1A-a01

HTS 線材評価䝬䝹䝏䝣䜱䝷䝯䞁䝖 㻴㼀㻿 ᶍᨃ⥺ᮦ㟁ὶศᕸ䛾㟁ὶ᣺ᖜ౫Ꮡᛶ㻌㻯㼡㼞㼞㼑㼚㼠㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻭㻯㻌㼏㼡㼞㼞㼑㼚㼠㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌㼕㼚㻌㼙㼡㼘㼠㼕㼒㼕㼘㼍㼙㼑㼚㼠㼍㼞㼥㻌㻴㼀㻿㻌㼙㼛㼐㼑㼘㻌㼠㼍㼜㼑㼟㻌㻌Ọ⏣㻌ᗈ኱䠈ᐑཎ㻌࿴▮䠈ᖹᒣ㻌ᩧ䠈ᕝ⏿㻌⛅㤿䠈ᕝ㉺㻌᫂ྐ䠈ఫྜྷ㻌ᩥኵ㻌 㻔㮵ඣᓥ኱䞉ᕤ㻕㻧㻌࿴Ἠ㍤㑻䠈ሷཎ㻌⼥㻌䠄SRL-ISTEC㸧NAGATA Kodai, MIYAHARA Kazuya, HIRAYAMA Tadashi, KAWABATA Shuma, KAWAGOE Akifumi,
SUMIYOSHI Fumio (Kagoshima University)㻧 IZUMI Teruo, SHIOHARA Yuh (SRL-ISTEC)
E-mail:k6527959@kadai.jp㻌㻝䠊䛿䛨䜑䛻㻌
஺ὶ⏝㧗 ㉸ఏᑟᶵჾ䜢ᐇ⏝໬䛩䜛䛯䜑䛻䛿䚸ᶵჾ䛾ᕳ⥺䛻౑⏝䛥䜜䜛 HTS ⥺ᮦ䜢పᦆኻ໬䛩䜛䛣䛸䛜ᚲせ䛷䛒䜚䚸䛭䛾䛯䜑䛻䝬䝹䝏䝣䜱䝷䝯䞁䝖໬䛥䜜䛯 HTS ⥺ᮦ䛾㛤Ⓨ䛜㐍䜑䜙䜜䛶䛔䜛䚹䛣䛾⥺ᮦෆ䛾㟁ὶศᕸ≉ᛶ䜢ᐃ㔞ⓗ䛻ᢕᥱ䛩䜛䛣䛸䛿㔜せ䛷䛒䜛䛜䚸䛭䛾≉ᛶホ౯ἲ䛿ᮍ䛰༑ศ䛻䛿☜❧䛥䜜䛶䛔䛺䛔䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸䝬䝹䝏䝣䜱䝷䝯䞁䝖 HTS⥺ᮦෆ䛾㟁ὶศᕸ䜢㠀᥋ゐ䛷ᐃ㔞ⓗ䛻ホ౯䛷䛝䜛 ᐃἲ䜢☜❧䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛶䛔䜛䚹ᮏ ᐃἲ䛷䛿䚸ᴟᑠ䝃䜲䝈䛾䝢䝑䜽䜰䝑䝥䝁䜲䝹⩌䜢ヨᩱ⥺ᮦ䛻┤᥋㈞䜚௜䛡䛶䚸ヨᩱ⥺ᮦ⾲㠃௜㏆䛾☢⏺ศᕸ䜢 ᐃ䛧䚸䛭䛾⤖ᯝ䛛䜙ᩘ್ィ⟬䛻䜘䜚㟁ὶศᕸ䜢ồ䜑䜛 [1]䚹௒ᅇ䛿䚸䜎䛪㟁ὶ⟬ฟ⢭ᗘྥୖ䛾䛯䜑䛻㟁ὶ⟬ฟ䝥䝻䜾䝷䝮䛾㧗㏿໬䜢⾜䛔䚸䝬䝹䝏䝣䜱䝷䝯䞁䝖
HTS ᶍᨃ⥺ᮦ䜢ヨᩱ⥺ᮦ䛸䛧䛶䚸⢭ᗘྥୖ䛾⛬ᗘ䛻䛴䛔䛶ㄪ䜉䛯䚹ḟ䛻ヨᩱ⥺ᮦ䛻ప㟁ὶ㡿ᇦ䛛䜙⮫⏺㟁ὶ௜㏆䜎䛷䛾஺ὶ㟁ὶ䜢㏻㟁䛧䛯䛸䛝䛾㟁ὶศᕸ≉ᛶ䜢 ᐃ䛷䛝䜛䜘䛖䛻 HTS 㟁ὶ䝖䝷䞁䝇䜢฼⏝䛧䛯 ᐃ䝅䝇䝔䝮䜢ᵓ⠏䛧䚸䛣䜜䜢⏝䛔䛯 ᐃ䜢⾜䛺䛳䛯䚹௨ୖ䛾⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌㻞䠊䝬䝹䝏䝣䜱䝷䝯䞁䝖 㻴㼀㻿 ⥺ᮦ䜢⏝䛔䛯 ᐃ⢭ᗘ䛾ホ౯㻌ᮏ ᐃἲ䛾 ᐃ⢭ᗘ䜢ホ౯䛩䜛䛯䜑䛻䚸䝬䝹䝏䝣䜱䝷䝯䞁䝖
HTS ⥺ᮦ䜢ᶍᨃ䛧䛯ヨ㦂ᑟయ䜢⏝䛔䛯䚹ᶍᨃ⥺ᮦ䛿䚸⥺ᮦᖜ䛜 1mm ⛬ᗘ䛾 Gd ⣔⥺ᮦ䜢 5 ᮏᖹ⾜䛻୪䜉䛯䜒䛾䛷䚸⥺ᮦ㛫䛻䛿⤯⦕䛾䛯䜑䛻⣙ 100ȝm ᚄ䛾䝔䜾䝇䜢ᤄධ䛧䛶䛔䜛䚹䛣䛾▷ᑻ┤⥺≧䛾⥺ᮦ䛻䝢䝑䜽䜰䝑䝥䝁䜲䝹⩌䜢㈞䜚௜䛡䛶䚸⥺ᮦ࿘㎶䛾☢ሙศᕸ䛾࿘᪉ྥᡂศ䜢 ᐃ䛩䜛䚹ྛ䝁䜲䝹䛿
ĳ40ȝm 䛾⤯⦕ Cu ⥺䛷⣬〇䛾䝪䝡䞁䛻ᕳ⥺䛥䜜䛶䛔䜛䚹䛭䛾᩿㠃✚䛿 4.46mm×0.33mm䚸䝁䜲䝹㛗䛿 0.25mm䚸ᒙᩘ䛿 3䚸䝍䞊䞁ᩘ䛿 17 䛷䛒䜛䚹 ᐃ⢭ᗘ䛾ホ౯䛿䚸ᶍᨃ⥺ᮦ䛻㏻㟁䛧
䛯᪤▱䛾㟁ὶ䛸䚸䝢䝑䜽䜰䝑䝥䝁䜲䝹⩌䛻䜘䜛 ᐃ☢ሙศᕸ䛛䜙⟬ฟ䛧䛯㟁ὶศᕸ䛸䜢ẚ㍑䛩䜛䛣䛸䛻䜘䛳䛶⾜䛳䛯䚹㻌Fig. 1(a), (b)䛿 1mm ᖜ䛾 Gd ⣔⥺ᮦ 5 ᮏ䛛䜙ᡂ䜛ᶍᨃ⥺ᮦ䛻ᐇ㝿䛻㏻㟁䛧䛯䛸䛝䛾 ᐃ☢ሙศᕸ䜢♧䛧䛯䜒䛾䛷䛒䜚䚸⦪㍈䛿 ᐃ㟁ᅽ䚸ᶓ㍈䛿䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾఩⨨䛷䛒䜛䚹Fig.
1(c), (d)䛿䛣䛾 ᐃ⤖ᯝ䛛䜙⟬ฟ䛧䛯㟁ὶศᕸ䛷䛒䜛䚹⦪㍈䛿㟁ὶ್䛷䚸Წ䜾䝷䝣䛿ྛ䝣䜱䝷䝯䞁䝖䛾⟬ฟ㟁ὶ್䚸䝥䝻䝑䝖Ⅼ䛿䝅䝱䞁䝖᢬ᢠ䛷 ᐃ䛧䛯㟁ὶ್䜢♧䛧䛶䛔䜛䚹ྠᅗ䛻♧䛩䜘䛖䛻 ᐃㄗᕪ䛿᭱኱䛷䜒 10%ᮍ‶䛷䛒䜚䚸㟁ὶ⟬ฟ䝥䝻䜾䝷䝮䛾ᨵⰋ䛻䜘䜚㟁ὶ⟬ฟ⢭ᗘ䜢ྥୖ䛥䛫䜛䛣䛸䛜䛷䛝䛯䚹㻟䠊䝬䝹䝏䝣䜱䝷䝯䞁䝖 㻴㼀㻿 ⥺ᮦ䛾㟁ὶ᣺ᖜ౫Ꮡᛶ㻌
Fig. 1 䛻♧䛩 ᐃ⤖ᯝ䛿䚸ヨᩱ⥺ᮦ䛾⮫⏺㟁ὶ Ic 䛾 20%⛬ᗘ䛾㟁ὶ್䛻ᑐ䛩䜛 ᐃ⤖ᯝ䛷䛒䜛䛜䚸䝬䝹䝏䝣䜱䝷䝯䞁䝖
HTS ⥺ᮦ䛾ྛ䝣䜱䝷䝯䞁䝖䛾 Ic 䛜␗䛺䜛ሙྜ䛻䛚䛔䛶䚸㏻㟁㟁ὶ䛾኱䛝䛥䛻䜘䛳䛶㟁ὶศᕸ≉ᛶ䛜䛹䛾䜘䛖䛻ኚ໬䛩䜛䛛䜢ᢕᥱ䛩䜛ᚲせ䛜䛒䜛䚹䛭䛣䛷ヨᩱ⥺ᮦ䛻ప㟁ὶ㡿ᇦ䛛䜙⮫⏺
㟁ὶ௜㏆䜎䛷䛾஺ὶ㟁ὶ䜢㏻㟁䛧䛯䛸䛝䛾㟁ὶศᕸ≉ᛶ䜢ᐃ䛷䛝䜛䜘䛖䛻 HTS 㟁ὶ䝖䝷䞁䝇䜢฼⏝䛧䛯 ᐃ䝅䝇䝔䝮䜢ᵓ⠏䛧䛯䚹Fig. 2 䛻 ᐃᅇ㊰䜢♧䛩䚹HTS 㟁ὶ䝖䝷䞁䝇䛾౑⏝䛻䜘䜚䚸ᩘ 100A ⛬ᗘ䛾஺ὶ㟁ὶ䜢㏻㟁ྍ⬟䛸䛺䜚䚸ᚲせ䛸䛩䜛≉ᛶ䜢 ᐃ䛷䛝䜛䚹Fig. 3 䛿ヨᩱ⥺ᮦ䛻 11A~119A 䜎䛷䛾㟁ὶ䜢㏻㟁䛧䛯䛸䛝䛾 ᐃ⤖ᯝ䛾୍౛䛷䛒䜛䚹ヲ⣽䛻䛴䛔䛶䛿ᙜ᪥ሗ࿌䛩䜛䚹
ㅰ㎡㻌ᮏ◊✲䛿䛂䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛃஦ᴗ䛾୍⎔䛸䛧䛶䚸᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䠄NEDO䠅䛾ጤク䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌ཧ⪃ᩥ⊩㻌
1. K. Miyahara, et al.: Abstracts of CSJ Conference,
Vol.82 (2010) p.7.

Fig. 1 Measured field distributions and calculated current
distributions

Fig. 2 The experimental circuit
0.07
11A

0.06
Normalized voltage

㻌

86A

0.05

97A

0.04

119A

0.03
0.02
0.01
0
-1

0

1
2
3
4
5
The position of pickup coils, mm

6Fig. 3 Current dependence of measured field distributions

― 1 ―

第83回



2010年度秋季低温工学・超電導学会

1A-a02

HTS 線材評価஺ὶ㟁ຊᶵჾ⏝ RE-123 ຍᕤ⥺ᮦ䛾⮫⏺㟁ὶᐦᗘศᕸホ౯
Investigation of Critical Current Density Distribution in RE-123 Coated Conductors
Processed for AC Power Applications㻌㻌ᮾᕝ㻌 ⏥ᖹ㻘㻌 ᕝཱྀ㻌 㕲ᖹ㻘㻌 ሷཎ㻌 ᩗ㻘㻌 ஭ୖ㻌 ᫀ╬㻘㻌 ᮌ㡲㻌 㝯ᬸ㻌 㻔஑኱㻕㻧㻌⏫㻌 ᩗே㻘㻌 ⟃ᮏ㻌 ▱Ꮚ㻘㻌 䝸䞊㻌 䝉䝹䝀䜲㻘㻌 ⏣㎶㻌 ᆂ୍㻘㻌 ࿴Ἠ㻌 ㍤㑻㻘㻌 ሷཎ㻌 ⼥㻌 㻔㻵㻿㼀㻱㻯㻕㻧㻌᪂ᾏ㻌 ඃᶞ㻘㻌 ᑠす㻌 ᫀஓ㻘㻌 㜿ẚ␃㻌 ೺ᚿ㻘㻌 ኱ᯇ㻌 ୍ஓ㻌 㻔ఫ཭㟁ᕤ㻕㻧㻌 ᒸඖ㻌 ὒ㻌 㻔஑ᕞ㟁ຊ㻕㻌
HIGASHIKAWA Kohei, KAWAGUCHI Teppei, SHIOHARA Kei, INOUE Masayoshi, KISS Takanobu (Kyushu Univ.);
MACHI Takato, CHIKUMOTO Noriko, LEE Sergey, TANABE Keiichi, IZUMI Teruo, SHIOHARA Yuh (ISTEC);SHINGAI Yuki, KONISHI Masaya, ABIRU Kenji, OHMATSU Kazuya (SEI); OKAMOTO Hiroshi (Kyushu Electric Power Co., Inc.)
E-mail: kohei@super.ees.kyushu-u.ac.jp
㻝㻚㻌 䛿䛨䜑䛻
ᕼᅵ㢮⣔㧗 ㉸㟁ᑟ䠄RE-123䠅⥺ᮦ䛿䠈䛭䛾ᙧ≧䛾䜰䝇䝨䜽䝖ẚ䜢฼⏝䛧䛯஺ὶᦆኻ䛾పῶ䛜ぢ㎸䜎䜜䜛䛸ඹ䛻䠈≉䛻⣽⥺໬䞉䝬䝹䝏䝣䜱䝷䝯䞁䝖໬䛺䛹䛾⥺ᮦຍᕤ䛻䜘䜛஺ὶᦆኻపῶ䛜ᮇᚅ䛥䜜䛶䛔䜛䚹୍᪉䠈ຍᕤᚋ䛾⥺ᮦ䛾≉ᛶ䛿䠈ຍᕤ๓䛾⥺ᮦ䛾≉ᛶ䛾୙ᆒ୍ᛶ䜔ຍᕤ䝥䝻䝉䝇䛭䛾䜒䛾䛻䜘䜛ᙳ㡪䜢኱䛝䛟ཷ䛡䜛䛯䜑䠈⣲⥺ෆ䛾 Jc ศᕸ䜔䝣䜱䝷䝯䞁䝖䛤䛸䛾 Ic ್䛜タィ䛹䛚䜚䛻ᐇ⌧䛥䜜䜛䛛䛸䛔䛖Ⅼ䛻䛿༑ศ䛻ὀព䛩䜛ᚲせ䛜䜛䚹䛭䛣䛷ᮏ◊✲䛷䛿䠈䝩䞊䝹⣲Ꮚ㢧ᚤ㙾䜢⏝䛔䛯 Jc ศᕸホ౯ᡭἲ䛻䜘䛳䛶⣽⥺໬⥺ᮦ䛺䜙䜃䛻䝬䝹䝏䝣䜱䝷䝯䞁䝖⥺ᮦ䛾 ᐃ䜢⾜䛔䠈஺ὶ㟁ຊᶵჾ⏝ຍᕤ⥺ᮦ䛾ホ౯ᡭἲ䛸䛧䛶䛾㐺⏝ྍ⬟ᛶ䜢᳨ウ䛧䛯䚹

ㅰ㎡㻌ᮏ◊✲䛿䠈䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛾୍⎔䛸䛧䛶 ISTEC 䜢㏻䛨䛶 NEDO 䛛䜙䛾ጤク䜢ཷ䛡䛶ᐇ᪋䛩䜛䛸䛸䜒䛻䠈᪥ᮏᏛ⾡᣺⯆఍䛾⛉◊㈝䠄20360143䠈20䞉1945䠅䛾ຓᡂ䜢ᚓ䛶⾜䛳䛯䜒䛾䛷䛒䜛䚹㻌

10 mmScanned areayx

Measuredmagnetic fieldBz (mT)

Fig. 1. Setup example of the multifilamentary samples.
3.6

Bz

1.3

Sheet current
density
J (A/mm)

Sheet current
density
Jy (A/mm)

Sheet current
densityJx (A/mm)-1.0
12Filament 10
Filament 9
Filament 8
Filament 7
Filament 6
Filament 5
Filament 4
Filament 3
Filament 2
Filament 1

Jx

0
-12
12

Jy

0

10 mm

-12
12

J

y

6

x

0

Fig. 2. Distributions of remanent magnetic field and thecorresponding sheet current density in the sample.
8.0

Critical current
Ic (A)

㻟㻚㻌 ⤖ᯝ䞉⪃ᐹ㻌ヨᩱෆ䛻༑ศ䛻☢⏺䜢౵ධ䛥䛫䛯ᚋ䛻እ㒊☢⏺䜢㝖ཤ䛧䛯㝿䛾ṧ␃☢⏺ศᕸ䜢 Fig. 2 䛻♧䛩䚹ྛ䝣䜱䝷䝯䞁䝖䛻☢᮰䛜ᤕᤊ䛥䜜䛶䛚䜚䠈㛗ᡭ᪉ྥ䛻ⱝᖸ䛾ศᕸ䜢ᣢ䛳䛶䛔䜛ᵝᏊ䛜ᚓ䜙䜜䛶䛔䜛䚹䜎䛯䠈ྠᅗ䛻䛿☢⏺ศᕸ䛛䜙⟬ฟ䛧䛯㟁ὶศᕸ䜢䝅䞊䝖㟁ὶᐦᗘศᕸ䛸䛧䛶♧䛧䛶䛔䜛䚹ྠ㟁ὶᐦᗘ䛾ᡂศ䜢ぢ䜛䛸䠈䛭䜜䛮䜜䛾䝣䜱䝷䝯䞁䝖䛻཯᫬ィᅇ䜚䛾☢໬㟁ὶ䛜ὶ䜜䛶䛔䜛ᵝᏊ䛜䜟䛛䜛䚹䛣䛾᫬䛻ὶ䜜䜛☢໬㟁ὶ䛾㟁ὶᐦᗘ䛿⮫⏺
㟁ὶᐦᗘ䛻ᑐᛂ䛩䜛䛣䛸䛜ศ䛛䛳䛶䛚䜚䠈㟁ὶ䛾ྥ䛝䛾ධ䜜᭰䜟䜛䝣䜱䝷䝯䞁䝖୰ᚰ㍈௜㏆௨እ䛷䛿䠈⮫⏺㟁ὶᐦᗘศᕸ䛜 2ḟඖ㠃ෆ䛷ᚓ䜙䜜䛶䛔䜛䛣䛸䛻䛺䜛䚹䜎䛯䠈ᮏ⤖ᯝ䜢฼⏝䛩䜜䜀䠈౛䛘䜀ᖜ᪉ྥ䛻㟁ὶ್䜢✚⟬䛩䜛䛣䛸䛻䜘䜚䠈 Fig. 3 䛻♧䛩䜘䛖䛺䝣䜱䝷䝯䞁䝖䛤䛸䛾 Ic 䛾㛗ᡭ᪉ྥศᕸ䜢ホ౯䛩䜛䛣䛸䛜ྍ⬟䛸䛺䜛䚹䛣䛾䜘䛖䛻䠈Jc ศᕸ䜢㧗ゎീᗘ䠄100 䝭䜽䝻䞁௨ୗ䠅䛷ホ౯䛩䜛䛣䛸䛜ྍ⬟䛺ᮏᡭἲ䛻䜘䜚䠈஺ὶ㟁ຊᶵჾ⏝ຍᕤ⥺ᮦ䛾ຍᕤᢏ⾡☜❧䞉ရ㉁⟶⌮䛻㈉⊩䛷䛝䜛䛸ᮇᚅ䛧䛶䛔䜛䚹Ⓨ⾲ᙜ᪥䛻䛿䠈㞟ྜᑟయ䛾஺ὶᦆኻ䛻ከ኱䛺ᙳ㡪䜢୚䛘䜛 [2] 䠈⣽⥺໬⥺ᮦ䛾ᖜ᪉ྥ䛾 Jc ศᕸ䛻䛴䛔䛶䜒ሗ࿌䛩䜛ணᐃ䛷䛒䜛䚹

Two pieces of multifilamentary coated conductor
with 5 filaments in 5 mm width

6.0
filament10
filament9
filament8
filament7
filament6

4.0
2.0
0.0
15

20

8.0

Critical current
Ic (A)

㻞㻚㻌 ᪉ἲ㻌
Fig. 1 䛻䝬䝹䝏䝣䜱䝷䝯䞁䝖⥺ᮦ䛾䝉䝑䝖䜰䝑䝥౛䜢♧䛩䚹ヨᩱ䛻⏝䛔䛯䛾䛿 5 mm ᖜ 5 ศ๭䛾⥺ᮦ䛷䛒䜚䠈ᅗ୰䛻䛿 2 䛴䛾ヨᩱ䜢タ⨨䛧䛯౛䜢♧䛧䛶䛔䜛䚹ྠヨᩱ䛿እ㒊☢⏺༳ຍ⏝䛾
Bi-2223 䝁䜲䝹ෆ䛻タ⨨䛥䜜䛶䛚䜚䠈ྠ䝁䜲䝹䛿ᾮయ❅⣲ᵴ䛛䜙䛾⇕ఏᑟ䛻䜘䛳䛶෭༷䛥䜜䜛䠄79 K䠅䚹ヨᩱ䛻እ㒊☢⏺䜢༳ຍ䠋༳ຍᚋ䛻㝖ཤ䛧䛯㝿䛾ヨᩱ࿘㎶䛾☢⏺ศᕸ䜢㉮ᰝᆺ䝩䞊䝹⣲Ꮚ㢧ᚤ㙾䛻䜘䛳䛶 ᐃ䛧䠈Biot-Savart ๎䛾㏫ၥ㢟䜢ゎ䛟䛣䛸䛻䜘䛳䛶[1]䠈䛭䛾㝿䛾ヨᩱෆ䛾㟁ὶศᕸ䜢ホ౯䛧䛯䚹Bi-2223 coil with copper bobbin for external field to the sample

ཧ⪃ᩥ⊩㻌
[1] B. J. Roth et al., J. Appl. Phys., vol. 65, pp. 361-372, 1989.
[2] N. Amemiya et al.: presented at CCA 2010, O-E07.

35

40

Longitudinal position

25

30

x (mm)

45

50

6.0
filament5
filament4
filament3
filament2
filament1

4.0
2.0
0.0
15

20

35

40

Longitudinal position

25

30

x (mm)

45

50

Fig. 3. Longitudinal distribution of critical current obtainedfor each filament of the sample.

㻌
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HTS 線材評価㼀㻲㻭㻙㻹㻻㻰 ᡂ⭷䝥䝻䝉䝇䜈䛾㎿㏿䛺䝣䜱䞊䝗䝞䝑䜽䛻ྥ䛡䛯⮫⏺㟁ὶ≉ᛶ䛾㻌」ᩘヨᩱ䝬䝖䝸䝑䜽䝇☢Ẽ㢧ᚤἲ䛻䜘䜛ホ౯㻌Multi-sample matrix measurement of critical currents by magnetic microscopy for rapid
feedback to the fabrication processes of TFA-MOD film㻌ሷཎ㻌 ᩗ㻘㻌 ᮾᕝ㻌 ⏥ᖹ㻘㻌 ᕝཱྀ㻌 㕲ᖹ㻘㻌 ஭ୖ㻌 ᫀ╬㻘㻌 ᮌ㡲㻌 㝯ᬸ㻌 㻔஑኱䞉䝅䝇᝟㻕㻧㻌 ᱝ⏣㻌 㟹ே㻘㻌 ᑎす㻌 ு㻔஑኱䞉ᮦᕤ㻕㻧㻌㻌 ྜྷ✚ṇ᫭㻘㻌 ࿴Ἠ㻌 ㍤㑻㻔㻿㻾㻸㻙㻵㻿㼀㻱㻯㻕㻌
SHIOHARA Kei䠈 HIGASHIKAWA Kohei, KAWAGUCHI Teppei, INOUE Masayoshi, KISS Takanobu (Dept. of Electrical
System Engineering, Kyushu Univ.); MASUDA Yasuto, TERANISHI Ryo(Dept. of Material Engineering , Kyushu Univ. )YOSHIZUMI Masateru, IZUMI Teruo (SRL- ISTEC)
E-mail: shiohara@super.ees.kyushu-u.ac.jp㻝䠊䛿䛨䜑䛻㻌
䝖䝸䝣䝹䜸䝻㓑㓟ሷ/᭷ᶵ㔠ᒓሷሬᕸ⇕ศゎ(TFA-MOD)ἲ
䛻䜘䜚స〇䛥䜜䛯 Y1Ba2Cu3O7-į(YBCO)⥺ᮦ䛿㠀┿✵ୟ䛴䚸ᮦᩱ཰⋡䛾Ⰻ䛔⥺ᮦ䝥䝻䝉䝇䛷䛒䜛䛯䜑䚸ప䝁䝇䝖䞉㧗≉ᛶ⥺ᮦ䜢⏕⏘䛷䛝䜛⥺ᮦ䝥䝻䝉䝇䛸䛧䛶ᮇᚅ䛥䜜䛶䛔䜛[1]-[2]䚹䛧
䛛䛧䚸ᐇ⏝⥺ᮦᐇ⌧䛾䛯䜑䛻䛿䚸ሬᕸ䚸௬↝䚸ᮏ↝䛾ྛ䝥䝻䝉䝇䛻䛚䛔䛶✀䚻䛾స〇䝟䝷䝯䞊䝍䛾᭱㐺໬䛻䜘䜛㧗ᆒ୍ୟ䛴㧗⮫⏺㟁ὶ(Ic)䜢᭷䛩䜛Ᏻᐃ䛧䛯ᡂ⭷ᢏ⾡䛾☜❧䛜ᚲせ䛷䛒䜛䚹ᐇ⏝ୖ㔜せ䛸䛺䜛 Ic 䛾ホ౯䛻䛿䚸୍⯡䛻䛿ᅄ➃Ꮚἲ䜔 SQUID 䛻䜘䜛☢໬⋡ ᐃ䛾ᡭἲ䛜ᗈ䛟⏝䛔䜙䜜䛶䛔䜛䚹䛧䛛䛧䚸䛣䜜䜙䛾ホ౯᪉ἲ䛛䜙䛿ᖹᆒ໬䛥䜜䛯 Ic ್䛾䜏䛧䛛ᚓ䜛䛣䛸䛜ฟ᮶䛺䛔䚹䛣䛣䛷䚸⥺ᮦస〇䝥䝻䝉䝇䜈䛾䝣䜱䞊䝗䝞䝑䜽䛾ほⅬ䛛䜙⪃䛘䜛䛸䚸ᒁᡤⓗ䛺 Ic ್䛛䜙ศ䛛䜛Ḟ㝗䛾఩⨨䜔ヨᩱ୙ᆒ୍ᛶ䛻㉳ᅉ䛩䜛✵㛫ศᕸ䛻䛴䛔䛶䛾᝟ሗ䛿ᴟ䜑䛶᭷⏝䛸䛺䜛䚹䛧䛛䛧䚸㠃ෆ䛾஧ḟඖศᕸ䛜ホ౯ྍ⬟䛺ᡭἲ䛿ᮍ䛰☜❧䛥䜜䛶䛔䛺䛔䚹ᮏ◊✲䛷䛿䚸స〇䝥䝻䝉䝇䜈䛾㎿㏿䛺䝣䜱䞊䝗䝞䝑䜽䜢ྍ⬟䛸䛩䜛ຠᯝⓗ䛺 Ic 䛾ホ౯ἲ䛸䛧䛶䚸㠀᥋ゐ䞉㠀◚ቯ䛸䛔䛖≉ᚩ䜢᭷䛩䜛☢Ẽ㢧ᚤἲ(㉮ᰝᆺ䝩䞊䝹⣲Ꮚ㢧ᚤ㙾;SHPM)䜢ᇶ䛻䚸స〇䛧䛯ヨᩱ䛾 Ic ୪䜃䛻䛭䛾ᒁᡤศᕸ䜢ᐃ㔞ⓗ䛻ୟ䛴䚸㎿㏿䛻ホ౯䛜ྍ⬟䛺᪉ἲ䜢ሗ࿌䛩䜛䚹㻌㻞䠊ᐇ㦂᪉ἲ㻌ᮏ◊✲䛷䛿䚸Ion㻌 Beam Assisted Deposition(IBAD)䛻䜘䜚
MgO ୰㛫ᒙ䛾⤖ᬗ⢏䜢㓄ྥ䛥䛫䚸䛥䜙䛻 Cap ᒙ䛸䛧䛶䛾 CeO2
ᒙ䜢✚ᒙ䛥䛫䛯ᇶᯈୖ䛻 Cu-䝘䝣䝔䞁㓟ሷ䜢⏝䛔䜛䜘䜚䜒స〇㏿ᗘ䛾ྥୖ䛜ぢ㎸䜑䜛 Cu-䜸䜽䝏䝹㓟ሷ䛸 Y, Ba-TFA ሷ䜢䜰䝹䝁䞊䝹⣔⁐፹䛻⁐ゎ䛥䛫䛯⁐ᾮ䜢䚸ሬᕸᚋ⇕ฎ⌮䜢⾜䛔⥺ᮦ䜢స〇䛧䛯䚹స〇䛧䛯 TFA-MOD ἲ YBCO ⥺ᮦ䜢 SHPM 䛾ヨᩱ䝇䝔䞊䝆≧䛻䝬䝖䝸䜽䝇≧䛻㓄⨨䛧䚸ఏᑟ෭༷䛻䜘䜚 79 K 䛻෭༷䛧䚸እ㒊☢⏺䜢༳ຍ䠋㝖ཤ䛧䛯㝿䛾⥺ᮦ䛻䛚䛡䜛☢⏺ศᕸ䛻䛴䛔䛶䝩䞊䝹⣲Ꮚ䜢ヨᩱ⾲㠃䛻䛶㉮ᰝ䛩䜛䛣䛸䛻䜘䜚 ᐃ䜢⾜䛳䛯䚹䜎䛯䚸ᮏ ᐃ䛷ᚓ䛯☢⏺ศᕸ䛻ᑐ䛧䛶 Biot-Savart ๎䛾
㏫ၥ㢟䜢ゎ䛟䛣䛸䛻䜘䜚䚸⥺ᮦෆ䛾㟁ὶศᕸ䜢ホ౯䛧䛯
[3]-[5]䚹
㻟䠊ᐇ㦂⤖ᯝཬ䜃⪃ᐹ㻌㻌 ᮏ ᐃ 䛻 䛿䚸 ⥺ ᮦ ᡂ ⭷ ᫬ 䛾 ⁐ ᾮ ሬ ᕸ ẁ 㝵 䛻 䛶 ప ‵ ᗘ(30-35%)䛻ไᚚ䛧䛯TFA-MODἲ䛻䜘䜚స〇䛥䜜䛯1 cmᖜ䛾
YBCO⥺ᮦ䜢౑⏝䛧䛯䚹☢᮰䛜୰ᚰ䛻฿㐩䛩䜛እ㒊☢⏺௨ୖ䛻༳ຍ䛧䚸㝖ཤᚋ䛾ṧ␃☢⏺䛾ᆶ┤ᡂศ(Bz)䜢⥺ᮦ⾲㠃䛻䛶䝩䞊䝹⣲Ꮚ䜢஧ḟඖ䛷㉮ᰝ䛧 ᐃ䛧䛯䚹Fig.1䛻ᚓ䜙䜜䛯
Bz䛾ീཬ䜃䚸䛣䛾Bzീ䜘䜚䚸Biot-Savart๎䛾㏫ኚ᥮䜢⏝䛔䛶䚸⥺ᮦ⾲㠃䛾䝅䞊䝖㟁ὶᐦᗘศᕸ(J)䜢ᑟฟ䛧䛯䚹㛗ᡭ᪉ྥᡂศJx 䚸ᖜ᪉ྥᡂศJy䚸䝅䞊䝖㟁ὶᐦᗘJ䛻䛴䛔䛶䜒Fig.1䛻♧䛩䚹㻌 ௨ୖ䛾⤖ᯝ䜘䜚䚸ᮏヨᩱ䛻䛴䛔䛶䛿ヨᩱෆ䛻୙ᆒ୍ศᕸ䛜ぢཷ䛡䜙䜜䜛䚹䝅䞊䝖㟁ὶᐦᗘ䛻䛚䛔䛶䛿䚸᭱䜒㧗䛔㒊ศ䛻

Fig.1 Perpendicular component of remanent field , Bz,
measured by the SHPM, longitudinal component of sheet
current, Jx, transverse component of sheet current, Jy,
and amplitude of sheet current, J. White square line
indicates the edge of sample.
䛚䛔䛶䛿2.6 A/mm⛬ᗘ䜢♧䛧䚸᭱䜒ప䛔㒊ศ䛻䛚䛔䛶䛿0.8
A/mm⛬ᗘ䜢♧䛧䛯䚹䛣䛾⤖ᯝ䛛䜙䚸SHPM䛻䜘䜚㠀᥋ゐ䞉㠀◚ቯ䛻䛶⥺ᮦෆ䛾㟁ὶᐦᗘศᕸ䛻䛴䛔䛶☜ㄆ䛩䜛䛣䛸䛜ฟ᮶䚸௒ᚋ䛾⥺ᮦస〇䝥䝻䝉䝇䜈䛾䝣䜱䞊䝗䝞䝑䜽䜈䛾᭷ຠ䛺 ᐃ䛸䛺䜚ᚓ䜛䛣䛸䛜
ศ䛛䛳䛯䚹
ㅰ㎡㻌
ᮏ◊✲䛿䠈䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛾୍⎔䛸䛧䛶ISTEC䜢㏻䛨䛶NEDO䛛䜙䛾ጤク䜢ཷ䛡䛶ᐇ᪋䛩䜛䛸䛸䜒䛻䠈᪥ᮏᏛ⾡᣺⯆఍䛾⛉◊㈝(20360143)䛾ຓᡂ䜢ᚓ䛶⾜䛳䛯䜒
䛾䛷䛒䜛䚹
ཧ⪃ᩥ⊩㻌
1. T. Izumi, et al.: Physica C, Vol. 463-465, pp.510-514,
2007-5
2. Y. Shiohara, et al.: Supercond. Sci. Technol., Vol. 21, p.
034002, 2008-2
3. T. Kiss, et al.: IEEE Trans. Appl. Supercond., vol. 17, pp.
3211–3214, 2007-6
4. M. Inoue, et al.: IEEE Trans. Appl. Supercond., vol. 19, pp.
2847–2850, 2009-6
5. B. J. Roth, et al.: J. Appl. Phys., vol. 65, pp. 361–372,
2001-1.

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HTS 線材評価㉸ఏᑟ㟁ὶ䝖䝷䞁䝇䜢⏝䛔䛯㧗㉸ఏᑟ኱ᆺᑟయ䛾㏻㟁≉ᛶᐃ㻌㻹㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼛㼒㻌㼠㼞㼍㼚㼟㼜㼛㼞㼠㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼕㼚㻌㻴㼀㻿㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼣㼕㼠㼔㻌㼘㼍㼞㼓㼑㻌㼏㼡㼞㼞㼑㼚㼠㻌㼏㼍㼜㼍㼏㼕㼠㼕㼑㼟㻌㼎㼥㻌㼡㼟㼕㼚㼓㻌㻴㼀㻿㻌㼏㼡㼞㼞㼑㼚㼠㻌㼠㼞㼍㼚㼟㼒㼛㼞㼙㼑㼞㻌㻌๓ཎ㻌 ୍ᬛ㻘㻌 ᖹᒣ㻌 ᩧ㻘㻌 ᕝ⏿㻌 ⛅㤿㻌 㻔㮵ඣᓥ኱㻕㻌㻹㻭㻱㻴㻭㻾㻭㻌㻷㼍㼦㼡㼠㼛㼙㼛㻘㻌㻴㻵㻾㻭㼅㻭㻹㻭㻌㼀㼍㼐㼍㼟㼔㼕㻘㻌㻷㻭㼃㻭㻮㻭㼀㻭㻌㻿㼔㼡㼙㼍㻌㻔㻷㼍㼓㼛㼟㼔㼕㼙㼍㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㻜㻢㻞㻜㻟㻡㻞㻬㼗㼍㼐㼍㼕㻚㼖㼜㻌 㻌㻌䛨 㻞㻜㼙㼙 䛸䛧䛯䚹㠃ᅽ䛿䝛䝆⥾䜑䜢䝖䝹䜽⟶⌮䛩䜛䛣䛸䛻䜘䛳䛶㻝䠊䛿䛨䜑䛻㻌
⾜䛔䚸せ⣲ᐇ㦂䛷ᚓ䜙䜜䛯㠃ᅽ䜢༳ຍ䛧䛯䚹㻌㏆ᖺ䚸㧗 ㉸ఏᑟᑟయ䛾⥺ᮦ໬ᢏ⾡䛾ྥୖ䛻క䛔䚸పᦆ㻲㼕㼓㻚㻌㻟 䛻ษ᩿๓ᚋ䛾㟁ὶ䝖䝷䞁䝇䛾 㻞 ḟഃ㟁ὶ䛾࿘Ἴᩘ౫ኻ䛷኱㟁ὶᐜ㔞䛾㧗 ㉸ఏᑟ኱ᆺᑟయ䛾㛤Ⓨ◊✲䛜┒䜣Ꮡᛶ䜢♧䛩䚹㻲㼕㼓㻚㻌㻟 䛾⦪㍈䛿 㻝 ḟഃ㟁ὶ䛻ᑐ䛩䜛 㻞 ḟഃ㟁ὶ䛻⾜䜟䜜䛶䛔䜛䚹䛣䛾䜘䛖䛺㧗 ㉸ఏᑟ኱ᆺᑟయ䛾஺ὶᦆኻ䛾್䛷䛒䜚䚸ᶓ㍈䛿࿘Ἴᩘ䛷䛒䜛䚹ᅗ୰䛾Ⅼ⥺䛚䜘䜃ᐇ⥺䛿䜔ᑟయෆ䛾㟁ὶศᕸ䛺䛹䛾ᇶ♏㟁☢≉ᛶ䜢✀䚻䛾㟁☢⎔㟁ὶ䝖䝷䞁䝇䜔ヨᩱᑟయ䛾䝟䝷䝯䞊䝍䜢⏝䛔䛶ᚓ䜙䜜䛯ィ⟬ቃୗ䜔ᖜᗈ䛔 ᗘ㡿ᇦ䛷ᐃ㔞ⓗ䛻ホ౯䛩䜛䛣䛸䛿䚸㉸ఏᑟ್䛷䛒䜛䚹䝣䜱䝑䝔䜱䞁䜾䝟䝷䝯䞊䝍䛸䛧䛶᥋⥆㒊䛾᥋⥆᢬್䜢ᶵჾ䛾タィୖ㠀ᖖ䛻㔜せ䛷䛒䜛䚹ᮏ◊✲䛷䛿䚸㧗 ㉸ఏᑟ౑⏝䛧䛯⤖ᯝ䚸᥋⥆㒊䛾᢬ᢠ್䛿⣙ 㻞P:䛸䛺䜚䚸せ⣲ᐇ㦂䛷኱ᆺᑟయ䛾✀䚻䛾≉ᛶホ౯䛜ྍ⬟䛺䝁䞁䝟䜽䝖䛺⿦⨨䜢㛤䛾⤖ᯝ䛸Ⰻ䛔ᩚྜᛶ䛜ᚓ䜙䜜䛯䚹᥋⥆㛗䜢ኚ໬䛥䛫䛯䛸䛝䛾Ⓨ䛧䚸䛭䛾㟁☢≉ᛶ䛾ᢕᥱ䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛶䛔䜛䚹䛣䛣䛷ᐃ⤖ᯝ➼䛻䛴䛔䛶䛿䚸ᙜ᪥ሗ࿌䛩䜛䚹㻌䛿䚸᪤䛻స〇䛧䛶䛔䜛㧗 ㉸ఏᑟ㟁ὶ䝖䝷䞁䝇䜢฼⏝䛧䛶㻌✀䚻䛾㧗 ㉸ఏᑟ኱ᆺᑟయ䛾㏻㟁≉ᛶ䜢 ᐃ䛷䛝䜛䜘䛖䛻䚸ཧ⪃ᩥ⊩㻌㟁ὶ䝖䝷䞁䝇䛻ヨᩱᑟయ䜢ప᢬ᢠ䛷䚸䛛䛴⡆౽䛷⧞䜚㏉䛧᥋㻝㻚㻌 S. Kawabata, Y. Nakahama, A. Kawagoe, and F. Sumiyoshi,⥆ྍ⬟䛺᥋⥆᪉ἲ䛻䛴䛔䛶せ⣲ᐇ㦂䛻䜘䜚᳨ウ䛧䛯䚹䛥䜙䛻䚸“Development of a Compact HTS Current Transformer for evaluatingᚓ䜙䜜䛯⤖ᯝ䜢ᐇ㝿䛾㟁ὶ䝖䝷䞁䝇䛻㐺⏝䛧䚸ヨᩱᑟయ䛾㏻
the Characteristics of HTS Conductors,” IEEE Trans. Appl. Supercond.,㟁≉ᛶ䜢 ᐃ䛧䛯䚹௨ୖ䛾⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌vol. 18, no. 2, pp. 1147-1150, June, 2008.

㻟䠊せ⣲ᐇ㦂⤖ᯝཬ䜃᳨ウ㻌᥋⥆㒊䛻༳ຍ䛩䜛㐺ษ䛺㠃ᅽ䜢ᚓ䜛䛯䜑䛻䚸䜎䛪㠃ᅽ䛸⮫⏺㟁ὶ䛾㛵ಀ䜢 ᐃ䛧䛯䚹㻞 ᯛ䛾 㻮㼕㻙㻞㻞㻞㻟 ⥺ᮦ䜢 㻞㻜㼙㼙 㛗䜸䞊䝞䞊䝷䝑䝥䛥䛫䛶䚸䝧䞊䜽ᯈ䛷ᣳ䜏䚸䝛䝆⥾䜑䛧䛶㠃ᅽ䜢༳ຍ䛧䛯䚹㠃ᅽ䛿䝛䝆⥾䜑䛿䝖䝹䜽⟶⌮䛩䜛䛣䛸䛻䜘䜚⾜䛳䛯䚹⥺ᮦ㛫䛾᥋ゐ≧ἣ䜔༳ຍ䛥䜜䛯ᐇ㝿䛾㠃ᅽ䛻䛴䛔䛶䛿䚸㠃ᅽ䝅䞊䝖䜢⏝䛔䛶☜ㄆ䛧䛯䚹 ᐃ䛾⤖ᯝ䚸⥺ᮦ䛾⮫⏺㟁ὶ䛿㻠㻜㻹㻼㼍 䜢ᑡ䛧㉺䛘䛯್䛛䜙ῶᑡ䛧ጞ䜑䜛䛣䛸䛜䜟䛛䛳䛯䛯䜑䚸༳ຍ䛩䜛㠃ᅽ䛿 㻠㻜㻹㻼㼍 䛸䛧䛯䚹㻌㟁ὶ䝖䝷䞁䝇䛾 㻞 ḟഃ⥺ᮦ䛿 㻝㻢 ᮏ䛾 㻮㼕㻙㻞㻞㻞㻟 ⥺ᮦ䛛䜙䛺䜛䛯䜑䚸▷ᑻ┤⥺≧䛾 㻮㼕㻙㻞㻞㻞㻟 ⥺ᮦ䜢 㻝㻢 ᮏ⏝䛔䛯୪ิᑟయ䜢స〇䛧䚸㻠㻜㻹㻼㼍 ༳ຍ䛧䛯䛸䛝䛾᥋⥆᢬ᢠ䜢 ᐃ䛧䛯䚹䛭䛾⤖ᯝ䚸≉ᛶホ౯䜢⾜䛖ୖ䛷༑ศ䛺 㻞P:䛾᥋⥆᢬ᢠ䛜ᚓ䜙䜜䛯䚹㻌㻌㻠䠊せ⣲ᐇ㦂⤖ᯝ䛾㟁ὶ䝖䝷䞁䝇䜈䛾㐺⏝㻌せ⣲ᐇ㦂䛻䜘䜚ᚓ䜙䜜䛯᥋⥆᮲௳䜢ᐇ㝿䛾㟁ὶ䝖䝷䞁䝇䛻㐺⏝䛧䛯䚹㻲㼕㼓㻚㻌 㻞 䛻♧䛩䜘䛖䛻㟁ὶ䝖䝷䞁䝇䛻㏆䛔ഃ䛾 㻞 ḟഃ䝁䜲䝹ᘬ䛝ఙ䜀䛧㒊ศ䜢ษ᩿䛧䛯䚹ษ᩿ᚋ䛾ᑟయ㛫䛻 㻲㼕㼓㻚㻌 㻞䛻♧䛩䜘䛖䛻 㻝㻜㻜P㼙 ཌ䛾䜲䞁䝆䜴䝮䝅䞊䝖䜢ᣳ䜣䛰ᚋ䚸ୖୗ䛛䜙䝧䞊䜽ᯈ䛷ᢲ䛥䛘䛶䝛䝆␃䜑䛧䛯䚹᥋⥆㛗䛿せ⣲ᐇ㦂䛸ྠ㻌

Fig. 1.

㻌Overview of the HTS current transformer

Fig. 2. The schematic diagram of the joint section between HTS-CT
and sample conductor.



30
25
20

I2 / I1㻞䠊㟁ὶ䝖䝷䞁䝇䛸ヨᩱᑟయ䛸䛾᥋⥆᪉ἲ㻌ヨᩱᑟయ䜈䛾㏻㟁䛻⏝䛔䜛㟁ὶ䝖䝷䞁䝇䛿䚸㻝 ḟഃ䚸㻞 ḟഃ䛸䜒䛻 㻮㼕㻙㻞㻞㻞㻟㻌 ⥺ᮦ䜢ᕳ⥺䛻⏝䛔䛶䛚䜚䚸㻡㻜㻭 ⛬ᗘ䛾ᑠᐜ㔞㟁※䛷 㻣㻣㻷 䛻䛚䛔䛶 㻝㼗䠝⣭䛾஺ὶ㟁ὶ䜢㏻㟁䛩䜛䛣䛸䛜䛷䛝䜛㼇㻝㼉䚹㟁ὶ䝖䝷䞁䝇䛾ᴫほ෗┿䜢 㻲㼕㼓㻚㻝㻌 䛻♧䛩䚹㻝 ḟഃᕳ⥺䛿䚸⥺ᮦ 㻝 ᮏ䜢⏝䛔䛶 㻝㻟㻟 䝍䞊䞁ᕳ⥺䛧䛶䛚䜚䚸㻞 ḟഃᕳ⥺䛿䚸㻝㻢ᮏ䛾⥺ᮦ䛛䜙ᡂ䜛୪ิᑟయ䜢⏝䛔䛶䚸㻞 䝍䞊䞁ᕳ⥺䛧䛯䜒䛾䛷䛒䜛䚹㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛻䚸䛣䜜䜎䛷䛿㟁ὶ䝖䝷䞁䝇䛾 㻞 ḟഃᕳ⥺䜢ᘬ䛝ఙ䜀䛧䛶ヨᩱᑟయ䛸䛧䛶౑⏝䛧䛶䛔䛯䛜䚸✀䚻䛾ᑟయ䛾≉ᛶホ౯䜢⾜䛖䛯䜑䛻䛿䚸㟁ὶ䝖䝷䞁䝇䛸㈨ᩱᑟయ䛸䛾᥋⥆᪉ἲ䛻䛴䛔䛶䛾᳨ウ䛜ᚲせ䛷䛒䜛䚹㻌᥋⥆㒊䛾‶䛯䛩せ௳䛸䛧䛶䛿䚸㻔㻝㻕≉ᛶホ౯䛜༑ศ⾜䛘䜛䛰䛡䛾ప᢬ᢠ䛾᥋⥆᢬ᢠ䛷䛒䜛䛣䛸䚸㻔㻞㻕⧞䜚㏉䛧ᑟయ䜢᥋⥆䛷䛝䜛䛣䛸䚸㻔㻟㻕⡆౽䛺᥋⥆᪉ἲ䛷䛒䜛䛣䛸䚸䛺䛹䛜ᣲ䛢䜙䜜䜛䚹䛭䛣䛷䛣䛾䜘䛖䛺せ௳䜢‶䛯䛩䛯䜑䛻䚸༙⏣᥋⥆䛾௦䜟䜚䛻䚸䝧䞊䜽ᯈ䛷ヨᩱᑟయ䜢ᣳ䜏䝛䝆␃䜑䛩䜛ᅽຊ䛻䜘䜛᥋⥆᪉ἲ䛾᥇⏝䜢᳨ウ䛧䛯䚹㻌

15
Before cuƫng

10AŌer cuƫng
Before cuƫng

5AŌer cuƫng
0
0.1

1

10

100

Frequency (Hz)Fig. 3. Current ratio of Superconductor transfer by joint length



㻌

― 4 ―

第83回

2010年度秋季低温工学・超電導学会

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HTS 線材評価䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䛻䜘䜛㧗 ㉸ఏᑟ⥺ᮦ䛾஺ὶᦆኻ≉ᛶホ౯㻌䇷 ᐃᏊ䛾䝬䝹䝏㓄⨨䛻䜘䜛ከⅬྠ᫬ ᐃ䇷㻌㻭㻯㻌㻸㼛㼟㼟㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼑㼟㼠㼕㼙㼍㼠㼕㼛㼚㻌㼛㼒㻌㼔㼕㼓㼔㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼣㼕㼞㼑㼟㻌㻙㻌㻹㼡㼘㼠㼕㼜㼛㼕㼚㼠㻌㼙㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼎㼥㻌㼙㼡㼘㼠㼕㻙㼍㼞㼞㼍㼚㼓㼑㼙㼑㼚㼠㻌㼛㼒㻌㼙㼑㼍㼟㼡㼞㼕㼚㼓㻌㼟㼑㼚㼟㼛㼞㼟㻌㻙㻌ඵ㔜ᒣ㻌 ὒᖹ䚸㻌 ⩚⏕㻌 ኱ோ䚸㻌 ᕝ㉺㻌 ᫂ྐ䚸㻌 ఫྜྷ㻌 ᩥኵ㻌 䠄㮵ඣᓥ኱䞉ᕤ䠅㻌
HAEYAMA Youhei, HABU Kisato, KAWAGOE Akifumi, SUMIYOSHI Fumio (Kagoshima University)
E-mail: k3058588@kadai.jp
䠍䠊䛿䛨䜑䛻㧗 ㉸ఏᑟ⥺ᮦ䛷Ⓨ⏕䛩䜛஺ὶᦆኻ䛿ᶵჾ䛾ຠ⋡䜢పῶ䛥䛫䜛䛯䜑䚸ᐇᶵ䛾᮲௳ୗ䛷஺ὶᦆኻ䜢⢭ᗘⰋ䛟 ᐃ䛧䚸䛭䛾≉ᛶ䜢ᐃ㔞ⓗ䛻᫂䜙䛛䛻䛩䜛䛣䛸䛜㔜せ䛷䛒䜛䚹䛭䛣䛷ᡃ䚻䛿䚸እ㒊☢⏺䛸㍺㏦㟁ὶ䛻䛴䛔䛶ไ⣙᮲௳䛾ᑡ䛺䛔஺ὶᦆኻ ᐃ᪉ἲ䛸䛧䛶䚸䛂䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䛃䜢ᥦ᱌䛧䚸䛭䛾᭷ຠᛶ䜢ᐇド䛧䛶䛔䜛 [1,2] 䚹ᮏ ᐃ᪉ἲ䛿䚸▷ᑻ┤⥺ᙧ≧䝃䞁䝥䝹䛾䜏䛺䜙䛪䚸ከᒙ䝋䝺䝜䜲䝗䝁䜲䝹䜔␯ᕳ䝁䜲䝹䚸䜎䛯ᵝ䚻䛺᩿㠃ᙧ≧䛾ᑟయ䛷స䛳䛯䝁䜲䝹䛻⮳䜛䜎䛷 ᐃ䛷䛝䜛䛸䛔䛖≉㛗䜒ᣢ䛳䛶䛔䜛䚹䛧䛛䛧䛺䛜䜙䛣䜜䜎䛷䛿䚸 ᐃ䝉䞁䝃䞊䜢 㻞 䝉䝑䝖㓄⨨䛧䛶䛭䜜䜙䜢⛣ື䛥䛫䛺䛜䜙ᩘ༑Ⅼ䛾 ᐃ䜢⾜䛖䛣䛸䜔䚸ᴟప ⎔ቃୗ䛷 ᐃ䝉䞁䝃䞊䜢ື䛛䛩䛯䜑䛻䚸䛭䛾㥑ືᶵᵓ䛻୙ලྜ䛜⏕䛨䜛䛺䛹䛧䛶䚸୍᮲௳䛾 ᐃ䝕䞊䝍䜢ᚓ䜛䛯䜑䛻㛗䛔᫬㛫䛜ᚲせ䛷䛒䛳䛯䚹䛭䛣䛷௒ᅇ䛿䚸䝃䞁䝥䝹࿘ᅖ䛻 ᐃ䝉䞁䝃䞊䜢ከᩘ㓄⨨䛩䜛䛣䛸䠄䝬䝹䝏㓄⨨䠅䛻䜘䜚 ᐃ᫬㛫䜢▷⦰䛧䚸 ᐃ䜢⡆᫆໬䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛶䛔䜛䚹ᮏⓎ⾲䛷䛿䚸 ᐃ䝉䞁䝃䞊䜢䝬䝹䝏㓄⨨䛧䛶䜒 ᐃྍ⬟䛷䛒䜛䛣䛸䜢☜ㄆ䛩䜛䛯䜑䛻⾜䛳䛯༢ᒙ␯ᕳ䝁䜲䝹䛾஺ὶᦆኻ ᐃ䛾⤖ᯝ䜢ሗ࿌䛩䜛䚹㻌ཧ⪃ᩥ⊩㻌[1]㻌 ఫྜྷᩥኵ ௚, ప ᕤᏛ,㻌 vol. 35,㻌 No.12,㻌 p575,㻌 2000[2]㻌 Y. Kasahara, et al.: IEEE Trans. Appl. Supercond. 14(2004) 1078䠎䠊ᮏ ᐃ⿦⨨䛸 ᐃ᪉ἲ䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䛷䛿䚸㟁⏺ ᐃ⏝䝫䝔䞁䝅䝱䝹䝸䞊䝗䛸☢⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䜢⏝䛔䛶㟁⏺䛸☢⏺䜢 ᐃ䛧䚸䛭䜜䜙䛾እ✚䛛䜙䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜢ồ䜑䜛䚹஺ὶᦆኻ䜢⢭ᗘⰋ䛟 ᐃ䛩䜛䛻䛿䚸䝫䝔䞁䝅䝱䝹䝸䞊䝗㟁ᅽ䛻ྵ䜎䜜䜛኱䛝䛺ㄏᑟᛶ㟁ᅽ䜢䜻䝱䞁䝉䝹䛩䜛ᚲせ䛜䛒䜚䚸䛣䜜䛻䛿䚸䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾㟁ᅽ䜢⏝䛔䜛䚹㻌௒ᅇ䛿䜎䛪䚸༢ᒙ䝋䝺䝜䜲䝗䝁䜲䝹≧㛗ᑻ䝃䞁䝥䝹䛾஺ὶᦆኻ ᐃ⿦⨨䛻䛴䛔䛶䚸䝬䝹䝏㓄⨨䛾᳨ウ䜢⾜䛳䛯䚹Fig.1 䛸
Fig.2 䛿䚸䝢䝑䜽䜰䝑䝥䝁䜲䝹䛸䝫䝔䞁䝅䝱䝹䝸䞊䝗䛾ᴫ␎ᅗ䛷䛒
䜛䚹」ᩘ䛾䝫䝔䞁䝅䝱䝹䝸䞊䝗䜢䝃䞁䝥䝹䛻ྲྀ䜚௜䛡䜛䛯䜑䛻䛿䚸䛭䜜䛮䜜䛾䝫䝔䞁䝅䝱䝹䝸䞊䝗䜢඲䛶䝃䞁䝥䝹䛻༙⏣௜䛡䛩䜛ᚲせ䛜䛒䜛䛸⪃䛘䜙䜜䛶䛔䜛䚹䛧䛛䛧䛺䛜䜙䚸ከᩘ䛾༙⏣௜䛡䜢୍⟠ᡤ䛻⾜䛖䛸䝃䞁䝥䝹䛾ຎ໬䜢ᘬ䛝㉳䛣䛩༴㝤ᛶ䛜䛒䜛䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸⥺ᮦ㍈᪉ྥ䛾㟁☢⏺䛾ᆒ୍ᛶ䛻╔┠䛧䚸䝃䞁䝥䝹䝁䜲䝹䛻༙⏣௜䛡䛧䛶ᘬ䛝ฟ䛧䛯䝸䞊䝗⥺䛻䛭䜜䛮䜜䛾䝫䝔䞁䝅䝱䝹䝸䞊䝗䜢༙⏣௜䛡䛩䜛᪉ἲ䜢⪃᱌䛧䛯䚹䛣䛾᪉ἲ䛷䛒䜜䜀䚸䝃䞁䝥䝹䛻┤᥋༙⏣௜䛡䛩䜛ᩘ䛿䚸ᚑ᮶䛾᪉ἲ䛸ኚ䜟䜙䛺䛔䚹௒ᅇ䛿䚸䝃䞁䝥䝹䝁䜲䝹䛾ෆഃ䛸እഃ䛻䝫䝔䞁䝅䝱䝹䝸䞊䝗䛸䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾䝨䜰䜢 㻣 䝉䝑䝖㓄⨨䛧䛯䚹㻌㻌䠏䠊㻮㼕㻙㻞㻞㻞㻟 㛗ᑻከⰺ䝔䞊䝥⥺ᮦ䜢⏝䛔䛯஺ὶᦆኻ ᐃ㻌 㻌㼀㼍㼎㼘㼑䠍䛻䝃䞁䝥䝹䝁䜲䝹䛾䝟䝷䝯䞊䝍䜢♧䛩䚹ᕳ⥺䛻⏝䛔䛯⥺ᮦ䛿䚸ᖜ 㻠㻚㻞㼙㼙㻘㻌 ཌ䜏 㻜㻚㻞㼙㼙 䛾㖟䝅䞊䝇 㻮㼕㻙㻞㻞㻞㻟 ከⰺ䝔䞊䝥⥺ᮦ䛷䛒䜛䚹㻌 㛗䛥 㻟㼙 䛾⥺ᮦ䜢 㻝㻜㼙㼙 䝢䝑䝏䛷 㻝㻞 䝍䞊䞁ᕳ䛔䛯༢ᒙ␯ᕳ䝋䝺䝜䜲䝗䝁䜲䝹㻔┤ᚄ 㻤㻜㼙㼙㻕䜢䝃䞁䝥䝹䝁䜲䝹䛸䛧䛯䚹䝃䞁䝥䝹䝁䜲䝹䛾⮫⏺㟁ὶ 㻵㼏 䛿 㻝㻜㻟㻭 䛷 㼚 ್䛿 㻝㻤㻚㻡䛷䛒䛳䛯䚹 ᐃ⤖ᯝ䛻䛴䛔䛶䛿ᙜ᪥ሗ࿌䛩䜛䚹㻌

― 5 ―

㻌
㻌
㻌
㻌
㻌
㻌

Fig.1 Configuration of pick-up coils

Fig.2 Configuration of potential leads
Table1 Parameter of sample coil
total tape length3m
total number of turns
12
number of measured turns
2
coil diameter
80mm
coil length
180mm
one pitch length
10mm

第83回

2010年度秋季低温工学・超電導学会

1A-a06

HTS 線材評価㻴㼀㻿 ⥺ᮦ䛾㏻㟁㟁ὶ䛸఩┦䛜␗䛺䜛እ㒊☢⏺ୗ䛷䛾஺ὶᦆኻ≉ᛶ䛻㛵䛩䜛◊✲㻌㻭㻯㻌㼘㼛㼟㼟㻌㼛㼒㻌㻴㼀㻿㻌㼠㼍㼜㼑㻌㼡㼚㼐㼑㼞㻌㼑㼤㼠㼑㼞㼚㼍㼘㻌㼒㼕㼑㼘㼐㻌㼐㼕㼒㼒㼑㼞㼑㼚㼠㻌㼒㼞㼛㼙㻌㼠㼞㼍㼚㼟㼜㼛㼞㼠㻌㼏㼡㼞㼞㼑㼚㼠㻌㼜㼔㼍㼟㼑㻌㻌ᫍ㔝㻌 ೺䠈ὠ⏣㻌 ⌮䠈℈ᓥ㻌 㧗ኴ㑻䠄ᮾ໭኱䠅㻌㻴㻻㻿㻴㻵㻺㻻㻌㻷㼑㼚䠈㻌 㼀㻿㼁㻰㻭㻌㻹㼍㼗㼛㼠㼛䠈㻌 㻴㻭㻹㻭㻶㻵㻹㻭㻌㼀㼍㼗㼍㼠㼍㼞㼛㻌㻔㼀㼛㼔㼛㼗㼡㻌㼁㼚㼕㼢㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼔㼛㼟㼔㼕㼚㼛㻬㼑㼏㼑㼕㻚㼠㼛㼔㼛㼗㼡㻚㼍㼏㻚㼖㼜㻌㻌䛻䛚䛔䛶ᦆኻ䛜᭱኱䛸䛺䜛఩┦ᕪ䛿 㻥㻜䁸䠈᭱ᑠ䛸䛺䜛఩┦ᕪ㻝䠊䛿䛨䜑䛻㻌䛿 㻝㻤㻜䁸䜈₞㏆䛧䛶䛔䜛䛣䛸䛜ศ䛛䜛䚹ᮏ ᐃ䛻䛚䛔䛶䜒እ㒊ᑗ᮶ⓗ䛻ᐇ⏝໬䛜ᮇᚅ䛥䜜䛶䛔䜛㉸㟁ᑟ䜿䞊䝤䝹䛿෭༷☢⏺䛜኱䛝䛟䛺䜛䛻䛴䜜䛶ᦆኻ䛜᭱኱䠈᭱ᑠ䛸䛺䜛఩┦ᕪ䛜䝁䝇䝖䜔኱㟁ὶᐜ㔞໬䛾ほⅬ䛛䜙஺ὶᦆኻపῶ䛜ᚲせ୙ྍኚ໬䛧䛶䛔䛟ഴྥ䛜⾲䜜䛶䛔䜛䛣䛸䛜ศ䛛䜛䚹Ḟ䛸䛺䜛䚹䛭䛾䛺䛛䛷䜒୕┦ྠ୍㍈䜿䞊䝤䝹䛿పᦆኻ䠈䝁䞁䝟䜽䝖䛺㟁ຊ䜿䞊䝤䝹䛸䛧䛶⌧ᅾ◊✲䛜⾜䜟䜜䛶䛔䜛㼇㻝㼉䚹䛣㻌䛾䜿䞊䝤䝹䛷䛿㏻㟁㟁ὶ䛸఩┦䛜␗䛺䛳䛯㞄䛾┦䛛䜙䛾☢
㻌⏺䛻䛥䜙䛥䜜䜛䛣䛸䛸䛺䜛䛾䛷䠈ᮏ◊✲䛷䛿䠈㉸㟁ᑟ⥺ᮦ䛻㏻㻌㟁㟁ὶ䛸఩┦䛜␗䛺䜛እ㒊☢⏺䛜༳ຍ䛥䜜䛯ሙྜ䛾஺ὶᦆ㻌ኻ䛻䛴䛔䛶䠈㟁Ẽⓗ ᐃἲ䜢⏝䛔䛶ᐇ㦂ⓗ䛻ホ౯䛧䛯䚹㻌㻌㻌㻌㻞䠊ᐇ㦂ෆᐜ㻌㻌஺ὶᦆኻ䛿㟁ὶ䜢㏻㟁䛩䜛䛣䛸䛻䜘䜛ᦆኻ䛷䛒䜛㏻㟁ᦆ㻌ኻ䛸䠈እ㒊☢⏺䛜ཎᅉ䛸䛺䛳䛶䛔䜛☢໬ᦆኻ䛾࿴䛷㏆ఝ䛩䜛䚹㻌䛭䜜䛮䜜䛾 ᐃ䛿㏻㟁ᦆኻศ䜢ᅄ➃Ꮚἲ䛷⾜䛔䠈☢໬ᦆኻ㻌ศ䜢䝢䝑䜽䜰䝑䝥䝁䜲䝹ἲ䛷⾜䛖䚹☢໬ᦆኻ ᐃ䛻䛚䛔䛶䛿䠈㻌
㏻㟁㟁ὶ䛾䜏䛻䜘䜛䝢䝑䜽䜰䝑䝥䝁䜲䝹䛛䜙䛾ฟຊᡂศ䜢䜸䝣㻌䝉䝑䝖䛸䛧䠈䛣䜜䜢㏻㟁㟁ὶ䛸እ㒊☢⏺䛜ྠ᫬䛻Ꮡᅾ䛩䜛䛸䛝㻌䛾䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾ฟຊᡂศ䛛䜙ᕪ䛧ᘬ䛔䛶☢໬ᦆኻ䛸䛧㻲㼕㼓㻚㻝㻌㻹㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㼘㼛㼟㼟㻌㼙㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼏㼕㼞㼏㼡㼕㼠㻌䛯䚹䜎䛯㏻㟁ᦆኻ ᐃ䛻䛚䛔䛶䜒ྠᵝ䛻䠈እ㒊☢⏺䛾䜏䛻䜘䜛㟁ᅽ䝍䝑䝥㛫䛾ฟຊᡂศ䜢䜸䝣䝉䝑䝖䛸䛧䛶䠈㏻㟁㟁ὶ䛸እ㻌㒊☢⏺䛜ඹ䛻Ꮡᅾ䛩䜛䛸䛝䛾ฟຊ䛛䜙ᕪ䛧ᘬ䛔䛶㏻㟁ᦆኻ䛸㻌䛧䛯䚹䛣䜜䜙䛾☢໬ᦆኻ䛸㏻㟁ᦆኻ䛾࿴䜢඲஺ὶᦆኻ䛸䛧䛯䚹㻌㻌௒ᅇ䛾 ᐃ䛻⏝䛔䛯☢໬ᦆኻ ᐃᅇ㊰䜢 㻲㼕㼓㻚䠍䛻♧䛩䚹㻌䛣䛣䛷䛿䜸䝣䝉䝑䝖䜢 ᐃ䛩䜛䛯䜑䛻䝻䝑䜽䜲䞁䜰䞁䝥䜈ධຊ㻌䛩䜛ཧ↷ಙྕ⏝䛾ᅇ㊰䜢ศ㞳䛧䛶䛔䜛䚹 ᐃ䛻⏝䛔䛯䝃䞁䝥㻌䝹䛿⮫⏺㟁ὶ್ 㻡㻣㻭䠈ᖜ 㻠㼙㼙䠈ཌ䜏 㻜㻚㻞㻠㼙㼙 䛾 㻮㼕㻙㻞㻞㻞㻟 ⥺ᮦ㻌䛷䛒䜛䚹ᐇ㝿䛾☢໬ᦆኻ ᐃ䛷䛿䠈ึ䜑䛻 㻴㼀㻿 ⥺ᮦ䜈㏻㟁㻌䛧䛭䛾᫬䛾ฟຊ䜢䜸䝣䝉䝑䝖䛸䛧䠈䛭䛾≧ែ䜈እ㒊☢⏺䜢ຍ䛘㻌䛯᫬䛾ฟຊ䛸䛾ᕪ䜢ྲྀ䜛䛣䛸䛻䜘䛳䛶ᦆኻᡂศ䛸䛧䛶䛔䜛䚹㻌㻌㻌㻌㻟䠊 ᐃ⤖ᯝ㻌㻌௨ୖ䛾 ᐃ䛻䜘䛳䛶ᚓ䜙䜜䛯☢໬ᦆኻ䛸㏻㟁ᦆኻ䛾࿴䜢㻌඲஺ὶᦆኻ䛸䛧䛶 㻲㼕㼓㻚䠎䛻♧䛩䚹ᶓ㍈䛿㏻㟁㟁ὶ䛻ᑐ䛩䜛እ㻌㒊☢⏺䛾఩┦䛾㐍䜏䛸䛧䠈⦪㍈䛿༢఩㛗䛥䛒䛯䜚䠈䠍䝃䜲䜽䝹㻲㼕㼓㻚㻞㻌㼀㼛㼠㼍㼘㻌㻭㻯㻌㼘㼛㼟㼟㻌㼢㼟㻚㻌㼜㼔㼍㼟㼑㻌㼐㼕㼒㼒㼑㼞㼑㼚㼏㼑㻌㼎㼑㼠㼣㼑㼑㼚㻌䛾඲஺ὶᦆኻ䛸䛧䛶䛔䜛䚹ᅗ୰䛷E䛿እ㒊☢⏺ Be 䜢୰ᚰ฿㐩㼑㼤㼠㼑㼞㼚㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼍㼚㼐㻌㼠㼞㼍㼚㼟㼜㼛㼞㼠㻌㼏㼡㼞㼞㼑㼚㼠㻌☢⏺ Bp 䛷つ᱁໬䛧䛯್䠈i 䛿㏻㟁㟁ὶ It 䜢⮫⏺㟁ὶ್ Ic 䛷㻌つ᱁໬䛧䛯್䛷䛒䜛䚹ᦆኻ䛿 㻝㻤㻜䁸䛾࿘ᮇ䜢䜒䛳䛶䛔䜛䛾䛷䠈㻌ึ䜑䛾㒊ศ䜢♧䛧䛯䚹ᅗ䛛䜙E䛾ቑຍ䠈䛩䛺䜟䛱䠈እ㒊☢⏺䛜㻌኱䛝䛟䛺䜛䛸䛭䜜䛻క䛳䛶ᦆኻ䜒ቑຍ䛩䜛䛣䛸䛜ศ䛛䜛䚹䛣䜜㻌䛿ḟ䛾䝡䞊䞁䝰䝕䝹䜢⏝䛔䛯ゎᯒᘧ䛾ഴྥ䛸୍⮴䛩䜛㼇㻞㼉䚹㻌㻌
Bp2
Q[bm3 (5  3 cos 2Zt1 )  bmc3{5  3 cos 2(Zt1  I0 )}
㻌
24 P0
㻌
2
ࠉࠉ
 bmbmc {4 cos I0  3 sin(Zt1  I0 )  sin(3Zt1  I0 )}㻌ࠉࠉ bmbmc2{3  cos 2I0  3 sin(Zt1  2I0 )  sin(3Zt1  2I0 )}
㻌
2
2
㻌
ࠉࠉ
 b (6  6 cos 2Zt )  bc {6  6 cos 2(Zt  I )}]
m

1

m

1

0

bm 䛸 b’m 䛿 Bp 䛷つ᱁໬䛧䛯䝇䝷䝤ᕥྑ䛭䜜䛮䜜䛾⾲㠃☢⏺䛷
䛒䜚䠈I0 䛿䝇䝷䝤ᕥྑ䛾⾲㠃☢⏺䛾఩┦ᕪ䛷䛒䜛䚹㻌䜎䛯ୖᘧ䛛䜙 Be 䛜ኚ໬䛩䜛䛸䠈ᦆኻ Q 䛜᭱኱䜎䛯䛿᭱ᑠ䛸䛺䜛఩┦ᕪ䜒ኚ໬䛩䜛䚹㻲㼕㼓㻚㻞 ୰䛻䛭䛾ഴྥ䜢◚⥺䛾▮༳䛷♧䛩䚹ヲ䛧䛟ぢ䜛䛯䜑䛻䠈㻲㼕㼓㻚㻟 䛻᭱኱䞉᭱ᑠ䛸䛺䜛఩┦ᕪ䛸እ㒊☢⏺䛾㛵ಀ䜢♧䛩䚹䛣䛣䛷䠈⦪㍈䛿ᦆኻ䛜᭱኱䠈᭱ᑠ䛸䛺䜛఩┦ᕪ䜢⾲䛧䛶䛔䜛䚹䜎䛯䠈 ᐃ䛿 㻝㻡䁸䛤䛸䛻⾜䛳䛯䛯䜑䠈ᐃ್䛻䛿㼼㻝㻡䁸䛾䜶䝷䞊䝞䞊䜢䜒䛯䛫䛯䚹䛣䛾ᅗ䜘䜚ゎᯒ⤖ᯝ㻲㼕㼓㻚㻟㻌㻱㼤㼠㼑㼞㼚㼍㼘㻌㼒㼕㼑㼘㼐㻌㼐㼑㼜㼑㼚㼐㼑㼚㼠㻌㼜㼔㼍㼟㼑㻌㼐㼕㼒㼒㼑㼞㼑㼚㼏㼑㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌㼀㻚㻌㻴㼍㼙㼍㼖㼕㼙㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻶㼛㼡㼞㼚㼍㼘㻌㼛㼒㻌㻼㼔㼥㼟㼕㼏㼟㻌㻦㻌㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻌㻿㼑㼞㼕㼑㼟㻘㻌㼂㼛㼘㻚㻌㻥㻣㻌㻔㻞㻜㻜㻤㻕㻌㼏㼛㼚㼒㼑㼞㼑㼚㼏㼑㻌㻝㻌㻞㻚㻌 㻷㻚㻌 㻭㼛㼥㼍㼓㼕㻘㻌 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 㻣㻣㻌㻔㻞㻜㻜㻣㻕㻌㼜㻚㻞㻟㻝㻌

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1A-a07

HTS 線材評価ᶓ☢ሙ୰䛾㉸㟁ᑟ⟶≧⥺ᮦ䛻䛚䛡䜛஺ὶᦆኻ㻌㻭㻯㻌㼘㼛㼟㼟㼑㼟㻌㼕㼚㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼠㼡㼎㼡㼘㼍㼞㻌㼣㼕㼞㼑㼟㻌㼕㼚㻌㼠㼞㼍㼚㼟㼢㼑㼞㼟㼑㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㼟㻌㻌㤿Ώ㻌ᗣᚨ䠄⏘⥲◊䠅㻌
MAWATARI Yasunori (AIST)
E-mail: y.mawatari@aist.go.jp㻌䛻䛾䜏䜟䛪䛛䛻౵ධ䛧䠈㉸㟁ᑟᒙ䛾እ⾲㠃䛻䛚䛡䜛☢ሙ䛿㻝䠊䛿䛨䜑䛻㻌
᭱㏆ Nexans ♫䛻䜘䜚䠈ᖹᆠ䛺㔠ᒓᇶᯈ䜢୸䛔⟶≧䛻ᡂᙧ䛧䛶㧗㉸㟁ᑟ⭷䜢స〇䛧䛯䠈㉸㟁ᑟᒙ䛜⫗ⷧ䛾୰✵෇⟄䜋䛸䜣䛹ᖹ⾜ᡂศ HT 䛾䜏䛷䠈⟶≧⥺ᮦ䛾୰✵㒊ศ䛾☢ሙ䛿䝊䝻䛷䛒䜛䠊㉸㟁ᑟᒙ䛻䛚䛡䜛㠃㟁ὶ䛿 x = ± R䛷᭱኱䛷䛒䜚䠈㉸㟁ᑟ⥺ᮦ䛜㛤Ⓨ䛥䜜䛶䛔䜛[1]䠊䛣䛾䜘䛖䛭䛾್䛿 jc d 䜘䜚ᑠ䛥䛔䠊⥺ᮦእ㒊䛾☢ሙศᕸ䛚䜘䜃⥺ᮦ䛾䛺㉸㟁ᑟ⟶≧⥺ᮦ䛻㍺㏦㟁ὶ䜢ὶ䛩ሙྜ䛾஺ὶ㏻㟁ᦆኻ☢Ẽ䝰䞊䝯䞁䝖䛿䠈ᶓ☢ሙ୰䛾୰✵䛷䛺䛔㉸㟁ᑟ෇ᰕ䛜[2]䛿䠈ᖹᆠ䛺㉸㟁ᑟ䝔䞊䝥⥺ᮦ䛾㏻㟁ᦆኻ䜘䜚䜒᱆㐪䛔䛻Meissner ≧ែ䛻䛒䜛ሙྜ䛸䜋䜌ྠ䛨䛷䠈Ha 䛻ẚ౛䛩䜛䠊䛾ᙧ≧䜢䜒䛴㧗

ᑠ䛥䛔䛣䛸䛜▱䜙䜜䛶䛔䜛䠊୍᪉䠈⟶≧⥺ᮦ䛾୰ᚰ㍈䛻ᆶ┤(ii) Ha > jc d2 䛾ሙྜ䠈x = ± R ௜㏆䛷䠈㉸㟁ᑟᒙ䛻䛚䛡䜛㠃䛺ᶓ☢ሙ䜢༳ຍ䛩䜛ሙྜ䛾㟁ὶ䞉☢ሙศᕸ䛿ᴟ䜑䛶」㞧䛷

㟁ὶ䛜ୖ㝈್ jc d 䛻㐩䛩䜛䛸䛸䜒䛻ᆶ┤☢ሙᡂศ HU 䛜⌧䜜䠈䛒䜚䠈䜎䛯䛭䛾ሙྜ䛾஺ὶᦆኻ䜒᫂䜙䛛䛷䛿䛺䛔䠊⟶≧⥺ᮦ䛾୰✵㒊ศ䜈䜒☢ሙ䛜౵ධ䛩䜛䠊䛣䛾ሙྜ䛾㟁ὶ䞉ᮏ◊✲䛷䛿䠈㉸㟁ᑟᒙ䛾ཌ䛥䛜⥺ᮦ༙ᚄ䜘䜚༑ศᑠ䛥䛔㉸㟁ᑟ⟶≧⥺ᮦ䛻ᶓ☢ሙ䜢༳ຍ䛧䛯ሙྜ䛾㟁ὶ䞉☢ሙศᕸ䛚䜘䜃஺ὶᦆኻ䛻䛴䛔䛶䠈⮫⏺≧ែ䝰䝕䝹䜢ᇶ䛻⌮ㄽゎᯒ䜢⾜䛳䛯䠊㉸㟁ᑟ⟶≧⥺ᮦ䛾ᦆኻ䛸ᖹᆠ䛺㉸㟁ᑟ䝔䞊䝥⥺ᮦ䛾ᦆኻ䛻䛴䛔䛶ẚ㍑䛧䛯䠊㻌㻞䠊㉸㟁ᑟ⟶≧⥺ᮦ㻌☢ሙศᕸ䛚䜘䜃☢Ẽ䝰䞊䝯䞁䝖䛿䛛䛺䜚」㞧䛷䠈Ha 䛻ᑐ䛧䛶㠀⥺ᙧ䛷䛒䜛䠊
㻌㻠䠊ᶓ☢ሙ୰䛾㉸㟁ᑟ⟶≧⥺ᮦ䛻䛚䛡䜛஺ὶᦆኻ㻌㉸㟁ᑟ⟶≧⥺ᮦ䛜᣺ᖜ H0 䛾ᶓ☢ሙ୰䛻䛒䜛䛸䛝䛾஺ὶᦆኻ Qtube 䛻䛴䛔䛶䜒ゎᯒⓗ䛺⾲ᘧ䛜ᚓ䜙䜜[4]䠈䛭䛾⤖ᯝ䜢
Fig. 2 䛻♧䛩䠊ẚ㍑䛾䛯䜑䠈ᖹᆠ䛺㉸㟁ᑟ䝔䞊䝥⥺ᮦ䛾ᦆኻ

Fig. 1 䛻䠈㉸㟁ᑟ⟶≧⥺ᮦ䛻䛚䛡䜛㉸㟁ᑟᒙ䛾᩿㠃ᅗ(xy㠃)䜢♧䛩䠊㉸㟁ᑟᒙ䛾ཌ䛥 d 䛿䠈⥺ᮦ༙ᚄ R 䛻ẚ䜉䛶༑ศ(ᖹ⾜☢ሙ୰䛾ᦆኻ Qtape,// 䛚䜘䜃ᆶ┤☢ሙ୰䛾ᦆኻ Qtape,A)䜒♧䛧䛯䠊 Qtube vs H0 䛾᣺⯙䛾ᴫせ䛿ḟ䛾䛸䛚䜚䛷䛒䜛䠊ᑠ䛥䛟(d << R)䠈⥺ᮦ䛿㛗ᡭ᪉ྥ(z ᪉ྥ)䛻┤⥺≧䛷↓㝈䛻㛗䛔䜒䛾䛸䛩䜛䠊䛣䛾⥺ᮦ䛻ᑐ䛧䛶䠈⥺ᮦ୰ᚰ㍈䛻ᆶ┤䛺᪉ྥ(i) 0 < H0  jc d2 䛾ሙྜ䠈Qtube 䛿 Qtape,// 䛸ྠ⛬ᗘ(1.70 ಸ)䛷䛒䜚䠈Qtape,A 䛻ẚ䜉䛶᱆㐪䛔䛻ᑠ䛥䛔䠊(y ᪉ྥ)䛻ᶓ☢ሙ Ha 䜢༳ຍ䛧䛯䛸䛝䛾㟁ὶ䞉☢ሙศᕸ䛻㛵䛧䛶䠈⮫⏺㟁ὶᐦᗘ jc 䛿୍ᐃ䛸䛩䜛⮫⏺≧ែ䝰䝕䝹䛻ᇶ䛵䛔(ii) H0 > jc d2 䛾ሙྜ䠈H0 䛜 jc d2 䜢㉸䛘䜛䛸 Qtube 䛿ᛴ⃭䛻ቑ኱䛧䠈H0 >> jc d 䛷䛿 Qtape,A 䛸ྠ⛬ᗘ(0.405 ಸ)䛻䛺䜛䠊䛶⌮ㄽゎᯒ䜢⾜䛳䛯䠊䛣䛾㉸㟁ᑟ⟶≧⥺ᮦ䛾⮫⏺㟁ὶ䛿 Ic =2S jc Rd 䛷୚䛘䜙䜜䜛䠊ᶓ☢ሙ୰䛾㉸㟁ᑟ⟶≧⥺ᮦ䛻䛚䛡䜛☢ሙศᕸ䛿䠈↓㝈䛻ᗈ䛔㉸㟁ᑟ⭷䛾㏆䛟䛻⥺≧䛾☢Ẽ཮ᴟᏊ䜢⨨䛔䛯ሙྜ䛾☢ሙศᕸ[3]䛻➼౯䛷䛒䜚䠈ᩥ⊩[3]䛾ᡭἲ䜢⏝䛔䛶ᶓ☢ሙ୰䛾㉸㟁ᑟ⟶≧⥺ᮦ䛻䛚䛡䜛㟁ὶ䞉☢ሙศᕸ䜢ゎᯒⓗ䛻ồ䜑䜛䛣䛸䛜䛷䛝䜛[4]䠊㻌㻟䠊ᶓ☢ሙ୰䛾㉸㟁ᑟ⟶≧⥺ᮦ䜈䛾☢ሙ౵ධ㻌ᮏ◊✲䛿䠈ISTEC 䜢㏻䛨䛶 NEDO 䛛䜙䛾ጤク䜢ཷ䛡䛶ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䠊㻌ཧ⪃ᩥ⊩㻌
[1] P. Odier et al., Supercond. Sci. Technol. 22 (2009) 125024.
[2] G. Vellego and P. Metra, Supercond. Sci. Technol. 8 (1995) 476.
[3] Y. Mawatari and J.R. Clem, Phys. Rev. B 74 (2006) 144523.
[4] Y. Mawatari, Phys. Rev. B, submitted.

ᶓ☢ሙ Ha 䜢䝊䝻䛛䜙䜖䛳䛟䜚༢ㄪ䛻ቑຍ䛥䛫䜛䛸䛝䠈㉸㟁ᑟ⟶≧⥺ᮦ䜈䛾☢ሙ౵ධ䛾ᵝᏊ䛿䠈ḟ䛾(i), (ii)䛾䜘䛖䛻 Ha䛜㜈್ jc d2 䜢㉸䛘䜛䛛䛹䛖䛛䛻䜘䛳䛶኱䛝䛟␗䛺䜛[4]䠊
(i) 0 < Ha  jc d2 䛾ሙྜ䠈☢ሙ䛿㉸㟁ᑟᒙ䛾እ⾲㠃௜㏆

d/R = S d/w = 10–3

Fig. 2: AC losses as functions of the field amplitude H0:
Qtube of a superconducting tubular wire in a transverse
field (solid), Qtape,A of a flat superconducting tape in aperpendicular field (dashed), and Qtape,// of a flat superconducting tape in a parallel field (chained).

Fig. 1: Cross section of a superconducting layer in asuperconducting tubular wire.

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2010年度秋季低温工学・超電導学会

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HTS 線材機械特性

㻾㻱㻝㻞㻟 ⣔⥺ᮦ䛾ᛂຊ㻌 㻙㻌 䜂䛪䜏≉ᛶ㻌 㻔㻟㻕㻌 ୙ྍ㏫᭤䛢䜂䛪䜏㻌㻿㼠㼞㼑㼟㼟㻙㼟㼠㼞㼍㼕㼚㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼚㻌㻾㻱㻝㻞㻟㻌㼣㼕㼞㼑㼟㻌㻟㻌ᒣ⏣㻌 㞝୍䠈ᒣ⏣㻌 ✨䠈኱⇃㻌 Ṋ䠄㻵㻿㼀㻱㻯䠅㻧㻌㰺⸨㻌 㝯䠄䝣䝆䜽䝷䠅㻧㻌 㟷ᮌ㻌 ⿱἞䠄᫛࿴㟁⥺䠅㻧㻌 ኱ᯇ㻌 ୍ஓ䠄ఫ཭㟁ᕤ䠅㻧㻌 ඵᮌ㻌 ṇྐ䠄ྂἙ㟁ᕤ䠅㻌㼅㻭㻹㻭㻰㻭㻌㼅㼡㼕㼏㼔㼕㻘㻌㼅㻭㻹㻭㻰㻭㻌㼅㼡㼠㼍㼗㼍㻘㻌㻻㻷㼁㻹㻭㻌㼀㼍㼗㼑㼟㼔㼕㻌㻔㻵㻿㼀㻱㻯㻕㻧㻌㻌 㻿㻭㻵㼀㻻㻌㼀㼍㼗㼍㼟㼔㼕㻌㻔㻲㼡㼖㼕㼗㼡㼞㼍㻌㻸㼠㼐㻚㻕㻧㻌㻭㻻㻷㻵㻌㼅㼡㼖㼕㻌㻔㻿㼃㻯㻯㻕㻧㻌㻻㻹㻭㼀㻿㼁㻌㻷㼍㼦㼡㼥㼍㻌㻔㻿㼡㼙㼕㼠㼛㼙㼛㻌㻱㼘㼑㼏㼠㼞㼕㼏㻕㻧㻌㼅㻭㻳㻵㻌㻹㼍㼟㼍㼟㼔㼕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㼥㼍㼙㼍㼐㼍㻙㼥㼡㼕㼏㼔㼕㻬㼕㼟㼠㼑㼏㻚㼛㼞㻚㼖㼜㻌㻞䠊ホ౯⥺ᮦ㻌㻵㻙㻼㻸㻰䠄㻵㻿㼀㻱㻯 〇䚸㻼㻸㻰㻙㻳㼐㻮㻯㻻㻛㻵㻮㻭㻰㻙㻹䡃㻻 ୰㛫ᒙ㻛䝝䝇䝔䝻䜲䠅䚸㻲㻙㻼㻸㻰㻔䝣䝆䜽䝷〇䚸㻼㻸㻰㻙㻳㼐㻮㻯㻻㻛㻵㻮㻭㻰㻙㻹䡃㻻 ୰㛫ᒙ 㻛 䝝 䝇 䝔 䝻 䜲 㻕 䚸 㻷㻙㻹㻻㻰㻔 ᫛ ࿴ 㻛 䝣 䝆 䜽 䝷 〇 䚸㼀㻲㻭㻙㻹㻻㻰㻙㼅㻮㻯㻻㻛㻵㻮㻭㻰㻙㻳㼆㻻 ୰ 㛫 ᒙ 㻛 䝝 䝇 䝔 䝻 䜲 㻕 ཬ 䜃㻿㻙㻼㻸㻰䠄ఫ཭〇䚸㻼㻸㻰㻙㻳䡀㻮㻯㻻㻛㓄ྥ㔠ᒓᇶᯈ䠅䛾 㻠 ✀㢮䛾⥺ᮦ䛸䚸䛭䜜䜙䛻 㻷㻙㻹㻻㻰 䛿ྂἙ㟁ᕤ䛻䛶䚸㻵㻙㻼㻸㻰 ཬ䜃 㻿㻙㻼㻸㻰䛿ఫ཭㟁ᕤ䛻䛶㖡䜑䛳䛝䜢᪋䛧䛯䜒䛾䜢ホ౯ᑐ㇟䛸䛧䛯䚹㻌䛔䛶䛿 㻷㻵㼀䞉㻳㼛㼘㼐㼍㼏㼗㼑㼞 ඛ⏕䚸㻺㻵㻹㻿䞉㯮⏣ඛ⏕ཬ䜃ᐩᒣ኱Ꮫ䞉➟ሙඛ⏕䛾䛤༠ຊ䜢㡬䛝䜎䛧䛯䚹䛣䛣䛻䛚♩⏦䛧ୖ䛢䜎䛩䚹㻌
1.2

99䠂Recovery 䠄୙ྍ㏫Ⅼ䠅
1

95%Retension

0.8

Ic/Ic0㻝䠊䛿䛨䜑䛻㻌
䇾䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䇿䛻䛚䛔䛶䚸ᐇ⏝⥺ᮦ䛸䛧䛶ᮇᚅ䛷䛝䜛ྛ✀䛾〇㐀䝥䝻䝉䝇䛷 㻾㻱㻝㻞㻟 ⣔⥺ᮦ䛾
㛤Ⓨ䜢⾜䛳䛶䛔䜛䚹〇㐀䝥䝻䝉䝇䛻䜘䛳䛶ணṍ㔞䛺䛹䛜␗䛺䜚䚸౑⏝ୖ㔜せ䛺᭤䛢䜂䛪䜏≉ᛶ䛜ኚ໬䛩䜛䛸⪃䛘䜙䜜䜛䚹㻌௒ᅇ䛿䚸୍⯡䛻౑⏝㝈⏺䛾┠Ᏻ䛷䛒䜛 㻵㼏 䛜 㻥㻡㻑䛻䛺䜛Ⅼ䛻ຍ䛘䛶䚸ᕳ⥺➼䛾ᶵჾ〇స䝥䝻䝉䝇䛻䛚䛡䜛᭤䛢ᡠ䛧䜢⪃៖䛧䛶୙ྍ㏫᭤䛢䜂䛪䜏䜢ホ౯䛧䛯䚹䛣䛣䛷䚸ྍ㏫䛾㝈⏺䠄୙ྍ
㏫䠅Ⅼ䛸䛧䛶᭤䛢ᡠ䛧䛷ᙜึ 㻵㼏 䛾 㻥㻥㻑䛻䛺䜛Ⅼ䛸䛧䛯䚹㻌

Bending

0.6

Bend-back
Simple Bending

0.4

0.2

㻵㼏䡚㻝㻣㻜㻭㻬㻡㼙㼙㻟䠊᭤䛢ヨ㦂᪉ἲ㻌ప ୰䛷㐃⥆ⓗ䛻᭤䛢䠄ᡠ䛧䠅䜢ຍ䛘䚸ᡤᐃ䛾ྛ䜂䛪䜏≧ែ䛻䛚䛡䜛⮫⏺㟁ὶ ᐃ䜢⾜䛖䚹䛣䛾ホ౯䛻䛿䚸䛔䜟䜖䜛䇾㻳㼛㼘㼐㼍㼏㼗㼑㼞 ᘧ䇿䛾ヨ㦂⿦⨨㼇㻝㼉䜢⏝䛔䛯䚹㻌

0
㻝㻜

㻝㻡

㻞㻜

㻞㻡

㻟㻜

㻟㻡

㻠㻜

Bending Diameter(mm)㻲㼕㼓㻚㻌㻝㻌㻮㼑㼚㼐㼕㼚㼓㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㻲㻙㻼㻸㻰㻔㼎㼍㼞㼑㻕㻌
1.2

99䠂Recovery 䠄୙ྍ㏫Ⅼ䠅1

Bending

0.6

Bend-back
Simple Bending

0.4

0.2

㻵㼏䡚㻝㻣㻜㻭㻬㻡㼙㼙㻡䠊⤖ㄽ㻌㻾㻱㻝㻞㻟 ⥺ᮦ䛻䛿ྛ✀䛾〇ἲ䛜᥇⏝䛥䜜䛶䛔䜛䛜䚸ᶵᲔⓗ≉ᛶ䛜␗䛺䜛䚹䛧䛛䛧䚸䛔䛪䜜䜒䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䝥䝻䝆䜵䜽䝖䛾୰䛷┠ᣦ䛧䛶䛔䜛ᛂ⏝ୖ䛾᭤䛢䛻ᑐ䛧䛶ၥ㢟䛿䛺䛔䛣䛸䛜☜ㄆ䛥䜜䛯䚹䜎䛯䚸ᕳ⥺᫬➼䛾᭤䛢ᡠ䛧䛻䜒ᮏ⤖ᯝ䜢ཧ⪃䛻ᕤ⛬タィ䛜ྍ⬟䛷䛒䜛䚹㻌㻢㻚㻌 ㅰ㎡㻌ᮏ◊✲䛿䚸䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛾◊✲䛸䛧䛶䚸᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ㻔㻺㻱㻰㻻㻕䛾ጤク䜢ཷ䛡䛶ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻳㼛㼘㼐㼍㼏㼗㼑㼞 ᘧヨ㦂⿦⨨䛻䛴

95%Retension

0.8

Ic/Ic0㻠䠊ホ౯⤖ᯝ㻌㻲㼕㼓㻚㻝㻌 䛻 㻲㻙㻼㻸㻰 ⥺ᮦ㻔㖡䜑䛳䛝䛺䛧㻕䛾 㻲㼕㼓㻚㻞 䛻 㻷㻙㻹㻻㻰 ⥺ᮦ䠄㖡䜑䛳䛝䛺䛧䠅䛾㉸㟁ᑟᒙ䜢እഃ䛻䛧䛶᭤䛢䛯䠄ᘬᙇ᪉ྥ䠅⤖ᯝ䜢♧䛩䚹䛣䛣䛷䚸ᡤᐃ䛾┤ᚄ䛻᭤䛢䛯≧ែ䛷䛾 㻵㼏 䜢䇾㻮㼑㼚㼐㼕㼚㼓䇿䚸䛭䜜䜢┤≧䛻ᡠ䛧䛯㝿䛾 㻵㼏 䜢䇾㻮㼑㼚㼐㻙㼎㼍㼏㼗䇿䛸䛧䛯䚹ẚ㍑䛸䛧䛶䚸┤≧䛻ᡠ䛥䛪䚸ᚎ䚻䛻᭤䛢䛯ሙྜ䛾 㻵㼏 䜢䇾㻿㼕㼙㼜㼘㼑㻌㻮㼑㼚㼐㼕㼚㼓䇿䛸䛧䛶♧䛧䛯䚹䇾㻮㼑㼚㼐㼕㼚㼓䇿䛸䇾㻿㼕㼙㼜㼘㼑㻌 㻮㼑㼚㼐㼕㼚㼓䇿䛿䜋䜌ྠᵝ䛾್䜢䛸䜚䚸㻥㻡㻑䛻䜎䛷పୗ䛩䜛Ⅼ䛸୙ྍ㏫Ⅼ䛿䜋䜌ྠ䛨䛷┤ᚄ 㻝㻡㻙㻞㻜㼙㼙 ㏆㎶䛷䛒䜛䚹㻌୍᪉䚸㉸㟁ᑟᒙ䛜ෆഃ䚸䛩䛺䜟䛱ᅽ⦰ഃ䛻᭤䛢䛯ሙྜ䚸┤ᚄ 㻝㻜㼙㼙 䛾᭤䛢䜎䛷䛷䛿 㻲㻙㻼㻸㻰 䛿పୗ䛫䛪䚸㻷㻙㻹㻻㻰 䛿⣙ 㻠㻡㻑䜎䛷ᚎ䚻䛻⮫⏺㟁ὶ䛜పୗ䛧䛯䛜䚸┤≧䛻ᡠ䛩䛸䚸䜋䜌ᙜึ䛾⮫⏺㟁ὶ䛻᚟ᖐ䛧䛯㼇㻞㼉䚹䛣䜜䜘䜚䚸㻲㻙㻼㻸㻰 ௨እ䛷䛿ᅽ⦰᪉ྥ䛷䛿୙ྍ㏫Ⅼ䛸 㻥㻡㻑⥔ᣢⅬ䛻኱䛝䛺ᕪ䛜ぢ䜙䜜䜛䚹㻌䜎䛯䚸☢ሙ୰䛷䛾᭤䛢䜂䛪䜏≉ᛶ䛿ᙜ᪥ሗ࿌䛩䜛䚹㻌

0
㻝㻜

㻝㻡

㻞㻜

㻞㻡

㻟㻜

㻟㻡

㻠㻜

Bending Diameter(mm)㻲㼕㼓㻚㻌㻞㻌㻮㼑㼚㼐㼕㼚㼓㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㻷㻙㻹㻻㻰㻔㼎㼍㼞㼑㻕㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌 㼃㻚㻌 㻳㼛㼘㼐㼍㼏㼗㼑㼞㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻞㻜㻜㻞㻌 㻭㼐㼢㻚㻌 㻯㼞㼥㼛㼓㻚㻌 㻱㼚㼓㻚㻌 㼂㼛㼘㻚㻌 㻠㻤㻌㻔㻞㻜㻜㻞㻕㻌㼜㻚㻠㻢㻥㻌㻞㻚㻌 ᒣ⏣௚䠖㻞㻜㻝㻜 ᫓Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍ㅮ₇ᴫせ㞟 㻼㻝㻠㻌

― 8 ―

第83回

2010年度秋季低温工学・超電導学会

1A-a09

HTS 線材機械特性䝁䜲䝹໬䛻ྥ䛡䛯䜲䝑䝖䝸䜴䝮⣔⥺ᮦ䛾๤㞳≉ᛶホ౯㻌㻰㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㻌㼛㼒㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼀㼑㼚㼟㼕㼘㼑㻌㼟㼠㼞㼑㼟㼟䚷㼇㻹㻼㼍㼉㻱㼘㼑㼏㼠㼞㼕㼏㻌㼒㼕㼑㼘㼐㻌㼇㼂㻛㼏㼙㼉㻌ᡞᆏ㻌 Ὀ㐀䠈ᒾ஭㻌 ㈆᠇䠈ᐑᓮ㻌 ᐶྐ䠈⏣ᓮ㻌 ㈼ྖ䠈ⰼ஭㻌 ဴ䠈ᾆ⏣㻌 ᫀ㌟䠈஭ᒸ㻌 ⱱ䠈▼஭㻌 ♸௓㻌 䠄ᮾⰪ䠅㻌㼀㻻㻿㻭㻷㻭㻌㼀㼍㼕㼦㼛䠈㻌 㻵㼃㻭㻵㻌㻿㼍㼐㼍㼚㼛㼞㼕䠈㻌 㻹㻵㼅㻭㼆㻭㻷㻵㻌㻴㼕㼞㼛㼟㼔㼕䠈㻌 㼀㻭㻿㻭㻷㻵㻌㻷㼑㼚㼖㼕㻘㻌 㻌㻴㻭㻺㻭㻵㻌㻿㼍㼠㼛㼟㼔㼕䠈㻌 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㼛㼟㼔㼕㼎㼍㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㼍㼕㼦㼛㻚㼠㼛㼟㼍㼗㼍㻬㼠㼛㼟㼔㼕㼎㼍㻚㼏㼛㻚㼖㼜㻌 㻌㻌ホ౯᪉ἲ䛾ᶆ‽໬➼䛻䛴䛔䛶䛿䚸ᴗ⏺䜢ᣲ䛢䛶䛾ᖜᗈ䛔ྲྀ㻝䠊䛿䛨䜑䛻㻌
䜚⤌䜏䛜ᮃ䜎䜜䜛䚹㻌↝ᦆ䛻⮳䜛ྍ⬟ᛶ䛜㧗䛔⇕ᭀ㉮⌧㇟䛾䜽䝷䜲䝔䝸䜰䜢ṇ㻌☜䛻ண 䛷䛝䜛䛣䛸䛿䚸㧗 ㉸㟁ᑟ䝁䜲䝹䛻䛸䛳䛶᭱䜒㔜せ䛺ㄢ㢟䛷䛒䜛㼇㻝㼉䚹䛭䛾䛯䜑䛻䛿䚸䝁䜲䝹䛾㟁ὶ㻙㟁ᅽ≉ᛶ䜢ṇ㻝㻚㻱㻙㻜㻢☜䛻ண 䛩䜛ᚲせ䛜䛒䜛䛜䚸䜲䝑䝖䝸䜴䝮⣔䠄㼅 ⣔䠅⥺ᮦ䜢⏝䛔㻱㼤㼜㼑㼞㼕㼙㼑㼚㼠㼍㼘㻌㼢㼍㼘㼡㼑㻚䛶ྵᾐ䝁䜲䝹䜢ヨస䛧䚸ᾮయ❅⣲୰䛷㟁ὶ㻙㟁ᅽ≉ᛶ䜢 ᐃ㻯㼍㼘㼏㼡㼞㼍㼠㼑㼐㻌㼢㼍㼘㼡㼑㻚㻝㻚㻱㻙㻜㻣
䛧䛯䛸䛣䜝䚸㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛻䚸⥺ᮦ䛾㉸㟁ᑟ≉ᛶ䛛䜙ண 䛥䜜䜛㟁ὶ㻙㟁ᅽ≉ᛶ䛛䜙኱䛝䛟ຎ໬䛩䜛⤖ᯝ䛜ᚓ䜙䜜䛯䚹䛣䛾ཎᅉ䛸䛧䛶䚸෭༷䛻䜘䜚䝁䜲䝹ෆ㒊䛷⥺ᮦ䛾䝔䞊䝥㠃ᆶ┤᪉㻝㻚㻱㻙㻜㻤
ྥ䛻⇕ᛂຊ䛜Ⓨ⏕䛧䚸ᶵᲔⓗ䛺◚ቯ䠄๤㞳䠅䛜㉳䛣䛳䛯䛣䛸䛜᥎ᐃ䛥䜜䛯䛯䜑䚸䛣䛾ᛂຊ䛜ᴟຊᑠ䛥䛟䛺䜛䜘䛖䛻䛧䛶䝁䜲䝹䜢
ヨస䛧䛯䛸䛣䜝䚸ィ⟬್䛸୍⮴䛩䜛㟁ὶ㻙㟁ᅽ≉ᛶ䛜ᚓ䜙䜜䜛㻝㻚㻱㻙㻜㻥
䜘䛖䛻䛺䛳䛯㼇㻞㼉䚹୍᪉䛷䚸෭༷䛻䜘䜚䝁䜲䝹ෆ㒊䛻Ⓨ⏕䛩䜛ᛂ㻝㻜㻝㻜㻜ຊ䜢ᵓ㐀ゎᯒ䛷ホ౯䛧䛯䛸䛣䜝䚸䝔䞊䝥㠃ᆶ┤᪉ྥ䛻ാ䛟ᛂ㻯㼡㼞㼞㼑㼚㼠㻌㼇㻭㼉ຊ䛿᭱኱䛷 㻝㻝㻹㻼㼍 ⛬ᗘ䛷䛒䜚䚸⥺ᮦ䝯䞊䜹䛛䜙බ⾲䛥䜜䛶䛔㻲㼕㼓㻚㻝㻌㼂㻙㻵㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㼍㼚㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌㼏㼛㼕㼘㻌䜛್䠄㻠㻜㻌 㻹㻼㼍 ௨ୖ䠅䛸኱䛝䛟஋㞳䛧䛶䛔䜛䛣䛸䛜䜟䛛䛳䛯䚹䛣䛾㻌ཎᅉ䜢✲᫂䛩䜛䛯䜑䚸ᕳ⥺䛷౑⏝䛧䛯ṧ⥺䜢⏝䛔䛶䝔䞊䝥㠃ᆶ┤᪉ྥ䛾ᛂຊ䛻䜘䜛๤㞳≉ᛶ䛾ホ౯䜢䛚䛣䛺䛳䛯䚹㻌㻭㼓㻌㻔㻞䃛㼙㻕㻌㼅㻮㻯㻻㻌㻔㻝䃛㼙㻕㻌㻌㻮㼡㼒㼒㼑㼞㻌㼟㼠㼍㼏㼗㼟㻌㻞䠊๤㞳ヨ㦂᪉ἲ㻌
ヨ㦂䛻⏝䛔䛯 㼅 ⣔⥺ᮦ䛾ᵓᡂ䜢 㻲㼕㼓㻚㻞 䛻䚸ヨ㦂ᵓᡂ䜢㻜㻚㻝㼙㼙㻌
㻿㼡㼎㼟㼠㼞㼍㼠㼑㻌㻲㼕㼓㻚㻟 䛻♧䛩䚹㼅 ⣔⥺ᮦ䛾ᇶᯈഃ䛾䝔䞊䝥㠃䜢䝧䞊䝇䛻༙⏣㻯㼡䛷ᅛᐃ䛧䚸㉸㟁ᑟᒙഃ䛾䝔䞊䝥㠃䛻༙⏣䛷䝤䝻䝑䜽䠄㻭㼚㼢㼕㼘䠅䜢㻠㼙㼙㻌ྲྀ䜚௜䛡䛯䚹䝤䝻䝑䜽䜢䝔䞊䝥㠃ᆶ┤᪉ྥ䛻ᘬ䛳ᙇ䜛䛣䛸䛷⥺ᮦ䛻๤㞳ᛂຊ䜢୚䛘䛯䚹䛺䛚䚸ヨ㦂䛿ᐊ 䛷ᐇ᪋䛧䛯䚹㻌㻲㼕㼓㻚㻞㻌㻯㼞㼛㼟㼟㻌㼟㼑㼏㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㼠㼑㼟㼠㼑㼐㻌㼅㻮㻯㻻㻌㼠㼍㼜㼑㻌㻌㻌㻟䠊ヨ㦂⤖ᯝ䛸⪃ᐹ㻌ヨ㦂⤖ᯝ䜢 㻲㼕㼓㻚㻠 䛻♧䛩䚹䝃䞁䝥䝹ᩘ䠍䠐䛷ᚓ䜙䜜䛯◚ቯ㻞㻌㼙㼙㻌 㼅㻮㻯㻻㻌㼠㼍㼜㼑㻌㻭㼚㼢㼕㼘㻌
ᛂຊ䛿䚸䜀䜙䛴䛝䛜኱䛝䛔䜒䛾䛾䚸᭱ᑠ್䛿 㻞㻢㻌 㻹㻼㼍 䛷䛒䜚䚸ᵓ㐀ゎᯒ䛷ᚓ䜙䜜䛯䝁䜲䝹ෆ㒊䛻Ⓨ⏕䛩䜛ᛂຊ 㻝㻝㻹㻼㼍 䜘䜚䜒㧗䛔್䛷䛒䜛䛣䛸䛜䜟䛛䛳䛯䚹㻌㻠㻌㼙㼙䛣䛾䜀䜙䛴䛝䛾ཎᅉ䛸䛧䛶䛿䚸 ᐃ᪉ἲ䛻㉳ᅉ䛩䜛䛣䛸䜒㻮㼍㼟㼑㻌㼜㼘㼍㼠㼑㻌⪃䛘䜙䜜䜛䛜䚸ᐇຊ䛸䛧䛶䜀䜙䛴䛝䛜䛒䜛䛸⪃䛘䜛䛸䚸䝁䜲䝹䛻㻲㼕㼓㻚㻟㻌㻯㼛㼚㼒㼕㼓㼡㼞㼍㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㼐㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㼠㼑㼟㼠㻌౑⏝䛧䛯⥺ᮦ䛾୍㒊䛷䛿䚸๤㞳ᛂຊ䛜ᑠ䛥䛔㒊ศ䛜Ꮡᅾ䛩㻌䜛ྍ⬟ᛶ䛜䛒䜛䚹䛭䛣䛷䚸㻲㼕㼓㻚㻝 䛻♧䛧䛯ྵᾐ䝁䜲䝹䛾ሙྜ䛻㻢㻜䛴䛔䛶䚸⤫ィⓗ䛺ホ౯䜢䛚䛣䛺䛳䛯䚹䝁䜲䝹䛻౑⏝䛧䛯⥺ᮦ㻡㻜䛾㛗䛥 㻞㻠㼙 䛿䚸 ᐃ䛻౑⏝䛧䛯䝤䝻䝑䜽䛾㛗䛥 㻠㻌㼙㼙 䛻ᑐ䛧䛶㻠㻜㻢㻜㻜㻜 ಸ䛾㛗䛥䛸䛺䜛䚹㻲㼕㼓㻚㻟 䛻♧䛩◚ቯᛂຊ䛜䚸䝽䜲䝤䝹ศᕸ䛻ᚑ䛳䛶䛔䜛䛸௬ᐃ䛧䚸㻢㻜㻜㻜 ᅇศ䛾ヨ㦂䜢ᐇ᪋䛧䛯䛣䛸䜢᝿㻟㻜ᐃ䛩䜛䛸᭱䜒ప䛔๤㞳ᛂຊ䛿 㻣㻌㻹㻼㼍 䛸䛺䜛䛣䛸䛜䜟䛛䛳䛯䚹㻌㻞㻜㻌㻝㻜㻠䠊䜎䛸䜑㻌㻜๤㞳ヨ㦂⤖ᯝ䜢⤫ィⓗ䛻ゎ㔘䛩䜜䜀䚸ᵓ㐀ゎᯒ䛷ᚓ䜙㻝 㻞 㻟 㻠 㻡 㻢 㻣 㻤 㻥 㻝㻜 㻝㻝 㻝㻞 㻝㻟 㻝㻠䜜䛯䝔䞊䝥㠃ᆶ┤᪉ྥ䛾ᛂຊ 㻝㻝㻹㻼㼍 䜘䜚䜒ᙅ䛔㒊఩䛜Ꮡᅾ㻿㼍㼙㼜㼘㼑㻌㻺㼛㻚䛩䜛䛣䛸䛜䚸ྵᾐ䝁䜲䝹䛾㟁ὶ㻙㟁ᅽ≉ᛶ䛜ຎ໬䛧䛯ཎᅉ䛸䛧㻲㼕㼓㻚㻠㻌㻰㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㼠㼑㼟㼠㻌㼞㼑㼟㼡㼘㼠㼟㻌䛶ㄝ᫂䛷䛝䜛ྍ⬟ᛶ䜢♧䛧䛯䚹㻌㻌௒ᅇᐇ᪋䛧䛯 㼅 ⣔⥺ᮦ䛾๤㞳ᛂຊ䛾ホ౯᪉ἲ䛿䚸ᐊ 䛷㻌ᐇ᪋䛧䛶䛔䜛䛣䛸䜔ヨ㦂᪉ἲ䛻㉳ᅉ䛩䜛䜀䜙䛴䛝䛜ホ౯䛷䛝ཧ⪃ᩥ⊩㻌䛶䛔䛺䛔➼䛾ᨵၿ䛩䜉䛝せᅉ䛜䛒䜛䜒䛾䛾䚸Ᏻᐃ䛧䛯ရ㉁䛾
㻝㻚㻌 㻴㻚㻌㻹㼕㼥㼍㼦㼍㼗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㻤㻞㻌㉸㟁ᑟ䝁䜲䝹䜢〇స䛩䜛䛯䜑䛻䛿䚸㼅 ⣔⥺ᮦ䛾๤㞳ᛂຊ䜢⤫㻔㻞㻜㻝㻜㻕㻌㼜㻚㻝㻥㻣㻌ィⓗ䛻ホ౯䛩䜉䛝䛣䛸䜢♧၀䛧䛶䛔䜛䛸⪃䛘䜛䚹㻌㻞㻚㻌 㻿㻚㻌㻵㼣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㻤㻞㻌㻔㻞㻜㻝㻜㻕㻌䜎䛯䚸๤㞳ᛂຊ䜔䛭䛾䜀䜙䛴䛝䛿䚸⥺ᮦ䛾〇ἲ䚸ᵓ㐀䚸ᮦ㼜㻚㻞㻜㻠
㉁䚸〇㐀䝻䝑䝖䛺䛹䛷ኚ䜟䜛ྍ⬟ᛶ䛜䛒䜚䚸๤㞳ᛂຊ䛾ホ౯䜔

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第83回

2010年度秋季低温工学・超電導学会

1A-a10HTS 線材機械特性ᨺᑕග䜢⏝䛔䛯 㼅 ⣔⥺ᮦ䛾ᘬᙇ䛚䜘䜃᭤䛢ෆ㒊ᐃ㻌Internal strain measurement of YBCO coated conductor using synchrotron radiationⳢ㔝ᮍ▱ኸ ி኱ ⏫ᒇಟኴ㑻 ኱ྠ኱ ᘧ⏫ᾈ஧ᖹ㔝┤ᶞ㛗ᒇ㔜ኵ㸦୰㒊㟁ຊ㸧㛗ᮧග㐀㸦ᛂ⛉◊㸧
SUGANO Michinaka (Kyoto Univ.); MACHIYA Shutaro (Daido Univ.);
SHIKIMACHI Koji, HIRANO Naoki, NAGAYA Shigeo (Chubu Electric Power); OSAMURA Kozo (RIAS)
E-mail : sugano@kuee.kyoto-u.ac.jp
㻝㻚㻌 䛿䛨䜑䛻㻌 Y ⣔⥺ᮦࡢᶵᲔⓗ≉ᛶ࡟࠾࠸࡚ࠊ᭤ࡆࡦࡎࡳ≉ᛶࡣ᭱ࡶᇶ♏ⓗ࡞ࢹ࣮ࢱࡢ୍ࡘ࡜ࡋ࡚ホ౯ࡉࢀ࡚࠸ࡿࠋᐇ㦂ⓗ࡟ࡣࠊ⥺ᮦࢆ᭤ࡆ༙ᚄ㸦R㸧࡟ኚᙧࡋࡓ≧ែ࡛⮫⏺㟁ὶ㸦Ic㸧ࡀᐃࡉࢀࡿࡀࠊ␗࡞ࡿ⥺ᮦࡢ≉ᛶࢆẚ㍑ࡍࡿࡓࡵ࡟ࡣ᭤ࡆ
༙ᚄࢆ᭤ࡆࡦࡎࡳ࡟᥮⟬ࡍࡿᚲせࡀ࠶ࡿࠋ᭤ࡆࡦࡎࡳ㸦Hb㸧ࡣࠊ୰❧㍈࠿ࡽࡢ㊥㞳㸦y㸧ࢆ⏝࠸࡚ࠊHb=y/R ࡢ㛵ಀ࠿ࡽồࡵࡽࢀࡿࠋᚑࡗ࡚ࠊྛ⥺ᮦ࡟࠾࠸࡚୰❧㍈ࡢ఩⨨ࢆỴᐃࡍࡿࡇ࡜ࡀᚲせ࡛࠶ࡿࠋ㠀ᑐ⛠࡞✚ᒙᵓ㐀ࢆ᭷ࡍࡿ Y ⣔⥺ᮦ࡟࠾࠸࡚ࡣࠊ୰❧㍈ࡣᇶᯈࡢ୰ᚰ࡟ࡣ఩⨨ࡋ࡚࠸࡞࠸ࠋ
ࡲࡓࠊ඲࡚ࡢᵓᡂせ⣲ࡀᙎᛶኚᙧ≧ែࡢ࡜ࡁ࡟ࡣࠊ୰❧㍈ࡢ఩⨨ࡣ୍ᐃ࡛࠶ࡿࡀࠊᵓᡂせ⣲ࡢ୍㒊࡛ረᛶኚᙧࡀ㉳ࡇࡿ࡜୰❧㍈ࡢ఩⨨ࡣ᭤ࡆ༙ᚄ࡟౫Ꮡࡋ࡚⛣ືࡍࡿࠋᚑࡗ࡚ࠊᵓᡂせ⣲ࡢᛂຊ—ࡦࡎࡳ㛵ಀࢆ⪃៖ࡋࡓ୰❧㍈఩⨨ࡢỴᐃ᪉ἲࢆ☜❧ࡍࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋᮏ◊✲࡛ࡣࠊY ⣔⥺ᮦ࡟᭤ࡆኚᙧࢆ୚࠼ࡓ≧ែ࡛ YBCO ⭷ࡢෆ㒊ࡦࡎࡳࢆᨺ
ᑕග࡛ᐇ ࡋࡓࠋࡲࡓረᛶኚᙧࢆ⪃៖ࡋࡓᛂຊ—ࡦࡎࡳ㛵ಀ࡟ᇶ࡙ࡃᛂຊࡢࡘࡾྜ࠸᮲௳࠿ࡽ␗࡞ࡿ⥺ᮦᵓ㐀ࢆ᭷ࡍࡿ Y ⣔⥺ᮦࡢ୰❧㍈఩⨨ࢆᩘ್ィ⟬࡟ࡼࡾỴᐃࡋࠊࡇࢀ࡟ࡼࡗ࡚ồࡵࡓ᭤ࡆࡦࡎࡳ࡜ᐇ ್ࢆẚ㍑ࡋࡓࠋ㻞㻚㻌 ᐇ㦂᪉ἲ㻌㻌 Cu Ᏻᐃ໬ᒙࡢ᭷↓ࡢ㐪࠸࡟ࡼࡿ 2 ✀㢮ࡢ Y ⣔⥺ᮦࢆ⏝࠸ ࡓ ࠋ ࠸ ࡎ ࢀ ࡶ ࠊ Ag(10 Pm)/YBCO(1 Pm)/CeO2(0.4Pm)/Gd2Zr2O7(1 Pm)/Hastelloy(100 Pm)࡜࠸࠺ᵓ㐀ࡣඹ㏻࡛
࠶ࡾࠊCu 」ྜ໬⥺ᮦ࡛ࡣཌࡉ 100 Pm ࡢ Cu ࢸ࣮ࣉࡀ Ag
ഃ࡟ࣁࣥࢲ௜ࡅࡉࢀ࡚࠸ࡿࠋ ኱ᆺᨺᑕග᪋タ SPring-8 ࡟࠾࠸࡚ࠊY ⣔⥺ᮦ࡟୍㍈ᘬᙇࡲࡓࡣ᭤ࡆኚᙧࢆ୚࠼ࡓ≧ែ࡛ YBCO ⭷ࡢෆ㒊ࡦࡎࡳࢆᐃࡋࡓࠋ࠸ࡎࢀࡢ ᐃ࡟࠾࠸࡚ࡶࠊ㏱㐣㓄⨨࡟ࡼࡗ࡚㈇Ⲵ᪉ྥ࡜ᖹ⾜࡞⥺ᮦ㛗ࡉ᪉ྥࡢ b ㍈ࡢ᱁Ꮚᐃᩘ࠿ࡽࠊෆ㒊ࡦࡎࡳࢆ┤᥋ ᐃࡋࡓࠋࡲࡓࠊIc ࡢᘬᙇࠊ᭤ࡆࡦࡎࡳ౫Ꮡ
ᛶࢆ 77 Kࠊ⮬ᕫ☢ሙ࡛ ᐃࡋࡓࠋ᭤ࡆࡦࡎࡳ ᐃ࡟ࡣࠊGoldacker ᆺࡢ᭤ࡆ⿦⨨㸦᭱ᑠ᭤ࡆᚄ 6 mm㸧ࢆ⏝࠸ࠊᾮయ❅⣲୰࡛㐃⥆ⓗ࡟᭤ࡆ༙ᚄࢆኚ໬ࡉࡏࡓࠋ㻟㻚㻌 ⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻌 ୰❧㍈ࡢ఩⨨ࡣ௨ୗࡢィ⟬࡟ࡼࡾ᥎ᐃࡋࡓࠋᵓᡂせ⣲ࢆ
ཌࡉ 0.1 Pm ࡢせ⣲࡟ศ๭ࡋࠊせ⣲ෆ࡛ࡢࡦࡎࡳࡣ୍ᐃ࡜
ࡍࡿࠋ୍ᐃࡢ R ࡟ࡘ࠸࡚ࠊ୰❧㍈ࢆ࠶ࡿ఩⨨࡟௬ᐃࡋࠊྛせ⣲࡟࠾ࡅࡿ᭤ࡆࡦࡎࡳࢆィ⟬ࡍࡿࠋᐇ㦂ࡲࡓࡣᩥ⊩್࡟ࡼࡿᵓᡂせ⣲ࡢᛂຊ—ࡦࡎࡳ᭤⥺࠿ࡽྛせ⣲࡛ࡢᛂຊࡀồࡵࡽࢀࠊࡇࢀࡽࢆ᩿㠃඲య࡟ࢃࡓࡗ࡚㊊ࡋྜࢃࡏࡿࠋ
ࡇࡇ࡛ࡣࠊయ✚ศ⋡ࡀ኱ࡁࡃࠊ୰❧㍈఩⨨࡟୚࠼ࡿᙳ㡪ࡀ኱ࡁ࠸ Hastelloy ࡜ Cu ࡟㛵ࡋ࡚ࠊ㠀⥺ᙧ࡞ຍᕤ◳໬ࢆ⪃៖ࡋࡓࠋࡇࡢィ⟬ࢆ୰❧㍈఩⨨ࢆ Hastelloy ᇶᯈෆ࡛⛣ືࡉࡏ࡞ࡀࡽ⧞ࡾ㏉ࡋࠊᛂຊࡢࡘࡾྜ࠸ࡀᡂࡾ❧ࡘ᮲௳࠿ࡽ୰
❧㍈఩⨨ࢆỴᐃࡋࡓࠋࡇࡢᡭ㡰ࢆ R ࢆኚ໬ࡉࡏ࡞ࡀࡽ⧞
ࡾ㏉ࡋ࡚ R ࡟౫Ꮡࡋࡓ୰❧㍈఩⨨ࢆỴᐃࡋࡓࠋ Fig. 1 ࡟ᨺᑕග࡟ࡼࡾᐇ ࡋࡓෆ㒊ࡦࡎࡳࡢኚ໬࡜ィ⟬್ࡢẚ㍑ࢆ♧ࡍࠋᐇ ್࡜ィ⟬್ࡀᴫࡡ୍⮴ࡋ࡚࠸ࡿࡇ࡜

Fig. 1 Comparison between measured and calculated bendingstrain.

Fig. 2 Ic as a function of bending strain for coated conductors
with and without Cu stabilizing layer.
ࡀࢃ࠿ࡿࠋ⥺ᮦ୰ࡢ㉸ఏᑟయࡢ᭤ࡆࡦࡎࡳࢆ┤᥋ ᐃࡋࡓࡢࡣᮏ⤖ᯝࡀึࡵ࡚ࡢ౛࡛࠶ࡾࠊᐇ ್࡜ࡢẚ㍑࡟ࡼࡾᮏィ⟬ᡭἲࡢጇᙜᛶࡀ☜ㄆࡉࢀࡓࠋ
 2 ✀㢮ࡢ⥺ᮦ࡟ࡘ࠸࡚ Ic ࡢ᭤ࡆ༙ᚄࡢ㏫ᩘ࡟ᑐࡍࡿ౫Ꮡ
ᛶࢆẚ㍑ࡍࡿ࡜ࠊ࠸ࡎࢀࡶᨺ≀⥺ⓗ࡞᣺ࡿ⯙࠸࡛ࡣ࠶ࡿࡀࠊ
Cu 」ྜ໬ YBCO ⥺ᮦࡢ᪉ࡀ⦆ࡸ࠿࡞ኚ໬ࢆ♧ࡋࡓࠋ๓㏙
࡜ྠᵝࡢᡭἲ࡛ 77 K ࡢᛂຊ—ࡦࡎࡳ㛵ಀࢆ⏝࠸ࡿ࡜ࠊIcࢆ ᐃࡋࡓ R ࡟ᑐᛂࡋࡓ୰❧㍈఩⨨࠾ࡼࡧ YBCO ࡢ᭤ࡆࡦࡎࡳࢆồࡵࡿࡇ࡜ࡀ࡛ࡁࡿࠋࡇࢀࢆࡉࡽ࡟ Ic ࡢ᭱኱್࡛つ᱁໬ࡋࡓ⤖ᯝࢆ Fig. 2 ࡟♧ࡍࠋIc ࡢ᭤ࡆࡦࡎࡳ౫Ꮡᛶࡀ
㠀ᖖ࡟Ⰻࡃ୍⮴ࡋ࡚࠾ࡾࠊ᭤ࡆኚᙧࡢ㏫ᩘ࡟ᑐࡋ࡚ࣉࣟࢵ
ࢺࡋࡓ࡜ࡁࡢᕪࡣࠊ⥺ᮦᵓ㐀࡟㉳ᅉࡍࡿ୰❧㍈఩⨨ࡢ㐪࠸࡟ࡼࡿࡶࡢ࡛࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ ௨ୖࡢ⤖ᯝ࠿ࡽࠊY ⣔⥺ᮦ࡟࠾࠸࡚᭤ࡆࡦࡎࡳࢆồࡵࡿᡭἲࢆ☜❧ࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋㅰ㎡㻌
 ᮏ◊✲ࡣࠊNEDO ࡢጤク஦ᴗࠕ࢖ࢵࢺ࣒ࣜ࢘⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨࠖࡢ୍⎔࡜ࡋ࡚ᐇ᪋ࡋࡓࡶࡢ࡛࠶ࡿࠋ

― 10 ―

第83回

2010年度秋季低温工学・超電導学会

1A-a11HTS 線材機械特性

㻾㻱㻮㼍㻞㻯㼡㻟㻻㼥 䝁䞊䝖⥺ᮦ䛾⮫⏺㟁ὶ䛻ᑐ䛩䜛ṍຠᯝ䛻䛚䛡䜛ᗘ䞉☢ሙ䛾ᙳ㡪㻌

Influence of temperature and magnetic field on strain effect for critical current of
REBa2Cu3Oy coated conductorᓟᓊ㻌 ୍༤䠈ᑠ㯮㻌 ⱥಇ䠈ῐ㊰㻌 ᬛ䠈Ώ㎶㻌 ࿴㞝䠄ᮾ໭኱䠅䠗すᓥ㻌 ඖ䠄NIMS䠅;࿴Ἠ㻌 ㍤㑻䠈ሷཎ㻌 ⼥(ISTEC);஭ୖ㻌 ⮳䠈ᆏᮏ㻌 ஂᶞ䠈ᏳỌ㻌 ⤀ஓ䠈๽㻌 ວ㻔ྂἙ㟁ᕤ㻕㻌
MINEGISHI Kazuhiro, OGURO Hidetoshi, AWAJI Satoshi, WATANABE Kazuo (Tohoku Univ.); NISHIJIMA Gen (NIMS);IZUMI Teruo, SHIOHARA Yuh (ISTEC); INOUE Itaru, SAKAMOTO Hisaki, YASUNAGA Shinnya, RYU Jinn (Furukawa Electric)
E-mail: kazuhiro_m@imr.tohoku.ac.jp㻌㻝䠊䛿䛨䜑䛻㻌

Table 1 Specification of REBCO coated conductor.
㧗 ㉸ఏᑟయ REBa2Cu3Oy(REBCO䚸RE 䛿 Y 䜎䛯䛿ᕼᅵ㢮ඖ⣲)䜢㉸ఏᑟᒙ䛻⏝䛔䛯 REBCO 䝁䞊䝖⥺ᮦ䛿䚸☢ሙ୰
GdBCO coated conductormaterial
thickness䛷䛾㧗䛔⮫⏺㟁ὶᐦᗘ(Jc)≉ᛶ䜢ᣢ䛴䚹䜎䛯䚸Hastelloy 䛺䛹StabilizerAg
10 Pm㧗ᙉᗘᮦᩱ䛜ᇶᯈ䛸䛧䛶⏝䛔䜙䜜䛶䛔䜛䛯䜑䚸㧗䛔⪏ᛂຊ≉Superconducting
PLDᛶ䜢ᣢ䛳䛶䛔䜛䚹
1.2 Pmlayer
GdBCOᙉ☢ሙ㉸ఏᑟ䝬䜾䝛䝑䝖䜈䛾ᛂ⏝䛻䛚䛔䛶䛿䚸☢ሙ୰䛷
CeO2
0.5 Pm⥺ᮦ䛻኱㟁ὶ䜢㏻㟁䛩䜛ᚲせ䛜䛒䜚䚸䛭䛾㝿Ⓨ⏕䛩䜛㟁☢ຊ
LaMnO
19 nm
3
䛻䜘䜚⥺ᮦ䛻ᘬᙇ䜚ṍ䛜ຍ䜟䜛䚹䛣䛾䛯䜑䚸REBCO 䝁䞊䝖⥺ᮦ
Buffer
IBAD-MgO
4 nm
䛾 Ic 䛻ཬ䜌䛩ᘬᙇ䜚ṍ䛾ຠᯝ䜢ㄪ䜉䜛䛣䛸䛜ᚲせ䛸䛺䜛䚹≉䛻䚸
GZO
110 nm䝬䜾䝛䝑䝖ᛂ⏝䛻䛚䛔䛶䛿☢ሙ୰䛷䛾 Ic 䛾ṍ౫Ꮡᛶ䛜㔜せ䛸
Substrate
Hastelloy
100 Pm䛺䜛䛜䚸☢ሙ䛜䚸REBCO 䝁䞊䝖⥺ᮦ䛾 Ic 䛻ᑐ䛩䜛ṍຠᯝ䛻ཬ
YBCO coated conductor䜌䛩ᙳ㡪䛻䛴䛔䛶䛿䚸༑ศ䛻᫂䜙䛛䛻䛺䛳䛶䛔䛺䛔䚹䜎䛯䚸
material
thicknessᙉ☢ሙ䝬䜾䝛䝑䝖ᛂ⏝䛻䛚䛔䛶䛿䚸ᾮయ He ᗘ 4.2 K 䛻䛚䛡Cu
19 Pm䜛ṍຠᯝ䛻䛴䛔䛶ㄪ䜉䜛䛣䛸䛜ᚲせ䛸䛺䜛䚹StabilizerAg
16 Pmᮏ◊✲䛷䛿 77 K䚸䛚䜘䜃 4.2 K 䛻䛚䛔䛶䚸☢ሙ୰䛷Superconducting
CVDREBCO 䝁䞊䝖⥺ᮦ䛾 Ic 䛾ᘬᙇ䜚ṍ౫Ꮡᛶ䜢 ᐃ䛧䚸Ic 䛻ᑐ䛩
1 Pm
layer
YBCO
䜛ṍຠᯝ䛻 ᗘ䛸☢ሙ䛜ཬ䜌䛩ᙳ㡪䛻䛴䛔䛶ㄪ䜉䛯䚹
CeO2
0.2 PmBuffer㻞䠊ヨᩱㅖඖ䛚䜘䜃ᐇ㦂᪉ἲ㻌
IBAD-GZO
0.5 Pmヨᩱ⥺ᮦ䛾ㅖඖ䜢 Table 1 䛻♧䛩䚹ヨᩱ䛻䛿 PLD(Pulse
Substrate
Hastelloy
100 PmLaser Deposition) ἲ 䛻 䜘 䛳 䛶 ㉸ ఏ ᑟ ᒙ 䛜 స 〇 䛥 䜜 䛯
GdBa2Cu3Oy(GdBCO) ⥺ ᮦ 䛚 䜘 䜃 CVD(Chemical Vapor
Deposition) ἲ 䛻 䜘 䛳 䛶 ㉸ ఏ ᑟ ᒙ 䛜 స 〇 䛥 䜜 䛯
YBa2Cu3Oy(YBCO)⥺ᮦ䜢⏝䛔䛯䚹䛔䛪䜜䛾ヨᩱ䜒䝝䝇䝔䝻䜲ᇶᯈ䜢⏝䛔䚸ヨᩱᖜ䛿 2 mm 䛷䛒䜛䚹Ic 䛾ᘬᙇ䜚ṍ౫Ꮡᛶ䛾 ᐃ䛿䚸䜹䝮᪉ᘧ䛻䜘䛳䛶⥺ᮦ䛻ᘬᙇ䜚ṍ䜢ຍ䛘䜛⿦⨨䜢⏝䛔䛶⾜䛳䛯䚹ヨᩱ⥺ᮦ䛾୧➃䜢䛭䜜䛮䜜ᅛᐃഃ䛸ྍືഃ䛾 2 䛴䛾㟁ᴟ䛻䝝䞁䝎௜䛡䛧䚸ྍືഃ㟁ᴟ䜢⛣ື䛥䛫䜛䛣䛸䛻䜘䜚ᘬᙇ䜚ຊ䜢༳ຍ䛩䜛䚹ヨᩱ䛾ྥ䛝䜢ኚ䛘䜛䛣䛸䛻䜘䜚䚸༳ຍ☢ሙ䛾᪉ྥ䛜⭷㠃䛻ᆶ┤䛺ሙྜ䛸⭷㠃䛻ᖹ⾜䛺ሙྜ䛾୧᪉䛷 ᐃ䛷䛝䜛䚹㻌
77 K(ᾮయ N2 ᾐₕ෭༷)䛚䜘䜃 4.2 K(ᾮయ He ᾐₕ෭༷)䚸
☢ሙ୰䛻䛚䛔䛶䚸ヨᩱ⥺ᮦ䛻ᘬᙇ䜚ຊ䜢༳ຍ䛧䛺䛜䜙 Ic䚸ᘬᙇ䜚ṍ䚸ᘬᙇ䜚ᛂຊ䜢 ᐃ䛧䛯䚹㟁ᅽ➃Ꮚ㛫㊥㞳䛿 10 mm䚸IcỴᐃ䛾㟁⏺ᇶ‽䛿 1 PV/cm 䛷䛒䜛䚹⥺ᮦ⾲㠃䛻᥋╔䛧䛯ṍ䝀䞊䝆䛻䜘䜚䚸⥺ᮦ䛻ຍ䜟䜛ṍ䜢 ᐃ䛧䛯䚹㻟䠊ᐇ㦂⤖ᯝ㻌Fig.1䛻GdBCO⥺ᮦ䚸䛚䜘䜃YBCO⥺ᮦ䛾77 K䚸B 䍺 3 T
䛻䛚䛡䜛Ic䛾ᘬᙇ䜚ṍ౫Ꮡᛶ䜢♧䛩䚹Ic䛾್䛿ᘬᙇ䜚ṍ䜢ຍ䛘䛺䛔≧ែ䛷䛾Ic(Ic0)䛷つ᱁໬䛧䛶䛔䜛䚹☢ሙ᪉ྥ䛿⭷㠃䛻ᆶ┤᪉ྥ䛷䛒䜛䚹
GdBCO⥺ᮦ䛻䛚䛔䛶䛿ᘬᙇ䜚ṍ0.40%䚸YBCO⥺ᮦ䛻䛚䛔䛶䛿ᘬᙇ䜚ṍ0.50%䜎䛷䛾Icኚ໬䛿ྍ㏫ኚ໬䛷䛒䜛䚹
YBCO⥺ᮦ䛻䛴䛔䛶䛿䚸B 䍺 0.3 T䛻䛚䛔䛶䚸ᘬᙇ䜚ṍ䜢ຍ 䛘 䜛 䛣 䛸 䛻 䜘 䜚 Ic 䛜 ྥ ୖ 䛩 䜛 䝢 䞊 䜽 ຠ ᯝ 䛜 ぢ 䜙 䜜 䛯 䛜 䚸
GdBCO⥺ᮦ䛷䛿䛣䛾䜘䛖䛺ຠᯝ䛿ぢ䜙䜜䛺䛛䛳䛯䚹2䛴䛾ヨᩱ䛿䛸䜒䛻Hastelloyᇶᯈ䜢⏝䛔䛶䛚䜚䚸⇕཰⦰䛻䜘䜛ṧ␃ṍ䛻኱䛝䛺㐪䛔䛿䛺䛔䛸⪃䛘䜙䜜䜛䛜 䚸䝢䞊䜽఩⨨䛻ᕪ䛜⌧䜜䛯䚹ඛ⾜◊✲䛷䜒䚸PLDἲ䛻䜘䜚స〇䛥䜜䛯ヨᩱ䛷䛿䚸☢ሙ༳
Fig.1 Tensile strain dependence of normalized critical currentຍ䛻䜘䜚䝢䞊䜽ຠᯝ䛜⌧䜜䛯౛䛿ሗ࿌䛥䜜䛶䛔䛺䛔䚹for GdBCO and YBCO coated conductor at 77 K.
ᙜ᪥䛿䚸4.2 K䛷䛾⤖ᯝ䜒ྜ䜟䛫䛶㆟ㄽ䛩䜛䚹― 11 ―

第83回

2010年度秋季低温工学・超電導学会

1A-a12HTS 線材機械特性

㻳㼐 ⣔ 㻝㻞㻟 㓟໬≀㉸㟁ᑟ䝞䝹䜽య䛾⦓ᐦ໬䛸ᶵᲔⓗ≉ᛶ䛻ཬ䜌䛩ᙳ㡪ᅉᏊ㻰㼑㼚㼟㼕㼒㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㻳㼐㻝㻞㻟㻌㼛㼤㼕㼐㼑㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼎㼡㼘㼗㼟㻌㼍㼚㼐㻌㼕㼚㼒㼘㼡㼑㼚㼠㼕㼍㼘㻌㼒㼍㼏㼠㼛㼞㼟㻌㼛㼚㻌㼙㼑㼏㼔㼍㼚㼕㼏㼍㼘㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌⸨ᮏ ᾈஅ 䠄㕲㐨⥲◊䠅 䠗 ᮧୖ ᫂ 㻔ᘯ๓኱㻕 䠗 ᡭᔱ ⱥ୍㻘 ᳃⏣ ඘ 䠄᪂᪥㚩䠅㻌㻲㼁㻶㻵㻹㻻㼀㻻㻌㻴㼕㼞㼛㼥㼡㼗㼕㻌㻔㻾㼍㼕㼘㼣㼍㼥㻌㼀㼑㼏㼔㼚㼕㼏㼍㼘㻌㻾㼑㼟㼑㼍㼞㼏㼔㻌㻵㼚㼟㼠㼕㼠㼡㼠㼑㻕㻧㻌㻹㼁㻾㻭㻷㻭㻹㻵㻌㻭㼗㼕㼞㼍㻌㻔㻴㼕㼞㼛㼟㼍㼗㼕㻌㼁㼚㼕㼢㻚㻕㻧㼀㻱㻿㻴㻵㻹㻭㻌㻴㼕㼐㼑㼗㼍㼦㼡㻘㻌㻹㻻㻾㻵㼀㻭㻌㻹㼕㼠㼟㼡㼞㼡㻌㻔㻺㼕㼜㼜㼛㼚㻌㻿㼠㼑㼑㼘㻌㻯㼛㼞㼜㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼒㼡㼖㼕㼙㼛㼠㼛㻬㼞㼠㼞㼕㻚㼛㼞㻚㼖㼜㻌 㻌

200ȣm

200ȣm

120
100
80
60

30

MPa

40
Ag particle size (Ǎm)

50

Bending strength

Bending strength(a) standard top area(b) densified top area
Fig.1 Optical micrograph of the Gd123 Bulk; ȭ30 mm, standard
and densified bulks; annealed.
140
120
100
80
60

MPa

30

40
50
Ag particle size (Ǎm)60(a) standard(b) densified
Fig. 2.1 Ag size dependence of bending strength at 77 K

100
80
60
3

MPa

5
7
Ag area ratio (%)

9

Bending strength

Bending strengthin Gd123 bulks. Ŷ Anneal 䕺 As-grown
140
120
100
80
60
3

MPa

5
7
Ag area ratio (%)9(a) standard(b) densified
Fig. 2.2 Ag area dependence of bending strength at 77 K

100
80
60

MPa

80

100
Pore size (Ǎm)

Bending strengthin Gd123 bulks. Ŷ Anneal 䕺 As-grown
Bending strength㻝䠊䛿䛨䜑䛻㻌
ᾮయ❅⣲ ᗘ䛷䜒㧗䛔⮫⏺㟁ὶᐦᗘ䚸ᙉ䛔ᤕᤊ☢⏺䚸䛥䜙䛻ᙉ䛔☢Ẽᾋୖຊ䜢᭷䛩䜛ᕼᅵ㢮⣔㓟໬≀㧗 ㉸㟁ᑟ䝞䝹䜽ᮦ䛿䚸ᑗ᮶䛾㉸㟁ᑟᛂ⏝ᶵჾ䛜ᮇᚅ䛥䜜䛶䛔䜛䚹䝞䝹䜽㉸㟁ᑟᛂ⏝ᶵჾ䛾ᐇ⏝໬䛾䛯䜑䛻䛿䚸㟁☢Ẽⓗ≉ᛶ䛿䜒䛸䜘䜚䚸ᶵᲔⓗ≉ᛶ䛾ᢕᥱ䛸䛭䛾ྥୖ䛜㠀ᖖ䛻㔜せ䛷䛒䜛䚹㻌୍⯡䛻䚸ᕼᅵ㢮⣔㉸㟁ᑟ䝞䝹䜽ᮦ䛿኱Ẽ୰䛷䛾⁐⼥ἲ䛷స〇䛥䜜䜛䛜㼇㻝㼉䚸䝥䝻䝉䝇䛻㉳ᅉ䛧䛶䝞䝹䜽యෆ㒊䛻ẼᏍ䛜Ꮡᅾ䛩䜛䚹ẼᏍ䛿Ḟ㝗䛷䛒䜚䚸ᶵᲔⓗᙉᗘ䜔ಙ㢗ᛶྥୖ䛾䛯䜑䛻䛿䚸ఱ䜙䛛䛾ᑐ⟇䛜ᚲせ䛷䛒䜛䚹ᮦᩱస〇䝥䝻䝉䝇䛾ほⅬ䛛䜙䛿䚸౛䛘䜀䚸ẼᏍᐦᗘ䛾పῶ䛜⪃䛘䜙䜜䜛䚹᭱㏆䚸㓟⣲୰⁐⼥䛻䜘䛳䛶 㻿㼙 ⣔䚸㻰㼥 ⣔䜔 㻳㼐 ⣔䛾ẼᏍᐦᗘ䜢ῶᑡ䛥䛫䚸ᶵᲔⓗᙉᗘ䛜ᨵၿ䛩䜛䛣䛸䛜ሗ࿌䛥䜜䛶䛔䜛䚹㼇㻞㻘㻟㻘㻠㼉ᡃ䚻䛿䚸䛣䜜䜎䛷䛻䚸ẼᏍᐦᗘ䛜ప䛔㖟ῧຍ 㻳㼐 ⣔䝞䝹䜽య䠄┤ᚄ 㻟㻜㼙㼙 ཬ䜃 㻠㻢㼙㼙䠅䜢స〇䛧䚸ᚑ᮶䠄ᶆ‽䠅ᮦ䛸ẚ㍑䛧
䛯⦓ᐦ໬䛾ຠᯝ䜢䚸ᶵᲔⓗ≉ᛶ䠄᭤䛢ᙉᗘ䚸䝲䞁䜾⋡䛺䛹䠅䛾
ほⅬ䛛䜙ሗ࿌䛧䛶䛝䛯㼇㻡㼉䚹䛣䛣䛷䛿䚸ྠ䝞䝹䜽య䛾ᶵᲔⓗ≉ᛶホ౯⤖ᯝ䛻ཬ䜌䛩ᙳ㡪ᅉᏊ䛻䛴䛔䛶䚸≉䛻ᚤ⣽⤌⧊䠄ẼᏍ䜔㖟⢏Ꮚ䛺䛹䛾ศᕸ≧ἣ䠅䛾ᙳ㡪䜢᳨ウ䛧䛯⤖ᯝ䜢ሗ࿌䛩䜛䚹㻞䠊㻳㼐㻌㻙㻝㻞㻟 䛾స〇᪉ἲ䛸≉ᛶホ౯㻌ᮏ◊✲䛷ホ౯䛧䛯 㻳㼐 ⣔䝞䝹䜽ᮦ䛿䚸㻳㼐㻝㻞㻟 ┦䠖㻳㼐㻞㻝㻝 ┦䠙㻟䠖㻝 䛾⤌ᡂẚ䛻 㻜㻚㻡㼣㼠㻑䛾 㻼㼠 䛸 㻝㻜㼣㼠㻑䛾 㻭㼓㻞㻻 䜢ῧຍ䛧䛯ཎᩱ⢊䜢⏝䛔䚸ヨᩱෆ㒊䛾ẼᏍᐦᗘ䜢పῶ䛥䛫䜛䛯䜑㓟⣲୰䛷⁐⼥䛥䛫䛯ᚋ䚸኱Ẽ୰䛷⤖ᬗᡂ㛗䛥䛫䜛䛸䛔䛖஧ẁ㝵㞺ᅖẼ ㄪ ᩚ ⇕ ฎ ⌮ ἲ 䛻 䛶 స 〇 䛧 䛯 䚹 䛭 䛾 ⤖ ᯝ 䚸 ┤ ᚄ㻌㻟㻜㼙㼙㼪㻠㻢㼙㼙䚸ཌ䛥 㻝㻡㼙㼙 ⛬ᗘ䛾㉸㟁ᑟ䝞䝹䜽య䜢ᚓ䛯㼇㻡㼉䚹䛣䛣䛷䛿䚸஧ẁ㝵㞺ᅖẼㄪᩚ⇕ฎ⌮ἲ䛻䛶స〇䛧䛯䜒䛾䜢⦓ᐦᮦ䠄㻰㼑㼚㼟㼕㼒㼕㼑㼐䠅䚸ẚ㍑䛾䛯䜑඲䛶኱Ẽ୰䛷స〇䛧䛯䜒䛾䜢ᶆ‽ᮦ䠄㻿㼠㼍㼚㼐㼍㼞㼐䠅䛸࿧䜆䚹㻌ᮏ◊✲䛷䛾 㻳㼐 ⣔䝞䝹䜽ᮦ䛾ᶵᲔⓗ≉ᛶホ౯䛿䚸䝣䜯䜲䞁䝉䝷䝭䝑䜽䝇䛾ヨ㦂ホ౯᪉ἲ䜢ཧ⪃䛻ᅄⅬ᭤䛢ヨ㦂䜢 㻣㻣䠧䛷ᐇ᪋䛧䛯䚹ヨ㦂∦䛿䚸෇ᰕ≧䝞䝹䜽య䜢ୖ୰ୗ䛾୕ẁ௨ୖ䛻䝇䝷䜲䝇䛧䚸୺䛻 㻶㻵㻿㻌㻾㻌㻝㻢㻜㻝䠄᭤䛢ᙉᗘヨ㦂䠅䛻ᇶ䛵䛔䛯ᑍἲ䞉ᙧ≧䠄㻞㻚㻤㽢㻞㻚㻝㽢㻞㻡㻌 㼙㼙㻟䠅䛻ษ᩿䞉◊๐ຍᕤ䛧䛶ᚓ䛯䚹䛭䛧䛶ヨ㦂∦䛾⾲㠃䜢䝷䝑䝢䞁䜾䝣䜱䝹䝮䛺䛹䛷㙾㠃௙ୖ䛢䛧䛶䚸ගᏛ㢧ᚤ㙾䚸䝺䞊䝄㢧ᚤ㙾䛻䜘䜚⤌⧊䜢ほᐹ䛧䚸ẼᏍ⋡䚸㖟ศᕸ䚸㻞㻝㻝 ┦ศᕸ䜢 ᐃ䛧䛯䚹㻌㻟䠊㻳㼐㻌㻙㻝㻞㻟 䛾ᶵᲔⓗ≉ᛶ➼ホ౯⤖ᯝ㻌ᅗ 㻝 䛻䚸ᶆ‽ᮦ䛸⦓ᐦᮦ䛾㓟⣲䜰䝙䞊䝹ᚋヨ㦂∦⾲㠃䛾ගᏛ㢧ᚤ㙾䛻䜘䜛⤌⧊ほᐹ⤖ᯝ䜢♧䛩䚹䛣䜜䜎䛷䛾ሗ࿌㼇㻡㼉䛷䚸ᶆ‽ᮦ䛷䛿ᩘ༑ 䃛㼙 ⛬ᗘ䛾ẼᏍ䛜ከᩘᏑᅾ䛩䜛䠄ẼᏍ⋡ 㻝㻡䠂⛬ᗘ䠅䛜䚸⦓ᐦᮦ䛷䛿ẼᏍ䛜䜋䛸䜣䛹Ꮡᅾ䛧䛺䛔䠄ẼᏍ⋡ 㻟䠂௨ୗ䠅䛣䛸䛜♧䛥䜜䛶䛔䜛䚹㻌㻭㼓 ⢏Ꮚศᕸ䛾᭤䛢ᙉᗘ䜈䛾ຠᯝ䜢ᅗ 㻞㻚㻝䠄⢏ᚄ䠅䛸ᅗ 㻞㻚㻞䠄㠃✚⋡䠅䛻♧䛩䚹ᖹᆒ⢏ᚄ䛜ᑠ䛥䛔䜋䛹䚸ᶆ‽ᮦ䞉⦓ᐦᮦ䛸䜒᭤䛢ᙉᗘ䛜㧗䛔ഴྥ䛜ぢ䜙䜜䜛䚹୍᪉䚸㠃✚⋡䛸᭤䛢ᙉᗘ䛻䛿᫂☜䛺┦㛵䛿ぢ䜙䜜䛺䛔䚹ᅗ 㻟 䛻ᶆ‽ᮦ䛾ẼᏍศᕸ䛾ຠᯝ䜢♧䛩䚹ᖹᆒᚄ䛜ᑠ䛥䛔䜋䛹䚸䜎䛯䚸㠃✚⋡䛜ᑠ䛥䛔䜋䛹䚸᭤䛢ᙉᗘ䛜ୖ䛜䜛ഴྥ䛜᫂☜䛻ぢ䜙䜜䜛䚹⦓ᐦᮦ䛾ᙉᗘ䛿ᅗ୰䛾್䜘䜚኱䛝䛟䠄䜰䝙䞊䝹䠖㻪㻝㻞㻜㻹㻼㼍䚸䜰䝙䞊䝹ฎ⌮䛺䛧䠖㻪㻤㻜㻹㻼㼍䠅䚸⦓ᐦ໬䛾ຠᯝ䛿᫂䜙䛛䛷䛒䜛䚹㻌

100
80
60

MPa

10

15
20
Porosity (%)25(a) pore size dependence(b) porosity dependence
Fig. 3 Relation between pore and bending strength at 77 K
in Gd123 bulks. Ŷ Anneal 䕺 As-grownཧ⪃ᩥ⊩㻌㻝㻚㻌㻹㻚㻹㼛㼞㼕㼠㼍㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻌㻞㻟㻡㻙㻞㻠㻜㻌㻔㻝㻥㻥㻠㻕㻌㻞㻜㻥㻚㻌㻞㻚㻌㻺㻚㻿㼍㼗㼍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㻌㻝㻟㻙㻢㻌㻔㻞㻜㻜㻜㻕㻌㻣㻣㻜㻚㻌㻟㻚㻌㻷㻚㼀㼍㼦㼛㼑㻘㻌㻴㻚㻵㼗㼡㼠㼍㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻘㻌㻟㻡㻣㻙㻟㻢㻜㻌㻔㻞㻜㻜㻝㻕㻌㻤㻜㻣㻚㻌㻠㻚㻌 㻴㻚㼀㼑㼟㼔㼕㼙㼍㻌 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 㻣㻣㻘㻌㻔㻞㻜㻜㻣㻕㻘㻌㻞㻼㻙㼜㻝㻟㻘㻌㼜㻚㻝㻡㻤㻚㻌㻡㻚㻌 ౛䛘䜀䚸㻴㻚㻲㼡㼖㼕㼙㼛㼠㼛㻌 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㻣㻤㻘㻌㻔㻞㻜㻜㻤㻕㻘㻌㻞㻰㻙㼍㻜㻠㻘㻌㼜㻚㻝㻠㻡㻚㻌 㻌― 12 ―

第83回

2010年度秋季低温工学・超電導学会

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Y 系線材 (2)㻺㼕䜑䛳䛝 㻯㼡㻛㻿㼁㻿㻟㻝㻢㈞ྜ䛫䝔䞊䝥ୖ䜈䛾㼅㻮㻯㻻 ཌ⭷䛾స〇䛸≉ᛶホ౯
Fabrication of YBCO thick film on Ni-electroplated Cu/SUS316 laminated tape and its propertyᅵ஭ ಇဢ, ຾┠㻌 ᙯே䠈㨯㻌 ୍, Ᏹ⏣ 㐩ஓ, ⓑᵹ ၿ๎䠄㮵ඣᓥ኱䠅䠗ᔱ 㑥ᘯ, ❑⏣㻌 ⚽୍䠄⏣୰㈗㔠ᒓᕤᴗ䠅䠗 ຍ⸨ ୔ᬕ䠄JFCC䠅䠗 㮵ᓥ ┤䝙, 㛗ᒇ㻌 㔜ኵ䠄୰㒊㟁ຊ䠅
DOI Toshiya, KATSUME Akihito, GI Ichi, UDA Tatsuya, HAKURAKU Yoshinori (Kagoshima University);
SHIMA Kunihiro, KUBOTA Shuichi (TAMAKA KIKINZOKU K..K.); Takeharu Kato (JFCC);KASHIMA Naoji, NAGAYA Shigeo (Chubu Electric Power Co.)
E-mail䠖 doi@eee.kagoshima-u.ac.jp㻝㻚㻌䛿䛨䜑䛻Y ⣔㉸ఏᑟ⥺ᮦ䛾ᇶᮦ䝔䞊䝥䛻䛿䚸㓄ྥ㔠ᒓ䝔䞊䝥䜢౑䛖ᡭἲ䛸䚸↓㓄ྥ㔠ᒓ䝔䞊䝥ୖ䛻 IBAD ἲ䛻䜘䜚㓄ྥ୰㛫ᒙ䜢ᙧᡂ䛩䜛ᡭἲ䛜⏝䛔䜙䜜䛶䛔䜛䚹⌧ᅾ䚸ᅜෆ䛷䛿 IBAD ἲ䜢୰ᚰ䛻㛤Ⓨ䛜㐍䜑䜙䜜䛶䛔䜛䛜䚸ప䝁䝇䝖໬䜢⪃䛘䛯᫬䛻䛿㓄ྥ㔠ᒓ䝔䞊䝥䛿⇕ฎ⌮䛾䜏䛷స〇䛷䛝䜛䛾䛷㨩ຊⓗ䛷䛒䜛䚹ᡃ䚻䛿䚸ᅽᘏ෌⤖ᬗ㞟ྜ⤌⧊䜢᭷䛩䜛㔠ᒓ䝔䞊䝥䜢౑䛳䛶䠎㍈㓄ྥ䛧䛯㧗 ㉸ఏᑟ⥺ᮦ䛾◊✲㛤Ⓨ䜢⢭ຊⓗ䛻㐍䜑䛶䛝䛯[1]䚹᭱᪂䝍䜲䝥䛿䚸2008 ᖺ䛻Ⓨ⾲䛧䛯{100}<001>㞟ྜ⤌⧊ Cu 䝔䞊䝥䜢 SUS316 䛸㈞ྜ䜟䛫䜛䛣䛸䛷ᶵᲔⓗᙉᗘ䜢㧗䜑䛯」ྜ䝔䞊䝥ୖ䛻䚸CeO2/YSZ/CeO2/Ni 䝞䝑䝣䜯ᒙ䜢௓䛧䛶
YBCO ⷧ⭷䜢స〇䛩䜛᩿㠃ᵓ㐀䜢᭷䛧䛶䛚䜚䚸270 nm ཌ䛾
YBCO ⷧ⭷ᒙ䛾 Jc 䛿䠏 MA/䠿䡉 䠎 䜢㉺䛘䜛䛣䛸䜢ሗ࿌䛧䛯
[1-5]䚹
௒ᅇ䛿䚸YBCO ᒙ䜢 1 Pm 䛸䛧䛯ཌ⭷䜢స〇䛧䛯⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䚹
㻞㻚㻌ᐇ㦂䛚䜘䜃ホ౯᪉ἲNi 䜑䛳䛝 Cu/SUS316 ㈞ྜ䛫䝔䞊䝥ୖ䛻䚸PLD ἲ䜢⏝䛔䛶
CeO2/YSZ/CeO2 䜒䛧䛟䛿 CeO2/Y2O3/CeO2 ✚ᒙ⭷䜢ᙧᡂ䛧䚸䛭䛾ୖ䛻ཌ䛥 270 nm 䜒䛧䛟䛿 1Pnm YBCO ⷧ⭷䜢స〇䛧䛯䚹䝞䝑䝣䜯ᒙⷧ⭷䚸YBCO ⷧ⭷䛾㓄ྥᛶ䜢☜ㄆ䛩䜛䛯䜑䛻 X ⥺ᅇᢡ䠄XRD䠅 ᐃ䛚䜘䜃ᴟⅬᅗ ᐃ䜢⾜䛳䛯䚹䛥䜙䛻㟁Ꮚ⥺ᚋ᪉ᩓ஘ᅇᢡἲ䠄EBSD䠅䜢⏝䛔䛶 YBCO ⷧ⭷䛾⤖ᬗ᪉఩䜢☜ㄆ䛧䛯䚹䜎䛯䚸ヨᩱ⾲㠃ཬ䜃᩿㠃ᵓ㐀䜢㉮ᰝᆺ㟁Ꮚ㢧ᚤ㙾
䠄SEM䠅䚸㏱㐣ᆺ㟁Ꮚ㢧ᚤ㙾䠄TEM䠅䛻䜘䜚ほᐹ䛧䛯䚹ヨᩱ䛾⮫⏺㟁ὶᐦᗘ䠄Jc䠅䚸⮫⏺ ᗘ䠄Tc䠅䛿┤ὶᅄ➃Ꮚ㏻㟁ἲ䛷 ᐃ䛧䛯䚹◊✲ࢆ㐍ࡵࡿࡇ࡜࡛ࠊᐇ⏝࡟౪ࡍࡿࡇ࡜ࡀྍ⬟࡞⥺ᮦࡀస〇࡛ࡁࡿ࡜⪃࠼ࡽࢀࡿࠋ
㻠㻚㻌ཧ⪃ᩥ⊩[1] ≉㛤ᖹ7-192546䚸1994ᖺ10᭶20᪥ฟ㢪䚸ඃඛᶒ୺ᙇ᪥
1993ᖺ䠍䠌᭶25᪥.
[2] Makoto Tokudome, Toshiya Doi, Ryota Tomiyasu, Shinya
Sato, Yoshinori Hakuraku, Shuichi Kubota, Kunihiro Shima,
Naoji Kashima and Shigeo Nagaya, J. Appl. Phys. vol. 104,
Nov. 2008, 103913.
[3] Makoto Tokudome, Toshiya Doi, Ryota Tomiyasu, Manabu
Daio, Yoshinori Hakuraku, Kunihiro Shima, Shuichi Kubota,
Naoji Kashima, and Shigeo Nagaya, IEEE Trans. Appl.
Supercond. vol.19, June 2009, pp.3287-3290.
[4] N. Kashima, K. Shima, T. Doi, S. Kubota, T. Watanabe, M.
Inoue, T. Kiss and S. Nagaya, IEEE Trans. Appl. Supercond.
vol.19, June 2009, pp.3299-3302.
[5] ᐩᏳுኴ㸪ᅵ஭ಇဢ㸪ᚨ␃ㄔ㸪኱⋤Ꮫ㸪ⓑᵹၿ๎㸪❑⏣⚽୍㸪ᔱ㑥ᘯ㸪㮵ᓥ┤஧㸪㛗ᒇ㔜ኵ, ప ᕤᏛ㸪vol.44㸪
No.6㸪2009ᖺ6᭶㸪pp.269-277.
[6] ኱⋤Ꮫ㸪ᅵ஭ಇဢ㸪ⓑᵹၿ๎㸪❑⏣⚽୍㸪ᔱ㑥ᘯ㸪㮵ᓥ┤஧㸪㛗ᒇ㔜ኵ, ప ᕤᏛ㸪vol.44㸪No.11㸪2009 ᖺ 11
᭶㸪pp.488-495.

3 Pm㻟㻚㻌⤖ᯝ䛸⪃ᐹ
ᅗ 1 ࡟ࠊྠᵝࡢ᮲௳࡛స〇ࡋࡓ YBCO ཌ⭷㸦1μm㸧࡜ⷧ⭷㸦270 nm㸧ࡢ⾲㠃 SEM ほᐹ⤖ᯝࢆ♧ࡍࠋ୧ヨᩱࡢ⾲㠃ࡣᖹ⁥࡛ࠊཌ⭷࡟࠾࠸࡚ࡶ a ㍈㓄ྥ⢏ࡣ඲ࡃほᐹࡉࢀ࡚࠸࡞࠸ࡇ࡜ࡀศࡿࠋX ⥺ᅇᢡ࠾ࡼࡧ EBSD ほᐹࡢ⤖ᯝࠊ࡝ࡕࡽࡢヨᩱ࡟㛵ࡋ࡚ࡶ YBCO ᒙࡢ⤖ᬗ㓄ྥᗘࡣࠊࣆ࣮ࢡ
್༙ᖜ࡛ 6 ᗘ࡛࠶ࡗࡓࠋ┤ὶ 4 ➃Ꮚἲ࡟ࡼࡾࠊࡇࢀࡽࡢヨᩱࡢ 77Kࠊ⮬ᕫ☢ሙ୰ࡢ Jc ࢆ ᐃࡋࡓ࡜ࡇࢁࠊⷧ⭷ࡣ 2.4
MA/cm2ࠊཌ⭷ࡣ 2.1 MA/cm2 ࡛࠶ࡗࡓࠋYBCO ᒙࡢཌࡉࢆ 270 nm ࠿ࡽ࡯ࡰ 4 ಸࡢ 1.0μm ࡜ࡋ࡚ࡶ Jc ࡣ࡯ࡰྠࡌ್ࢆ⥔ᣢࡋࡓࠋYBCO ᒙཌࢆ 1.0μm ࡜ࡋ࡚స〇ࡋࡓヨᩱࡢ Ic ࡣࢸ࣮ࣉᖜ 1 cm ࡟᥮⟬ࡍࡿ࡜ 210
A/cm ᖜ࡟࡞ࡿࠋX ⥺ᅇᢡ⤖ᯝࡸ SEM ほᐹ⤖ᯝ࠿ࡽࠊa ㍈㓄ྥ⢏⏕ᡂࡢ඙ࡋࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࡇ࡜࠿ࡽࠊ᭦࡞ࡿཌ
⭷໬ࡀྍ⬟࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ௨ୖࡢ⤖ᯝ࠿ࡽࠊ㓄ྥCu/ᙉ໬㔠ᒓࢸ࣮ࣉࢆ⏝࠸ࡓ Y(RE)⣔㉸ఏᑟ⥺ᮦࡣ㧗 Jc ࠿ࡘ㧗 Ic ࡛࠶ࡿࡇ࡜ࡀᐇド࡛ࡁࡓࠋ௒ᚋࡣ㛗ᑻ໬ࡢࣉࣟࢭࢫ

― 13 ―

3 Pm

60 Pm

(a) ⭷ཌ1000 nm

60 Pm(b) ⭷ཌ270 nm

ᅗ 1 YBCO ཌ⭷࡜ⷧ⭷ࡢ⾲㠃 SEM ほᐹ⤖ᯝ

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Y 系線材 (2)䜽䝷䝑䝗㓄ྥ㔠ᒓᇶᯈୖ䛻ᡂ⭷䛧䛯୰㛫ᒙ䛾㧗ᛶ⬟໬㻌㻵㼙㼜㼞㼛㼢㼑㼙㼑㼚㼠㻌㼛㼒㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻌㼒㼍㼎㼞㼕㼏㼍㼠㼑㼐㻌㼛㼚㻌㼏㼘㼍㼐㻙㼠㼥㼜㼑㻌㼠㼑㼤㼠㼡㼞㼑㼐㻌㼙㼑㼠㼍㼘㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㻌㻌ᮏ⏣㻌 ㈗⿱䠈᪂ᾏ㻌 ඃᶞ㻘㻌 㜿ẚ␃㻌 ೺ᚿ㻘㻌 ᑠす㻌 ᫀஓ㻘㻌 ኱ᯇ㻌 ୍ஓ䠄ఫ཭㟁ᕤ䠅㻌㻴㻻㻺㻰㻭㻌㼅㼛㼟㼔㼕㼔㼕㼞㼛䠈㻌 㻿㻴㻵㻺㻳㻭㻵㻌㼅㼡㼗㼕䠈㻌 㻭㻮㻵㻾㼁㻌㻷㼑㼚㼖㼕䠈㻌 㻷㻻㻺㻵㻿㻴㻵㻌㻹㼍㼟㼍㼥㼍䠈㻌 㻻㻴㻹㻭㼀㻿㼁㻌㻷㼍㼦㼡㼥㼍㻔㻿㻱㻵㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼔㼛㼚㼐㼍㻙㼥㼛㼟㼔㼕㼔㼕㼞㼛㻬㼟㼑㼕㻚㼏㼛㻚㼖㼜㻌㻌㻌㻝䠊䛿䛨䜑䛻㻌
ᕼᅵ㢮⣔㧗 ㉸㟁ᑟ⥺ᮦ䛿䚸☢ሙ୰䛷䛾⮫⏺㟁ὶ㻔㻵㼏㻕≉ᛶ䛻ඃ䜜䛶䛚䜚䚸㟁ຊ䜿䞊䝤䝹䜢ጞ䜑䚸ኚᅽჾ䚸㻿㻹㻱㻿䚸㉸㟁ᑟ䝬䜾䝛䝑䝖➼䚸ᵝ䚻䛺ᛂ⏝ᶵჾ䜈䛾㐺⏝䛻㛵䛩䜛◊✲䛜⾜䜟䜜䛶䛔䜛䚹ఫ཭㟁ᕤ䛷䛿䚸䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛾୍⎔䛸䛧䛶䚸㻢㻢㻌㼗㼂㻛㻡㻌㼗㻭䚸㻝㻡㻌㼙 㛗䛾୕ⰺ୍ᣓᵓ㐀䜢᭷䛩䜛㉸㟁ᑟ㟁ຊ䝰䝕䝹䜿䞊䝤䝹䛾㛤Ⓨ䛸䚸䛭䛾䛯䜑䛾㉸㟁ᑟ⥺ᮦ䛾స〇䜢⾜䛳䛶䛔䜛䚹䝰䝕䝹䜿䞊䝤䝹䛾㛤Ⓨ䛻䛿䚸㛗ᑻ䛻ர䛳䛶䚸㻠㻜㻜㻌 㻭㻛㼏㼙㻔㻵㼏㻠㻪㻝㻢㻜㻌 㻭㻕䛾䜘䛖䛺㧗 㻵㼏 䛛䛴ᆒ୍䛺㉸㟁ᑟ≉ᛶ䜢᭷䛩䜛㉸㟁ᑟ⥺ᮦ䛜ᚲせ䛸䛺䜛䚹≉䛻䚸㛗ᑻ䛻ர䛳䛶 㻠㻜㻜㻌㻭㻛㼏㼙 䛾 㻵㼏 䜢᭷䛩䜛㉸㟁ᑟ⥺ᮦ䜢Ᏻᐃ䛧䛶౪⤥䛩䜛ሙྜ䚸㛗ᡭ᪉ྥ䛾䜀䜙䛴䛝䜢⪃៖䛧䛶䚸㻠㻜㻜㻌 㻭㻛㼏㼙 䜘䜚䜒㧗䛔 㻵㼏 䜢Ᏻᐃ䛧䛶స〇䛷䛝䛺䛡䜜䜀䛺䜙䛺䛔䚹䛣䛾䜘䛖䛺㉸㟁ᑟ㻌⥺ᮦ䜢స〇䛩䜛䛯䜑䛻䛿㉸㟁ᑟᒙ䚸୰㛫ᒙ୪䜃䛻ᇶᯈ䛭䜜㻲㼕㼓㻚㻌㻝㻌㻼㼔㼛㼠㼛㼓㼞㼍㼜㼔㻌㼛㼒㻌㼑㼘㼑㼏㼠㼞㼛㼚㻌㼎㼑㼍㼙㻌㼑㼢㼍㼜㼛㼞㼍㼠㼕㼛㼚㻌㼟㼥㼟㼠㼑㼙⮬య䛾㧗ᛶ⬟໬䛜୙ྍḞ䛷䛒䜛䚹ᮏⓎ⾲䛷䛿䚸㉸㟁ᑟ⥺ᮦ䛾୰㛫ᒙ䛾ᡂ⭷ᕤ⛬䛻䛚䛔䛶ᨵၿ䜢⾜䛳䛯⤖ᯝ䚸⾲㠃ᖹ⁥㻌ᛶ䛜ᩘ 㼚㼙 䜸䞊䝎䞊䛸䛺䜚䚸䜎䛯ඃ䜜䛯㻔㻝㻜㻜㻕⤖ᬗᛶ䜢♧䛧䛯䛾㻌䛷ሗ࿌䛩䜛䚹㻌
㻌㻞䠊㉸㟁ᑟ⥺ᮦస〇ᕤ⛬㻌ᡃ䚻䛿 㻟㻜㻌㼙㼙 ᖜ䛾䜽䝷䝑䝗㓄ྥ㔠ᒓᇶᯈୖ䛻 㻾㻲 䝇䝟䝑䝍ἲཬ䜃䚸㻲㼕㼓㻚㻌 㻝 䛻♧䛩⿦⨨䜢⏝䛔䛯 㻱㼘㼑㼏㼠㼞㼛㼚㻌 㻮㼑㼍㼙㻔㻱㻮㻕ἲ䜢⏝䛔䛶୰㛫ᒙ䛾ᡂ⭷䜢⾜䛳䛯䚹䛭䛾ᚋ䚸᪂䛧䛟ᑟධ䛧䛯᭱኱ฟຊ 㻟㻜㻜㻌 㼃 䛾䜶䜻䝅䝬䝺䞊䝄㼇㻝㼉䜢⏝䛔䛯 㻼㻸㻰 ἲ䛻䜘䜚㉸㟁ᑟᒙ䛾ᡂ⭷䜢⾜䛔䚸㻰㻯 䝇䝟䝑䝍ἲ䛻䜘䜚䚸㻭㼓 䛾Ᏻᐃ໬ᒙ䜢ᡂ⭷䛧䛯䚹᭱ᚋ䛻㓟⣲⇕ฎ⌮䜢⾜䛔䚸⾲㠃䛻㖡䜑䛳䛝ฎ⌮䜢᪋䛧䛯䚹ḟ䛻䚸㻟㻜㻌㼙㼙 ᖜ䛾㉸㟁ᑟ⥺ᮦ䜢䚸㻠㻌㼙㼙 ᖜ䛻ᶵᲔⓗ䛻䝇䝸䝑䝖䛧䛯䚹᭱ᚋ䛻እほ᳨ᰝ䜢⾜䛔䚸᳨ᰝ䛻ྜ᱁䛧䛯䜒䛾䜢䚸䝰䝕䝹䜿䞊䝤䝹䜢స〇䛩䜛䜾䝹䞊䝥䛻౪⤥䛧䛶䛔䜛䚹㻌㻌㻌㻟㻚㻌 ୰㛫ᒙస〇䝥䝻䝉䝇䛾ᨵၿ䛻䜘䜛㧗ᛶ⬟໬㻌㻲㼕㼓㻚㻌㻞㻌㻵㼏㻠㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻳㼐㻮㻯㻻㻌㼒㼕㼘㼙㻌 㻌㉸㟁ᑟ⥺ᮦ䛾〇సᕤ⛬䛾୰㛫ᒙ䛾ᡂ⭷ᕤ⛬䛻䛚䛔䛶䚸㻾㻲 䝇䝟䝑䝍ἲ䛸 㻱㻮 ἲ䜢䚸ᡂ⭷ ᗘ䜔ᦙ㏦㏿ᗘ䛺䛹䛾᮲௳䜢䜅䜚䚸᭱㐺䛺᮲௳䛷ᡂ⭷䛩䜛䛣䛸䛻䜘䜚䚸⾲㠃ᖹ⁥ᛶ䛾ඃ䜜䛯㻌୰㛫ᒙ䛜ᚓ䜙䜜䛯䚹ᨵၿ䛧䛯స〇䝥䝻䝉䝇䛻䜘䜚ᚓ䜙䜜䛯୰㻌㛫ᒙ䜢⏝䛔䛶㉸㟁ᑟ⥺ᮦ䜢స〇䛧䚸 㻵㼏 ≉ᛶ䜢ホ౯䛧䛯⤖ᯝ䚸▷ᑻヨᩱ䛷 㻠㻥㻣㻌㻭㻛㼏㼙㻌 䛾≉ᛶ䜢♧䛧䛯䚹୰㛫ᒙ䛾స〇䝥䝻䝉䝇䛾ᨵၿ䛻䜘䜛 㻵㼏 䛾᥎⛣䜢 㻲㼕㼓㻚㻌㻞 䛻䚸䜎䛯䚸ᨵၿ䛧䛯୰㛫ᒙ䜢⏝䛔䛯䚸⣙ 㻞㻜㻌 㼙 䛾㛗ᑻ䛻ர䛳䛶㻌 㻵㼏㻪㻠㻜㻜㻌 㻭㻛㼏㼙 䛾≉ᛶ䜢♧䛧䛯 㻠㻌㼙㼙 ᖜ䛾㉸㟁ᑟ⥺ᮦ䛾㛗ᡭ᪉ྥ䛾 㻵㼏 ศᕸ䛾䜾䝷䝣䜢 㻲㼕㼓㻚㻌㻟 䛻♧䛩䚹㻌
௒ᚋ䛿᭦䛺䜛㧗 㻵㼏 ໬䛸㛗ᑻ໬䛜ㄢ㢟䛷䛒䜛䚹㻌㻌㻠䠊ㅰ㎡㻌㉸㟁ᑟ⥺ᮦ䛾స〇䛻䛒䛯䛳䛶䚸㓟⣲⇕ฎ⌮䜢ᐇ᪋䛧䛶㡬䛝䜎䛧䛯ᒣ⏣㞝୍Ặ䜢䛿䛨䜑䚸㻵㻿㼀㻱㻯 䛾᪉䚻䛾䛤ᨭ᥼䛻ឤㅰ⮴䛧䜎䛩䚹㻌
㻲㼕㼓㻚㻌㻟㻌㻵㼏㻠㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼕㼚㻌㼍㻌㼘㼛㼚㼓㼕㼠㼡㼐㼕㼚㼍㼘㻌㼐㼕㼞㼑㼏㼠㼕㼛㼚㻌 㻌ᮏ◊✲䛿䚸䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛾୍⎔䛸䛧䛶䚸⊂❧⾜ᨻἲே᪂䜶䝛䝹䜼䞊䞉⥲ྜᢏ⾡㛤Ⓨᶵᵓ㻔㻺㻱㻰㻻㻕䛾ጤク䜢ᚓ䛶ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌
㻌
㻌
ཧ⪃ᩥ⊩㻌
㻌
㻝㻚㻌 㻷㻚㻌 㻭㼎㼕㼞㼡㻘㻌 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 㻤㻞㻌㻔㻞㻜㻝㻜㻕㻌㼜㻚㻝㻜㻡㻌― 14 ―

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Y 系線材 (2)኱㟁ὶ䜿䞊䝤䝹⏝ⷧ⭷㉸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㼒㼛㼞㻌㼠㼔㼑㻌㼘㼍㼞㼓㼑㻌㼏㼡㼞㼞㼑㼚㼠㻌㼏㼍㼎㼘㼑㻌㻌ᑠす㻌 ᫀஓ䚸᪂ᾏ㻌 ඃᶞ䚸㜿ẚ␃೺ᚿ䚸ᮏ⏣㈗⿱䚸኱ᯇ୍ஓ㻌 䠄ఫ཭㟁ᕤ䠅㻌㻷㻻㻺㻵㻿㻴㻵㻌㻹㼍㼟㼍㼥㼍䠈㻌 㻿㻴㻵㻺㻳㻭㻵㻌㼅㼡㼗㼕㻘㻌㻭㻮㻵㻾㼁㻌㻷㼑㼚㼖㼕㻘㻌㻴㻻㻺㻰㻭㻌㼅㼛㼟㼔㼕㼔㼕㼞㼛㻘㻌㻻㻴㻹㻭㼀㻿㼁㻌㻷㼍㼦㼡㼥㼍㻌㻔㻿㻱㻵㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㼛㼚㼕㼟㼔㼕㻙㼙㼍㼟㼍㼥㼍㻬㼟㼑㼕㻚㼏㼛㻚㼖㼜㻌㻌䝇䝸䝑䝖䛧䛶స〇䛧䛶䛚䜚䚸ᅗ䛻䛿ᖜ᪉ྥ఩⨨䛻䜘䜛 㻵㼏 ศᕸ䜒㻝䠊䛿䛨䜑䛻㻌
♧䛧䛶䛔䜛䚹㻌
ⷧ⭷㉸㟁ᑟ⥺ᮦ䛻䜘䜛኱㟁ὶ㉸㟁ᑟ䜿䞊䝤䝹䛾㛤Ⓨ䜢䚸స〇䛧䛯⥺ᮦ䛻䛚䛔䛶䛿䚸᭱㧗䛷 㻝㻥㻜㻭䠄㻠㼙㼙 ᖜ䠅䛾 㻵㼏 䛜䠪䠡䠠䠫䝥䝻䝆䜵䜽䝖䛂䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛃ᚓ䜙䜜䛯䛜䚸ᅗ䛾䜘䛖䛻䚸㻟㻜㼙㼙 ᖜ䛷ᡂ⭷䛧䛯➃䛛䜙䝇䝸䝑䝖䛧䜢ཷク䛧䛶ᐇ᪋䛧䛶䛔䜛㼇㻝㼉䚹䛣䛾ሗ࿌䛷䛿䚸䜿䞊䝤䝹㛤Ⓨ䛻䛯⥺ᮦ䛻䛚䛔䛶䚸㻵㼏 䛜ᑡ䛧ప䛔ഴྥ䛜ぢ䜙䜜䛯䚹୰㛫ᒙ䛾≉౑⏝䛩䜛㉸㟁ᑟ⥺ᮦ䛾㛤Ⓨ䞉స〇䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌ᛶ䛿䚸㻟㻜㼙㼙 ᖜ䛻䜟䛯䛳䛶ᆒ୍䛺≉ᛶ䛜ᚓ䜙䜜䛶䛔䜛䛣䛸䛛䜙䜿䞊䝤䝹䛾஺ὶᦆኻᢚไ䛾䛯䜑䚸౑⏝䛩䜛⥺ᮦ䛿䚸ᇶᯈ㼇㻠㼉䚸䛣䛾ཎᅉ䛿䚸㉸㟁ᑟᒙ䛾 㻼㻸㻰 ᡂ⭷䛷䛾ᇶᯈ ᗘ䞉⭷ཌ䛻ప☢ᛶ䛾䜽䝷䝑䝗䝍䜲䝥㓄ྥ㔠ᒓᇶᯈ㼇㻞㼉䜢⏝䛔䛯 㻞㼙㼙 ᖜཪ䛾୙ᆒ୍䛻㉳ᅉ䛧䛶䛔䜛䛸⪃䛘䛶䛚䜚䚸௒ᚋ䛾ㄢ㢟䛷䛒䜛䚹㻌䛿 㻠㼙㼙 ᖜ䛾⥺ᮦ䛷䛒䜛䚹Ᏻᐃ〇㐀ᢏ⾡㛤Ⓨ䞉㧗 㻵㼏 ໬㛤Ⓨ䜢㻌ᐇ᪋䛧䛯⤖ᯝ䚸㻠㼙㼙 ᖜ䛷 㻵㼏 䛜 㻝㻞㻜㻙㻝㻥㻜㻭 䛾⥺ᮦ䜢䚸䜿䞊䝤䝹ㅰ㎡㻌
㛤Ⓨ䛾䛯䜑䛻స〇䛧䛯䚹㻌⥺ᮦస〇䛻䛒䛯䜚䚸㓟⣲䜰䝙䞊䝹䜢ᐇ᪋䛔䛯䛰䛔䛯ᒣ⏣㻌㞝୍Ặ䜢䛿䛨䜑䚸㻵㻿㼀㻱㻯 䛾᪉䚻䛾䛤ᨭ᥼䛻ឤㅰ䛔䛯䛧䜎䛩䚹㻌㻞䠊⥺ᮦస〇䝥䝻䝉䝇㻌ᮏ◊✲䛿䚸䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡◊✲㛤Ⓨ䛾㻲㼕㼓㻚䠍䛻ᡃ䚻䛾⥺ᮦᵓ㐀䛸స〇䝥䝻䝉䝇䛾ᴫ␎䜢♧䛩䚹୍⎔䛸䛧䛶䚸᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䠄㻺㻱㻰㻻䠅㻟㻜㼙㼙 ᖜ䛾㓄ྥ㔠ᒓᇶᯈୖ䛻䚸㻾㻲 䝇䝟䝑䝍䝸䞁䜾䛷୰㛫ᒙ䜢䛾ጤク䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌ᙧᡂ䛧䚸㉸㟁ᑟᒙ䛿 㻳㼐㻮㼍㻯㼡㻻 䜢 㻼㻸㻰 ἲ䛷ᙧᡂ䛧䛶䛔䜛䚹㻭㼓㻌ಖㆤᒙ䜢௜䛡䛶㓟⣲䜰䝙䞊䝹䛾ᚋ䚸ᶵᲔᘧ䝇䝸䝑䝍䛷 㻞㼙㼙 ᖜ㻌ཪ䛿 㻠㼙㼙 ᖜ䛻ศ๭䛧䚸㟁Ẽ䜑䛳䛝䛻䜘䛳䛶 㻯㼡 Ᏻᐃ໬ᒙ䜢࿘ཧ⪃ᩥ⊩㻌ᅖ䛻ᙧᡂ䛧䛯䜒䛾䛷䛒䜛䚹㻌㻝㻚㻌 㻹㻚㻌 㻻㼔㼥㼍㻘㻌 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 㻤㻞㻌䛣䛾䜘䛖䛻䛧䛶స〇䛧䛯⥺ᮦ䛿䚸䝸䞊䝹 㼠㼛 䝸䞊䝹 㻵㼏 ᐃ⿦㻔㻞㻜㻝㻜㻕㻌㼜㻚㻞㻣㻌⨨䛷 㻵㼏 䜢 ᐃ䛧䚸⥺ᮦእほ䛻␗ᖖ䛜䛺䛔䛣䛸䜢䝏䜵䝑䜽䛧䛶䚸㻞㻚㻌 㻷㻚㻌 㻻㼔㼗㼕㻘㻌 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 㻤㻞㻌䜿䞊䝤䝹㛤Ⓨ䛻౑⏝䛧䛶䛔䜛䚹㻌㻔㻞㻜㻝㻜㻕㻌㼜㻚㻝㻝㻠㻌㻌㻟㻚㻌 㻷㻚㻌 㻭㼎㼕㼞㼡㻘㻌 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 㻤㻞㻌㻟䠊⥺ᮦ䛾㧗 㻵㼏 ໬㻌㻔㻞㻜㻝㻜㻕㻌㼜㻚㻝㻜㻡㻌ḟ䛾䠎䛴䛾䝥䝻䝉䝇ᨵၿ䛻䜘䜚䚸⥺ᮦ䛾㧗 㻵㼏 ໬䜢⾜䛺䛳䛯䚹㻠㻚㻌 㻴㻚㻌 㻻㼔㼠㼍㻘㻌 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 㻤㻜㻌୍䛴䛻䛿䚸㧗ฟຊ䝺䞊䝄䛾ᑟධ䛻䜘䜚㉸㟁ᑟᡂ⭷䛾⥺㏿䜢㻔㻞㻜㻜㻥㻕㻌㼜㻚㻝㻥㻜㻌㧗㏿໬䛩䜛䛣䛸䛷ཌ⭷䛷䛾㧗 㻵㼏 ໬䛜ྍ⬟䛸䛺䛳䛯㼇㻟㼉䚹㻌஧䛴䜑䛿䚸୰㛫ᒙ 㼟㼑㼑㼐㻌 㼘㼍㼥㼑㼞 䛾⭷ཌ䛸ᡂ⭷᮲௳䛾᳨ウ䛷䚸䛣䜜䛻䜘䜚⾲㠃䛜ᖹᆠ໬䛥䜜䚸㻵㼏 ྥୖ䛻䛴䛺䛜䛳䛶䛔䜛䚹䛣䜜䜙䛻䜘䛳䛶䚸㻵㼏 䛿 㻠㻥㻣㻭㻛㼏㼙䠄▷ᑻ䝕䞊䝍䠈㻶㼏㻩㻝㻚㻣㻤㻭㻛㼏㼙㻞䠅䛻ྥୖ䛧䛯䚹㻌㻌㻠䠊⥺ᮦ䛾 㻵㼏 ศᕸ㻌㻲㼕㼓㻚㻞 䛻䜿䞊䝤䝹䝔䝇䝖⏝䛾⥺ᮦ䠄㻠㼙㼙 ᖜ䠅䛸䛧䛶⥲㛗㻞㻜㻜㼙 䜢స〇䛧䛯䛸䛝䛾 㻵㼏 䛾ศᕸ䜢♧䛩䚹๓㏙䛧䛯䜘䛖䛻 㻠㼙㼙㻝㻜㻜ᖜ⥺ᮦ䛿䚸㻟㻜㼙㼙 ᖜ䛾ᇶᯈୖ䛻ྛᒙ䜢ᡂ⭷䛧䛯ᚋ䚸㻠㼙㼙 ᖜ䛻㻣㻚㻌㻵㼏㻌㼙㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻤㻜㻠㻚㻌㻻㻞㻌㼍㼚㼚㼑㼍㼘㻌㻢㻚㻌㻯㼡㻌㼟㼠㼍㼎㼕㼘㼕㼦㼕㼚㼓㻌㼘㼍㼥㼑㼞㻌㻔㼑㼘㼑㼏㼠㼞㼛㻙㼜㼘㼍㼠㼕㼚㼓㻕㻌㻟㻚㻌㻭㼓㻌㼜㼞㼛㼠㼑㼏㼠㼕㼚㼓㻌㼘㼍㼥㼑㼞㻌㻔㻰㻯㻌㼟㼜㼡㼠㼠㼑㼞㼕㼚㼓㻕㻌㼠㼛㼠㼍㼘㻌㼘㼑㼚㼓㼠㼔㻌㻔㼙㻕㻡㻚㻌㼟㼘㼕㼠㼠㼕㼚㼓㻌

㻢㻜
㻠㻜
㻞㻜

㻞㻚㻌㻿㻯㻌㼘㼍㼥㼑㼞㻌 㻌㻔㻼㻸㻰㻌㻳㼐㻮㻯㻻㻕㻌㻝㻤㻜㻙㻞㻝㻜

㻝㻡㻜㻙㻝㻤㻜

㻝㻞㻜㻙㻝㻡㻜

㻥㻜㻙㻝㻞㻜

㻢㻜㻙㻥㻜㻝㻚㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻌㻌 㻌 㻔㻾㻲㻌㼟㼡㼜㼡㼠㼠㼑㼞㼕㼚㼓㻕㻌

㻟㻜㻙㻢㻜

㻜㻙㻟㻜

㻜

㻵㼏㻌㻔㻭㻘㻌㻠㼙㼙㻙㼣㼕㼐㼑㻕㻲㼕㼓㻚㻞㻌㻵㼏㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㻠㼙㼙㻙㼣㼕㼐㼑㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼒㼛㼞㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼏㼍㼎㼘㼑㻌㻲㼕㼓㻚㻝㻌㻿㼠㼞㼡㼏㼠㼡㼞㼑㻌㼍㼚㼐㻌㼜㼞㼛㼐㼡㼏㼠㼕㼛㼚㻌㼜㼞㼛㼏㼑㼟㼟㻌㼛㼒㻌㼠㼔㼑㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼒㼛㼞㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼏㼍㼎㼘㼑㻌― 15 ―

第83回

2010年度秋季低温工学・超電導学会

1A-p04

Y 系線材 (2)䜲䞁䝥䝹䞊䝮 㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰 ἲ䛻䜘䜛 㻵㻮㻭㻰㻙㻹㼓㻻 ᇶᯈୖ䜈䛾 㼅㻮㼍㻞㻯㻟㻻㼥 ⭷స〇㻌㼅㻮㼍㻞㻯㼡㻟㻻㼥㻌㼒㼕㼘㼙㼟㻌㼜㼞㼑㼜㼍㼞㼑㼐㻌㼎㼥㻌㼕㼚㻙㼜㼘㼡㼙㼑㻌㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰㻌㼙㼑㼠㼔㼛㼐㻌㼛㼚㻌㻵㻮㻭㻰㻙㻹㼓㻻㻌㼟㼡㼎㼟㼠㼞㼍㼠㼑㼟㻌ᑠ㔝㻌 㑳ᮁ㻘㻌 ୍㔝㻌 ♸ு㻘㻌 ྜྷ⏣㻌 㝯㻘㻌 㧗஭㻌 ྜྷ᫂㻔ྡ኱㻕㻧㻌 ྜྷ✚㻌 ṇ᫭㻘㻌 ࿴Ἠ㻌 ㍤㑻㻘㻌 ሷཎ㻌 ⼥㻔㻵㻿㼀㻱㻾㻭㻕㻌㻻㻺㻻㻌㻵㼗㼡㼛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㻘㻌㼀㻭㻷㻭㻵㻌㼅㼛㼟㼔㼕㼍㼗㼕㻌㻔㻺㼍㼓㼛㼥㼍㻌㼁㼚㼕㼢㻚㻌㻕㻧㻌 㻌㼅㻻㻿㻴㻵㼆㼁㻹㻵㻌㻹㼍㼟㼍㼠㼑㼞㼡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㻌㻔㻵㻿㼀㻱㻾㻭㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼛㼚㼛㻙㼕㼗㼡㼛㻝㻜㻬㼑㼑㼟㻚㼚㼍㼓㼛㼥㼍㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌20

㻝㻚㻌 䛿䛨䜑䛻㻌dt-s=20 mm
dt-s=30 mm
dt-s=40 mm

ᡃ䚻䛿䛣䜜䜎䛷䚸㻺㼐㻦㼅㻭㻳 䝺䞊䝄䞊䜢⏝䛔䛯 㻼㻸㻰 ἲ䛻䜘䜚స〇䛧䛯 㼅㻮㻯㻻 ⷧ⭷䛜䜶䜻䝅䝬䝺䞊䝄䞊䜢⏝䛔䛯᫬䛸ྠ➼䛾㉸䝁䝇䝖䚸䝷䞁䝙䞁䜾䝁䝇䝖䛜Ᏻ౯䛺䛯䜑䚸ᕤᴗᛂ⏝䛻᭷฼䛷䛒䜛䛸ᮇᚅ䛥䜜䛶䛔䜛䚹䜎䛯䚸㉸ఏᑟ⥺ᮦ䛾ᐇ⏝໬䛻ྥ䛡䛶䚸┬㈨※䞉㧗㏿䛷䛾⥺ᮦస〇䜒㔜せ䛷䛒䜛䚹䛭䛾䛯䜑䚸ᮏሗ࿌䛷䛿

15

㻌

Yield [%]

ఏᑟ≉ᛶ䜢♧䛩䛣䛸䜢ሗ࿌䛧䛯㼇㻝㼉䚹㻺㼐㻦㼅㻭㻳 䝺䞊䝄䞊䛿ึᮇ10⥺ᮦస〇䛻䛚䛡䜛཰⋡䛾ྥୖ䜢┠ⓗ䛸䛧䚸䜲䞁䝥䝹䞊䝮ἲ䜢⏝䛔䛶 㼅㻮㻯㻻 ⭷䛾స〇䜢⾜䛳䛯䚹᭦䛻䚸⭷ཌ䜔㉸ఏᑟ≉ᛶ

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200

250

Po2 [Pa]䛾ᆒ୍ᛶ䜢ྥୖ䛥䛫䜛䛯䜑䛻䚸䝍䞊䝀䝑䝖䜢ഴ䛡䚸䝥䝹䞊䝮䜢

300

350

400

㻲㼕㼓㻚㻌㻝㻚㻌㼐㼠㻙㼟㻌㼍㼚㼐㻌㻼㻻㻞㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼙㼍㼠㼑㼞㼕㼍㼘㻌㼥㼕㼑㼘㼐㻚㻌ṓᕪ㐠ື䛥䛫䛯ᡂ⭷䜒⾜䛳䛯䚹㻌㻞㻚㻌 ᐇ㦂᪉ἲ㻌㼜㼘㼡㼙㼑㻌

㼐㼠㻙㼟㻌㼅㻮㻯㻻 ⭷䛿 㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰 ἲ䜢⏝䛔䛶䚸㻝㻜㻌㼙㼙㻞 䛾 㻯㼑㻻㻞㻛㻸㻹㻌㻻㻛㻵㻮㻭㻰㻙㻹㼓㻻㻛㻳㼆㻻㻛㻴㼍㼟㼠㼑㼘㼘㼛㼥㻔㻵㻮㻭㻰㻙㻹㼓㻻㻕ᇶᯈୖ䛻స〇䛧䛯䚹ᇶᯈ㼟㼡㼎㼟㼠㼞㼍㼠㼑ᗘ䛿 㻥㻜㻜䉝䛷䛒䜛䚹స〇䛧䛯ⷧ⭷䛿䝍䞊䝀䝑䝖㻙ᇶ䃗ᯈ㛫㊥㞳䠄㼐㼠㻙㼟䠅䚸㓟⣲ᅽຊ䠄㻼㻻㻞䠅䛻ᑐ䛧䛶䚸㉸ఏᑟ≉ᛶཬ䜃཰⋡䜢ホ౯䛧䛯䚹㻌㻟㻚㻌 ᐇ㦂⤖ᯝཬ䜃⪃ᐹ㻌㼜㼛㼟㼕㼠㼕㼛㼚㻌㻲㼕㼓㻚㻌㻝 䛻 㼐㼠㻙㼟䚸㻼㻻㻞 䛻ᑐ䛩䜛཰⋡䛾ኚ໬䜢♧䛩䚹ᡃ䚻䛾䜾䝹䞊㼅㻮㻯㻻㻌㼠㼍㼞㼓㼑㼠㻌䝥䛷ᚓ䜙䜜䛶䛔䜛᭱㐺᮲௳ 㼐㼠㻙㼟㻩㻠㻜㻌㼙㼙䚸㻼㻻㻞㻩㻠㻜㻌㻼㼍 䛷స〇䛧䛯㼅㻮㻯㻻 ⭷䛾཰⋡䛿 㻣㻚㻢㻥㻌 㻑䛷䛒䛳䛯䚹ᮏ◊✲䛷䛿䚸䜲䞁䝥䝹䞊㻲㼕㼓㻚㻌㻞㻚㻌㻿㼏㼔㼑㼙㼍㼠㼕㼏㻌㼐㼞㼍㼣㼕㼚㼓㻌㼛㼒㻌㼕㼚㻙㼜㼘㼡㼙㼑㻌㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰㻌㼟㼥㼟㼠㼑㼙㻌䝮ἲ䜢⏝䛔 㼐㼠㻙㼟 䜢 㻞㻜㻌㼙㼙 䜎䛷▷⦰䛩䜛䛣䛸䛷཰⋡䛿 㻝㻞㻚㻝㻞㻌㻑䜎㼍㼚㼐㻌㼜㼞㼑㼏㼑㼟㼟㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㼜㼘㼡㼙㼑㻚㻌㼛㼜㼠㼕㼙㼍㼘㻌 㻌㼏㼛㼚㼐㼕㼠㼕㼛㼚㻌㻼㻻㻞㻩㻞㻜㻜㻌 㻼㼍 䛷཰⋡䛿ᮏ◊✲䛷᭱䜒㧗䛔 㻝㻤㻚㻥㻢㻌 㻑䜢♧䛧䚸䛭䜜5௨ୖ䛾 㻼㻻㻞 䛷䛿཰⋡䛿పୗ䛧䛯䚹䛺䛚䚸㻌 㼄㻾㻰 䛾⤖ᯝ䛛䜙స〇

film thickness[Pm]䛷ቑຍ䛧䛯䚹䜎䛯䚸㼐㼠㻙㼟㻩㻞㻜㻌㼙㼙 䛾᮲௳䛷 㻼㻻㻞 䜢ቑຍ䛥䛫䛯ሙྜ䚸

4䛧䛯඲䛶䛾ヨᩱ䛿䚸Ⰻዲ䛺 㻞 ㍈㓄ྥ䛷䛒䜛䛣䛸䜢☜ㄆ䛧䛯䚹㻌୍᪉䚸స〇䛧䛯ヨᩱ䛾 㼀㼏䚸㻶㼏㻔㻣㻣㻌 㻷䚸㼟㼒㻕䛿 㼅㻮㻯㻻 ⭷䛾୰ኸ䛷
㻞㻌

T 0r
T 1.5r
T 3r
T 15r3㻞㻌㻤㻜㻚㻝㻌㻷䚸㻜㻚㻝㻟㻌㻹㻭㻛㼏㼙 䛷䚸➃㒊䛷䛿 㻤㻤㻚㻟㻌㻷䚸㻝㻚㻤㻝㻌㻹㻭㻛㼏㼙 䛷

2䛒䛳䛯䚹䜎䛯䚸➃㒊䛾ᡂ⭷䝺䞊䝖䛿୰ኸ䛻ẚ䜉 㻝㻛㻡 䛷䛒䜚䚸㉸ఏᑟ≉ᛶ䛚䜘䜃⭷ཌ䛜୙ᆒ୍䛷䛒䛳䛯䚹㻌dt-s=20 mm PO2=200 Pa

1䛣䛾⭷䛾୙ᆒ୍ᛶ䜢ゎỴ䛩䜛䛯䜑䛻䝍䞊䝀䝑䝖ἲ⥺䜢㖄┤0᪉ྥ䛻ᑐ䛧䛶ഴ䛡䜛䛣䛸䛷䝥䝹䞊䝮䜢ṓᕪ㐠ື䛥䛫䛯䚹㻲㼕㼓㻚㻌 㻞䛻䛭䛾ᴫ␎ᅗ䜢♧䛩䚹䃗䛿 㻜㽅䡚㻝㻡㽅 䛷ኚ໬䛥䛫䛯䚹㻌㻌 㻲㼕㼓㻚㻌 㻟 䛻䃗䛻ᑐ䛩䜛⭷ཌศᕸ䜢♧䛩䚹㼐㼠㻙㼟㻩㻞㻜㻌 㼙㼙䚸㻼㻻㻞㻩㻞㻜㻜㻌dt-s=40 mm PO2=40 Pa
-4

-2

2

4

㻲㼕㼓㻚㻌㻟㻚㻌 䃗㻌 㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㼠㼔㼕㼏㼗㼚㼑㼟㼟㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻚㻌㻼㼍䚸䃗㻩㻌 㻜㼻䛷䛿䝃䞁䝥䝹䛾୰ኸ䛸➃㒊䛷䛾ᡂ⭷䝺䞊䝖䛾୙ᆒ୍ᛶ䛜኱䛝䛔䛜䚸 䃗䜢ቑຍ䛥䛫䜛䛻ᚑ䛔ᡂ⭷䝺䞊䝖䛜ᆒ୍䛻0

position[mm]㻌ㅰ㎡㻌䛺䛳䛯䚹䃗㻩㻝㻡㼻䛻䛧䛯䛸䛝 㼀㼏䚸㻶㼏㻌 䛿➃㒊䞉୰ኸඹ䛻䛭䜜䛮䜜ᮏ◊✲䛾୍㒊䛿䚸⛉Ꮫ◊✲㈝⿵ຓ㔠㻔㻝㻥㻢㻣㻢㻜㻜㻡㻘㻌 㻞㻜㻢㻤㻢㻜㻢㻡㻕㻤㻢㻚㻤㻌 㻷䚸㻝㻚㻢㻞㻹㻭㻛㼏㼙㻞 䜢♧䛧䚸➃㒊䛾ᡂ⭷䝺䞊䝖䛿୰ኸ䛻ẚ䜉䛛䜙䛾ຓᡂ䜢ཷ䛡䜛䛸ඹ䛻䚸ᕼᑡ㔠ᒓ௦᭰ᮦᩱ㛤Ⓨ䝥䝻䝆䜵㻞㻛㻟 ⛬ᗘ䜎䛷ᨵၿ䛧䛯䚹䛧䛛䛧䚸䛣䛾㉸ఏᑟ≉ᛶ䛿᭱㐺᮲௳䛷䜽䝖䛾୍⎔䛸䛧䛶⊂❧⾜ᨻἲே᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㻞䛾 㼀㼏㻩㻤㻥㻚㻣㻌 㻷䚸㻶㼏㻩㻞㻚㻜㻣㻌 㻹㻭㻛㼏㼙 䛸ẚ䜉ప䛔䚹௒ᚋ䚸㼀㼏䚸㻶㼏 䛾ྥ㛤Ⓨᶵᵓ㻔㻺㻱㻰㻻㻕䛛䜙䛾ጤク䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌ୖ䛾䛯䜑䚸⤌ᡂ䛾᭱㐺໬䛺䛹䜢᳨ウ䛩䜛ணᐃ䛷䛒䜛䚹㻌ཧ⪃ᩥ⊩㻌 㻌㻝㻚㻌㼅㻚㻌㻵㼏㼔㼕㼚㼛㻘㻌㼑㼠㻌㼍㼘㻚㻌㻦㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻘㻌㼢㼛㼘㻚㻌㻠㻣㻜㻌㻔㻞㻜㻝㻜㻕㻌㼜㻚㻌㻝㻞㻟㻠㻌― 16 ―

第83回

2010年度秋季低温工学・超電導学会

1A-p05

Y 系線材 (2)䝁䞁䝡䝘䝖䝸䜰䝹 㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰 ἲ䛻䜘䜛᪂つ☢᮰䝢䞁䝙䞁䜾ᮦᩱ䛾㧗㏿䝇䜽䝸䞊䝙䞁䜾㻌㻾㼍㼜㼕㼐㻌㼟㼏㼞㼑㼑㼚㼕㼚㼓㻌㼛㼒㻌㼚㼑㼣㻌㼒㼘㼡㼤㻌㼜㼕㼚㼚㼕㼚㼓㻌㼙㼍㼠㼑㼞㼕㼍㼘㼟㻌㼎㼥㻌㼙㼑㼍㼚㼟㻌㼛㼒㻌㼏㼛㼙㼎㼕㼚㼍㼠㼛㼞㼕㼍㼘㻌㻺㼐㻦㼅㻭㻳㻙㻼㻸㻰㻌㼙㼑㼠㼔㼛㼐㻌㻌୍㔝㻌 ♸ு䠈ྜྷ⏣㻌 㝯䠈ྜྷᮧ㻌 ᣅஓ䠈㧗஭㻌 ྜྷ᫂䠄ྡ኱䠅䠗㕥ᮌ㻌 ᾈ஧䠈➉ෆ㻌 ⛱᫭䠈႐ከ㻌 㝯௓䠄㟼኱䠅㻌
ICHINO Yusuke䠈YOSHIDA Yutaka䠈YOSHIMURA Takuya䠈TAKAI Yoshiaki (Nagoya Univ.);SUZUKI Koji䠈TAKEUCHI Toshiaki䠈KITA Ryusuke (Shizuoka Univ.)
E-mail: ichino@nuee.nagoya-u.ac.jp㸬ࡣࡌࡵ࡟
䛣䜜䜎䛷䚸ึᮇ䝁䝇䝖䚸䝷䞁䝙䞁䜾䝁䝇䝖䛜Ᏻ౯䛺 Nd:YAG
䝺䞊䝄䞊䜢⏝䛔䛶 YBCO ⷧ⭷䜢స〇䛧䚸䜶䜻䝅䝬䝺䞊䝄䞊䛸㐯Ⰽ䛺䛔䛣䛸䜢᫂䜙䛛䛻䛧䛶䛝䛯[1]䚹䜎䛯䚸䝁䞁䝡䝘䝖䝸䜰䝹
Nd:YAG-PLD ἲ䜢⏝䛔䜛䛣䛸䛷䚸☢᮰䝢䞁Ṇ䜑ᮦᩱ䛾᭱㐺ῧຍ㔞䜢㧗㏿䛻Ỵᐃ䛷䛝䜛䛣䛸䜢ሗ࿌䛧䛯[2, 3]䚹⌧ᅾ䚸䝁䞁䝡䝘䝖䝸䜰䝹ἲ䜢⏝䛔䛶᪂つேᕤ䝢䞁Ṇ䜑䝉䞁䝍䞊(APC)䛾᥈⣴䜢⾜䛳䛶䛔䜛䚹
APC 䛸䛧䛶䚸Ba 䜢ྵ䜏䝨䝻䝤䝇䜹䜲䝖䛻㢮⦕䛾ᵓ㐀䛷䛒䜛䛺䛹䛾≉ᚩ䜢ᣢ䛴 BaZrO3 䜔 BaSnO3 䛺䛹䛜ሗ࿌䛥䜜䛶䛔䜛䚹ᮏ ◊ ✲ 䛷 䛿 䚸 䛣 䜜 䜙 䛸 ྠ 䛨 ≉ ᚩ 䜢 ᣢ 䛴 BaTbO3 (BTO) 䛸
Ba3Cu3In4O12 (334)䛻╔┠䛧䛯[4]䚹䝁䞁䝡䝘䝖䝸䜰䝹ἲ䜢⏝䛔
䛶 YBCO ⷧ⭷䛻䛣䜜䜙䛾≀㉁䜢ῧຍ䛧䚸ῧຍ㔞䛻ᑐ䛩䜛㉸ఏᑟ≉ᛶ䛾ኚ໬䛻䛴䛔䛶᳨ウ䜢⾜䛳䛯䛾䛷ሗ࿌䛩䜛䚹㸬ᐇ㦂᪉ἲ
4 ಸἼ Nd:YAG 䝺䞊䝄䞊(Ἴ㛗 266 nm)䜢⏝䛔䛶䚸SrTiO3(100)༢⤖ᬗᇶᯈୖ䛻 YBCO ⷧ⭷䜢స〇䛧䛯䚹ᇶᯈ ᗘ
900ºC䚸㓟⣲ᅽຊ 0.2 Torr䚸ᇶᯈ-䝍䞊䝀䝑䝖㛫㊥㞳 40 mm 䛭䛧䛶䝺䞊䝄䞊䜶䝛䝹䜼䞊ᐦᗘ 1.8 J/cm2 䛷ᡂ⭷䜢⾜䛳䛯䚹䝁䞁䝡䝘䝖䝸䜰䝹ἲ䛷䛿䚸YBCO 䛸 APC ῧຍ YBCO 䝍䞊䝀䝑䝖䜢⏝䛔䛯䚹BTO 䛿 5vol%䚸334 䛿 4.4vol%䛸 9vol%䜢ῧຍ䛧䛯䝍䞊䝀䝑䝖䜢⏝䛔䛯䚹స〇䛧䛯ⷧ⭷䛾㓄ྥᛶ䞉⤖ᬗᛶ䛿 X ⥺ᅇᢡἲ(XRD)䛭䛧䛶㉸ఏᑟ≉ᛶ䛿☢ሙ୰┤ὶᅄ➃Ꮚἲ䜢⏝䛔䛶ホ౯䛧䛯䚹䜎䛯䚸YBCO ⷧ⭷୰䛾 APC ῧຍ㔞䛿 SEM 䛻௜㝶䛧䛯䜶䝛䝹䜼䞊ศᩓᆺ X ⥺ศගჾ(EDX)䜢⏝䛔䛶ホ౯䛧䛯䚹㸬ᐇ㦂⤖ᯝཬࡧ⪃ᐹ䝁䞁䝡䝘䝖䝸䜰䝹ἲ䛷 BTO 䛸 334 䜢ῧຍ䛧䛯 YBCO ⷧ⭷䜢స〇䛧䛯䚹XRD 䝟䝍䞊䞁䛛䜙䚸c ㍈㓄ྥ䛧㠃ෆ䛷ᅄᅇᑐ⛠䛷䛒䜛䛣䛸䜢☜ㄆ䛧䛯䚹䜎䛯䚸ῧຍ≀䛾䝢䞊䜽䛿ほᐹ䛥䜜䛺䛛䛳
䛯䚹Fig. 1 䛻 APC ῧຍ㔞䛻ᑐ䛩䜛 YBCO ⷧ⭷䛾 Tc 䜢♧䛩䚹ẚ㍑䛾䛯䜑䚸䝁䞁䝡䝘䝖䝸䜰䝹ἲ䛷స〇䛧䛯 BSO ῧຍ YBCOⷧ⭷䛾 Tc 䜒䝥䝻䝑䝖䛧䛶䛔䜛[2]䚹ᅗ䛛䜙䚸ῧຍ㔞䛻ᑐ䛧䛶 BTO
䛜䜒䛳䛸䜒 Tc 䛜పୗ䛧䛻䛟䛔䛣䛸䛜䜟䛛䛳䛯䚹䜎䛯䚸334 䛿䜟䛪

1.0
pure
BSO (3.2vol%)334 (3.2vol%)2

Jc [MA/cm ]0.8

77 K, 1 T

0.6

0.4

0.2
B//ab

B//c

0.0
-30

0

30

60

90

Applied field angle [deg.]120

Fig.2 Jc of YBCO thin films at 77 K in 1 T as a function of
applied field angle.
䛛䛺ῧຍ䛷 Tc 䛜ᛴ⃭䛻పୗ䛧䛯䛜䚸Tc 䛿ῧຍ㔞䛻䜋䛸䜣䛹౫Ꮡ䛧䛺䛛䛳䛯䚹
Jc-B ᭤⥺䛾ホ౯䛛䜙䚸BSO 䛷䛿 3.2vol%䛷䜒䛳䛸䜒㧗䛔
Jc-B ᭤⥺䛜ᚓ䜙䜜䛯䛜䚸334 䛸 BTO 䛷䛿ῧຍ㔞䛻ᑐ䛧䛶኱䛝䛺ኚ໬䛿ぢ䜙䜜䛺䛛䛳䛯䚹Fig. 2 䛻 77 K䚸1 T 䛻䛚䛡䜛 Jc 䛾☢
ሙ༳ຍゅᗘ౫Ꮡᛶ䜢♧䛩䚹BSO 䛸ྠᵝ䛻䚸334 ῧຍ YBCOⷧ⭷䛷䜒 B//c ᪉ྥ䛷 Jc 䝢䞊䜽䛜ぢ䜙䜜䛯䚹BTO ῧຍ YBCOⷧ⭷䛻䛿 Jc 䝢䞊䜽䛿☜ㄆ䛥䜜䛺䛛䛳䛯䚹334 ῧຍ YBCO ⷧ⭷䛻䛿ఱ䜙䛛䛾 c ㍈┦㛵䝢䞁䛜⏕ᡂ䛧䛶䛔䜛ྍ⬟ᛶ䛜䛒䜛䚹ῧຍ㔞䛻ᑐ䛩䜛 Tc 䛾ኚ໬䜒䜋䛸䜣䛹䛺䛔䛣䛸䛛䜙䚸334 䛺䛹䛾 In⣔໬ྜ≀䜢䛥䜙䛻ヲ⣽䛻᳨ウ䛩䜛䛣䛸䛿᪂つ APC ᥈⣴䛻䛚䛔䛶᭷⏝䛷䛒䜛䛸⪃䛘䜙䜜䜛䚹㸬ࡲ࡜ࡵ
䝁䞁䝡䝘䝖䝸䜰䝹 Nd:YAG-PLD ἲ䜢⏝䛔䛶᪂つ APC ᮦᩱ䛾᥈⣴䜢⾜䛳䛯䚹334 䛸 BTO 䛻㛵䛧䛶䚸ῧຍ㔞䛻ᑐ䛩䜛㉸ఏᑟ≉ᛶ䜢ホ౯䛧䛯䚹BTO 䛿 BSO 䜘䜚䜒ῧຍ㔞䛻ᑐ䛩䜛 Tc 䛾పୗ䛿ᑡ䛺䛛䛳䛯䛜䚸334 䛿ῧຍ㔞䛻ᑐ䛧䛶 Tc 䛿䜋䛸䜣䛹ኚ໬䛧䛺䛛䛳䛯䚹Jc 䛾☢ሙ༳ຍゅᗘ౫Ꮡᛶ䛛䜙䚸334 ῧຍ
YBCO ⷧ⭷䛷䛿 B//c 䛷 Jc 䝢䞊䜽䛜☜ㄆ䛥䜜䛯䚹ㅰ㎡ᮏ ◊ ✲ 䛾 ୍ 㒊 䛿 䚸 ⛉ Ꮫ ◊ ✲ ㈝ ⿵ ຓ 㔠 (19676005,
20686065)䛛䜙䛾ຓᡂ䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹ཧ⪃ᩥ⊩
1. Y. Ichino, et al.: Physica C, Vol. 470 (2010) p.1234
2. Y. Ichino, et al.: IEEE Trans. Appl. Supercond., submitted
3. ྜྷᮧᣅஓ, ௚:2010 ᖺ⛅Ꮨ➨ 71 ᅇᛂ⏝≀⌮Ꮫ఍Ꮫ⾡ㅮ
₇఍䚸15a-T-2䚸㛗ᓮ኱Ꮫ䚸2010 ᖺ 9 ᭶
4. R. Kita, et al.:Physica C, Vol. 470 (2010) p.1198

Fig.1 Tc of YBCO films including APC materials as afunction of APC volume fraction.

― 17 ―

第83回

2010年度秋季低温工学・超電導学会

1A-p06

Y 系線材 (2)㻵㼚㻙㼜㼘㼡㼙㼑㻌㻼㻸㻰 ἲ䛷స〇䛧䛯 㻳㼐㻮㻯㻻 ⥺ᮦ䛾☢ሙ୰ 㻵㼏 ≉ᛶ䛸 㻮㼍㻿㼚㻻㻟 ῧຍຠᯝ㻌㻱㼒㼒㼑㼏㼠㻌㼛㼒㻌㻮㼍㻿㼚㻻㻟㻌㼍㼐㼐㼕㼠㼕㼛㼚㻌㼛㼚㻌㼠㼔㼑㻌㼕㼚㻙㼒㼕㼑㼘㼐㻌㻵㼏㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㻳㼐㻮㻯㻻㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼜㼞㼑㼜㼍㼞㼑㼐㻌㼎㼥㻌㼕㼚㻙㼜㼘㼡㼙㼑㻌㻼㻸㻰㻌㼙㼑㼠㼔㼛㼐㻌c

I (A/cm-w)

Ic(A/cm-w)

Ic(A/cm-w)⟃ᮏ㻌 ▱Ꮚ䠈䝉䝹䝀䜲䞉䝸䞊㻌 䠄㻵㻿㼀㻱㻯䠅䠗ຍ⸨㻌 ୔ᬕ㻘㻌 ᖹᒣ㻌 ྖ㻌 㻔㻶㻲㻯㻯㻕㻦㻌 ⏣㎶㻌 ᆂ୍㻌 䠄㻵㻿㼀㻱㻯䠅㻌㻯㻴㻵㻷㼁㻹㻻㼀㻻㻌㻺㼛㼞㼕㼗㼛㻘㻌㻸㻱㻱㻌㻿㼑㼞㼓㼑㼥㻌㻔㻵㻿㼀㻱㻯㻕㻘㻌㻷㻭㼀㻻㻌㼀㼍㼗㼑㼔㼍㼞㼡㻘㻌㻴㻵㻾㻭㼅㻭㻹㻭㻌㼀㼟㼡㼗㼍㼟㼍㻌㻔㻶㻲㻯㻯㻕㻧㻌㼀㻭㻺㻭㻮㻱㻌㻷㼑㼕㼕㼏㼔㼕㻌㻔㻵㻿㼀㻱㻯㻕㻌 㻌㻱㻙㼙㼍㼕㼘㻦㻌㼏㼔㼕㼗㼡㻬㼕㼟㼠㼑㼏㻚㼛㼞㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
࡟ࣈ࣮ࣟࢻ࡞ࣆ࣮ࢡࡀ࠶ࡽࢃࢀ࡚࠸ࡿࠋ7(0 ほᐹࡢ⤖ᯝࠊᡃ䚻䛿䚸ᇶᯈ䌦䝍䞊䝀䝑䝖㛫㊥㞳䜢▷䛟䛧䛶ᡂ⭷䛩䜛
%62 ῧຍヨᩱ࡟࠾࠸࡚ࡣࠊ┤ᚄ⣙ QP ࡢࢼࣀࣟࢵࢻ≧࡟㼕㼚㻙㼜㼘㼡㼙㼑㻌 㻼㻸㻰 ἲ䛾㛤Ⓨ䜢⾜䛳䛶䛚䜚䚸㻳㼐㻮㻯㻻 ⣔䛻䛚䛔䛶 㻵㼏%62 ࡀᯒฟࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡉࢀ࡚࠾ࡾࠊࡑࢀࡀ F ㍈┦
㛵ࣆࣥ࡜ࡋ࡚ຠ࠸࡚࠸ࡿࡓࡵ࡜⪃࠼ࡽࢀࡿࠋ್䛜 㻞㻜㻜㻭㻛㼏㼙㻙㼣 ௨ୖ䛾ᆒ୍㛗ᑻ⥺ᮦ㻔㻪㻡㻜㼙㻕䜢෌⌧ᛶⰋ䛟ᚓ
ࡲࡓ %62 ῧຍヨᩱ࡟ࡘ࠸࡚ࠊPKࠊ ࣃࢫᡂ⭷࡜ PKࠊ䜙䜜䜛䜎䛷䛻䛺䛳䛶䛔䜛㼇㻝㼉䚹䛺䛚䚸䛣䛣䛷 㻵㼏 ್䛿〇㐀㏿ᗘ䛻䜘㸱ࣃࢫᡂ⭷࡛ࡣࠊ㻵㼏 ࡢ☢ሙ౫Ꮡᛶࡀ␗࡞ࡾࠊᚋ⪅ࡢ᪉ࡀࡼ䜚⥺ᮦ䛾⭷ཌ䜢ኚ䛘䜛䛣䛸䛷䚸ไᚚྍ⬟䛷䛒䜛㼇㻞㼉䚹㻌୍᪉䚸㻿㻹㻱㻿 䜔㉸㟁ᑟ☢▼➼䛾ᶵჾᛂ⏝䛻䛚䛔䛶䛿䚸☢
ࡾ 㻵㼏 䛾☢⏺ゅᗘ౫Ꮡᛶ䛜పῶ䛧䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹䛣䛾䛣䛸ሙ୰ 㻵㼏 䛾ྥୖཬ䜃 㻵㼏 䛾☢⏺ゅᗘ౫Ꮡᛶ䛾పῶ䛜ᚲせ୙ྍḞ䛛䜙⥺㏿䛜᪩䛔᪉䛜䜘䜚➼᪉ⓗ䛺䝢䞁䛜ᑟධ䛥䜜䛶䛔䜛䛣䛸䛜♧၀䛥䜜䜛䚹䛷䛒䜛䚹㻵㼏 ್䛾ྥୖ䛻䛴䛔䛶䛿㻔㻝㻕ཌ⭷໬䜔䠄䠎䠅䝢䞁Ṇ䜑୰ᚰ䛾ᑟධ䛜᭷ຠ䛷䛒䜛䚹䛭䛣䛷䚸ᮏ◊✲䛷䛿䚸ཌ⭷໬䛻䜘䜛☢
㻠䠊ㅰ㎡㻌
ሙ୰ 㻵㼏 䛾ྥୖ䜢ᅗ䜛䛸䛸䜒䛻䚸㻮㼍㻿㼚㻻㻟㻌 㻔㻮㻿㻻㻕䛾ῧຍ䛻䜘䜚䝢䞁ᮏ◊✲䛿᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䠄㻺㻱㻰㻻䠅Ṇ䜑୰ᚰ䛾ᑟධ䜢ᅗ䛳䛯䛾䛷䚸䛭䛾⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌䛾ጤク䛻䜘䜚䛂䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛃䛾୍㻌⎔䛸䛧䛶ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹䛺䛚䚸ᮏ◊✲䛷⏝䛔䛯㻞䠊ᐇ㦂᪉ἲ㻌㻵㻮㻭㻰㻙㻹㼓㻻 ᇶᯈ䛾ᥦ౪䛔䛯䛰䛝䜎䛧䛯䚸㻵㻿㼀㻱㻯 䛾⥺ᮦ◊✲ᡂ ⭷ 䛻 䛿 㻯㼑㻻㻞㻛㻸㼍㻹㼚㻻㻟㻛㻵㻮㻭㻰㻙㻹㼓㻻㻛 䝝 䝇 䝔 䝻 䜲 ᇶ ᯈ㛤Ⓨ㒊䛾ⓙᵝ䛻ឤㅰ⮴䛧䜎䛩䚹㻌㻔㻵㻮㻭㻰㻙㻹㼓㻻 ᇶᯈ㻕䠄'I㻩㻠㻙㻡㼻䠅䜢⏝䛔䛯䚹㻳㼐㻮㻯㻻 ᒙ䛿 㼄㼑㻯㼘㻌䜶 䜻 䝅 䝬 䝺 䞊 䝄 䠄 䝺 䞊 䝄 䞊 䝟 䝽 䞊 䠖 ࠥ 㻢㻡㻜㼙㻶 䠅 䜢 ⏝ 䛔 䛶 䚸
60050
㻌 B =0T(self field)㼕㼚㻙㼜㼘㼡㼙㼑 㻌 ᮲ ௳ 䛷 䝬 䝹 䝏 䞊 䝥 䝹 䞊 䝮 䌦 䝬 䝹 䝏 䝍 䞊 䞁
B =3T(B //c)
a
a
a
500
40 T=77K
㻌 T=77K
㻔㻹㻼㻹㼀㻕㻙㻾㼀㻾 ᡂ⭷䜢⾜䛺䛳䛯䚹䛺䛚䚸㓟⣲ศᅽ䚸 ᗘ䛿୍ᐃ400㻌䛸䛧䚸ᇶᯈ䛾ᦙ㏦㏿ᗘ䠄⥺㏿䠅䜢 㻞㻜ࠥ㻝㻜㻜㼙㻛㼔 䛾⠊ᅖ䛷ኚ໬䛥
30䛫䛯䚹䜎䛯䝍䞊䞁ᩘ䛻䛴䛔䛶䛿䚸䠑䝍䞊䞁ᡂ⭷䛸䠒䝍䞊䞁ᡂ⭷300㻌
20䛾䠎✀㢮⾜䛺䛳䛯䚹㻌200㻌
5 turn5 turn㻌ᡂ⭷䛻䛿 㻳㼐䠖㻮㼍䠖㻯㼡㻩㻝䠖㻝㻚㻤䠖㻟 䛾⤌ᡂẚ䛾䝍䞊䝀䝑䝖䜢⏝
10
6 turn
6 turn100㻌䛔 䛯 䚹 ᚓ 䜙 䜜 䛯 ⭷ 䛾 㻵㼚㼐㼡㼏㼠㼕㼢㼑㼘㼥㻌 㻯㼛㼡㼜㼘㼑㼐㻌 㻼㼘㼍㼟㼙㼍㻙㻭㼠㼛㼙㼕㼏㻌00
0 0.5 1 1.5 2 2.5 3 3.5
㻌0 0.5 1 1.5 2 2.5 3 3.5㻱㼙㼕㼟㼟㼕㼛㼚㻌 㻿㼜㼑㼏㼠㼞㼛㼟㼏㼛㼜㼥㻌 䠄㻵㻯㻼㻙㻭㻱㻿䠅ἲ䛻䜘䜛ศᯒ⤌ᡂ䛿⥺㏿
Thickness(μm)
Thickness(μm)
㻌䛻䜘䜙䛪䚸䜋䜌 㻳㼐㻝㻚㻝㻮㼍㻝㻚㻥㻯㼡㻟㻻㼥 䛷䛒䛳䛯䚹䜎䛯䚸㻮㻿㻻 䛾ῧຍ䛿㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻔㼍㻕㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻔㼎㻕㻌 㻌䝍䞊䝀䝑䝖⤌ᡂ 㻳㼐㻮㼍㻝㻚㻤㻯㼡㻟㻻㼥 䛻ᑐ䛧䛶 㻡㼙㼛㼘䠂䛾 㻮㼍㻿㼚㻻㻟 䜢ΰ㻲㼕㼓㻚㻝㻌 㼀㼔㼕㼏㼗㼚㼑㼟㼟㻌 㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌 㼛㼒㻌 㻵㼏㻌 㼒㼛㼞㻌 㻔㼍㻕㻌 㼟㼑㼘㼒㻌 㼒㼕㼑㼘㼐㻌 㼍㼚㼐㻌 㻔㼎㻕㻌ྜ䛩䜛䛣䛸䛻䜘䛳䛶⾜䛺䛳䛯䚹స〇䛧䛯䝔䞊䝥䛿 㻭㼓 䜢 㻝㻜䃛㼙⛬ᗘ䝇䝟䝑䝍⵨╔ᚋ䚸㓟⣲Ẽὶ୰䛷䜰䝙䞊䝹ฎ⌮䜢⾜䛳䛯䚹㻮㼍㻩㻟㼀㻌㻔㻮㼍㻛㻛㼏㻕㻌㼒㼛㼞㻌㻳㼐㻮㻯㻻㻌㼠㼍㼜㼑㻌㼜㼞㼛㼏㼑㼟㼟㼑㼐㻌㼎㼥㻌㻾㼀㻾㻌㼕㼚㻙㼜㼘㼡㼙㼑㻌☢ሙ୰ ,F ᐃ䛿ᾮయ❅⣲෭༷ୗᅄ➃Ꮚἲ䛷⾜䛔䚸☢ሙ䛿䝇㻼㻸㻰㻌㼙㼑㼠㼔㼛㼐㻚㻚㻌 㻌㻌䝥䝸䝑䝖䝁䜲䝹䜢⏝䛔䛶༳ຍ䛧䛯䚹㻵㼏 ್䛿䠍䃛㼂㻛㼏㼙 䛾㟁ᅽᇶ‽㻌䛻䜘䜚Ỵᐃ䛧䛯䚹㻌140
㻳㼐㻮㻯㻻㻗㻮㻿㻻㻔㻥㻜㼙㻛㼔㼤㻟㻕㻦䖃㻌㻌㻳㼐㻮㻯㻻㻗㻮㻿㻻㻔㻟㻜㼙㻛㼔㼤㻝㻕㻦䕕120
㻌㻟䠊ᐇ㦂⤖ᯝ㻌㻳㼐㻮㻯㻻㻔㻟㻜㼙㻛㼔㼤㻝㻕㻦㽢㻌 㻌,F ≉ᛶࡢ⭷ཌ౫Ꮡᛶ
100㻝㼀㻌
)LJ ࡟㸳ࢱ࣮ࣥᡂ⭷ཬࡧ㸴ࢱ࣮ࣥᡂ⭷᫬ࡢ⮬ᕫ☢ሙ
80㻌
୰ཬࡧ㸱7 㻮㼍㻛㻛㼏 ࡟࠾ࡅࡿ ,F ್ࡢ⭷ཌ౫Ꮡᛶࢆ♧ࡍࠋ࡞60㻌࠾ࠊ⭷ཌ࡟ࡘ࠸࡚ࡣࠊᩘ✀㢮ࡢ᮲௳࡛ᡂ⭷ࡋࡓヨᩱࡢ᩿㻌㠃 7(0 ほᐹ⤖ᯝࢆࡶ࡜࡟እᤄࡋ࡚ồࡵࡓ್ࢆ⏝࠸ࡓࠋ40㻟㼀㻌࡝ࡕࡽࡢሙྜࡶ⭷ཌ࡜࡜ࡶ࡟࡯ࡰ┤⥺ⓗ࡟ቑຍࡍࡿࡀࠊ
20㻌㸱ȣP ࡢ⭷ཌ࡛ࡣഴࡁࡀࡸࡸᑠࡉࡃ࡞ࡗ࡚࠾ࡾࠊࡑࢀ௨ୖ
㻌ࡢ⭷ཌ࡛ࡣ㣬࿴ഴྥ࡟࠶ࡿࡇ࡜ࡀ♧၀ࡉࢀࡿࠋ
0
135
180
225
㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌0㻌 㻌 㻌 㻌 㻌 㻌45㻌 㻌 㻌 㻌 㻌 㻌 90㻌㻌㻌㸦㸰㸧㻮㼍㻿㼚㻻㻟 ῧຍຠᯝ4(°)
㻌 )LJ ࡟ *G%&2 ヨᩱ࡜ %62 ῧຍ *G%&2 ヨᩱࡢ . ࡟࠾ࡅ㻲㼕㼓㻚㻞㻌㻱㼒㼒㼑㼏㼠㻌㼛㼒㻌㻮㻿㻻㻌㼍㼐㼐㼕㼠㼕㼛㼚㻌㼛㼚㻌㼠㼔㼑㻌㼒㼕㼑㼘㼐㻌㼍㼚㼓㼡㼘㼍㼞㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌ࡿ 㻵㼏 ࡢ☢⏺ゅᗘ౫Ꮡᛶࢆ♧ࡍࠋ%62 ῧຍヨᩱ࡟ࡘ࠸࡚ࡣࠊ
㼛㼒㻌㻵㼏㻌㼍㼠㻌㻣㻣㻌㻷㻌㼒㼛㼞㻌㻳㼐㻮㻯㻻㻌㼠㼍㼜㼑㻌㼜㼞㼛㼏㼑㼟㼟㼑㼐㻌㼎㼥㻌㻾㼀㻾㻌㼕㼚㻙㼜㼘㼡㼙㼑㻌㻼㻸㻰㻌〇㐀᫬ࡢ⥺㏿ࢆኚ࠼ࡓ㸰✀㢮ࡢヨᩱ࡟ࡘ࠸࡚ࡢ≉ᛶࢆẚ
㍑ࡢࡓࡵ࡟♧ࡋࡓࠋ࡞࠾ࠊ࠸ࡎࢀࡢヨᩱࡶ〇㐀㏿ᗘ㸦⥺㼙㼑㼠㼔㼛㼐㻚㻌 㻌㏿¹ࣃࢫᩘ㸧ࡣ PK ࡛ྠࡌ࡛࠶ࡾࠊ⭷ཌࡣ࡯ࡰྠࡌ࡛㻌࠶ࡿࠋ㻌ࡲࡎ PKࠊ ࣃࢫᡂ⭷ࡢヨᩱࢆẚ㍑ࡍࡿ࡜ࠊ*G%&2 ヨཧ⪃ᩥ⊩㻌ᩱࡣ☢ሙࢆ DE ᪉ྥ࡟༳ຍࡋࡓ᫬㸦Ȁ r㸧࡟ 㻵㼏 ࡢࣆ࣮㻝㻚㻌 㻺㻚㻌㻯㼔㼕㼗㼡㼙㼛㼠㼛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㻤㻜㻌㻔㻞㻜㻜㻥㻕㻌㼜㻚㻝㻝㻢㻌ࢡࢆ࡜ࡾࠊF ㍈᪉ྥ࡟☢ሙࢆഴࡅ࡚⾜ࡃ࡟ᚑ࠸ࠊ࡯ࡰ༢ㄪ㻞㻚㻌 㻺㻚㻌㻯㼔㼕㼗㼡㼙㼛㼠㼛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࡟ῶᑡࡍࡿࡢ࡟ᑐࡋࠊ%62 ῧຍヨᩱ࡛ࡣࠊȀ rࡢࣆ࣮㻤㻝㻌㻔㻞㻜㻜㻥㻕㻌㼜㻚㻝㻠ࢡࡀ࡞ࡃ࡞ࡾ F ㍈᪉ྥ࡟☢ሙࢆ༳ຍࡋࡓ᫬㸦Ȁ r㸧― 18 ―

第83回

2010年度秋季低温工学・超電導学会

1A-p07

Y 系線材 (2)< ⣔㉸㟁ᑟ⥺ᮦࡢ࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢຍᕤࡢṌ␃ࡾྥୖ
3URJUHVVLQPXOWLILODPHQWDU\SURFHVVIRUFRDWHGFRQGXFWRUV㻌⏫㻌 ᩗே䠈୰ᑿබ୍䠈⏣㎶ᆂ୍䠄㉸㟁ᑟᕤᏛ◊✲ᡤ䠅㻌㼀㼍㼗㼍㼠㼛㻌㻹㻭㻯㻴㻵䠈㻌㻷㼛㼕㼏㼔㼕㻌㻺㼍㼗㼍㼛㻘㻌㻷㼑㼕㼕㼏㼔㼕㻌㼀㻭㻺㻭㻮㻱㻌㻔㻿㻾㻸㻙㻵㻿㼀㻱㻯㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼙㼍㼏㼔㼕㻬㼕㼟㼠㼑㼏㻚㼛㼞㻚㼖㼜㻌㻌㸬ࡣࡌࡵ࡟
FRDWHGFRQGXFWRUV ࢆ஺ὶ㟁ຊᶵჾ࡟ᛂ⏝ࡍࡿࡓࡵ࡟ࡣ㸪࣐ࣝࢳࣇ࢕࣓ࣛࣥࢺ໬࡟ࡼࡾ஺ὶᦆኻࢆపῶࡋ࡞ࡅࢀࡤ࡞ࡽ
࡞࠸ࠋࡇࢀࡲ࡛ሗ࿌ࡋࡓࡼ࠺࡟㸪ᡃࠎࡣᚑ᮶ࡢ࣮ࣞࢨ࣮ࢫࢡ
ࣛ࢖ࣅࣥࢢἲࢆᨵⰋࡋ࡚㸪6KDOORZODVHUVFULELQJ㸦ὸ࠸࣮ࣞࢨ࣮↷ᑕ㸧࠾ࡼࡧ  ẁ㝵࢚ࢵࢳࣥࢢ࡟ࡼࡾ㸪ࣇ࢕࣓ࣛࣥࢺ
㛫᢬ᢠࢆ☜ಖࡋࡘࡘ㸪⁁ᖜ wP㸪࢚ࢵࢳࣥࢢ᫬㛫⣙㸪ຍᕤ࡟ࡼࡿ ,F ࡢపୗ⋡ࡣ ࡜࠸࠺ᢏ⾡ࢆ㛤Ⓨࡋࡓࠋ௒ᅇࡣ㸪㛗ᑻ⥺ᮦࡢຍᕤࢆྍ⬟࡜ࡍࡿࡓࡵ࡟Ṍ␃ࡾࢆྥୖࡍࡿࡓࡵࡢᨵⰋࢆ⾜ࡗࡓ⤖ᯝ࠾ࡼࡧ P 㛗ࢆ㉺࠼ࡿຍᕤࡢ⤖ᯝࢆሗ࿌ࡍࡿࠋ
㸬ᐇ㦂᪉ἲ
ຍᕤᐇ㦂࡟⏝࠸ࡓ㉸㟁ᑟ⥺ᮦࡣ PP ᖜ࡛㸪ࣁࢫࢸࣟ࢖ᇶᯈ
࡟ *=2 ,%$' &H2 3/' ࡢࣂࢵࣇ࢓ᒙୖ࡟ᙧᡂࡉࢀࡓ 3/'⥺ᮦ࠶ࡿ࠸ࡣ 7)$02' ࡛࠶ࡿࠋ
ࢫࢡࣛ࢖ࣅࣥࢢࡢṌ␃ࡾࢆྥୖࡍࡿࡓࡵ࡟㸪ࡇࢀࡲ࡛ࡢ
ᨵⰋᆺࡢ࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢ࡟㸪Ὑίᕤ⛬ࢆ㏣ຍࡋࡓࠋ
࣐ࢫࢡࢸ࣮ࣉࡢ㈞௜ࡅ࡛ࡍࡁࡲࡀ⏕ࡌࡿ࡜࣮࢜ࣂ࣮࢚ࢵࢳࣥ
ࢢࡢ༴㝤ᛶࡀ㧗ࡲࡿྍ⬟ᛶࡀ࠶ࡿࡢ࡛㸪࣐ࢫࢡࢸ࣮ࣉࡢ㈞௜
ࡅᕤ⛬ࡢ๓࡟࢔ࢭࢺࣥࡢ㉸㡢ἼὙίࡢᕤ⛬ࢆ㏣ຍࡋࡓࠋḟ࡟㸪࣮ࣞࢨ࣮↷ᑕᚋࡢ⁁ෆ࡟࣐ࢫࢡࢸ࣮ࣉࡢ⢓╔ᮦࡀṧ␃ࡋ࡚࠸ࡿ࡜࢚ࢵࢳࣥࢢ୙Ⰻࡀ⏕ࡌࡿྍ⬟ᛶࡀ࠶ࡿࡢ࡛㸪⏺㠃άᛶ๣࡟ࡼࡿ㉸㡢ἼὙίࢆ㏣ຍࡋࡓࠋࡉࡽ࡟㸪࢚ࢵࢳࣥࢢᚋ࠾ࡼࡧ
࣐ࢫࢡࢸ࣮ࣉࡢ㝖ཤᚋ࡟ࡶὙίᕤ⛬ࢆ㏣ຍࡋࡓࠋࡑࡢ⤖ᯝ㸪ᅗ㸯࡟♧ࡍࡼ࠺࡞ᕤ⛬࡜࡞ࡗࡓࠋ

ࢡࣛ࢖ࣅࣥࢢࢆ⾜ࡗࡓ⤖ᯝࢆᅗ㸰࡟♧ࡍࠋຍᕤ๓ࡢ ,F ࡀ$ ࡜ప࠸ࡓࡵࣇ࢕࣓ࣛࣥࢺẖࡢ ,F ࡣప࠸ࡀ㸪ࣇ࢕࣓ࣛࣥ
ࢺ㛫᢬ᢠࡣᖹᆒ 0ȐFP ࡜࡞ࡾ㸪஺ὶᦆኻࡶᅗ㸱࡟♧ࡍࡼ࠺࡟ࣄࢫࢸࣜࢩࢫᦆኻ࡛஬ศࡢ୍௨ୗ࡟పῶ࡛ࡁࡓࠋྠᵝࡢࣉࣟࢭࢫࢆ⏝࠸࡚ P ࠿ࡽ P ࡲ࡛ࡢ㛗ᑻ⥺ᮦ࡛ࡢຍᕤࢆ⾜ࡗࡓ⤖ᯝࢆ⾲㸯࡟♧ࡍࠋࡇࢀࡲ࡛ࡢṌ␃ࡾࡣ⣙ ࡛࠶ࡗ
ࡓࡀ㸪Ὑίᕤ⛬ࢆ㏣ຍࡋࡓ᪂ࡋ࠸ࣉࣟࢭࢫ࡟ࡼࡾ⣙ ࡲ࡛
ྥୖࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋ㸬ㅰ㎡ᮏ◊✲ࡣ㸪᪂࢚ࢿࣝࢠ࣮⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ 1('2 ࡢጤクࢆཷࡅ࡚ᐇ᪋ࡋࡓࡶࡢ࡛࠶ࡿࠋᅗ  P 㛗ࡢ 3/' ⥺ᮦࡢ࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢ๓ᚋࡢ ,Fᅗ㸯 Ṍ␃ࡾྥୖࡢࡓࡵࡢ࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢࡢᕤ⛬㸬ᐇ㦂⤖ᯝ࡜⪃ᐹྛᕤ⛬ᚋ࡟ගᏛ㢧ᚤ㙾࡟ࡼࡿほᐹࢆ⾜ࡗࡓ⤖ᯝ㸪࣮ࣞࢨ̿↷ᑕᚋࡢྛᕤ⛬ᚋ࡟ගᏛ㢧ᚤ㙾࡟ࡼࡿほᐹࢆ⾜ࡗࡓ⤖ᯝ㸪࣮ࣞࢨ̿↷ᑕᚋࡢ⏺㠃άᛶ๣࡟ࡼࡿ㉸㡢ἼὙί࡟ࡼࡾ⁁ෆ࡟ṧ␃ࡋࡓ⢓╔ᮦࡀῶᑡࡋ㸪࢚ࢵࢳࣥࢢ୙Ⰻ࡟ࡼࡿࣇ࢕࣓ࣛࣥ
ࢺ㛫⤯⦕ࡢ୙Ⰻࡀపῶ࡛ࡁࡓࠋ ᅗ㸯ࡢ᪂ࡋ࠸ᕤ⛬࡟ࡼࡗ࡚ P 㛗ࡢ 3/' ⥺ᮦࡢ࣮ࣞࢨ࣮ࢫᅗ  P 㛗  ศ๭ 3/' ⥺ᮦࡢࣄࢫࢸࣜࢩࢫᦆኻࡢኚ໬⾲㸯 㛗ᑻ⥺ᮦࡢ࣮ࣞࢨ࣮ࢫࢡࣛ࢖ࣅࣥࢢຍᕤࡢṌ␃ࡾ



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㻣㻜㻚㻜

― 19 ―

㻖㻖㻖ၥ㢟䛒䜛⟠ᡤ

第83回

2010年度秋季低温工学・超電導学会

1A-p08

Y 系線材 (2)㼀㻲㻭䠉㻹㻻㻰 ἲ䛻䜘䜛 㼅㻮㻯㻻 ⥺ᮦస〇䛻䛚䛡䜛⤖ᬗᡂ㛗ᶵᵓ㻌㻿㼠㼡㼐㼥㻌㼛㼚㻌㼏㼞㼥㼟㼠㼍㼘㻌㼓㼞㼛㼣㼠㼔㻌㼛㼒㻌㼅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㼐㼑㼞㼕㼢㼑㼐㻌㼒㼞㼛㼙㻌㼀㻲㻭㻙㻹㻻㻰㻌㼙㼑㼠㼔㼛㼐㻌୰ᒸ㻌 ᫭୍䠈ྜྷ✚㻌 ṇ᫭㻘㻌 ⷧ஭㻌 ཭⣖Ụ䠈࿴Ἠ㻌 ㍤㑻䠈ሷཎ㻌 ⼥㻌 䠄㉸㟁ᑟᕤᏛ◊✲ᡤ䠅㻌㻺㻭㻷㻭㻻㻷㻭㻌㻷㼛㼕㼏㼔㼕䠈㻌 㼅㻻㻿㻴㻵㼆㼁㻹㻵㻌㻹㼍㼟㼍㼠㼑㼞㼡㻘㻌㼁㻿㼁㻵㻌㼅㼡㼗㼕㼑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㻌㻔㻿㻾㻸㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㼚㼍㼗㼍㼛㼗㼍㻬㼕㼟㼠㼑㼏㻚㼛㼞㻚㼖㼜㻌㻟䠊⤖㻌 ᯝ㻌ᮏ↝⇕ฎ⌮᫬䛾ಖᣢ᫬㛫䛸䜽䜶䞁䝏⭷䛾⮫⏺㟁ὶ(Ic)≉ᛶ䛸䛾㛵ಀ䜢ᅗ 1 䛻♧䛩䠊Stoichiometric 䛚䜘䜃 Ba-deficientཎᩱ⁐ᾮ䛻䛚䛔䛶䠈ಖᣢ᫬㛫 100 min 䛷 Ic ್䛿䜋䜌᭱㧗್䛻 㐩 䛧 䠈 䛭 䜜 䛮 䜜 270 䛚 䜘 䜃 298 A/cm-w 䜢 ♧ 䛧 䛯 䠊
Stoichiometric ཎᩱ⁐ᾮ䜢⏝䛔䛯ሙྜ䠈ಖᣢ᫬㛫䜢䛥䜙䛻ቑຍ䛥䛫䜛䛸 Ic ≉ᛶ䛾ⴭ䛧䛔పୗ䛜ぢ䜙䜜䛯䠊䜽䜶䞁䝏⭷䛾
XRD
ᐃ䠄䃗-2䃗䠅䜢⾜䛔䠈BaF2 䛾(111)㠃䛾ᅇᢡᙉᗘ䜢ಖᣢ᫬㛫䛾㛵ᩘ䛸䛧䛶䝥䝻䝑䝖䛧䛯䜒䛾䜢ᅗ 2 䛻♧䛩䠊ಖᣢ᫬㛫䛾ቑຍ䛻క䛔 BaF2 ᅇᢡᙉᗘ䛜ῶᑡ䛧䛶䛚䜚䠈YBCO 䛾ᙧᡂ䛜㐍⾜䛧䛶䛔䜛ศ䛛䜛䠊Stoichiometic ཎᩱ⁐ᾮ䛾ሙྜ䠈Ic ್䛜᭱㧗್䛻㐩䛧䛯 100 min 䛻䛚䛔䛶䛿䠈䜎䛰 BaF2 䛜Ꮡᅾ䛧䛶䛚䜚཯ᛂ㏵୰䛷䛒䜛䛣䛸䛜ศ䛛䜛䠊୍᪉䠈Ba-deficient ཎᩱ⁐ᾮ䛾ሙྜ䠈ྠ᫬Ⅼ䛷 BaF2 䛾ᅇᢡ䝢䞊䜽䛿ᾘኻ䛧䛶䛔䜛䠊௨๓䛾◊✲䜘䜚䠈TFA-MOD ἲ䛷䛾 YBCO 䛾⤖ᬗᡂ㛗䛿䠈䐟 ᮍ཯ᛂ≀䠄㓟໬䝣䝑໬≀䠅䜔✵Ꮝ䠄䝫䜰䠅䜢ྲྀ䜚㎸䜏䛺䛜䜙䠈ᇶᯈ䛛䜙䛾 layer-by-layer ᵝᘧ䛷䛾䜶䝢䝍䜻䝅䝱䝹ᡂ㛗䠈䐠 Ỉ⵨

350
300
250
Ic (A/cm-w)

㻞䠊ᐇ㻌 㦂㻌
Y-䠈Ba-䝖䝸䝣䝹䜸䝻㓑㓟䠈Cu-2-䜶䝏䝹䝦䜻䝃䞁㓟䜢 Y 䠖
Ba 䠖 Cu = 1.0 䠖 2.0 䠖 3.0䠄Stoichiometric䠅䛚䜘䜃 Y 䠖
Ba 䠖 Cu = 1.0 䠖 1.5 䠖 3.0䠄Ba-deficient䠅䛾䝰䝹ẚ䛷᭷ᶵ⁐፹䛻⁐ゎ䛥䛫䛯䜒䛾䜢ཎᩱ⁐ᾮ䛸䛧䛯䠊䛣䛾ཎᩱ⁐ᾮ䜢䝇䝢䞁䝁䞊䝖䛻䜘䜚 CeO2䠄PLD䠅/LaMnO3䠄RF 䝇䝟䝑䝍䠅/MgO䠄IBAD䠅
/Gd2Zr2O7 䠄䜲䜸䞁䝡䞊䝮䝇䝟䝑䝍䠅/䝝䝇䝔䝻䜲 TM 㔠ᒓᇶᯈ
䠄10×20 mm2䠅 䛻ሬᕸ䛧䠈㓟⣲㞺ᅖẼୗ䠈5䉝/min 䛾᪼ ㏿
ᗘ䛷䠈300䉝䛛䜙Ỉ⵨Ẽ䠄P(H2O) = 3 kPa 䠅䜢ᑟධ䛧䛴䛴500䉝䜎䛷ຍ⇕䛩䜛䛣䛸䛷 Y-Ba-Cu ๓㥑య⭷䜢ᡂ⭷䛧䛯䠊䜎䛯䠈䝇䝢䞁䝁䞊䝖䛚䜘䜃௬↝ᡂ䛾᧯స䜢 5 ᅇ⧞䜚㏉䛩䛣䛸䛷 0.8 䃛m 䛾⭷ཌ䠄YBCO䠅䜢ᚓ䛯䚹䛣䛾 5 ᒙ䛛䜙䛺䜛๓㥑య⭷䜢
P(H2O) = 12 kPa䠈P(O2) = 0.1 kPa 䛻ㄪᩚ䛧䛯䜰䝹䝂䞁㞺ᅖẼୗ䛻䛚䛔䛶䠈760䉝䛷ᮏ↝⇕ฎ⌮䛩䜛䛣䛸䛷 YBCO ⭷䜢ᚓ䛯䠊ᮏ◊✲䛷䛿䠈YBCO 䛾⤖ᬗᡂ㛗㐣⛬䜢ほᐹ䛩䜛䛯䜑䠈ᮏ↝⇕ฎ⌮᫬䛻ᡤᐃ䛾ಖᣢ᫬㛫䛷ᛴ෭䠄䜽䜶䞁䝏䠅᧯స䜢⾜䛖䛣䛸䛻䜘䜚䜽䜶䞁䝏⭷䜢స〇䛧䛯䠊Ẽ䛸ᮍ཯ᛂ≀䛚䜘䜃ᮍ཯ᛂ≀ྠኈ䛻䜘䜛ᅛ┦཯ᛂ䛾 2 ẁ㝵䜢⤒䜛䛣䛸䛜ศ䛛䛳䛶䛔䜛 [2]䠊䜽䜶䞁䝏⭷䛾᩿㠃 SEM ほᐹ䛻 䜘 䜚 䠈 䜶 䝢 䝍 䜻 䝅 䝱 䝹 ᡂ 㛗 㐣 ⛬ 䛻 䛚 䛡 䜛 YBCO 䛾
layer-by-layer ᡂ㛗㏿ᗘ䜢 Stoichiometric 䛚䜘䜃 Ba-deficientཎᩱ⁐ᾮ䜢⏝䛔䛯ሙྜ䛻䛴䛔䛶ẚ㍑䛧䛯⤖ᯝ䠈୧⪅䛻㐪䛔䛿䛺䛛䛳䛯䠊䛣䜜䜘䜚䠈Ba-deficient ཎᩱ⁐ᾮ䜢⏝䛔䛯ሙྜ䠈䜶䝢䝍䜻䝅䝱䝹ᡂ㛗ẁ㝵䛻䛚䛡䜛ᮍ཯ᛂ≀䛾ྲྀ䜚㎸䜏䛜ῶᑡ䛩䜛䛯䜑ᅛ┦཯ᛂ㐣⛬䛜Ṥ䛹㉳䛣䜙䛺䛔䛣䛸䛜⪃䛘䜙䜜䜛䠊䜎
䛯䠈Stoichiometric ཎᩱ⁐ᾮ䛻䛚䛔䛶䛾䜏䠈XRDᐃ䛻䜘䜚ᅛ┦཯ᛂ㐣⛬䛷 BaCuO2 䛜ᙧᡂ䛥䜜䠈Ic ≉ᛶపୗ䛻క䛔ቑຍ䛩䜛஦䛜ศ䛛䛳䛯䠊䛣䜜䛛䜙䠈ཎᩱ⁐ᾮ⤌ᡂ䛻䜘䜚ᙳ㡪䜢ཷ䛡䜛ᅛ┦཯ᛂ᫬䛻䛿 YBCO 䛾䜏䛺䜙䛪 BaCuO2 ┦䛜ᙧᡂ䛥䜜䠈䛣䜜䛜 Ic ≉ᛶపୗ䛾ཎᅉ䛾୍䛴䛻䛺䜛䛸⪃䛘䜙䜜䜛䠊

200
150
100

StoichiometricBa-deficient

50
0

0

20

40

60
80 100 120
Holding time (min)

140

160

180

ᅗ 㻝㻚㻌 ᮏ↝᫬䛾ಖᣢ᫬㛫䛸 㻵㼏 ್䛸䛾㛵ಀ㻌
108
Intensity (kcps)

㻝䠊䛿䛨䜑䛻㻌
YBa2Cu3O7-y䠄YBCO䠅⥺ᮦస〇ἲ䛸䛧䛶䠈ฟⓎཎᩱ䛻䝖䝸䝣䝹 䜸 䝻 㓑 㓟 䠄 TFA 䠅 ሷ 䜢 ⏝ 䛔 䛯 㔠 ᒓ ᭷ ᶵ 㓟 ሷ ሁ ✚ ἲ䠄TFA-MOD ἲ䠅䛿䠈㠀┿✵䝥䝻䝉䝇䛷ẚ㍑ⓗᐜ᫆䛻㧗䛔⮫⏺㟁ὶᐦᗘ≉ᛶ䜢ᚓ䜛䛣䛸䛜ྍ⬟䛺䛯䜑䠈⥺ᮦస〇䛾ప䝁䝇䝖໬䛜ᮇᚅ䛷䛝䜛ᡭἲ䛷䛒䜛䠊ᡃ䚻䛿䠈TFA-MOD ἲ䛻䜘䜛
YBCO ⥺ᮦస〇䛻䛚䛔䛶䠈ཎᩱ⁐ᾮ⤌ᡂ䜢ᚑ᮶䛾 Y : Ba :Cu = 1.0 : 2.0 : 3.0䠄Stoichiometric䠅䛛䜙 Y : Ba : Cu = 1.0 :1.5 : 3.0䠄Ba-deficient䠅䛻䛩䜛䛣䛸䛻䜘䜚䠈⮫⏺㟁ὶᐦᗘ≉ᛶ䛾ྥୖ䛚䜘䜃䝥䝻䝉䝇䜴䜱䞁䝗䜴䜢ᗈ䛢䜛䛣䛸䛻ᡂຌ䛧䛯 [1]䚹ᮏ◊✲䛷䛿 TFA-MOD ἲ䛻䛚䛔䛶䠈ཎᩱ⁐ᾮ⤌ᡂ䛜㉸㟁ᑟ≉ᛶ䜢ኚ໬䛥䛫䜛䝯䜹䝙䝈䝮䜢᫂䜙䛛䛻䛩䜛䛯䜑䛻䠈
YBCO 䛾⤖ᬗᡂ㛗㐣⛬䛻䛴䛔䛶ㄪ䜉䛯䠊

StoichiometricBa-deficient

6
4
2
0

0

20

40

60
80
100 120
Holding time (min)

140

160

180

ᅗ 㻞㻚㻌 ᮏ↝᫬䛾ಖᣢ᫬㛫䛸 㻮㼍㻲㻞㻌㻔㻝㻝㻝㻕㠃䛾ᅇᢡᙉᗘ䛸䛾㛵ಀ㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌 K. Nakaoka, et al.: Physica C, Vol. 463-465 (2007) p.516
㻞㻚㻌 J. S. Matsuda, et al.: Physica C, Vol. 412-414 (2004) p.890
ㅰ㻌 ㎡㻌ᮏ◊✲䛿᪂䜶䝛䝹䜼䞊⏘ᴗᢏ⾡㛤Ⓨᶵᵓ䠄㻺㻱㻰㻻䠅䛾ጤク䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䠊㻌― 20 ―

第83回

2010年度秋季低温工学・超電導学会