛≉ᛶຎ໬䜢ᘬ䛝㉳䛣䛩ཎᅉ䛾୍䛴䛷䛒䜛䛸᥎ᐹ䛥䜜䜛䚹㻌
㻌ᮏ◊✲䛿䠄⊂䠅⛉Ꮫᢏ⾡᣺⯆ᶵᵓ䛾⏘Ꮫ䜲䝜䝧䞊䝅䝵䞁ຍ㏿஦ᴗ䞉ᡓ␎ⓗ䜲䝜䝧䞊䝅䝵䞁๰ฟ᥎㐍䛻䜘䜛ᡂᯝ䛷䛒䜛䚹㻌㻌ཧ⪃ᩥ⊩
1. D.C. van der Laan, et al,: Supercond. Sci. Technol.20(2007) 765.
2. Y. Xie䠈et al.: Applied Superconductivity Conference䠈Washington DC.䠈USA䠈Aug. 2䠈2010
3. T. Takematsu䠈et al.: Physica C䠈470 (2010) pp.674–677― 247 ―

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2010年度秋季低温工学・超電導学会

3A-a05

HTS コイル安定性☢Ẽ䝉䜲䝹⏝㧗 ㉸㟁ᑟ䝁䜲䝹䛾㏻㟁≉ᛶ䛸⇕Ᏻᐃᛶ㻌

Current carrying capability and thermal stability of HTS coil for magnetic sail㻌୰ᮧ㻌 Ṋᜏ㻘㻌 ⚟஭㻌 ᫀ๎㻘㻌 ᔱᓮ㻌 ග௦㻘㻌 㞵ᐑ㻌 ᑦஅ㻌 㻔ி኱㻕䠗㻌 ⯪ᮌ㻌 ୍ᖾ㻌 㻔㻶㻭㼄㻭㻕䠗㻌 ᒣᕝ㻌 ᏹ㻌 㻔ி኱㻕㻌
NAKAMURA Taketsune, FUKUI Masanori, SHIMAZAKI Mitsuyo, AMEMIYA Naoyuki (Kyoto Univ.);
FUNAKI Ikkoh (JAXA); YAMAKAWA Hiroshi (Kyoto Univ.)
E-mail: tk_naka@kuee.kyoto-u.ac.jp
50(thermal-runway)

Simulation Results(V = 0)

Voltage V / PV

40

Simulation Results(V = 0.18)
Experimental Results

30
20
10
0
-10

0

10

20
30
40
Current I / A

50

60

Fig. 2 Voltage (V) vs. current (I) curves of YBCO
double-pancake coil at 77 K (symbols: experimental data,
curves: analysis curves obtained from analysis model)(Adiabatic condition)

YBCO
BufferNi-Cr
Heater

500μm

Cu
Ag

20μm
2μm
1μm
100nm
50μm

Ni alloy

Cu
20μm(Dirichlet condition: 77 K)
Fig. 3. Thermal analysis model.
77.4

HeaterYBCO
AgCu

0.9 PsTemperature T / K㻝㻚㻌 䛿䛨䜑䛻㻌 ⯪ᮌ䞉ᒣᕝ䛾䜾䝹䞊䝥䛿䠈㉸㟁ᑟ䝬䜾䝛䝑䝖䛾స䜛ᙉຊ䛺䝎䜲䝫䞊䝹☢ሙ䛸ኴ㝧㢼䠄䝥䝷䝈䝬ὶ䠅䛸䛾┦஫స⏝䜢฼⏝䛧䛯Ᏹᐂ᥈ᰝ⏝㧗ຠ⋡᥎㐍ᶵ䜢ᥦ᱌䛧䠈⢭ຊⓗ䛺᳨ウ䜢ᐇ᪋䛧䛶䛔䜛[1]䚹ᮏ◊✲䛷䛿䠈䝎䜲䝫䞊䝹☢ሙᐇ⌧䛾୍⎔䛸䛧䛶䠈㧗 ㉸㟁ᑟ䝁䜲䝹䛾⇕ᦆኻ≉ᛶ䛻╔┠䛧䛶᳨ウ䛧䛶䛔䜛[2]䚹ᮏሗ࿌䛷䛿䠈䜲䝑䝖䝸䜴䝮⣔㧗 ㉸㟁ᑟ䝁䜲䝹䛻䛴䛔䛶䠈䛭䛾⇕ᦆኻ≉ᛶ䛾᳨ウ⌧≧䜢ሗ࿌䛩䜛䚹㻞㻚㻌 ⇕ᦆኻホ౯⏝ᑠᙧ䝁䜲䝹䛾ヨస䛸㏻㟁≉ᛶ㻌㻌 ᮏ◊✲䛷䛿䠈SuperPower ♫〇䛾 Y ⣔㧗 ㉸㟁ᑟ䝔䞊䝥ᮦ䠄ᖜ: 3 mm䠈ཌ䜏:
0.1 mm䠈㛗䛥: 2.8 m䠈⮫⏺㟁ὶ: 73 A@77 K䠅䜢౑⏝䛧䛶䠈⇕ᦆኻホ౯⏝䛾㧗 ㉸㟁ᑟᑠᙧ䝁䜲䝹䜢ヨస䛧䛯䚹ᅗ 1 䛻䛿ヨస䛧䛯㧗 ㉸㟁ᑟ䝁䜲䝹䛾እほ෗┿䜢䠈䜎䛯ᅗ 2 䛻䛿 77 K 䛻䛚
䛡䜛㏻㟁≉ᛶ䠄䝅䞁䝪䝹䠅䜢䛭䜜䛮䜜♧䛩䚹ᅗ 2 䛻䛚䛔䛶䠈㟁ᅽ(V)䠉㟁ὶ(I)≉ᛶ䛾 ᐃ⤖ᯝ䛛䜙ホ౯䛧䛯⮫⏺㟁ὶ䛿 45 A ⛬ᗘ䛷䛒䛳䛯䚹䛥䜙䛻䠈ண䜑䝁䜲䝹ྛ㒊䛾☢⏺䝧䜽䝖䝹䜢㟁☢⏺ゎᯒ䛻䜘䛳䛶䝕䞊䝍䝧䞊䝇໬䛧䠈䛛䛴▷ᑻヨᩱ䛛䜙ᚓ䛯 V-I ≉ᛶ䠄☢⏺౫Ꮡᛶ䠅䜢㐺⏝䛧䛶ᒁᡤ㟁ᅽ䜢ィ⟬䛩䜛䛸䛸䜒䛻䠈䛭䜜䜙䜢ຍ⟬䛩䜛䛣䛸䛻䜘䛳䛶ᚓ䛯䝁䜲䝹඲య䛾㏻㟁≉ᛶ䜢Ⅼ⥺䛷♧䛩䚹ᐇ㦂⤖ᯝ䛸䛾ẚ㍑䛛䜙᫂䜙䛛䛺䜘䛖䛻䠈୧⪅䛿኱䛝䛟஋㞳䛧䛶䛔䜛䚹䛭䛣䛷䠈⥺ᮦ㛗ᡭ᪉ྥ䛾䝞䝷䝒䜻䜢᝿ᐃ䛧䠈ᶆ‽೫ᕪ
V= 0.18 䛸䛧䛶ゎᯒ䛧䛯⤖ᯝ䠄ヨ⾜ᅇᩘ 100 ᅇ䛾ᮇᚅ್䠅䜢ᐇ⥺䛷♧䛩䛜䠈ᐇ㦂⤖ᯝ䛸Ⰻ䛟୍⮴䛧䛶䛔䜛䚹⌧ᅾ䛿䠈ୖグゎᯒ᪉ἲ䛾ጇᙜᛶ䜢᳨ウ䛧䛶䛔䜛䚹䛺䛚䠈ᐇ㦂⤖ᯝ䛷䛿㟁ὶ䛜
44.7 A 䛾䛸䛝䛻⇕ᭀ㉮䜢㉳䛣䛧䛯䚹㻟㻚㻌 ⇕ᦆኻホ౯䝁䞊䝗䛾㛤Ⓨ㻌 ๓グ䛷ᚓ䜙䜜䛯≉ᛶ䜢䜒䛸䛻䠈䝁䜲䝹䛾⇕ᦆኻ≉ᛶ䜢ホ౯䛩䜛䛯䜑䠈䜎䛪䝠䞊䝍Ⓨ⇕䛻క䛖 ᗘゎᯒ䝥䝻䜾䝷䝮䛾㛤Ⓨ䜢⾜䛳䛯䚹ᅗ 3 䛻䛿䠈➨୍䝇䝔䝑䝥䛸䛧䛶
㛤Ⓨ䛧䛯䠈䠍ḟඖゎᯒ䝰䝕䝹䛾ᶍᘧᅗ䜢♧䛩䚹ᮏゎᯒ䛷䛿䠈≉䛻䜲䝑䝖䝸䜴䝮ᒙ䜔㖟ᒙ䛾ཌ䜏䛜ⷧ䛔䛯䜑䠈ྠᒙ䛾ゎᯒ䜢⢭ᐦ䛻⾜䛖䛯䜑䛻᫬㛫้䜏䜢㠀ᖖ䛻ᑠ䛥䛟䛧䛺䛡䜜䜀䛺䜙䛺䛔䠄3.0
㽢10-16 s䠅䚹ᅗ 4 䛻䛿䠈ྛᒙ䛾⇕≀ᛶ್䜢⪃៖䛧䛯ゎᯒ⤖ᯝ䛾୍౛䠄ቃ⏺᮲௳䠖ྑ➃䛿 77 K䠄 ᗘᅛᐃ᮲௳䠅䠈ᕥ➃䛿᩿⇕᮲௳䠅䜢♧䛩䚹ᐇ㦂⤖ᯝ䛸䛾ẚ㍑௚䠈ヲ⣽䛿ㅮ₇ᙜ᪥䛻ሗ࿌䛩䜛䚹ㅰ㎡㻌 ᮏ◊✲䛻䛚䛡䜛ゎᯒ䛾୍㒊䛻䛴䛔䛶䠈ி㒔኱Ꮫ⏕Ꮡᅪ◊✲ᡤ䞉ᒣᕝ◊✲ᐊ䛾ᑠᒣ཭୍Ặ䛻䛤༠ຊ㡬䛔䛯䚹䛣䛣䛻グ䛧䛶ឤㅰ⏦䛧ୖ䛢䜛䚹㻌ཧ⪃ᩥ⊩㻌[1] H. Yamakawa, I. Funaki et al.: Acta Astronautica, Vol.59,
pp.777- 784 (2006)[2] ୰ᮧṊᜏ, ⯪ᮌ୍ᖾ, ᒣᕝᏹ: ᖹᡂ 22 ᖺᗘ᫓Ꮨప ᕤᏛ࣭㉸㟁ᑟᏛ఍ࠊᖹᡂ 22 ᖺ 5 ᭶ 12㹼14 ᪥㸪ᕝᓮ⏘ᴗ᣺⯆఍㤋 (2010) 3C-a05

Buffer
Ni AlloyCu

77.3
0.09 Ps
77.2

77.1(Adiabatic condition)

77 K

77.0

0 100 200 300 400 500 600
Thickness of YBCO conductor t h / 䃛mFig. 4 An example of thermal analysis result at 77 K.

Fig. 1 Photograph of YBCO double-pancake coil.

㻌― 248 ―

第83回

2010年度秋季低温工学・超電導学会

3A-a06

Y 系線材ピンニングྛ✀ᇶᯈୖ 6P%&2 ⷧ⭷ࡢᚤ⣽ᵓ㐀࡜☢᮰ࣆࣥࢽࣥࢢ≉ᛶ
Flux pinning properties and microstructure in SmBCO film on various substrateྜྷ⏣ 㝯ࠊ୍㔝♸ுࠊ㧗ᶫ♸ஓࠊ㧗ᶫ㥴௓ࠊ㧗஭ྜྷ᫂㸦ྡྂᒇ኱Ꮫ㸧ࠊྜྷ✚ṇ᫭ࠊ࿴Ἠ㍤㑻ࠊሷཎ ⼥㸦,67(&65/㸧ࠊຍ⸨ ୔ᬕ㸦-)&& 
YOSHIDA Yutaka,,㻌 ICHINO Yusuke, TAKAHASHI Yuta, TAKAHASHI Shunsuke, TAKAI Yoshiaki (Nagoya Univ.),
YOSHIZUMI Masateru, IZUMI Teruo, SHIOHARA Yuh (ISTEC-SRL), KATO Takeharu (JFCC)
E-mail: yoshida@nuee.nagoya-u.ac.jp㸬ㅰ㎡㸬ࡣࡌࡵ࡟
㓟໬≀⣔㉸ఏᑟ⥺ᮦ䛾ᙉ☢ሙᛂ⏝䛻䛿䚸☢ሙ୰䛷䛾㧗ᮏ◊✲䛾୍㒊䛿䚸䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ≉ᛶ໬䛜㔜せ䛺ㄢ㢟䛷䛒䜛䚹ᡃ䚻䛿 REBCO ᮦᩱ䛾୰䛷 Tc

䛾୍⎔䛸䛧䛶䚸䠄⊂䠅᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䛜㧗䛟䚸㧗䛔୙ྍ㏫☢ሙ Birr 䛜ᮇᚅ䛥䜜䜛 SmBCO ⣔㉸ఏᑟ䠄䠪䠡䠠䠫䠅䛛䜙ጤク䜢ཷ䛡䛶ᐇ᪋䛩䜛䛸䛸䜒䛻䚸⛉Ꮫ◊✲㈝⿵

⥺ᮦ䛾స〇ᢏ⾡䛾ྥୖ䜢ᅗ䛳䛶䛝䛯䚹༢⤖ᬗᇶᯈୖ䛻䛚䛡ຓ㔠䠄19676005䠅䛾ຓᡂ䜢ཷ䛡䛶ᐇ᪋䛥䜜䛯䜒䛾䛷䛒䜛䚹䜛ᚤ⣽⤌⧊䛸☢᮰䝢䞁䝙䞁䜾≉ᛶ䛾㛵ಀ䜢㋃䜎䛘䛶䚸᭱㏆䛿
IBAD-MgO 䝔䞊䝥ୖ䛷䛾㧗ᛶ⬟ SmBCO ⥺ᮦ䛾స〇䜔䝘䝜䝻䝑䝗≧䛾 BaZrO3 䛚䜘䜃 BaSnO3 ேᕤ䝢䞁䛾ᑟධ䛺䛹䛾᳨ウ䜢⾜䛳䛶䛝䛯䚹
ᮏሗ࿌䛷䛿䚸SmBCO ⥺ᮦ䛚䜘䜃 1wt%Y2O3 ῧຍ SmBCO

㻣㻣㻷
㻜㻚㻢

⥺ᮦ䠄㻿㼙㼅㻮㻯㻻䠅䛾ᚤ⣽ᵓ㐀䛸☢᮰䝢䞁䝙䞁䜾≉ᛶ䜢ẚ㍑䛩

㻿㼙㼅㻮㻯㻻㻌㼍㼠㻌㻝㼀㻶㼏㻌㼇㻹㻭㻛㼏㼙㻞㼉䜛䛣䛸䜘䜚䚸☢ሙ୰㧗≉ᛶ 㻾㻱㻮㻯㻻 ⥺ᮦ䛾ᣦ㔪䜢ᚓ䜛䛣䛸䜢┠ⓗ䛸䛧䛯䚹㼍㼠㻌㻝㼀㻜㻚㻠㸬ᐇ㦂᪉ἲ㻿㼙㻮㻯㻻

SmBCO ⥺ᮦ䛚䜘䜃 SmYBCO ⥺ᮦ䛿䚸PLD ἲ䠄KrF 䜶䜻䝅㼍㼠㻌㻟㼀㻿㼙㼅㻮㻯㻻

㻜㻚㻞䝬䝺䞊䝄䠅䜢⏝䛔䛶䚸CeO2/LMO/IBAD-MgO/GZO/Hastelloy㻿㼙㻮㻯㻻ᇶᯈୖ䛻స〇䛧䛯SmBCO ᒙ䛾඲⭷ཌ䜢 400 nm䡚㻡㻜㻜㼚㼙 䛸㻙㻞㻜䛧䛯䚹స〇䛧䛯ⷧ⭷䛿䚸㏱㐣ᆺ㟁Ꮚ㢧ᚤ㙾䠄TEM䠅䛻䜘䜚᩿㠃

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㻤㻜 㻝㻜㻜 㻝㻞㻜 㻝㻠㻜 㻝㻢㻜 㻝㻤㻜 㻞㻜㻜
T 㻌㼇㼐㼑㼓㼞㼑㼑㼉ᚤ⣽ᵓ㐀䜢ほᐹ䛧䛯䚹㉸ఏᑟ≉ᛶ䛿┤ὶᅄ➃Ꮚἲ䜢⏝䛔䚸☢
ሙ(B)=0䡚7T 䛷 ᐃ䜢⾜䛺䛳䛯䚹Jc 䛾☢ሙ༳ຍゅᗘ౫Ꮡᛶ䛾ᐃ䛿䚸ᇶᯈ㠃ἲ⥺䛻ᑐ䛩䜛☢ሙ༳ຍゅᗘ ș 䜢 ș䠙-7°䡚127°
䛷ኚ໬䛥䛫䛶 ᐃ䜢⾜䛺䛳䛯䚹Fig.1 Magnetic field angular dependence of Jc in
LTG-SmBCO and SmYBCO on IBAD-MgO.

㸬⤖ᯝཬࡧ⪃ᐹᅗ䠍䛻 IBAD-MgO ཬୖ䛾 SmBCO ⥺ᮦ䛚䜘䜃 SmYBCO ⥺ᮦ䛾 Jc 䛾☢ሙ༳ຍゅᗘ౫Ꮡᛶ䜢♧䛩䚹B=1T 䛚䜘䜃 3T 䛻䛚䛡䜛 Jc 䛿 SmYBCO ⥺ᮦ䛾᪉䛜㧗䛔≉ᛶ䜢᭷䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹୍⯡ⓗ䛻ゅᗘ౫Ꮡᛶ䛿ᅗ୰䛾 SmBCO ⥺ᮦ䛾䜘䛖䛻 B//ab ᪉ྥ䛻䛚䜘䜃 B//c 䜢ቃ䛻ᑐ⛠ⓗ䛺ᣲື䜢♧䛩䚹
䛧䛛䛧䚸B=1T 䛻䛚䛡䜛 SmYBCO ⥺ᮦ䛿 B//ab 䛻䛚䛔䛶ᑐ⛠ⓗ䛺ᣲື䜢♧䛧䛶䛔䛺䛔䛣䛸䛜☜ㄆ䛥䜜䜛䚹ᅗ䠎䛻 SmYBCO ⥺ᮦ䛾᩿㠃 TEM ほᐹ⤖ᯝ䜢♧䛩䚹䝔䞊䝥㠃䛻ᑐ䛧䛶 20㼻⛬ᗘഴ䛔䛯᪉ྥ䛻ᯒฟ≀䛜 30-50nm ⛬ᗘ䛾㛫㝸䛻ከᒙᵓ㐀䜢᭷䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹䜎䛯䚸
TEM-EDX ศᯒ䛛䜙䚸Y ⤌ᡂ䛿⭷䛻ᆒ୍䛻ศᩓ䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹୍᪉ᯒฟ≀䛾ሙᡤ䛿 Sm ⤌ᡂ䛜㐣๫䛻Ꮡᅾ䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹⌧ᅾ䚸༢⤖ᬗᇶᯈ䛾 RE2O3 ᑟධ

Fig.2 TEM image of SmYBCO on IBAD-MgO.

SmBCO ⷧ⭷䛾స〇䜢⾜䛳䛶䛚䜚䚸ᙜ᪥䛿䛣䜜䜙䛾⤖ᯝ䜢ẚ

㍑䛧䛶㆟ㄽ䛩䜛ணᐃ䛷䛒䜛䚹― 249 ―

第83回

2010年度秋季低温工学・超電導学会

3A-a07

Y 系線材ピンニング

Synthesis and characterization of YBa2Cu3Ox thin films incorporating
length-controlled nanorods䝯䝺䝟䜸䝻㻌 䠈ᯇᮏ㻌 せ䠈ᮏ⏣㻌 Ὀᓫ䠈⏣୰㻌 ᩒ䠄஑ᕤ኱䠅䠈୍℩㻌 ୰㻌 䠄㟁୰◊䠅䠈ྜྷ⏣㻌 㝯䠈୍㔝㻌 ♸ு㻌 䠄ྡ㻌 ኱䠅䠈ྥ⏣㻌 ᫀᚿ㻌 䠄஑኱䠅䠈႐ከ㻌 㝯௓㻌 䠄㟼ᒸ኱䠅㻌
MELE Paolo, MATSUMOTO Kaname, HONDA Yasutaka, TANAKA Isamu (Kyushu Institute of Technology),
ICHINOSE Ataru (CRIEPI), YOSHIDA Yutaka, ICHINO Yusuke (Nagoya University), MUKAIDA Masashi (Kyushu University),
KITA Ryusuke (Shizuoka University)
E-mail: pmele@post.matsc.kyutech.ac.jp
1. Introduction
In YBa2Cu3Ox (YBCO) films incorporating one-dimensional
artificial pinning centers (APCs) such as BaZrO3 (BZO) [1], or
BaSnO3 (BSO) [2] nanorods, critical current Jc decreases
significantly when the magnetic field is inclined from the c-axisof the epitaxial YBCO films; in contrast, Jc of films added withthree-dimensional APCs such as Y2O3 nanoparticles is hardly
changed [3]. The main desired features of Jc for applications ofcoated conductors (e.g. the binding to build magnets) are
isotropy and high values in magnetic field. Y2O3 random
pinning appeared interesting especially because in-field Jc of
YBCO+Y2O3 films at low temperatures (40K~60K range) ishigher than the Jc of YBCO-BZO films and Tc is almost
undepressed by Y2O3 insertion. However, the distribution of
yttria nanoparticles and their crystalline orientation into YBCO
film is quite difficult to control On the other hand, thedistribution of BZO or BSO nanorods is easy to control, but
presents the great limitation of strong anisotropy.
We will discuss the control of nanorod length as the powerfultool to deepen understanding of flux pinning by APCs,.
2. Experimental procedures
Pure YBCO films and mixed YBCO + BSO films were grown
for reference by pulsed-laser deposition (PLD) on the SrTiO3(STO) single crystals. The PLD conditions were: E = 310
mJ/pulse, T = 860 ºC, pO2 㸻 200 mTorr. Several multilayeredfilms alternating pure YBCO and YBCO+BSO layers withdifferent thicknesses were prepared on STO substrates by PLD
using the same experimental conditions, by alternating ablationof a pure YBCO target and YBCO + 4wt% BSO mixed target.
The total thickness of all the films was kept to 300 nm. The
crystallinity and the orientations of the films and c axis length
were determined by XRD. The superconducting transition
temperature (Tc), the Jc/B characteristics (T=77 K, B//c, B=0~9
T) and the Jc/B/T angular dependences (T =77 K, B = 1 T) were
measured by PPMS. Cross-sections of films were analyzed bytransmission electron microscopy (TEM).
3. Results and discussion
Several multilayered films were prepared: YBCO layer
length/YBCO+BSO layer length ratios were 15/60, 30/60,
30/90, 30/30 and 60/60 (lengths in nm). Segmented BSO
nanorods regularly inserted inside the YBCO matrix wereobserved in the cross-sectional TEM images. Fig. 1 shows
typical aspect of a multilayered film (ratio 15/60). All the films
were grown on STO substrate epitaxially and shown 00l peaks.
Self-field Jc values were high for all the samples (2~3 MA/cm2),
while the in-field Jc was extremely high (about 0.26 MA/cm2 at
B=5 T, B//c) for two samples only.

Fig. 1. (left) TEM cross-sectional image of YBCO (1 layer
thickness = 15 nm) / YBCO+ BSO (1 layer thickness = 60nm)
multilayered film; (right) high-magnification of the same film

Fig. 2. Plots of the angular dependence of Jc (77K, 1T) for
YBCO/YBCO+BSO multilayered films. The thicknesses ofmultilayers (nm) are indicated in the figure.

These samples presented shorten ratios between YBCO layer
thickness and YBCO+BSO layer thickness: 0.25 and 0.33,
respectively. According to Jc/T dependencies (Fig. 2a) thesesamples were characterized by anisotropic pinning behaviour,with Jc (B//c) > Jc (B//ab). The samples which ratio is 1
presented an opposite behaviour with Jc (B//ab) > Jc (B//c) (Fig.
2b). The sample which ratio is 0.5 had an intermediate
behaviour (Fig 2a, b). These behaviors depend on the different
mechanism of vortex depinning from APCs [4]. The anisotropic
pinning behavior can be explained by the energy change ofstaircase vortex. In the case of nanorods, a staircase state of thevortex line comes to stabilize in energy as the direction of themagnetic field is tilted from the direction of nanorod; however,
the angular dependence of the pinning energy of nanoparticle ismore gradual than that of nanorod.
References[1]

P. Mele et al., Supercond. Sci. Technol. 20 (2007) 244[2]

P. Mele et al., Supercond. Sci. Technol. 21 (2008) 032002[3]

P . Mele et al., Supercond. Sci. Technol. 20 (2007) 616[4]

G. Blatter et al., Rev. Mod. Phys. 66 (1994) 1125

― 250 ―

第83回

2010年度秋季低温工学・超電導学会

3A-a08

Y 系線材ピンニングேᕤ䝢䞁䜢ᑟධ䛧䛯 㻼㻸㻰㻙㻳㼐㻝㻞㻟 䝁䞊䝖⥺ᮦ䛻䛚䛡䜛ప㻶㼏 ≉ᛶ㻌

㻶㼏㻌㼜㼞㼛㼜㼑㼞㼠㼥㻌㼛㼒㻌㻌㻼㻸㻰㻙㻳㼐㻝㻞㻟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼣㼕㼠㼔㻌㻭㻼㻯㻌㻌㼍㼠㻌㼘㼛㼣㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㻌㕥ᮌ㻌 ໶㻘㻌 ῐ㊰㻌 ᬛ㻘㻌 Ώ㎶㻌 ࿴㞝㻔ᮾ໭኱㔠◊㻕㻧㻌 ྜྷ✚ṇ᫭㻘㻌 ⾰ᩫ㻌 㢧㻘㻌 ࿴Ἠ㻌 ㍤㑻㻚㻌 ሷཎ㻌 ⼥㻔㻿㻾㻸㻕㻌㻿㼁㼆㼁㻷㻵㻌㼀㼍㼗㼡㼙㼕㻘㻌㻭㼃㻭㻶㻵㻌㻿㼍㼠㼛㼟㼔㼕㻘㻌㼃㻭㼀㻭㻺㻭㻮㻱㻌㻷㼍㼦㼡㼛㻔㻵㻹㻾㻘㻌㼀㼛㼔㼛㼗㼡㻌㼁㼚㼕㼢㻚㻕㻧㻌㼅㻻㻿㻴㻵㼆㼁㻹㻵㻌㻹㼍㼟㼍㼠㼑㼞㼡㻘㻌㻵㻮㻵㻌㻭㼗㼕㼞㼍㻘㻌㻵㼆㼁㻹㻵㻌㼀㼑㼞㼡㼛㻘㻌㻿㻴㻵㻻㻴㻭㻾㻭㻌㼅㼡㼔㻔㻿㻾㻸㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㼍㼗㼡㼙㼕㻙㼟㻬㼕㼙㼞㻚㼠㼛㼔㼛㼗㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝㻚㻌 䛿䛨䜑䛻㻌ᕼᅵ㢮㧗 㓟໬≀㉸ఏᑟయ䠄㻾㻱㻮㼍㻞㻯㼡㻟㻻㼥㻌 㻔㻾㻱㻝㻞㻟㻘㻌 㻾㻱㻌 䛿㼅㻌 䜢ྵ䜐ᕼᅵ㢮ඖ⣲㻕䠅䛾䝔䞊䝥⥺ᮦ䛿ᙉ☢ሙ୰䛷㧗䛔⮫⏺㟁ὶᐦᗘ≉ᛶ䜢♧䛩䛣䛸䜔䚸ᶵᲔ≉ᛶ䛻ඃ䜜䛯ᇶᯈ䜢⏝䛔䛶䛔䜛䛣䛸䛺䛹䛛䜙䚸ప ᙉ☢ሙᛂ⏝䜈䛾㐺⏝䜒ᮇᚅ䛥䜜䛶䛔䜛䚹ᮏ◊✲䛷䛿䚸ேᕤ䝢䞁䛸䛧䛶㻮㼍㼆㼞㻻㻟㻌 䝘䝜䝻䝑䝗䜢ᑟධ䛧䛯㛗ᑻ㻳㼐㻝㻞㻟㻌 䝔䞊䝥⥺ᮦ䛻䛚䛡䜛ప 䛷䛾ேᕤ䝢䞁䛸䛧䛶䛾䝘䝜䝻䝑䝗䛾ຠᯝ䛻䛴䛔䛶㆟ㄽ䛩䜛䚹㻌㻌㻞㻚㻌 ヨᩱ⥴ඖ䛚䜘䜃ᐇ㦂᪉ἲ㻌
ヨ ᩱ ⥺ ᮦ 䛾 ⥴ ඖ 䜢 㼀㼍㼎㼘㼑㻌 㻝㻌 䛻 ♧ 䛩 䚹 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䛻䜘䛳䛶స〇䛧䛯㻳㼐㻝㻞㻟㻌 䝔䞊䝥⥺ᮦ䛷䛒䜚䚸ᇶᯈ䛿㻵㻮㻭㻰㻔㻵㼛㼚㻙㻮㼑㼍㼙㻌㻭㼟㼟㼕㼟㼠㼑㼐㻌㻰㼑㼜㼛㼟㼕㼠㼕㼛㼚㻕ἲ䛻䜘䜚స〇䛥䜜䛯㻹㼓㻻㻌 䝞䝑䝣䜯ᒙ䜢ᣢ䛴㻴㼍㼟㼠㼑㼘㼘㼛㼥ᇶᯈ䛷䛒䜛䚹䜎䛯䚸᭱⾲㠃䛻䛿ಖㆤᒙ䛸䛧䛶㻝㻜㻌 P㼙䛾㻭㼓䜢⏝䛔䛯䚹䛣䛾ヨᩱ䛻ᑐ䛧䛶䚸䝣䜷䝖䝸䝋䜾䝷䝣䜱䞊ཬ䜃䜴䜵䝑䝖䜶䝑䝏䞁䜾ᢏ⾡䜢⏝䛔䛶䚸ᖜ㻌 ⣙㻝㻜㻜㻌P㼙䚸㛗䛥㻌 ⣙㻝㻌㼙㼙䛾䝤䝸䝑䝆ᙧ≧䛻ຍᕤ䛧䛯䚹㻌ᐃ䛿ᅄ➃Ꮚἲ䜢⏝䛔䛶⮫⏺㟁ὶᐦᗘ䜢㏻㟁ἲ䛻䛶 ᐃ䛧䛯䚹ヨᩱ ᗘ䛿䚸䝦䝸䜴䝮䜺䝇䝣䝻䞊䛸ヨᩱ䝩䝹䝎䞊ୖ䛾䝠䞊䝍䞊䛻䜘䜚䚸⢭ᐦ䛻䝁䞁䝖䝻䞊䝹䛧䚸⮫⏺㟁ὶỴᐃ䛾㟁⏺ᇶ
‽䛿㻝㻌P㼂㻛㼏㼙㻌 䛸䛧䛯䚹㻌㻲㼕㼓㻚㻝㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼍㼚㼓㼘㼑㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻶㼏㻌 㻌 㼕㼚㻌㼍㻌㻌 㻼㻸㻰㻙㻳㼐㻝㻞㻟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼣㼕㼠㼔㻌㻭㻼㻯㻌㼍㼠㻌㻠㻜㻚㻜㻌㻷㻚㻌

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㻟㻚㻌 ᐇ㦂⤖ᯝ䛸⪃ᐹ㻌㻌 㻲㼕㼓㻚㻝 䛻ேཱྀ䝢䞁䛸䛧䛶 㻮㼍㼆㼞㻻㻟㻔㻮㼆㻻㻕䜢ᑟධ䛧䛯 㻼㻸㻰㻙㻳㼐㻝㻞㻟䝁䞊䝖⥺ᮦ䛾 㻠㻜㻌㻷 䛻䛚䛡䜛⮫⏺㟁ὶᐦᗘ 㻶㼏 䛾☢ሙ༳ຍゅᗘ౫Ꮡᛶ䜢♧䛩䚹ప☢ሙ䛷䛿䃗㻌 㻩㻌 㻜° 㻔㻮㻛㻛㼏㻕䛷 㼏 ㍈┦㛵䝢䞁䛻㉳ᅉ䛧䛯䝢䞊䜽䛜Ꮡᅾ䛩䜛䛜䚸㧗☢ሙ䛷䛿☜ㄆ䛷䛝䛺䛛䛳䛯䚹䛣䛾᣺䜛⯙䛔䛿ᾮయ❅⣲ ᗘ➼䛾㧗 䛷䛾᣺䜛⯙䛔䛸ᐃᛶⓗ䛻୍⮴䛧䛶䛔䜛䚹䛥䜙䛻ప 䛷䛿ప☢ሙ䛾䝢䞊䜽䜒ᾘኻ䛩䜛䚹㻲㼕㼓㻚㻞 䛻 㻶㼏 䛾☢ሙ౫Ꮡᛶ䜢♧䛩䚹䝘䝜䝻䝑䝗ᑟධ䛻䜘䛳䛶䚸㻮䎹㼏 䛷 㻶㼏 䛜ῶᑡ䛧䛶䛔䜛䛜䚸㻮㻛㻛㼏 䛾ప☢ሙ䛻䛚䛔䛶 㻶㼏 䛜䜋䜌➼䛧䛟䛺䜛䚹䜎䛯䚸䝘䝜䝻䝑䝗ᑟධヨᩱ䛷䛿 㻶㼏 䛾☢ሙ౫Ꮡᛶ䛜኱䛝䛟䛺䜛ഴྥ䛜ぢ䜙䜜䛯䚹㻌㻲㼕㼓㻚㻟 䛻 䚸 㻶㼏㻌 䛾 ␗ ᪉ ᛶ 㻶㼏㼍㼎㻛㻶㼏㼏㻌 䛾 ᗘ ౫Ꮡ ᛶ 䜢 ♧ 䛩 䚹㼍㼎㻶㼏 㻛㻶㼏㼏㻌 䛿 ᗘ䛾ῶᑡ䛸ඹ䛻୍᪦ᛴ⃭䛻ῶᑡ䛧᭱ᑠ䛸䛺䛳䛯ᚋ䚸䛥䜙䛻ప 䛷䛿ቑຍ䛩䜛䚹䝘䝜䝻䝑䝗䛾ᑟධ䛻䜘䜚䚸 㻶㼏㻌 䛾␗᪉ᛶ䛜ప 䛷䜒ῶᑡ䛧䛶䛔䜛䛣䛸䛜ศ䛛䜛䚹䛣䜜䜙䛾⤖ᯝ䛛䜙䛛䜙ప 㧗☢ሙ䛷䛿䝘䝜䝻䝑䝗䛜䝤䝻䞊䝗䛻ຠ䛔䛶䛔䜛䛸⪃䛘䜛䚹㻌 ᙜ᪥䛿䛥䜙䛻ప 䛷䛾ேᕤ䝢䞁䛾ຠᯝ䛻䛴䛔䛶㆟ㄽ䛩䜛ணᐃ䛷䛒䜛䚹㻌

PLD-Gd123
PLD-Gd123 + APC

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― 251 ―

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第83回

㻌

2010年度秋季低温工学・超電導学会

3A-a09

Y 系線材ピンニング

 !"$# " BFD= ' =8 CE ?

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Jc(T)/(1 + T/Tc)2 (MA/cm2)

α

101

7

(a)

(b)

0.5 T

Jc (MA/cm2)

60 K

4

SuperPowerSCS4050

0.5 T
H II c3

H II c
1T

2

1

2T

0

40

60 K
|θ – 90°| = 6°
16°
6°
15°

H II cvirtual Jc(εH) due to random–0.7
pinning?

2T

80

120

Angle θ (deg)

160

0.01

0.1

μ0Hscal = μ0εH (T)

1T/(1+t)2
1.92(1 – t)1¸ÔÒ£¦Ì¿ÌÒÙÐÞÔÎ¢ÑÔÐ×ÏÌÙÒ×ÐÏÐÛÐÙÏÐÙÎÐÚÑÎÔÙÄßÛÐÜÂÚàÐÜÞÌÛÐÌÞ«¥½£ÍÅÓÐÝÎÌ×ÔÙÒÌÙÌ×áÝÐÝÚÑÝØÌ××ÜÌÙÏÚØÛÔÙÝ£ôĜĮĥĂ Î¡ θ ĒòČā`BĒïýa1óøÿðĐã¤¤ ĂģĮĔë «¥½ ÿ]ąý>āíĀûøä©¥½ āéîĎ{XĒ' §Ì ārõëã¤¤ þă ¦Å êČªÅ ĆþqjāċĎ Î Ă ë>ā7ĀçðÿëđêĎä
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2T/(1+t)2
2T/(1+t)2-20K

0.1

SuperPower-SCS4050 (Oct2009P)
Tc is assumed to be 90 K
0.1

ε(θ) = (cos2θ + sin2θ/γ2)1/2, γ = 5 5 T

5T0

H II ab1T

Jc ~ (εεH)

4T

1

Jc (MA/cm2)

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0.1 T

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6

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8
H II abø Ê¦¡ §ËäñíRã9:Čăã Î ĂĤězĤĩĮ ¸¸
H II ab(a)(b)
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0.5 T
6
5
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42T
H II cH II c5T3§¥¢­¥ ½ Ă?Aç`Bx&þ^āċûýa1óøä
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0
40
80
120
160
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40
80
120
160
Angle θ (deg)Angle θ (deg)
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(1 – T/Tc)2(1 + T/Tc)2 ! 2()#'%)06ĭĚħģĭĂ 6° ≤ |θ – 90°| ≤ 15° ĂăãĀĈČêā
|θ – 90°| = 20° Ă Î āüçý4<3   üĀëĎÿÿĉāã¤¤ þęĖĮĪQ}êČăöďøį'ı$& :*%)1;!"/.,!
ÍİäðĂJă ¸¸¢¿Á¶ ÿZþæč Ê¨ËãÎθ ëā10226òĀĨĭĚħģĭÿ  @mģĭĂ~āċĎðÿêČã
fp(T)/fp(0) = Hc(T) /Hc(0)¸¸¢¿Á¶ Zãu8[!Ă į}fģĭİë2
2= (1 – T/Tc) (1 + T/Tc)ģĭþæĎðÿër"òďøäøùã Jc ~ (εH)–  Ă α¥£¬(small random pinning
contribution due to linear pins)þæûýã¬¬â­¥ ½ Ă)Ă α  ¦ ċč6òçðÿêČã,āğġWeģĭĂ2ëæĎðÿĉILòďø Ê©Ëä
Jc at |θ
θ – 90°| = 20°
2.07
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第83回

2010年度秋季低温工学・超電導学会