2A-a01

Bi 系線材 (2)㻰㻵㻙㻮㻿㻯㻯㻻㼹⥺ᮦ䛾 㻵㼏 ᨵၿ≧ἣ㻌㻾㼑㼏㼑㼚㼠㻌㼕㼙㼜㼞㼛㼢㼑㼙㼑㼚㼠㻌㼕㼚㻌㼏㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㻰㻵㻙㻮㻿㻯㻯㻻㼹㻌㼣㼕㼞㼑㻌㻌⳥ᆅ㻌 ᫀᚿ䠈㻌 ᑠᯘ㻌 ៅ୍㻘㻌 㘽ᒣ㻌 ▱ᏹ㻘㻌 ᒣᓮ㻌 ᾈᖹ㻘㻌 ᒣฟ㻌 ဴ㻘㻌 ୰ᓥ㻌 㝯ⰾ㻘㻌ᯘ㻌 ࿴ᙪ㻘㻌 బ⸨㻌 ㅬ୍䠄ఫ཭㟁ᕤ䠅䠗㻌 ໭ཱྀ㻌 ோ䠄㻺㻵㻹㻿䠅㻧㻌 ୗᒣ㻌 ῟୍䠄ᮾ኱䠅㻌㻷㻵㻷㼁㻯㻴㻵㻌㻹㼍㼟㼍㼟㼔㼕㻘㻌㻷㻻㻮㻭㼅㻭㻿㻴㻵㻌㻿㼔㼕㼚㼕㼏㼔㼕㻘㻌㻷㻭㻳㻵㼅㻭㻹㻭㻌㼀㼛㼙㼛㼔㼕㼞㼛㻘㻌㼅㻭㻹㻭㼆㻭㻷㻵㻌㻷㼛㼡㼔㼑㼕㻘㻌㼅㻭㻹㻭㻰㻱㻌㻿㼍㼠㼛㼞㼡㻘㻌 㻌㻺㻭㻷㻭㻿㻴㻵㻹㻭㻌㼀㼍㼗㼍㼥㼛㼟㼔㼕㻘㻌㻴㻭㼅㻭㻿㻴㻵㻌㻷㼍㼦㼡㼔㼕㼗㼛㻘㻌㻿㻭㼀㻻㻌㻷㼑㼚㼕㼏㼔㼕㻌㻔㻿㼡㼙㼕㼠㼛㼙㼛㻌㻱㼘㼑㼏㼠㼞㼕㼏㻕㻧㻌 㻌㻷㻵㼀㻭㻳㼁㻯㻴㻵㻌㻴㼕㼠㼛㼟㼔㼕㻌㻔㻺㻵㻹㻿㻕㻧㻌㻿㻴㻵㻹㻻㼅㻭㻹㻭㻌㻶㼡㼚㼕㼏㼔㼕㻌㻔㼀㼛㼗㼥㼛㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㼕㼗㼡㼏㼔㼕㻙㼙㼍㼟㼍㼟㼔㼕㻬㼟㼑㼕㻚㼏㼛㻚㼖㼜㻌㻌䠍䠊䛿䛨䜑䛻㻌
䠏䠊㻰㻵㻙㻮㻿㻯㻯㻻㻌㼀㼥㼜㼑㻌㻴 䛾 㻵㼏 ᨵၿ≧ἣ㻌ᙜ♫ࡣࠊ ᖺ࡟ %L ㉸㟁ᑟ⥺ᮦస〇ࣉࣟࢭࢫ࡟ຍ
)LJ ࡟♧ࡍ㏻ࡾࠊ▷ᑻヨᩱࡢ ,F ᨵၿ࡟క࠸ 7\SH+ᅽ↝ᡂἲࢆᑟධࡋ࡚௨㝆ࠊ㧗 ,F ໬㛤Ⓨࢆຍ㏿ࡋ࡚࠸ࡿࠋ
ࡢ ,F ࡟ࡶ኱ࡁ࡞ᡂᯝࡀฟ࡚࠸ࡿࠋ ᖺ  ᭶࡟ࡣࠊ7\SHᙜ♫ࡢᶆ‽〇ရ࡛࠶ࡿ ',%6&&2p7\SH+ ⥺ᮦ᩿㠃✚ࡀ+ ᆺࡢ㛗ᑻヨస⥺ᮦ࡟࠾࠸࡚ ,F $ P ࠊ$ P
⣙ PP ࡛ࡣࠊ,F $ ⣭ࡢᛶ⬟ࡀ᭱㛗 NP ࡟ரࡗ࡚ᚓࡽ
ࡢ≉ᛶࡀ☜ㄆࡉࢀ࡚࠾ࡾࠊ,F!$ ࢆ᭷ࡍࡿ NP ⣭ 7\SH+ࢀ࡚࠸ࡿࡀࠊᙜ♫⥺ᮦࢆ㐺⏝ࡋࡓ㉸㟁ᑟᶵჾ࡟࠾࠸࡚ᢏ
ရࢆ㏆ࡃ〇ရ໬ணᐃ࡛࠶ࡿࠋ
⾡ⓗࡶࡋࡃࡣ⤒῭ⓗ࡞ඃ఩ᛶࢆ㧗ࡵࡿࡓࡵ࡟ࡣࠊࡉࡽ࡞
ࡿ ,F ྥୖࡀᚲせ࡜ࡉࢀ࡚࠸ࡿࠋ ᖺ࡟స〇ࡋࡓࠊ㖟ẚࢆపῶࡋ࠿ࡘ᩿㠃✚ࢆ኱ࡁࡃࡋࡓ▷ᑻヨᩱ࡛ࡣࠊࡑࢀࡲ
࡛ࡢ᭱㧗್ࢆ $ ୖᅇࡿ ,F $ ࢆᚓࡓ>@ࡶࡢࡢࠊ-F ࡢ᰿ᮏⓗ࡞ᨵၿ࡟⧅ࡀࡿ᭷⏝࡞ᣦ㔪ࢆᚓࡿࡇ࡜ࡀ࡛ࡁ࡞࠿
ࡗࡓࠋࡇࢀࢆཷࡅࠊࡉࡽ࡟㧗 ,F໬㛤Ⓨࢆಁ㐍ࡍࡿࡓࡵࠊ
-F ࢆᨭ㓄ࡍࡿᅉᏊ ⤖ᬗ㓄ྥᛶࠊ㉸㟁ᑟᛶࠊ⢏᥋ྜᛶ ࡢᨵၿ࡟ὀຊࡋ࡚࠸ࡿࠋ
%L ⥺ᮦࡢ 7F ࡜⇕ฎ⌮᮲௳࡜ࡢ㛵㐃ࢆㄪᰝࡋࡓ⤖ᯝ
࡜ࡋ࡚ࠊ7F ࡢୖࡀࡾࡸࡍ࠸᮲௳ୗ࡛ %L ⥺ᮦࢆ⇕ฎ⌮ࡋࡓሙྜࠊࣇ࢕࣓ࣛࣥࢺ୰࡟ 3E ┦ࡀᯒฟࡍࡿ⌧㇟ࡀሗ࿌ࡉࢀ࡚࠸ࡿ>@ࠋ3E ┦ࡣ %L ┦ࡢ⢏⏺࡟ἢࡗࡓᯒฟࡍࡿࡓࡵࠊⴭࡋࡃ %L ┦ࡢ⢏㛫≉ᛶࢆపୗࡉࡏ
ࡿࠋ㉸㟁ᑟᛶ࡜⢏᥋ྜᛶࡢᨵၿࡉࡏࡿࡓࡵ࡟ࡣࠊ3E┦ࢆᯒฟࡉࡏࡎ࡟ %L ┦ࡢ 7F ࢆྥୖࡉࡏࡿࡇ࡜ࡀᚲせ࡛࠶ࡾࠊ3,7 ࣉࣟࢭࢫ඲య࡟ரࡗ࡚〇㐀᮲௳ࡢ᭱㐺໬ࢆ㐍ࡵࡓࠋ㻲㼕㼓㻚㻌㻝㻌㻹㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㼏㼡㼞㼢㼑㼟㻌㼛㼒㻌㼠㼔㼑㻌㼟㼠㼍㼚㼐㼍㼞㼐㻌㼀㼥㼜㼑㻌㻴㻌㼣㼕㼞㼑㻌㼍㼚㼐㻌㼠㼔㼑㻌㼠㼞㼕㼍㼘㻌㼟㼔㼛㼞㼠㻌㼟㼍㼙㼜㼘㼑㻌㼣㼕㼠㼔㻌㻵㼏㻌㼛㼒㻌㻞㻠㻝㻭㻌䠎䠊▷ᑻヨᩱ䛻䛚䛡䜛 㻵㼏 ᨵၿ≧ἣ㻌
3,7 ࣉࣟࢭࢫࡢ᭱㐺໬ࢆ㐍ࡵࡓ⤖ᯝࠊ7\SH+ ௙ᵝࡢ୰ᚰ್௜㏆ࡢᖜࠊཌࡳࢆ᭷ࡍࡿ P 㛗ヨᩱ ௨ୗ$ ࡟࠾࠸࡚ࠊ ᖺ  ᭶࡟ ,F $ ࢆ㐩ᡂࡋࡓࠋᮏヨᩱࡢ -F ࡣࡇࢀࡲ࡛ࡢ᭱㧗್ N$FP ࠿ࡽ N$FP ࡟ᨵၿࡉࢀࡓࠋ)LJ ࡟ࠊ$ ࡢ ,F ࢆ᭷ࡍࡿ 7\SH+ ࠿ࡽ᥇ྲྀࡋࡓヨᩱ࡜$ࡢ཯☢ᛶ☢໬᭤⥺ࢆ♧ࡍࠋ. ࡢ☢໬⋡࡟ᑐࡋ࡚ ࡢ
☢໬⋡࡜࡞ࡿ ᗘ࡛ᐃ⩏ࡋࡓ 7F ࡣࠊ๓⪅ࡀ . ࡛࠶ࡿࡢ࡟ᑐࡋ࡚ᚋ⪅࡛ࡣ . ࡟ྥୖࡋ࡚࠸ࡿࠋࡲࡓࠊ$ ࡢ ;⥺ᅇᢡ࡟ࡼࡿᵓᡂ┦ศᯒ࡞ࡽࡧ࡟ 6(0 ほᐹࢆ⾜ࡗࡓ⤖ᯝࠊ⢏᥋ྜᛶ࡟ᙳ㡪ࢆ୚࠼ࡿ 3E ┦ࡢᏑᅾࡣㄆࡵࡽࢀ࡞࠿
ࡗࡓࠋࡇࢀࡢ⤖ᯝࡣࠊ୺࡟ %L ┦ࡢ⢏㛫㉸㟁ᑟ≉ᛶࢆ཯ᫎࡍࡿࠊࡢ☢໬⋡ࢆ♧ࡍ ᗘ࡜ ࡢ☢໬⋡ࢆ♧ࡍᗘࡢᕪ࡜ࡋ࡚ᐃ⩏ࡋࡓ'7F ㉸㟁ᑟ㌿⛣ᖜ ࡀ . ࡜ᴟࡵ࡚ඃࢀ࡚࠸ࡿࡇ࡜࡜ᩚྜࡋ࡚࠾ࡾࠊ$ ࡛ࡣ㧗࠸ 7F ࡜࡜ࡶ࡟ඃࢀࡓ⢏㛫≉ᛶࡀᚓࡽࢀ࡚࠸ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿࠋ
ࡇࢀࡽࢆྵࡵ࡚ࠊ-F ࡀᨵၿࡉࢀࡓせᅉ࡟ࡘ࠸࡚ࡣ⌧ᅾࡶゎᯒ୰࡛࠶ࡾࠊ௒ᚋࡢ -F ྥୖࡢぢ㏻ࡋࡶྵࡵ࡚ᙜ᪥ሗ࿌
ࡍࡿࠋ㻲㼕㼓㻚㻌㻞㻌㻼㼞㼛㼓㼞㼑㼟㼟㻌㼕㼚㻌㻵㼏㻌㼛㼒㻌㻮㼕㻞㻞㻞㻟㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼣㼕㼞㼑㻌 㻌ᙜ♫ࡣࠊ',%6&&2pࡢ࢟ࣕࣜ࢔ࢻ࣮ࣉ≧ែ࡜ .ࠊ⮬ᕫ㻌☢ሙୗࡢ ,F ࡞ࡽࡧ࡟ప ☢ሙ୰ࡢ ,F ࡜ࡢ㛵㐃࡟ࡘ࠸࡚ࡶཧ⪃ᩥ⊩㻌ㄪᰝࢆ㐍ࡵ࡚࠸ࡿࠋ$ ࡢ㐣๫㓟⣲㔞ࢆኚ࠼ࡿࡇ࡜࡛࢟ࣕ㻝㻚 㻹㻚㻌㻷㼕㼗㼡㼏㼔㼕㻌 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㼏㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌㼂㼛㼘㻚㻌㻤㻝㻌 㻌ࣜ࢔⃰ᗘࢆ᭱㐺ࢻ࣮ࣉ≧ែ࡟࡞ࡿࡼ࠺࡟ㄪᩚࡋࡓ⤖ᯝࠊ㻔㻞㻜㻝㻜㻕㻌㼜㻚㻝㻌,F ࡣ $ $FPࠊ-F N$FP ࡲ࡛ྥୖࡋ࡚࠾ࡾࠊ⥺㻞㻚 㻹㻚㻌㼃㼍㼠㼍㼚㼍㼎㼑㻌㼑㼠㻌㼍㼘㻚㻦㻌㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌㻯㻿㻶㻌㼏㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌㼂㼛㼘㻚㻌㻤㻝㻌ᮦࢧ࢖ࢬࢆ 7\SH+ ௙ᵝ࡟཰ࡲࡿ⠊ᅖෆ࡛ࡸࡸ኱ࡁࡃࡍࡿ
㻔㻞㻜㻝㻜㻕㻌㼜㻚㻟㻌
ࡇ࡜ࠊ,F!$ ࡢྍ⬟ᛶࡀ࠶ࡿࡇ࡜ࡀ♧၀ࡉࢀࡿࠋ
― 144 ―

第83回

2010年度秋季低温工学・超電導学会

2A-a02

Bi 系線材 (2)'& ࣐ࢢࢿࢺࣟࣥࢫࣃࢵࢱࣜࣥࢢἲ࡛స〇ࡋࡓ %L ⷧ⭷ཬࡧᚋ࢔ࢽ࣮ࣝฎ⌮ࡋࡓ %L3E  ⷧ⭷%LWKLQILOPVSUHSDUHGE\'&PDJQHWURQVSXWWHULQJ 
DQGSRVWDQQHDOHG %L3E WKLQILOPV࿴Ἠ ➉⾨ࠊᅵ஭ ಇဢࠊྜྷᮧ ༟ஓࠊⓑᵹ ၿ๎㸦㮵ඣᓥ኱Ꮫ㸧㸹ᯇᮏ ᫂ၿࠊ໭ཱྀ ோ㸦≀㉁࣭ᮦᩱ◊✲ᶵᵓ㸧IZUMI Takemori, DOI Toshiya , YOSHIMURA Takuya, HAKURAKU Yoshinori (Kagoshima University)
MATUMOTO Akiyoshi, KITAGUCHI hitoshi (Natioonal Insitute for Material Science)⤖ᯝ࡜⪃ᐹ
 Fig.1 ࡟༢⤖ᬗ STO ᇶᯈୖ࡟స〇ࡋࡓ Bi2223 ⷧ⭷࡜⇕ฎ⌮ᚋࡢ(Bi,Pb)2223 ⷧ⭷ࡢ XRD ࣃࢱ࣮ࣥࢆ♧ࡍࠋ
Bi2223 ࡢࣆ࣮ࢡࡣ Bi2223 ࡢ(ε)ࡢࣆ࣮ࢡࡔࡅࡀほ ࡛ࡁࡓࠋࡇࡢࡇ࡜࠿ࡽ Bi2223 ࡣ c ㍈㓄ྥࡋ࡚࠸ࡿࡇ࡜ࡀศ
࠿ࡿࠋࡲࡓࠊ(Bi,Pb)2223 ࡢࣆ࣮ࢡࡣ Bi2223 ࡢࣆ࣮ࢡ࡟
ẚ࡭࡚ࣆ࣮ࢡᙉᗘࡀᙉࡃࠊࣆ࣮ࢡࡀࢩ࣮ࣕࣉ࡟࡞ࡗ࡚࠾ࡾࠊ
Bi+Pb+O2 㞺ᅖẼ୰࡛⇕ฎ⌮ࡍࡿࡇ࡜࡟ࡼࡗ࡚⤖ᬗ໬ᗘࡀྥୖࡋࡓࡇ࡜ࡀ☜ㄆ࡛ࡁࡓࠋFig.2 ࡟ Bi2223 ⷧ⭷࡜
(Bi.Pb)2223 ⷧ⭷ࡢ᢬ᢠ⋡- ᗘ౫Ꮡᛶࢆ♧ࡍࠋBi2223 ⷧ⭷ࡣ Tc-zero=72 K ࡛࠶ࡗࡓࠋ୍᪉ࠊ(Bi,Pb)2223 ⷧ⭷ࡣTc-zero=105 K ࡛࠶ࡾ Tc-zro ࡀ኱ᖜ࡟ᨵၿࡉࢀࡓࠋࡲࡓࠊ77K
࡟࠾࠸࡚ Jc ࢆ ᐃࡋࡓ࡜ࡇࢁࠊ⮬ᕫ☢ሙ࡟࠾࠸࡚ Jc=2
105 A/cm2 ࡛࠶ࡗࡓࠋ௨ୖࡢ⤖ᯝ࠿ࡽ Bi2223 ⷧ⭷ࢆ Bi㸩
Pb㸩O2 㞺ᅖẼ୰࡛⇕ฎ⌮ࡍࡿࡇ࡜࡛(Bi,Pb)2223 ⷧ⭷ࢆస〇ࡍࡿᡭἲࡣ≉ᛶྥୖ࡟㠀ᖖ࡟ຠᯝⓗ࡛࠶ࡿ࡜ゝ࠼ࡿࠋㅰ㎡ ᮏ◊✲ࡢ୍㒊ࡣ⛉Ꮫ◊✲㈝⿵ຓ㔠 22246079 ࡢຓᡂࢆཷࡅ࡚ᐇ᪋ࡉࢀࡓࡶࡢ࡛࠶ࡿࠋ

B i 2223 ( 0026 )B i 2223 ( 0024 )STO ( 200 )B i 2223 ( 0020 )B i 2223 ( 0012 )B i 2223 ( 0014 )B i 2223 ( 0016 )B i 2223 ( 0010 )B i 2223 ( 008 )STO ( 100 )In te n sity (a rb . u n its)ᐇ㦂᪉ἲ
 Bi2223 ⷧ⭷ࡣ༢⤖ᬗ SrTiO3(STO)ᇶᯈୖ࡟ DC ࣐ࢢࢿࢺࣟࣥࢫࣃࢵࢱࣜࣥࢢἲ࡟ࡼࡾస〇ࡋࡓࠋస〇᫬ࡢ㓟⣲ศᅽࡣ 0.33 Torrࠊᇶᯈ ᗘࡣ 706 䉝࡜ࡋࡓࠋస〇ࡋࡓⷧ
⭷ヨᩱ࡟ Bi+Pb+O2 㞺ᅖẼ୰ 845Υ࡟࡚ 30 ᫬㛫ࡢ⇕ฎ⌮ࢆ⾜࠸(Bi,Pb)2223 ⷧ⭷ࢆస〇ࡋࡓࠋ ⷧ⭷ヨᩱࡢ㓄ྥᛶࢆ☜ㄆࡍࡿࡓࡵ࡟ȟ-2ȟἲ࡟ࡼࡿ X⥺ᅇᢡ ᐃ(XRD)ཬࡧᴟⅬᅗ ᐃࢆ⾜ࡗࡓࠋࡲࡓࠊヨᩱ⾲㠃࡟ࡘ࠸࡚ࡣ㉮ᰝ㟁Ꮚ㢧ᚤ㙾(SEM)࡛ほᐹࡋࡓࠋࡉࡽ࡟ࠊ
ヨᩱࡢ⮫⏺㟁ὶᐦᗘ(Jc)ࠊ᢬ᢠࢮࣟࡢ⮫⏺ ᗘ(Tc-zero)ࡣ┤ὶᅄ➃Ꮚἲ࡛ ᐃࡋࡓࠋ(Bi,Pb)2223

Bi2223
0

10

20

30

40

50

60

70

2ȟ(degree)
Fig.1 The X-ray diffraction patterns of the Bi2223 andthe (Bi,Pb)2223 thin films. All diffraction peaksof the patterns can be indexed as (ε).

250

R e s is tiv ity (ȣ Ȑ ࣭ c m )ࡣࡌࡵ࡟
Powder-in-tube ἲ࡟ࡼࡾᐜ᫆࡟స〇ྍ⬟࡛࠶ࡿࡇ࡜
࠿ࡽࠊ㛗ᑻࡢ Bi2223 ⥺ᮦࡢ㛤Ⓨࡣ௚ࡢ㧗 ㉸ఏᑟయ࡟ẚ࡭࡚㐍ࢇ࡛࠸ࡿࠋࡋ࠿ࡋ࡞ࡀࡽࠊBi2223 ⥺ᮦࡢ Jc ࡣᩘ୓
A/cm2 ⛬ᗘ࡜ప࠸್࡟␃ࡲࡗ࡚࠾ࡾࠊ┿࡟ᐇ⏝⥺ᮦ࡜࡞ࡿࡓࡵ࡟ࡣ᭦࡞ࡿ≉ᛶྥୖࡀồࡵࡽࢀ࡚࠸ࡿࠋᡃࠎࡣ
Bi2223 ࡀᣢࡘྍ⬟ᛶࢆㄪ࡭ࡿࡓࡵ࡟Ⰻ㉁࡞ⷧ⭷ࡢస〇࡟ྲྀࡾ⤌ࢇ࡛࠸ࡿࠋ௒ᅇ DC ࣐ࢢࢿࢺࣟࣥࢫࣃࢵࢱࣜࣥࢢἲ࡟ ࡼ ࡾ Bi2223 ⷧ ⭷ ࢆ స 〇 ࡋ ࡓ ࠋ ࡉ ࡽ ࡟ ࡑ ࡢ ⷧ ⭷ ࢆ
Bi+Pb+O2 㞺ᅖẼ୰࡛⇕ฎ⌮ࡍࡿࡇ࡜࡟ࡼࡾ≉ᛶᨵၿࢆヨࡳࡓࠋ

B i 2223 ( 002 )B i 2223 ( 004 )E-mail : k9544875@kadai.jp

As-grown
Bi2223200
150

Post-annealed(Bi,Pb)2223

100
50
0
60

80

100

Temperature (K)

120

140

Fig.2 Temperature dependence of the resistivity forthe as-grown Bi2223 and the post-annealed(Bi,Pb)2223 thin films.

― 145 ―

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2010年度秋季低温工学・超電導学会

2A-a03

Bi 系線材 (2)Bi(Pb)2223 ⥺ᮦ䛾 Tc 䛻ᑐ䛩䜛 2 ẁ㝵䜰䝙䞊䝹ຠᯝ㻌
Effect of two step post-annealing on Tc of Bi(Pb)2223 tapes㻌Ώ㎶㻌 㞞ᙪ䠈ୗᒣ㻌 ῟୍䠈ᑠ⏿㻌 ᆂு䠈ᒣᮏ㻌 ᫂ಖ䠈Ⲷ㔝㻌 ᣅ䠈ᓊᑿ㻌 ග஧䠄ᮾ኱㝔ᕤ䠅䠗ᑠᯘ㻌 ៅ୍䠈ᯘ㻌 ࿴ᙪ䠄ఫ཭㟁ᕤ䠅㻌
WATANABE Masahiko, SHIMOYAMA Jun-ichi, OBATA Keisuke, YAMAMOTO Akiyasu, OGINO Hiraku, KISHIO Kohji(Univ. of Tokyo); KOBAYASHI Shin-ichi, HAYASHI Kazuhiko (Sumitomo Electric Industries, Ltd.)E-mail: tt096686@mail.ecc.u-tokyo.ac.jp
㻝㻚㻌 䛿䛨䜑䛻㻌ᡃ䚻䛿 Bi(Pb)2223 ⥺ᮦ䛾㧗 Tc ໬䜢㏻䛨䛯⮫⏺㟁ὶ≉ᛶ䛾ᨵၿ䜢ᅗ䛳䛶䛝䛯䚹䛣䜜䜎䛷䛻 Bi(Pb)2223 ↝⤖య䝞䝹䜽䜔ᐇ⏝⥺ᮦ䛻䛴䛔䛶㔠ᒓ⤌ᡂ䛾ไᚚ䜔㐺ᗘ䛺㑏ඖ䜰䝙䞊䝹䛻䜘䛳䛶 Tc 䛜 115 K 䜢㉸䛘䚸᭱㧗 117.8 K 䛻㐩䛩䜛䛣䛸䜢ሗ࿌䛧䛶䛝䛯[1, 2]䚹䛧䛛䛧䚸ྠ᫬䛻⏕ᡂ䛩䜛୙⣧≀䛷䛒䜛 Pb3221 ┦䛻䜘䛳䛶㉸ఏᑟ㌿⛣䛜㕌䛟䛺䜚䚸⮫⏺㟁ὶ≉ᛶ䛿䜐䛧䜝ຎ໬䛧䛯䚹䛭䛣䛷ᡃ䚻䛿ᐃẚ䛻㏆䛔㔠ᒓ⤌ᡂ䜢᭷䛩䜛⥺ᮦ䛻ᑐ䛧䛶ᵝ䚻䛺᮲௳䛷㑏ඖ䜰䝙䞊䝹䜢᪋䛩䛣䛸䛷䚸䜰䝙䞊䝹᮲௳䛸 Tc
䜔୙⣧≀䛾ᯒฟ㔞䛾㛵ಀ䜢⣔⤫ⓗ䛻ㄪ䜉䛶䛝䛯[3]䚹䛭䛾⤖ᯝ䚸䜰䝙䞊䝹 ᗘ䝟䝍䞊䞁䛻䜘䜚䚸䛭䛾ຠᯝ䛜኱䛝䛟␗䛺䜛ྍ⬟ᛶ䛜♧၀䛥䜜䛯䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸㑏ඖ㞺ᅖẼ୰䛻䛚䛔䛶␗䛺䜛 ᗘ䛷䛾 2 ẁ㝵䛾䝫䝇䝖䜰䝙䞊䝹䛻䜘䛳䛶䚸Pb3221┦䛾⏕ᡂ䜢క䜟䛪䚸Tc 䜢䜘䜚㧗䜑䜛䛣䛸䜢ヨ䜏䛶䛔䜛䚹䜎䛯䚸㔠ᒓ⤌ᡂ䛜␗䛺䜛⥺ᮦ䛻ᑐ䛧䛶䚸ྠᵝ䛻 2 ẁ㝵䜰䝙䞊䝹䜢⾜䛔䚸䛭䛾ຠᯝ䛾㔠ᒓ⤌ᡂ౫Ꮡᛶ䛻䛴䛔䛶䜒ㄪ䜉䛯䚹㻞㻚㻌 ᐇ㦂᪉ἲ㻌
Bi2O3, PbO, SrCO3, CaCO3, CuO 䜢 ᐃ ẚ ⤌ ᡂ 䛻 ㏆ 䛔
Bi1.7Pb0.35Sr2Ca2Cu3Oy 䛾ẚ䛻䛺䜛䜘䛖䛻ΰྜᚋ䚸✵Ẽ୰ 780 ~
810°C 䛷௬↝䛧䛯䚹ᚓ䜙䜜䛯௬↝⢊ᮎ䜢ෆᚄ3 mm, እᚄ 5mm 䛾 Ag ⟶䛻඘ሸ䛧䚸⣽⥺໬䞉ᅽᘏ䛻䜘䛳䛶ཌ䛥~0.33 mm䚸
ᖜ~3 mm 䛾䝔䞊䝥䛻ຍᕤ䛧䛯䚹䛣䜜䛻ᑐ䛧䛶 5%O2 Ẽὶ୰
830°C 䛷 36 h 䛾୍ḟ↝ᡂ䜢⾜䛳䛯ᚋ䚸ຍᅽ↝ᡂ(300 MPa)䜢
⾜䛔䚸Bi(Pb)2223 䛾༢ⰺ⥺ᮦ䜢ᚓ䛯䚹䜎䛯䚸ከⰺ⥺ᮦ䛻䛴䛔䛶䛿✵Ẽ୰ 847°C 䛷 216 h 䛾ᮏ↝ᡂ䜢⾜䛳䛯䚹䛣䜜䜙䛾ᮏ↝ᡂᚋ䛾ヨᩱ䜢 as-sintered ヨᩱ䛸࿧䜆䚹ᚓ䜙䜜䛯ヨᩱ䛻ᑐ䛧䚸
0.5%O2 Ẽὶ୰䛻䛚䛔䛶➨ 1 䝫䝇䝖䜰䝙䞊䝹䜢 775°C 䛷 100 h⾜䛔䚸䛥䜙䛻 725°C 䛷➨ 2 䝫䝇䝖䜰䝙䞊䝹䜢 100 h 䜎䛯䛿 200 h⾜䛳䛯䚹䛣䜜䜙䛾ヨᩱ䛻䛴䛔䛶᭱ᚋ䛻✵Ẽ୰ 600°䛷䜰䝙䞊䝹ᚋ䚸ᛴ෭䛩䜛䛣䛸䛻䜘䜚㓟⣲㔞䜢ㄪ⠇䛧䛯䚹ᵓᡂ┦䛾ྠᐃཬ䜃᱁Ꮚᐃᩘ䛾ホ౯䛿 X ⥺ᅇᢡ ᐃ䚸ᚤ⣽⤌⧊ほᐹ䛿 SEM
䛻䜘䜚⾜䛔䚸☢໬≉ᛶ䛿 SQUID ☢᮰ィ䜢⏝䛔䛶ㄪ䜉䛯䚹㻟㻚㻌 ⤖ᯝ䞉⪃ᐹ㻌
Fig. 1 䛻ᐃẚ⤌ᡂከⰺ⥺ᮦ䛾 as-sintered ヨᩱ䚸0.5%O2 Ẽὶ୰ 725°C 䛷䝫䝇䝖䜰䝙䞊䝹䜢⾜䛳䛯ヨᩱ䚸䛚䜘䜃 2 ẁ㝵䝫䝇䝖䜰䝙䞊䝹䜢⾜䛳䛯ヨᩱ䛾 XRD 䝟䝍䞊䞁䜢䚸Fig. 2 䛻䛭䜜䜙
䛾ヨᩱ䛾☢໬⋡䛾 ᗘ౫Ꮡᛶ䜢♧䛧䛯䚹Fig. 1 䜘䜚 775°C 䛷䛾➨ 1 䝫䝇䝖䜰䝙䞊䝹䛾ᑟධ䛻䜘䜛 Pb3221 ⏕ᡂ㔞䛻䛿㢧ⴭ䛺ኚ໬䛿䜏䜙䜜䛺䛔䚹୍᪉䛷䚸Fig. 2 䛻♧䛧䛯䜘䛖䛻䚸2 ẁ㝵䝫䝇䝖䜰䝙䞊䝹䜢⾜䛳䛯ヨᩱ䛾᪉䛜㧗䛔 Tc 䜢♧䛧䚸Tconset 䛿 115.2
K 䜎䛷㐩䛧䛯䚹䛣䛾䛸䛝䚸775°C 䛷䛾䜰䝙䞊䝹䜢⾜䜟䛺䛛䛳䛯
ヨᩱ䛷䛿 725°C 䛷䛾䜰䝙䞊䝹᫬㛫䜢㛗䛟䛧䛶䜒 Tconset 䛿ኚ໬䛧䛺䛛䛳䛯䛜䚸775°C 䛷䛾䜰䝙䞊䝹䜢⾜䛳䛯ヨᩱ䛷䛿 725°C䛷䛾䜰䝙䞊䝹᫬㛫䛾ᘏ㛗䛻䜘䜚 Tconset 䛜䛥䜙䛻ୖ᪼䛧䛯䚹䛣䛾ഴྥ䛿௚䛾⤌ᡂ䛷䜒ྠᵝ䛻ㄆ䜑䜙䜜䛯䚹䜎䛯䚸2 ẁ㝵䝫䝇䝖䜰䝙䞊䝹ἲ䛾≉㛗䛸䛧䛶㉸ఏᑟ㌿⛣䛜㠀ᖖ䛻㗦䛟䚸Tcmid 䛜㧗䛔䛣䛸䛜ᣲ䛢䜙䜜䚸725°C 䛾䝫䝇䝖䜰䝙䞊䝹䜢 200 h ⾜䛳䛯ヨᩱ䛻䛚䛔䛶 Tcmid 䛜 112.7 K 䛻㐩䛧䛯䚹䜎䛯䚸775°C 䛷䛾䜰䝙䞊䝹䜢⾜䛳䛯ヨᩱ䛿䛭䜜䜢⾜䜟䛺䛛䛳䛯ヨᩱ䛸ẚ䜉䛶 c ㍈䛜㛗
䛟䚸Bi(Pb)2223 ┦䛾㔠ᒓ⤌ᡂ䛜䛥䜙䛻ᐃẚ䛻㏆䛵䛔䛯䛣䛸䛜♧၀䛥䜜䛯䚹䛣䜜䜙䛾஦ᐇ䛿㉸ఏᑟ≉ᛶ䛜᭱⤊ⓗ䛺㔠ᒓ⤌ᡂ䜢ኚ䛘䜛䜰䝙䞊䝹᮲௳䛰䛡䛷Ỵᐃ䛥䜜䜛䛾䛷䛿䛺䛟䚸䛭䜜䜎䛷䛾㐣⛬䛻䜒౫Ꮡ䛩䜛䛣䛸䜢ព࿡䛧䛶䛔䜛䚹Ⓨ⾲䛷䛿䚸2 ẁ㝵䝫䝇䝖䜰䝙䞊䝹䜢⾜䛳䛯⥺ᮦ䛾 Ic 䛻䛴䛔䛶䜒ሗ࿌䛩䜛䚹

Fig. 1. XRD patterns of Bi(Pb)2223 multi-filamentary tapes,
as-sintered, post-annealed at 725°C in 0.5%O2 for 200 h andpost-annealed at 775°C and 725°C in 0.5%O2 (two step).
Fig. 2. ZFC magnetization curves for Bi(Pb)2223 tapes withnearly stoichiometric cation composition, as-sintered,post-annealed and two step post-annealed.
㼇ཧ⪃ᩥ⊩㼉㻌
[1] A. Tanimoto et al., J. Phys. Conf. Ser. 97 (2008) 012146.
[2] J. Shimoyama et al., Physica C 463-465 (2007) 802-806.
[3] M. Watanabe et al., Abstracts of CSJ Conference, 81(2009) p.3― 146 ―

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2010年度秋季低温工学・超電導学会

2A-a04

Bi 系線材 (2)%6&&2 ࢸ࣮ࣉ࡟࠾ࡅࡿప

᭤ࡆṍࡢ⮫⏺㟁ὶ࡬ࡢᙳ㡪㻵㼚㻙㼟㼕㼠㼡㻌㻮㼑㼚㼐㼕㼚㼓㻌㻰㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻯㼞㼕㼠㼕㼏㼍㼘㻌㻯㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㻮㻿㻯㻯㻻㻌㼀㼍㼜㼑㼟㻌

Ic (A)

㻌㛗ᮧග㐀㸦ᛂ⛉◊㸧ࠊ୰ᮧṊᜏ㸦ி኱㸧ࠊఀ⸨ెᏕࠊྜྷᕝ㞞❶ࠊᑎἑಇஂࠊ⸭㔝Ⰻᖹ㸦࢖࣒ࣛᮦ◊㸧
26$085$.R]R 5,$6 1$.$085$7DNHWVXQH .\RWR8QLY ,72+<RVKLWDND<26+,.$:$0DVDDNL
7(5$6$:$7RVKLKLVD<$%8125\RXKHL ,PXUD5, 㻌㻱㻙㼙㼍㼕㼘㻦㻌㼛㼟㼍㼙㼡㼞㼍㼋㼗㼛㼦㼛㻬㼞㼕㼍㼟㻚㼛㼞㻚㼖㼜㻌㻌㻌㻝䠊䛿䛨䜑䛻㻌
㻌 160%6&&2ࢸ࣮ࣉ⥺ᮦࡢ⮫⏺㟁ὶ࡟ཬࡰࡍᛂຊ࣭ṍࡢ㻌ᙳ㡪࡟ࡘ࠸࡚ࡣࠊ㸦㸯㸧%6&&2 ᒙࡀᙎᛶ㝈࡟࠶ࡿṍ㡿ᇦ࡛
R = 50MPa㻌 140࠸ࢃࡺࡿ 1E6Q ⥺ᮦ࡜ࡣ␗࡞ࡿ┿ᛶṍຠᯝࢆ♧ࡋࠊ㸦㸰㸧
Ic (A) (D=50mm)㻌ᙎᛶ㝈ࢆ㉺࠼ࡿṍ㡿ᇦ࡛ࡣ %6&&2 ᒙࡢከ㔜◚᩿ࡀ㉳ࡇࡿ
Ic (A) (D=40mm)
㻌 120ࡇ࡜ࡀ▱ࡽࢀ࡚࠸ࡿࠋ᭤ࡆṍ࡛ࡣ୍⯡࡟ᘬᙇ࡜ᅽ⦰ࡢṍ
Ic (A) (D=30mm)㻌ࡀྠ᫬࡟ຍࢃࡿࡇ࡜࡟࡞ࡿࠋࡇࡢ࡜ࡁ࡝ࡢࡼ࠺࡞┿ᛶṍ
100㻌ຠᯝࡀ⌧ࢀࡿ࠿ᐃ㔞ⓗ࡞⪃ᐹࡣࡲࡔ⾜ࢃࢀ࡚࠸࡞࠸ࠋࡲ
㻌ࡓ᭤ࡆṍ࡟࠾ࡅࡿከ㔜◚᩿ࡶ」㞧࡞ᵝ┦ࢆ࿊ࡍࡿࠋ୍᪉
80㻌ᐇ⏝ⓗ࡟ࡣ᭤ࡆࡣ㢖⦾࡟㉳ࡇࡿࡢ࡛ࠊࡑࡢᣲືࢆヲ⣽࡟㻌ㄪ࡭ࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋ
60㻌౛࠼ࡤ෭෾ᶵ෭༷⎔ቃୗ࡛㉸㟁ᑟࢸ࣮ࣉࢆࢥ࢖ࣝ࡜ࡋ
㻌࡚౑⏝ࡍࡿ࡜ࡁᐇ ᗘࡣ࠿࡞ࡾࡢ ᗘᖜ࡛ኚືࡍࡿ࡜⪃40㻌࠼ࡽࢀࡿࠋࡑࡇ࡛ᐇ㝿࡟෭෾ჾ࡟ࡼࡾ෭༷ࡋࡓ≧ែ࡛ప
20㻌࡛ࢸ࣮ࣉ࡟᭤ࡆṍࢆ୚࠼ࠊ ᗘኚ໬ࡉࡏࡓ࡜ࡁࡢ⮫⏺
50
60
70
80
90
100
㻌 T (K)㟁ὶࡢᣲືࢆㄪ࡭ࡓࡢ࡛ሗ࿌ࡍࡿࠋ
㻌㻌
Fig. 2 Temperature dependence of critical current under tensilestress of 50 MPa for 3ply BSCCO tapes bent with different
diameter.
㻌䛥䜙䛻⣙ 㻤㻜㻷 䛾୍ᐃ ᗘ䛷ヨᩱ䛻୚䛘䜛ᙇຊ䜢ቑຍ䛥䛫䛯䛸䛣䜝 㻲㼕㼓㻚㻌㻟 䛻♧䛩䜘䛖䛺䛳䛯䚹㻰㻩㻡㻜 䛸 㻠㻜㻌㼙㼙 䛾ヨᩱ䛷䛿⣙ 㻝㻤㻜㻌㻹㻼㼍 ௜㏆䛛䜙⮫⏺㟁ὶ䛿ῶᑡ䛧ጞ䜑䛯䚹୍᪉ 㻰㻩㻟㻜㼙㼙 䛾㻌70㻌㻌
Fig. 1 Low temperature bending apparatus for critical current
measurements㻌㻞䠊ᐇ㦂᪉ἲ㻌⏝䛔䛯ヨᩱ䛿 㻰㻵㻙㻮㻿㻯㻯㻻 䝔䞊䝥䛻㖡ྜ㔠䜢䝷䝭䝛䞊䝖䛧䛯䛔䜟䜖䜛 㻟㼜㼘㼥㻙㻮㻿㻯㻯㻻 䝔䞊䝥⥺ᮦ䛷䛒䜛䚹䝔䞊䝥䜢 㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛻┤ᚄ 㻰 䛾༙෇ᯈ䛻ᕳ䛝䛴䛡䚸䛭䛾୧➃䜢㖡䝤䝻䝑䜽䛷ᅛᐃ䛧䛯䚹䛥䜙䛻෇ᯈ䛾୰ᚰ䜢Ⲵ㔜 㻼 䛷ᘬᙇ䛳䛯䚹䛣䛖䛩䜛䛣䛸䛻䜘䜚䝔䞊䝥⥺ᮦ䜢෇ᯈ䛻䛧䛳䛛䜚䛸ῧ䜟䛫䚸᭦䛻ᘬᙇⲴ㔜䜢ຍ䛘䜛䛣䛸䛜䛷䛝䜛䚹䛣䛾᭤䛢䞉ᘬᙇ἞ල䜢෭෾ᶵ䝦䝑䝗䛻ྲྀ௜䛡䛶෭༷䛧䛯䚹㞺ᅖẼ䛿┿✵䛸䛧䛯䚹ᘬᙇⲴ㔜䜢୚䛘䛯≧ែ䛷㟁ὶ䜢ὶ䛧 㻝P㼂㻛㼏㼙 䛾᮲௳䛷⮫⏺㟁ὶ䜢Ỵᐃ䛧䛯䚹㻌㻌㻟䠊ᐇ㦂⤖ᯝ㻌㻲㼕㼓㻚㻞 䛻⮫⏺㟁ὶ䛾 ᗘ౫Ꮡᛶ䜢♧䛩䚹㻰㻩㻡㻜 䛸 㻠㻜㻌 㼙㼙 䜎䛷᭤䛢䛯䝔䞊䝥ヨᩱ䛻 㻡㻜㻹㻼㼍 䜎䛷䛾ᙇຊ䜢୚䛘䛯≧ែ䛷ᐃ䛧䛯䛸䛣䜝 㻢㻜㻷 ㎶䜚䛛䜙䜋䜌┤⥺ⓗ䛻 㻤㻡㻷 䜎䛷⮫⏺㟁ὶ䛿పୗ䛧䛯䚹䛣䛾ᙇຊ䛿 㻣㻣㻷 䛷䛾ᛂຊ䇷ṍ᭤⥺䛛䜙ᙎᛶ㝈ෆ䛾್䛷䛒䛳䛯䚹䛥䜙䛻 㻰㻩㻟㻜㼙㼙 䜎䛷᭤䛢䛯ヨᩱ䛷䛿⮫⏺㟁ὶ䛾್䛿඲య䛻ୗ䛜䜛䛜䚸 ᗘ౫Ꮡᛶ䛿㢮ఝ䛧䛶䛔䛯䚹㻌㻌

Ic (A)

60

50

40

T = 80 K
30

20
100

Ic (A) (D=50mm)
Ic (A) (D=40mm)
Ic (A) (D=30mm)
150

200

250

R (MPa)㻌
Fig. 3 Tensile stress dependence of critical current at 80 K for
3ply BSCCO tapes bent with different diameter.
㻌ヨᩱ䛷䛿䚸䛿䛨䜑䛛䜙⮫⏺㟁ὶ䛾್䛿ప䛟䚸ᘬᙇᛂຊ䛾ቑຍ䛸䛸䜒䛻㐃⥆ⓗ䛻పୗ䛧䛯䚹㻌㻌䠐䠊䜎䛸䜑㻌㻌 ௨ୖ⤖ᯝ䜢䜎䛸䜑䜛䛸䚸ᮏᐇ㦂䛷⏝䛔䛯䝔䞊䝥ヨᩱ䜢 㻰㻌㻩㻌 㻌㻠㻌㻜㼙㼙 䜎䛷᭤䛢䛶䜒ຎ໬䛧䛺䛔䛣䛸䛜᫂䜙䛛䛸䛺䛳䛯䚹䛯䛰䛧᭤䛢䛯≧ែ䛷 㻝㻤㻜㻹㻼㼍 ௨ୖ䛾ᘬᙇᛂຊ䜢༳ຍ䛩䜛䛸ຎ໬䛜ጞ䜎䜛䛸⤖ㄽ䛵䛡䜙䜜䛯䚹㻌― 147 ―

第83回

2010年度秋季低温工学・超電導学会

2A-a05

Bi 系線材 (2)㻰㻵㻙㻮㻿㻯㻯㻻㻌㼀㼥㼜㼑㻭㻯 ⥺ᮦ䛾⮫⏺㟁ὶ䛾ᛂຊ㻛䜂䛪䜏౫Ꮡᛶホ౯㻌㻱㼢㼍㼘㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㼟㼠㼞㼑㼟㼟㻛㼟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㼕㼚㻌㻰㻵㻙㻮㻿㻯㻯㻻㻌㼀㼥㼜㼑㻭㻯㻌㻌➟ሙ㻌 Ꮥ୍㻔ᐩᒣ኱㻕䠗ᘅෆ㻌 ᝅ䠈ྜྷ㔝㻌 Ὀᘯ㻔ᒾᡭ኱㻕䠗⸨ୖ㻌 ⣧䠈㛗㒊㻌 ࿃㑻㻔ఫ཭㟁ᕤ㻕㻌㻷㻭㻿㻭㻮㻭㻌㻷㼛㼕㼏㼔㼕㻔㼀㻻㼅㻭㻹㻭㻌㼁㼚㼕㼢㻚㻕䠗㻴㻵㻾㻻㼁㻯㻴㻵㻌㻿㼍㼠㼛㼞㼡㻘㻌㼅㻻㻿㻴㻵㻺㻻㻌㼅㼍㼟㼡㼔㼕㼞㼛㻔㻵㼃㻭㼀㻱㻌㼁㼚㼕㼢㻚㻕䠗㻲㼁㻶㻵㻷㻭㻹㻵㻌㻶㼡㼚㻘㻌㻻㻿㻭㻮㻱㻌㻳㼛㼞㼛㻔㻿㻱㻵㻕㻱㻙㼙㼍㼕㼘䠖㻌 㼠㻞㻠㻜㻥㻜㻞㻝㻬㼕㼣㼍㼠㼑㻙㼡㻚㼍㼏㻚㼖㼜㻌⏝䛥䛫䜛䛣䛸䛜ฟ᮶䜛⣙ 㻥㻜㻹㻼㼍 䛻⮳䜛䜎䛷 㻵㼏 䛾ຎ໬䛿䜋䛸䜣䛹⌧䜜䛺䛛䛳䛯䠊㻌
䛺䛚䛣䛾 㻰㻵㻙㻮㻿㻯㻯㻻 ⥺ᮦ䛻㝈䜙䛪䠈䛣䛾䜘䛖䛺䝔䞊䝥≧䛷ᐜ᫆䛻᭤䛢䜛䛣䛸䛾䛷䛝䜛⥺ᮦ䛻㛵䛧䛶䠈≉䛻ᘬᙇ䜚ヨ㦂䛷䠈䜂䛪䜏䛾ᐃ⩏䜔ヨ㦂∦䛾⿦╔ἲ䛺䛹䛻ㄢ㢟䛜䛒䜚䠈௒ᚋ䛭䜜䜙䛾⤫୍ⓗ䛺䝹䞊䝹䛾ᵓ⠏䛜ᚲせ䛷䛒䜛䛸⪃䛘䛶䛔䜛䠊㻌
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㻜

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㼀㼑㼚㼟㼕㼘㼑㻌㼟㼠㼞㼑㼟㼟㻌㻔㻹㻼㼍㻕 㻲㼕㼓㻚㻝㻌㼀㼑㼚㼟㼕㼘㼑㻌㼟㼠㼞㼑㼟㼟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㻚
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㻌㼀㼥㼜㼑㻭㻯㻌㻌㻌㻌㻌㻌㻵㼏㻜㻩㻡㻞㻚㻣㻭㻌㼀㼥㼜㼑㻭㻯㼀㻌㻌㻌㻌㻵㼏㻜㻩㻢㻝㻚㻥㻭㻱㼟㼠㼕㼙㼍㼠㼑㼐

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㻌

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㻣㻣㻷 㻿㼑㼘㼒㻌㻲㼕㼑㼘㼐㻌㼀㼥㼜㼑㻭㻯㻌㻌㻌㻌㻌㻌㻵㼏㻜㻩㻡㻟㻚㻠㻭㻌㼀㼥㼜㼑㻭㻯㼀㻌㻌㻌㻌㻵㼏㻜㻩㻡㻤㻚㻣㻭䩺㻜㻚㻠㻠㻷 㻝㻠㻚㻡㼀
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㻵㼏㻛㻵㼏㼙

㻌㻝㻚㻌 ⥴ゝ㻌㻌 ᮏ◊✲䛷䛿䠈ఫ཭㟁ᕤ〇 㻰㻵㻙㻮㻿㻯㻯㻻 䛻ᑐ䛧䛶䠈ᐇ⏝ୖḞ䛛䛫䛺䛔䠈⮫⏺㟁ὶ 㻵㼏 䛾ᛂຊ㻛䜂䛪䜏౫Ꮡᛶ䜢༢㍈ᘬᙇ䜚ヨ㦂䠈᭤䛢ヨ㦂䠈ᶓᅽ⦰ヨ㦂䛷 ᐃ䛧䛯䠊ᘬᙇ䜚ヨ㦂䛸ᶓᅽ⦰ヨ㦂䛻㛵䛧䛶䛿䠈㻣㻣㻷䞉⮬ᕫ☢⏺ୗ䛷䛾 ᐃ䛻ຍ䛘䠈㻠㻷䞉㻝㻠㻚㻡㼀 ⎔ቃ୰䛷䛾 ᐃ䜢⾜䛳䛯䠊㻌㻌㻞㻚㻌 ᐇ㦂᪉ἲ㻌㻌 ヨᩱ䛿䠈㻰㻵㻙㻮㻿㻯㻯㻻㻌 㼀㼥㼜㼑㻭㻯 䛷䠈஺ὶ⏝㏵䛾䝔䞊䝥⥺ᮦ䛷䛒䜛䠊䜎䛯䠈㼀㼥㼜㼑㻭㻯 䛾ᶵᲔⓗ≉ᛶ䜢ྥୖ䛥䛫䜛≺䛔䛷 㻯㼡 ྜ㔠䜢䝷䝭䝛䞊䝖䛧䛯䜒䛾䛜 㼀㼥㼜㼑㻭㻯㼀 䛷䛒䜛䠊ᮾ໭኱㔠◊ᙉ☢
ሙ㉸ఏᑟᮦᩱ◊✲䝉䞁䝍䞊䛾 㻝㻡㼀 䝋䝺䝜䜲䝗ᆺ㉸ఏᑟ䝬䜾䝛䝑䝖䛾䝪䜰ෆ䛻ᘬᙇ䜚ヨ㦂⿦⨨䠈ᶓᅽ⦰ヨ㦂⿦⨨䜢ᤄධ䛧䠈㻠㻷䞉㻝㻠㻚㻡㼀 ⎔ቃ୰䛷䛭䜜䛮䜜ヨ㦂䜢⾜䛳䛯䠊䜎䛯ྠᆺ䛚䜘䜃௚䛾ヨ㦂⿦⨨䜢⏝䛔䛶 㻣㻣㻷䞉⮬ᕫ☢⏺ୗ䛷䛾ヨ㦂䜢⾜䛳䛯䠊୍᪉䠈᭤䛢ヨ㦂䛿 㻳㼛㼘㼐㼍㼏㼗㼑㼞 ᆺ᭤䛢ヨ㦂ᶵ䜢⏝䛔䛶⾜䛳䛯䠊䛣䜜䛿䠈䝇䝔䝑䝢䞁䜾䝰䞊䝍䛻䜘䛳䛶䠈ヨᩱ䛻㐃⥆ⓗ䛺⣧᭤䛢䜢୚䛘䜛䛣䛸䛜ྍ⬟䛺⿦⨨䛷䛒䜛䠊䛩䜉䛶䛾ヨ㦂䛻䛚䛔䛶䠈㻵㼏䛿 㻠 ➃Ꮚἲ䛷䠈㻝P㼂㻛㼏㼙 䜢ᇶ‽䛸䛧䛶 ᐃ䛧䛯䠊㻌㻌㻟㻚㻌 ⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻌 㻲㼕㼓㻚㻝 䛻ྛヨ㦂⎔ቃୗ䛷䛾ᘬᙇ䜚ヨ㦂䛷ᚓ䛯 㻵㼏 䛾ᛂຊ౫Ꮡᛶ䜢♧䛩䠊 ᐃ㏵୰䜒䛧䛟䛿᭱ᚋ䛻㝖Ⲵ䜢䛧䠈䛭䛾㝖Ⲵᚋ䛻䜒ᐃ䜢⾜䛳䛯䛜䠈䛭䜜䜢ⓑᢤ䛝グྕ䛷⾲䛩䠊㻵㼏 䛾ຎ໬ᣲື䛿㼀㼥㼜㼑㻭㻯䠈㼀㼥㼜㼑㻭㻯㼀 䛸䜒䛻䠈ᛂຊ䛾ቑຍ䛻క䛳䛶䜟䛪䛛䛻ຎ໬䛧䛶䛔䛝䠈䛥䜙䛻኱䛝䛺ᛂຊ䛜ຍ䜟䜛䛣䛸䛷ᛴ⃭䛻ຎ໬䛧䛯䠊䜎䛯 㻵㼏 䛜኱䛝䛟ຎ໬䛩䜛௨๓䛻㝈䜚䠈㝖Ⲵᚋ䛻 㻵㼏 䛜䜟䛪䛛䛻ᅇ᚟䛩䜛ྍ㏫ᛶ䜢♧䛧䛯䠊౛䛘䜀㻌 㻵㼏㻜㻥㻣㻑⥔ᣢᛂຊ䜢ồ䜑䜛䛸䠈㻣㻣㻷 䞉 ⮬ ᕫ ☢ ⏺ ୗ 䛷 䛿 㼀㼥㼜㼑㻭㻯 䠈 㼀㼥㼜㼑㻭㻯㼀 䛷 䛭 䜜 䛮 䜜㻝㻜㻥㻹㻼㼍 䠈 㻞㻜㻞㻹㻼㼍 䠈 㻠㻷 䞉 㻝㻠㻚㻡㼀 ୗ 䛷 䛿 䛭 䜜 䛮 䜜 㻥㻞㻹㻼㼍 䠈㻝㻠㻝㻹㻼㼍 䛷䛒䛳䛯䠊䛹䛱䜙䛾ヨ㦂⎔ቃୗ䛻䛚䛔䛶䜒䠈㻯㼡 ྜ㔠䛾䝷䝭䝛䞊䝖䛻䜘䜛䠈ᛂຊ≉ᛶ䛾ⴭ䛧䛔ྥୖ䛜☜ㄆ䛷䛝䜛䠊㻌㻲㼕㼓㻚㻞 䛻 㻣㻣㻷䞉⮬ᕫ☢⏺ୗ䛷䛾᭤䛢ヨ㦂䛷ᚓ䛯 㻵㼏 䛾᭤䛢䜂䛪䜏౫Ꮡᛶ䜢♧䛩䠊䛣䛣䛷᭤䛢䜂䛪䜏䛾ᐃ⩏䛿䠈⥺ᮦ䛾⾲㠃䛷䛿䛺䛟䠈㻭㻯 䛻䛴䛔䛶䛿⾲⿬䛾 㻭㼓 ᒙ䜢㝖䛔䛯䠈䜎䛯 㻭㻯㼀 䛻䛴䛔䛶䛿䛭䜜䛻䛥䜙䛻⿵ᙉᒙ䜢㝖䛔䛯䠈㻮㼕 䝣䜱䝷䝯䞁䝖䛸 㻭㼓 䝅䞊䝇ᮦ䛜Ꮡᅾ䛩䜛䝁䜰㡿ᇦෆ䛾᭱኱䜂䛪䜏䛸䛩䜛䠊䜎䛯䠈ཧ⪃䜎䛷䛻 㼀㼥㼜㼑㻭㻯 䛻㛵䛧䛶䠈㻵㼏 䛾ຎ໬䛿ᘬᙇ䜚䛾㡿ᇦ䛾䜏䛷⏕䛨䛶䛔䜛䛸䛔䛖௬ᐃ䛾ୗ䛷䠈㻣㻣㻷 䛷䛾ᘬᙇ䜚ヨ㦂䛾⤖ᯝ䛷䛒䜛 㻵㼏 ຎ໬᭤⥺䜢⏝䛔䠈᭤䛢䜂䛪䜏䛾⏕䛨䛶䛔䜛㉸ఏᑟయ䛾㍺㏦ྍ⬟㟁ὶ䜢✚⟬䛧䛯 㻵㼏 䛾ண ィ⟬䛾⤖ᯝ䜢ేグ䛩䜛䠊᭤䛢
ヨ㦂䛻䜘䜛㻌 㻵㼏 䛾኱䛝䛺ຎ໬䛜㛤ጞ䛩䜛䜂䛪䜏䛜䠈䛣䛾ィ⟬䛻䜘䛳䛶䜋䜌ᶍᨃ䛷䛝䛶䛔䜛䛣䛸䛛䜙䠈㻵㼏 ຎ໬䛾ዎᶵ䛿䠈䝁䜰㡿ᇦෆ䛾᭱䜒኱䛝䛺ᘬᙇ䜚䛜స⏝䛩䜛⟠ᡤ䛜ᨭ㓄䛧䛶䛔䜛䛸⪃䛘䜙䜜䜛䠊䛣䛾䛣䛸䛿䠈᭤䛢䛻䜘䜚 㻵㼏 䛜ᚤᑠຎ໬䛧䛯 㼀㼥㼜㼑㻭㻯 䛾⦪᩿㠃䛾 㻿㻱㻹 ീ䛷䠈ᘬᙇ䜚㡿ᇦ䛻㝈ᐃ䛧䛯䛝⿣䛜Ꮡᅾ䛧䛶䛔䛯䛣䛸䛻䜘䛳䛶䜒⿬௜䛡䜙䜜䜛䠊᭤䛢䛻ᑐ䛧䛶䜒ᘬᙇ䜚䛸ྠᵝ䠈㻯㼡 ྜ㔠䛾䝷䝭䝛䞊䝖䛻䜘䛳䛶኱䛝䛺᭤䛢䜂䛪䜏䜎䛷㧗䛔 㻵㼏 䜢⥔ᣢ䛩䜛䛣䛸䛜ྍ⬟䛸䛺䜚䠈㼀㼥㼜㼑㻭㻯㼀 䛷䛿᭤䛢䜂䛪䜏䛜 㻜㻚㻞㻡㻑䛻㐩䛩䜛䜎䛷 㻵㼏㻜 䛾 㻥㻡㻑䜢ಖ䛳䛶䛔䛯䠊㻌㻲㼕㼓㻚㻟 䛻ྛヨ㦂⎔ቃୗ䛷䛾ᶓᅽ⦰ヨ㦂䛷ᚓ䛯 㻵㼏 䛾ᛂຊ౫Ꮡᛶ䜢♧䛩䠊㼀㼥㼜㼑㻭㻯 䛷䛿 㻣㻣㻷䞉⮬ᕫ☢⏺ୗ䠈㻠㻷䞉㻝㻠㻚㻡㼀 ୗ䛸䜒䛻 㻵㼏㻜 䛾 㻥㻣㻑䛸䛺䜛䛾䛿䠈ᶓᅽ⦰ᛂຊ䛜 㻣㻡㻹㻼㼍 ๓ᚋ䛷䛒䜚䠈୍᪉䠈㼀㼥㼜㼑㻭㻯㼀 䛿䛔䛪䜜䛾ヨ㦂⎔ቃ䛷䜒䠈䛣䛾ヨ㦂ᶵ䛜స

㻜

㻞㻜

㻠㻜

㻢㻜

㻤㻜

㼀㼞㼍㼚㼟㼢㼑㼞㼟㼑㻌㼏㼛㼙㼜㼞㼑㼟㼟㼕㼢㼑㻌㼟㼠㼞㼑㼟㼟㻌㻔㻹㻼㼍㻕㻝㻜㻜㻲㼕㼓㻚㻟㻌 㼀㼞㼍㼚㼟㼢㼑㼞㼟㼑㻌 㼏㼛㼙㼜㼞㼑㼟㼟㼕㼢㼑㻌 㼟㼠㼞㼑㼟㼟㻌 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㻚㻌― 148 ―

第83回

2010年度秋季低温工学・超電導学会

2A-a06

Bi 系線材 (2)ᐃ㻌䝟䝹䝇䛚䜘䜃ᐃᖖ୰ᛶᏊ※䜢⏝䛔䛯 㻮㻿㻯㻯㻻 䝔䞊䝥⥺ᮦ䛾㞟ྜ⤌⧊

Texture measurement of BSCCO tapes using Pulsed and Stedy Neutron Source⏫ᒇ ಟኴ㑻䠄኱ྠ኱䠅䠗 㛗ᮧ ග㐀䠄ᛂ⏝⛉Ꮫ◊✲ᡤ䠅䠗䝝䝹䝶㻌 䝇䝔䝣䜯䝚䝇䠄ཎᏊຊᶵᵓ䠅ఀ⸨ ᓫⰾ䠄ཎᏊຊᶵᵓ䠅䠗㕥ᮌ ⿱ኈ䠄ཎᏊຊᶵᵓ䠅
Shutaro MACHIYA (Daido Univ. ) ; Kozo OSAMURA (RIAS) ; HARJO Stefanus䠄JAEA䠅;ITO Takayoshi(JAEA) ; Hiroshi SUZUKI(JAEA)
E-mail: machiya@daido-it.ac.jp

Phi, deg

FWHM, deg

HWHM, deg

13

10

0 0 14 @RESA

12
MM7

11

0 0 24 @Takumi
MM12

9

MM12

TM386

FWHM, deg

㻞㻚㻌 ヨᩱ䛚䜘䜃ᐇ㦂᪉ἲ㻌⏝䛔䛯 Bi-2223 䛾ヨᩱ䛿䠈䝷䝭䝛䞊䝖ᙉ໬䜢䛧䛶䛔䛺䛔⣲⥺䜢⏝䛔䛯䠊ᖜ 4.2 mm䠈ཌ䛥䛿⣙ 0.22 mm 䛷䛒䜚䠈⫼཯䛩䜛 2 ᯛ䜢ᙇ䜚ྜ䜟䛫䛯䜒䛾䜢 1 䝉䝑䝖䛸䛧 5 ⤌ 10 ᯛ䛸䛧䛶䠈୰ᛶᏊᩓ஘
ᐇ㦂䜢⾜䛳䛯䠊⏝䛔䛯ヨ㦂∦䜢䚸⾲䠍䛻♧䛩䠊Ic 䛿 184 A 䛛䜙
150 A 䛾㛫䛾≉ᛶ䛜␗䛺䜛䠒✀䛾ヨ㦂∦䛾 ᐃ䜢⾜䛳䛯䠊䜸䜲䝷䞊䜽䝺䞊䝗䝹䜢⿦ഛ䛧䛯 RESA-II 䛷䛾 ᐃ䛿䠈Axial᪉ྥ䝉䝑䝖䜰䝑䝥䛸䚸Lateral ᪉ྥ䝉䝑䝖䜰䝑䝥䛾䠎✀㢮䛾ヨᩱ䝉䝑䝖䜰䝑䝥䜢⏝䛔䛯䠊⏝䛔䛯ᅇᢡ䛿 220 䛸 0 0 14 䛷䛒䜛䠊⏝䛔䛯Ἴ㛗䛿⣙ 0.2 nm 䛷䛒䜛䠊J-PARC 䛷䛿䠈BL-19 䛾䛂໶䛃䜢⏝䛔䛶 ᐃ䜢⾜䛳䛯䠊໶䛿䜶䝛䝹䜼䞊ศᩓᆺ䛾୰ᛶᏊศග⿦⨨䛷䛒䜚䠈 180 ᗘ䛻ᑐྥ䛩䜛᳨ฟჾ⩌䜢⏝䛔䜛䛣䛸䛷䠈BSCCO 䛾䜘䛖䛺 c ㍈㓄ྥ䛾ሙྜ䠈
RESA-II 䛷䛾 Axial 䛸ྠᵝ䛾䝉䝑䝖䜰䝑䝥䜢⏝䛔䜛䛣䛸䛷䠈ヨᩱ䜢䜎䜟䛩䛣䛸䛺䛟୍ᅇ䛾 ᐃ䛷䠈㞟ྜ⤌⧊䛾ホ౯䛜ྍ⬟䛷䛒䜛䠊⏝䛔䛯ᅇᢡ䛿 220 䛸ᙉᗘ䛜ᚓ䜙䜜䛯 0 0 24 䛷䛒䜛䠊㻌㻌㻟㻚㻌 ⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻌 䜎䛪䠈c ㍈䜎䜟䜚䛾㓄ྥ䜢ホ౯䛩䜛䛯䜑䛻䚸RESA-II 䛻䛶 0 0
14 䜢⏝䛔䛶➨୍㇟㝈䛾䜏 c ㍈䜎䜟䜚䛾 2 ㍈䝇䜻䝱䞁䜢⾜䛳䛯䛸䛣䜝䠈c ㍈䛾ᅇ㌿䛻䜘䜛౫Ꮡᛶ䛿䛺䛟䠈䜎䛯㞟ྜ⤌⧊䛾ゅᗘ౫Ꮡᛶ䜒䛺䛛䛳䛯䠊䛴䜎䜚䠈ᅗ 1 䜘䛖䛺඾ᆺⓗ䛺 c ㍈㓄ྥ䛷䛒䜛䠊ḟ䛻䠈6 ✀䛾ヨ㦂∦䛻䛶䝻䝑䜻䞁䜾䜹䞊䝤 ᐃ䜢⾜䛔䠈䛭䛾༙౯ᖜ䛾 ᐃ䜢⾜䛳䛯䠊ᚓ䜙䜜䛯༙౯ᖜ䛸 Ic 䛸 n ್䛸䛾┦㛵䜢䠈ᅗ 2䠈ᅗ 3 䛻䛭䜜䛮䜜䜎䛸䜑䛯䠊䜀䜙䛴䛝䛿䛒䜛䜒䛾䛾䠈Ic 䛸 n್䛹䛱䜙䛻䜒䠈ྑୗ䛜䜚䛾┦㛵䛜䛒䜛䜘䛖䛻ぢ䛘䜛䠊⤖ᬗ䛾᪉఩ศᕸ䛾䜏䛜㉸ఏᑟ≉ᛶ䜢Ỵᐃ䛩䜛䜒䛾䛷䛿䛺䛔䛜䠈⤖ᬗ䛾᪉఩䛾㞟ྜᗘ䛾ᣦᶆ䛷䛒䜛 FWHM 䛸 n ್䛜┦㛵䜢ᣢ䛴䛣䛸䛿䠈⯆࿡῝䛔Ⅼ䛷䛒䜛䠊㻌

Table 1 Ic characteristic of specimen.
㻌Specimen
Ic (A)
n
㻌
MM12
174
17.0
㻌
MM7
162
18.3
㻌
TM386
156
19.3
㻌
TM377
150
19.7
HS
108
㻌
Brass
insert184㻠㻚㻌 䜎䛸䜑㻌
ᮏᐇ㦂䛷䛿䠈ᐇ⏝㧗 ㉸ఏᑟ⥺ᮦ䛷䛒䜛 BSCCO-Bi-2223
䝔䞊䝥⥺ᮦ䛻䛻䛚䛔䛶䠈ゅᗘศᩓἲ䛸 TOF ἲ䛸ᅇᢡᐇ㦂䜢⾜䛔䠈㞟ྜ⤌⧊ ᐃ䜢⾜䛳䛯䠊䛭䛾⤖ᯝ,BSCCO 䛿඾ᆺⓗ䛺 c㍈㓄ྥ䛷䛒䜛䛣䛸䜢☜ㄆ䛧䛯䠊䜎䛯䠈㓄ྥᗘྜ䛔䜢♧䛩್༙ᖜ䛿䠈n ್䛸┦㛵䛜ぢ䜙䜜䛯䠊20䢢䢳䢲䢢 䢢

䢴䢲
䢢

10
䢲䢢

䢢䢵
䢢䢸
䢲䢢
䢢
䢢䢹䢲
䢢䢳䢲䢲䢢

0
䢢
䢢䢷
䢢䢻䢲䢢 䢢䢺䢲
䢲䢢
䢲䢢

䢢䢶
-10


-20


-20
-10
0
10
20

Chi, deg
Fig. 1 㻌 0 0 14 pole figure of TM377 (only first quadrant)
 149

220 @Takumi
220 @RESA
HS
MM7
13

8
 12

7
HS
11

TM386
Brass ins.
6
 10
TM386 MM12
TM377
 9
TM377 MM7
Brass ins.
5

MM12
8

100
120
140
160
180
100
120
140
160
180

Critical current, A
Critical current, AFig. 2 㻌 Relation between Ic and orientation of FWHM.

FWHM, deg㻝㻚㻌 ⥴ゝ㻌୍⯡ⓗ䛻䠈BSCCO 䛿ᅽᘏ᫬䛾䜈䛝㛤䛸◚○䛻䜘䜛㞟ྜ⤌⧊䜢ᣢ䛴䛜䠈ᐇ⏝⥺ᮦ䛻䛴䛔䛶䠈ホ౯䛥䜜䛯౛䛿䛒䜎䜚䛺䛔䠊㻌
BSCCO 䛾 ㉸ ఏ ᑟ ≉ ᛶ 䛻 䛿 䚸 ୍ ⯡ ⓗ 䛻 䛿 ⤖ ᬗ 䛾 㓄 ྥ(Orientation)䛾≧ែ䛜ᙳ㡪䛩䜛䛸⪃䛘䜙䜜䛶䛔䜛䠊䛧䛛䛧䛺䛜䜙Labo-X ⥺䛷䛿䚸౵ධ῝䛥䛾ၥ㢟䛛䜙⾲㠃䛛䜙ᩘ䝭䜽䝻䞁䛧䛛ホ౯䛷䛝䛪䚸䜎䛯䚸䝣䜱䝷䝯䞁䝖ホ౯䛩䜛䛯䜑䛻䛿ศゎ䛫䛽䜀䛺䜙䛪䚸⭷ཌ᪉ྥ඲య䛷ホ౯䛩䜛䛣䛸䛿䛷䛝䛺䛔䠊㧗䜶䝛䝹䜼䞊X⥺䜢⏝䛔䜜䜀䚸⭷ཌ᪉ྥ඲య䛾ᖹᆒ䜢ホ౯䛷䛝䜛䛜䚸ホ౯㡿ᇦ䛾኱䛝䛥䛸ヨᩱ䝉䝑䝔䜱䞁䜾䛾⮬⏤ᗘ䛾㧗䛥䛾Ⅼ䛛䜙䚸୰ᛶᏊᅇᢡ䜢⏝䛔䛯ホ౯䛜䜒䛳䛸䜒ඃ䜜䛶䛔䜛䠊䛭䛣䛷䚸ᮏᐇ㦂䛷䛿䚸୰ᛶᏊ⥺䜢⏝䛔䛯㓄ྥ䛾ホ౯䜢ヨ䜏䛯䠊୰ᛶᏊ※䛸䛧䛶䠈
JRR-3 䛾ᐃᖖ୰ᛶᏊ※䛸 J-PARC 䛾䝟䝹䝇୰ᛶᏊ䛾䠎䛴䛾䝋䞊䝇䜢⏝䛔䛯䠊Ic ≉ᛶ䛜␗䛺䜛」ᩘ䛾䝔䞊䝥⥺ᮦ䛻䛚䛔䛶䠈ᐃ䜢⾜䛔䠈ẚ㍑᳨ウ䜢⾜䛳䛯䛾䛷䠈⤖ᯝ䜢ሗ࿌䛩䜛䠊

10
TM377

8
TM377

7

9
8

MM7

TM386

6

16

17

18

19

20

21

16

17

18

19

20

21

n valuen value

Fig. 3 㻌 Relation between n value and orientation of FWHM.

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Bi 系線材 (2)c ㍈㓄ྥ Bi(Pb)2223 䝞䝹䜽䛾ᚤ⣽⤌⧊䛸⮫⏺㟁ὶ≉ᛶ
Microstructure and critical current properties of c-axis oriented Bi(Pb)2223 bulksᑠ⏿㻌 ᆂு㻘㻌 Ώ㎶㻌 㞞ᙪ㻘㻌 ୗᒣ㻌 ῟୍㻘㻌 Ⲷ㔝㻌 ᣅ㻘㻌 ᒣᮏ㻌 ᫂ಖ㻘㻌 ᓊᑿ㻌 ග஧㻌 㻔ᮾ኱㝔ᕤ㻕㻧㻌 ᑠᯘ㻌 ៅ୍㻘㻌 ᯘ㻌 ࿴ᙪ㻌 㻔ఫ཭㟁ᕤ㻕㻌
OBATA Keisuke, WATANABE Masahiko, SHIMOYAMA Jun-ichi, OGINO Hiraku,
YAMAMOTO Akiyasu, KISHIO Kohji (Univ. of Tokyo)
KOBAYASHI Shin-ichi, HAYASHI Kazuhiko (Sumitomo Electric Industries, Ltd.)E-mail: tt106654@mail.ecc.u-tokyo.ac.jp1.

䛶䛚䜚䚸㧗☢ሙ䛷᭷ຠ䛺䝢䞁䝙䞁䜾䝉䞁䝍䞊䛜ᑟධ䛥䜜䛯䛣䛸䛿䛨䜑䛻Bi ⣔㉸ఏᑟᮦᩱ䛷䛿 c ㍈㓄ྥ⤌⧊䛾ᙧᡂ䛻䝥䝺䝇䜔ᅽᘏ䛜♧၀䛥䜜䛯䚹㻌

䛺䛹ᶵᲔⓗ㓄ྥἲ䛜ᗈ䛟⏝䛔䜙䜜䛶䛔䜛䛜䚸ヨᩱෆ㒊䛾㓄ྥ䛜୙༑ศ䛷䛒䜚䚸㓄ྥ䛜஘䜜䛯⟠ᡤ䛷䛿⮫⏺㟁ὶ≉ᛶ䛜኱䛝䛟ຎ໬䛩䜛[1,2]䚹䛭䛣䛷ᡃ䚻䛿 Bi(Pb)2212 䜢୺┦䛸䛩䜛௬↝⢊ᮎ䜢☢ሙ୰䝇䝸䝑䝥䜻䝱䝇䝖ἲ䛻䜘䜚ෆ㒊䜎䛷 c ㍈㓄ྥ䛥䛫䛯ᚋ䚸↝ᡂ䜢⾜䛖䛣䛸䛷㧗ᗘ䛻 c ㍈㓄ྥ䛧䚸ヨᩱ඲య䛻䜟䛯䛳䛶㧗䛔⮫⏺㟁ὶᐦᗘ䜢䜒䛴 Bi(Pb)2223 ↝⤖య䛾స〇䜢ヨ䜏䛶䛝䛯[3]䚹䛧䛛䛧䚸௬↝⢊ᮎ䛿 Bi(Pb)2212 ௨እ䛻୙⣧≀┦䜢ከ䛟ྵ䜏䚸⤖ᬗ䛾㓄ྥ䜢ጉ䛢䛶䛔䛯䚹䛭䛣䛷ᮏ◊✲䛷䛿༢┦໬䛧䛯 Bi(Pb)2223 ⢊ᮎ䜢☢ሙ୰䛷䝇䝸䝑䝥䜻䝱䝇䝖䛩䜛䛣䛸䛻䜘䜚䚸䛥䜙䛻㧗ᗘ䛺 c ㍈㓄ྥ⤌⧊䜢᭷䛩䜛↝⤖య䛾స〇䜢┠ᣦ䛧䛶䛔䜛䚹䜎䛯䚸᭷ຠ䛺䝢䞁䝙䞁䜾䝉䞁䝍䞊䛾ᑟධᡭἲ䛸䛧䛶୙⣧≀ඖ⣲䛾ᚤ㔞⨨᥮䛜᭷ຠ䛷䛒䜚[3,4]䚸ᮏ◊✲䛷䛿 Sr 䝃䜲䝖䛻La 䜢ᚤ㔞⨨᥮䛧䛯ヨᩱ䛻䛴䛔䛶䜒㧗䛔㓄ྥᗘ䜢ᣢ䛴↝⤖య䜢స〇䚸ホ౯䛧䚸ᚤ㔞⨨᥮ἲ䛾᭱㐺໬䜢㐍䜑䛶䛔䜛䚹㻌2.

ᐇ㦂᪉ἲ௙㎸⤌ᡂ䜢 Bi1.7Pb0.35(Sr1-xLax)2Ca2Cu3Oy(x = 0, 0.002)䛸䛧䚸

Fig. 1 Secondary electron images of Bi1.7Pb0.35Sr2Ca2Cu3Oybulks after Controlled Over Pressure sintering: (a) P0Ha = 0 T
and (b) P0Ha = 4 T.

ཎᩱ⢊ᮎ䜢ΰྜᚋ䚸✵Ẽ୰ 780~810°C 䛷௬↝ᡂ䜢⾜䛳䛯䚹䝨䝺䝑䝖ᡂᆺᚋ䚸✵Ẽ୰䚸854°C 䛷 216 ᫬㛫↝ᡂ䛧 Bi(Pb)2223↝⤖య䜢స〇䛧䛯䚹䛣䜜䜢⢊○䛧䚸䜶䝍䝜䞊䝹䚸ศᩓ๣䚸⤖ྜ๣䛸ΰྜ䛧䛶స〇䛧䛯䝇䝷䝸䞊䜘䜚䚸↓☢ሙୗ䜒䛧䛟䛿 4 T 䛾☢
ሙ୰䛷䝇䝸䝑䝥䜻䝱䝇䝖䜢⾜䛔ཌ䛥~1㻌mm 䛾⢊ᮎሁ✚≀䜢ᚓ䛯䚹௨ୗ䚸䝇䝸䝑䝥䜻䝱䝇䝖᫬䛾☢ሙ䜢 Ha 䛸⾲䛩䚹⢊ᮎሁ✚≀䜢⬺↴ᚋ䚸㖟⟶䛻ᑒධ䛧䚸୍㍈䝥䝺䝇䛾ᚋ 300 MPa 䛷ຍᅽ↝ᡂ䜢⾜䛳䛯䚹᭱ᚋ䛻✵Ẽ୰ 500°C 䛷䜰䝙䞊䝹ᚋ䚸ᛴ෭䛩䜛䛣䛸䛻䜘䜚㓟⣲㔞䜢ไᚚ䛧䛯䚹ヨᩱ䛾ᵓᡂ┦䛾ྠᐃཬ䜃᱁Ꮚᐃᩘ䛾ホ౯䛿 X ⥺ᅇᢡᐃ䚸ᚤ⣽⤌⧊ほᐹ䛿 SEM 䛻䜘䜚⾜䛔䚸☢

໬≉ᛶ䛿 SQUID ☢᮰ィ䜢⏝䛔䛶ㄪ䜉䛯䚹㻌
㻌
3.

⤖ᯝ䛸⪃ᐹ
Fig. 1 䛻↓☢ሙୗཬ䜃 Ha㻌㻩㻌4 T 䛷䝇䝸䝑䝥䜻䝱䝇䝖䛧䚸ຍᅽ↝ᡂ䜢⾜䛳䛯䝜䞁䝗䞊䝥ヨᩱ䛾◊☻㠃䛾஧ḟ㟁Ꮚീ䜢♧䛩䚹☢ሙ୰䛷䝇䝸䝑䝥䜻䝱䝇䝖䜢⾜䛳䛯ヨᩱ䛾᪉䛜㓄ྥ䛾஘䜜䛯⢏䛜ᑡ䛺䛔䛣䛸䛜ศ䛛䜛䚹䜎䛯 La 䜢ᚤ㔞⨨᥮䛧䛯ヨᩱ䛻䛴䛔䛶䜒ྠᵝ䛾ഴྥ䛜ぢ䜙䜜䛯䚹䛧䛛䛧䚸La ⨨᥮ヨᩱ䛻䛿ຍᅽ↝ᡂ䛾㝿䛻⏕ᡂ䛧䛯䛸ᛮ䜟䜜䜛 CuO 䜔 SrO 䛺䛹䛾୙⣧≀䛜ከ䛟ぢ䜙䜜䛯䚹Fig. 2 䛻䛣䜜䜙䛾ヨᩱ䛾 20 K 䛻䛚䛡䜛 Jc-H ≉ᛶ䜢♧䛩䚹☢ሙ୰䛷䝇䝸䝑䝥䜻䝱䝇䝖䛧䛯ヨᩱ䛷䛿↓☢ሙୗ䛷䝇䝸䝑䝥䜻䝱䝇䝖䜢⾜䛳䛯ヨᩱ䜘䜚䜒඲☢ሙ㡿ᇦ䛻䛚䛔䛶 Jc 䛜ྥୖ䛧䛶䛚䜚䚸⤖ᬗ䛾㓄ྥ䛜⮫⏺㟁ὶ≉ᛶᨵၿ䛻᭷ຠ䛷䛒䜛䛣䛸䛜ศ䛛䜛䚹䛥䜙䛻 La 䜢 0.2䠂⨨᥮䛩䜛䛣䛸䛷㧗☢ሙ୰䛾 Jc 䛜ᨵၿ䛧

Fig. 2 Jc-H curves of c-axis oriented and randomly-oriented
Bi1.7Pb0.35(Sr1-xLax)2Ca2Cu3Oy bulks at 20 K.
ཧ⪃ᩥ⊩[1] W. Pachla et al., Supercond. Sci. Technol. 41 (2001) 635.
[2] S. Patnaik et al., IEEE. Trans. Appl. Supercond. 13 (2003)
2930-2933.
[3] K. Takimoto et al., IEEE. Trans. Appl. Supercond. 19(2009) 3080-3083.
[4] S. Uchida et al., J. Phys. conf. series 43 (2006) 231-234― 150 ―

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HTS コイル保護等䝢䝑䜽䜰䝑䝥䝁䜲䝹䜢⏝䛔䛯㟁Ẽ䜶䝛䝹䜼䞊䝣䝻䞊䛾 ᐃ䛻䜘䜛㻌㧗 ㉸ఏᑟ䝁䜲䝹䛾㠀᥋ゐᆺᒁᡤ␗ᖖ᳨ฟ㻌Contactless measurement of local abnormal condition in high temperature superconducting coilby measuring energy flow using Pick-up coil⸨ᒸ㻌 ┤ே䚸㻌 ᮌඖ㻌 Ṋᑛ䚸㻌 ᕝ㉺㻌 ᫂ྐ䚸㻌 ఫྜྷ㻌 ᩥኵ㻌 㻔㮵ඣᓥ኱䞉ᕤ㻕㻌
FUJIOKA Naoto, KIMOTO Takeru, KAWAGOE Akifumi, SUMIYOSHI Fumio (Kagoshima University)
E-mail: k5529103@kadai.jp䛧䛯ᒁᡤⓗ䛺␗ᖖ䛾Ⓨ⏕ሙᡤ䜢≉ᐃྍ⬟䛛䛹䛖䛛ᐇ㦂ⓗ䛺᳨ウ䜢⾜䛳䛯䚹❅⣲䜺䝇䜢྿䛝௜䛡䛶␗ᖖ䜢Ⓨ⏕䛥䛫䚸䛭䛾ᵝᏊ䜢ᮏ㐠㌿䝅䝇䝔䝮䛾 ᐃ⣲Ꮚ䛷୕Ⅼྠ᫬䛻 ᐃ䛧䛯䚹⤖ᯝ䚸␗ᖖ䛾Ⓨ⏕ሙᡤ䛜≉ᐃྍ⬟䛷䛒䜛䛣䛸䜢♧䛧䛯䚹㻌㻌

Fig. 1 Measuring system to detect locally abnormal condition
in HTS coil.
Normalized energy flow㻝䠊䛿䛨䜑䛻㻌㧗 ㉸ఏᑟ⥺ᮦ䛿䚸౑⏝ ᗘ㡿ᇦ䛜㧗䛟ẚ⇕䛜኱䛝䛔䛯䜑䛻␗ᖖ䛜ఏ᧛䛧䛻䛟䛔䚹䛣䛾䛯䜑䚸ᒁᡤⓗ䛻 ᗘ䛜ୖ᪼䛧⥺ᮦ䛜ᦆയ䛩䜛༴㝤ᛶ䛜䛒䜛䚹䛭䛾䛯䜑䚸㐠㌿┘ど䝅䝇䝔䝮䛻䛿䚸ᒁᡤⓗ䛺␗ᖖ䛾᳨ฟ䛸䛭䛾Ⓨ⏕ሙᡤ䛾≉ᐃ䛜ྍ⬟䛷䛒䜛䛣䛸䛜ồ䜑䜙䜜䜛䚹䛭䛣䛷ᡃ䚻䛿䚸䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䜢ᛂ⏝䛧䚸 ᐃ⣲Ꮚ䜢㉸ఏᑟ䝁䜲䝹䛾࿘᪉ྥ䛻」ᩘ㓄⨨䛩䜛䛣䛸䛻䜘䜚䚸㧗ឤᗘ໬䛸␗ᖖⓎ⏕ሙᡤ䛾≉ᐃ䜢ྍ⬟䛻䛧䛯䚹㧗ឤᗘ໬䛻䛴䛔䛶䛿䚸䛩䛷䛻ᐇド䛥䜜䛶䛔䜛䚹㼇1㼉䛭䛣䛷௒ᅇ䛿䚸
␗ᖖⓎ⏕ሙᡤ䛾≉ᐃ䛜ྍ⬟䛛䛹䛖䛛䜢᳨ド䛧䛯䚹㻌㻞䠊 ᐃ᪉ἲ䛸 ᐃ⿦⨨㻌ᮏ ᐃἲ䛷䛿䚸㉸ఏᑟ䝁䜲䝹࿘㎶䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜢ᐃ䛧䚸䛭䛾ኚ໬䛛䜙␗ᖖ䜢᳨ฟ䛩䜛䚹䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䛿㉸ఏᑟ䝁䜲䝹࿘㎶䛾ᒁᡤⓗ䛺㟁⏺䛸☢⏺䜢䛭䜜䛮䜜 ᐃ䛧䚸㟁⏺䛸☢⏺䛾እ✚䛛䜙ồ䜑䜙䜜䜛䚹㟁⏺䛸☢⏺䛾 ᐃ䛻䛿䚸㟁⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䛸☢⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䜢䛭䜜䛮䜜⏝䛔䜛䚹㻌௒ᅇ䛾ᐇ㦂䛷䝃䞁䝥䝹䝁䜲䝹䛸䛧䛶⏝䛔䛯㉸ఏᑟ䝁䜲䝹䛿䚸㧗ᙉᗘ㖟䝅䞊䝇 Bi-2223 ከⰺ䝔䞊䝥⥺ᮦ䜢 1 ᒙ㽢15 䝍䞊䞁ᕳ⥺䛧䛯ෆᚄ 70mm䚸㧗䛥 64.3mm 䛾䝋䝺䝜䜲䝗䝁䜲䝹䛷䛒䜛䚹䛺䛚䚸㟁⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹㟁ᅽ䛾䛖䛱ㄏᑟᛶ㟁ᅽ䛿䚸䜻䝱䞁䝉䝹⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹㟁ᅽ䜢౑䛳䛶䜻䝱䞁䝉䝹䛧䚸䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹 ᐃ䛾⢭ᗘ䜢ୖ䛢䛯䚹㻌㻟䠊ᐇ㦂᪉ἲ㻌䝃䞁䝥䝹䝁䜲䝹䛻䚸50Hz䚸10Arms 䛾஺ὶ㟁ὶ䜢ᐃ㟁ὶ䝰䞊
䝗䛷㏻㟁䛧䛺䛜䜙䚸䝁䜲䝹ᕳ⥺㒊䛾୍㒊䛻ᐊ 䛾❅⣲䜺䝇䜢྿䛝௜䛡䚸䛭䛾㒊ศ䜢ᒁᡤⓗ䛻ᖖఏᑟ㌿⛣䛥䛫䛶 ᐃ䜢⾜䛳䛯䚹␗ᖖⓎ⏕ሙᡤ䜔 ᐃ⣲Ꮚ䛾タ⨨ሙᡤ䜢 Fig. 1 䛻♧䛩䚹␗ᖖ䛾Ⓨ⏕䛧䛶䛔䜛᪉䜢␗ᖖⓎ⏕ഃ䛸䛧䚸180 ᗘ཯ᑐഃ䜢ṇᖖഃ䛸䛧䚸䛭䛾୰㛫䜢୰㛫Ⅼ䛸䛧䛶䚸䛭䜜䛮䜜䛻 ᐃ⣲Ꮚ䜢タ⨨䛧䛶䛔䜛䚹ᕳ⥺䛻ᒁᡤⓗ䛺␗ᖖ䜢Ⓨ⏕䛥䛫䜛䛯䜑䛻䚸䝃䞁䝥䝹䝁䜲䝹䛾 7䚸8䚸9 䝍䞊䞁┠䛾⣙ 45mm 䜢᩿⇕ᮦ䛷そ䛔䚸䛭䛾᩿⇕ᮦ䛸ᕳ⥺㒊䛾㛫䛻❅⣲䜺䝇䛜⁀䜎䜛✵㛫䜢タ䛡䛯␗ᖖⓎ⏕⿦⨨䜢ྲྀ䜚௜䛡䛶䛔䜛䚹 ᐃ⣲Ꮚ䛿䝁䜲䝹୰ᚰ䛾㧗䛥䛷䛒䜛
8 䝍䞊䞁┠䛻タ⨨䛧䛯䚹䛺䛚䚸䝁䜲䝹䛾≧ែ䜢䝰䝙䝍䞊䛩䜛䛯䜑䛻䚸䝁䜲䝹䛾➃Ꮚ㛫㟁ᅽᦆኻᡂศ䛸䚸␗ᖖⓎ⏕ഃ䛸ṇᖖഃ䛾ᕳ⥺ ᗘ䜒 ᐃ䛧䛯䚹㻠䠊 ᐃ⤖ᯝ㻌䜺䝇❅⣲䛾ὶ㔞䜢 0.9䉭/sec 䛸䛧䛶␗ᖖ䜢Ⓨ⏕䛥䛫䛯䛸䛝䛾䚸ᗘ䚸➃Ꮚ㛫㟁ᅽᦆኻᡂศ䚸ṇᖖ᫬䛾್䛷つ᱁໬䛧䛯䜶䝛䝹䜼䞊䝣䝻䞊䛾 ᐃ⤖ᯝ䜢 Fig. 2 䛻♧䛩䚹Fig. 2 䛾ᶓ㍈䛿䚸ᐃ㛤ጞ䛛䜙䛾⤒㐣᫬㛫䛷䛒䜛䚹 ᐃ⤖ᯝ䜘䜚䚸❅⣲䜺䝇䜢ὀධ䛩䜛䛸➃Ꮚ㛫㟁ᅽᦆኻᡂศ䚸␗ᖖഃᕳ⥺䛾 ᗘ䛸䜒䛻ୖ᪼䛧䚸 ᗘ䛿⮫⏺ ᗘ䛷䛒䜛 107K 䜢㉸䛘䛶䛔䜛䚹䛭䛾䛸䛝䛾䜶䝛䝹䜼䞊䝣䝻䞊䛿␗ᖖⓎ⏕ഃ䛷䛾䜏ୖ᪼䛧䛶䛚䜚␗ᖖ䛾⠊ᅖ䛜୰㛫Ⅼ䜎䛷ཬ䜣䛷䛔䛺䛔䛣䛸䛜ศ䛛䜛䚹䛣䜜䜙䛾⤖ᯝ䛛䜙䚸ᮏ㐠㌿┘ど䝅䝇䝔䝮䛷㉸ఏᑟ䝁䜲䝹䛻Ⓨ⏕䛩䜛␗ᖖ䛾Ⓨ⏕㡿ᇦ䛜≉ᐃྍ⬟䛷䛒䜛䛣䛸䛜䜟䛛䜛䚹㻡䠊䜎䛸䜑㻌ᮏ㐠㌿┘ど䝅䝇䝔䝮䛻䜘䛳䛶䚸㧗 ㉸ఏᑟ䝁䜲䝹ෆ䛻Ⓨ⏕

Fig. 2 Results of tests on detection of local winding conditionin the sample coil.
Referrence[1] S. Kaminohara, et al.: Abstracts of CSJ Conference, Vol.80(2009) p.210― 151 ―

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2010年度秋季低温工学・超電導学会

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HTS コイル保護等䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䛻䜘䜛㉸ఏᑟኚᅽჾ䛾㐠㌿䝰䝙䝍䝸䞁䜾䝅䝇䝔䝮䛾㛤Ⓨ 㻟䠉㈇Ⲵኚື୰䛾ᕳ⥺␗ᖖ䛾᳨ฟ䠉㻌㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㻭㻌㻹㼛㼚㼕㼠㼛㼞㼕㼚㼓㻌㻿㼥㼟㼠㼑㼙㻌㼛㼒㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼀㼞㼍㼚㼟㼒㼛㼞㼙㼑㼞㻌㼎㼥㻌㼁㼟㼕㼚㼓㻌㼠㼔㼑㻌㻼㼛㼥㼚㼠㼕㼚㼓䇻㼟㻌㼂㼑㼏㼠㼛㼞㻌㻹㼑㼠㼔㼛㼐㻟㻌㻙㻰㼑㼠㼑㼏㼠㼕㼛㼚㻌㼛㼒㻌㼍㼎㼚㼛㼞㼙㼍㼘㻌㼏㼛㼚㼐㼕㼠㼕㼛㼚㼟㻌㼕㼚㻌㼣㼕㼚㼐㼕㼚㼓㻌㼐㼡㼞㼕㼚㼓㻌㼘㼛㼍㼐㻌㼏㼔㼍㼚㼓㼑㻙㻌㻌ᑠᆏ㻌 ு኱䚸㻌 ⩚⏕㻌 ኱ோ䚸㻌 ᕝ㉺㻌 ᫂ྐ䚸㻌 ఫྜྷ㻌 ᩥኵ㻌 㻔㮵ඣᓥ኱䞉ᕤ㻕㻧㻌 ᒸඖ㻌 ὒ㻌 㻔஑ᕞ㟁ຊ㻕㻌
KOSAKA Ryota, HABU Kisato, KAWAGOE Akifumi, SUMIYOSHI Fumio (Kagoshima University);
OKAMOTO Hiroshi (Kyushu Electric Power Co.,Inc.)
E-mail: k8197118@kadai.jp
㻝㻚㻌 䛿䛨䜑䛻㻌㉸ఏᑟኚᅽჾ䛾ᐇ⏝໬䛾䛯䜑䛻䛿䚸ኚᅽჾ䛜ṇᖖ䛻㐠㌿䛧䛶䛔䜛䛣䛸䜢ᖖ䛻┘ど䛩䜛䝅䝇䝔䝮䛜ᚲせ䛷䛒䜛䚹ᡃ䚻䛿䚸䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䜢ᛂ⏝䛧䚸ᨺ㟁஦ᨾ䛾༴㝤ᛶ䛾䛺䛔㠀᥋ゐᆺ䛾᪂䛧䛔㐠㌿┘ど䝅䝇䝔䝮䜢ᥦ᱌䛧䛶䛔䜛䚹㻌䛣䜜䜎䛷䚸㕲ᚰ䜢ᣢ䛴ኚᅽჾ䛻䜒ᮏ┘ど䝅䝇䝔䝮䛜㐺⏝ྍ⬟䛷䛒䜛䛛䛹䛖䛛䜢䚸ᑠᆺ䛾㉸ఏᑟኚᅽჾ䛸ヨస䛧䛯┘ど䝅䝇䝔䝮䜢⏝䛔䛶ᐇド䛧䛶䛔䜛㼇1㼉䚹䜎䛯䚸୍ḟഃᕳ⥺䛸஧ḟഃᕳ⥺䛷Ⓨ⏕䛩䜛␗ᖖ䜢ุูྍ⬟䛷䛒䜛䛣䛸䜒ᐇド䛧䛶䛔䜛㼇2㼉䚹䛧䛛䛧䛺䛜䜙㉸ఏᑟኚᅽჾ䛿䚸୍⯡䛻஧ḟഃ䛻᥋⥆䛥䜜䛯㈇Ⲵ
䛜ኚື䛩䜛䛾䛷䚸䛣䜜䛻క䛳䛶䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜒ኚ໬䛩䜛䚹䛧䛯䛜䛳䛶䚸1 ⟠ᡤ䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䛾ほ ⤖ᯝ䛛䜙䛿䚸ᕳ⥺㒊䛾␗ᖖ䛺䛾䛛㈇Ⲵኚື䛺䛾䛛䜢ุ᩿䛩䜛䛣䛸䛿㞴䛧䛔䚹䛭䛣䛷௒ᅇ䛿䚸ኚᅽჾ䛾஧ḟഃ㈇Ⲵ䛜ኚື䛩䜛ሙྜ䛷䜒ᕳ⥺␗ᖖ䛾᳨ฟ䛜ྍ⬟䛺᪉ἲ䜢⪃᱌䛧䚸䛭䛾᭷ຠᛶ䜢ᐇ㦂ⓗ䛻᳨ウ䛧䛯䛾䛷䚸䛭䛾⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌㻞㻚㻌 ᮏ┘ど䝅䝇䝔䝮䛾ཎ⌮䛸㈇Ⲵኚື᫬䛾㐠㌿┘ど᪉ἲ㻌ᡃ䚻䛾ᥦ᱌䛧䛶䛔䜛䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹ἲ䛷䛿䚸㟁⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䛸☢⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䛷ᒁᡤⓗ䛺㟁⏺䛸☢⏺䜢 ᐃ䛧䚸䛭䜜䜙䛾እ✚䛛䜙䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜢ồ䜑䛶䛔䜛䚹㟁⏺䛿䚸☢⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾㟁ᅽ䜢⏝䛔䛶䚸㟁⏺ ᐃ⏝䝢䝑䜽䜰䝑䝥䝁䜲䝹䛾㟁ᅽ䛛䜙ㄏᑟᛶ䛾ᡂศ䛾䜏䛾 ᐃ䜢⾜䛖䛣䛸䛻䜘䜚䚸␗ᖖ᳨ฟ䛾⢭ᗘ䜢㧗䜑䛶䛔䜛䚹㻌㈇Ⲵኚື䛸ᕳ⥺␗ᖖ䜢༊ู䛧䛶ุ᩿䛩䜛䛯䜑䛻䚸㉸ఏᑟኚᅽჾ䛾ୖ㒊䛸ୗ㒊䛾ᑐ⛠䛺఩⨨䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜢ྠ᫬䛻 ᐃ䛧䚸䛭䛾ᕪ䜢┘ど䛩䜛䛸䛔䛖᪉ἲ䜢⪃᱌䛧䛯䚹ୖୗᑐ⛠䛺఩⨨䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䛿䚸␗ᖖ䛾䛺䛔≧ែ䛷䛒䜜䜀䜋䜌ᑐ⛠䛸⪃䛘䜙䜜䜛䚹ୖ㒊䛸ୗ㒊䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䛾ᕪ䜢ồ䜑䜜䜀䚸㈇Ⲵኚື䛧䛶䜒䜋䜌䝊䝻䛾≧ែ䛷䛒䜛䛸⪃䛘䜙䜜䜛䚹䛧䛯䛜䛳䛶䚸ୖୗ䛾䛹䛱䜙䛛䛾䝉䞁䝃䞊䛾㏆䛟䛷␗ᖖ䛜㉳䛝䛯ሙྜ䚸䛭䛾␗ᖖ䜢᳨ฟ䛷䛝䜛䛸⪃䛘䜙䜜䜛䚹௒ᅇヨస䛧䛯⿦⨨䜢 Fig.1 䛻♧䛩䚹㉸ఏᑟኚᅽჾᕳ⥺䛾෭༷⏝ᐜჾ䛾እഃ䛻䚸ୖ㒊䛸ୗ㒊䛾 2 ⟠ᡤ䛻 ᐃ䝉䞁䝃䞊䜢ྲྀ䜚௜䛡䛶䛔䜛䚹㻌㻟㻚㻌 ᐇ㦂᮲௳䞉⤖ᯝ㻌௒ᅇ䛿䚸௨ୗ䛾ᡭ㡰䛷ᐇ㦂䜢⾜䛳䛯䚹㉸ఏᑟኚᅽჾ䛻
20Arms䚸50Hz 䛾஺ὶ㟁ὶ䜢ᐃ㟁ᅽ䝰䞊䝗䛷㏻㟁䛧䚸஧ḟഃ䛾㈇Ⲵ䜢ኚື䛥䛫䛯᫬䛾ኚᅽჾ࿘㎶䛾䝫䜲䞁䝏䞁䜾䝧䜽䝖䝹䜢ᐃ䛧䛯䚹ኚᅽჾ䛿䚸㧗䛥⣙ 100mm䚸୍ḟഃෆᚄ 80mm䚸஧ḟഃෆᚄ 110mm 䛷䛒䜛䚹ᐃ᱁ᐜ㔞䛿䚸500VA 䛷䛒䜛䚹ᕳ⥺䛻䛿䚸⮫⏺㟁ὶ䛜 88A 䛾㧗ᙉᗘ Bi-2223 ከⰺ䝔䞊䝥⥺ᮦ䜢౑⏝䛧䛯䚹 ᐃ䝉䞁䝃䞊䛾タ⨨ሙᡤ䛿䚸䝁䜲䝹୰ᚰ䛾఩⨨䛛䜙
㍈᪉ྥ䛻+30mm 䛾ሙᡤ䛻䝅䝇䝔䝮 1 䜢䚸-30mm 䛾ሙᡤ䛻䝅䝇䝔䝮 2 䛸䛧䛯䚹㈇Ⲵ䛿䚸᢬ᢠ㈇Ⲵ䛸䛧䚸ᐃ᱁㐠㌿䛛䜙ᐃ᱁䛾
50䠂䜎䛷ኚ໬䛥䛫䛯䚹ᕳ⥺㒊䛻Ⓨ⏕䛥䛫䛯␗ᖖ䛿䚸㟁☢⏺䜢஘䛥䛺䛔䜘䛖䛻ᾮయ❅⣲䛾⮬↛⵨Ⓨ䛻䜘䛳䛶䝁䜲䝹ୖ㒊䛛䜙␗ᖖ䜢Ⓨ⏕䛥䛫䛯䚹㻌ᐇ㦂⤖ᯝ䜢 Fig. 2(a)䚸(b)䛻♧䛩䚹Fig. 2(a)㻌 䛿䚸ኚᅽჾ䛻␗ᖖ䜢Ⓨ⏕䛥䛫䛪䛻㈇Ⲵ䜢ኚື䛥䛫䛯᫬䛻 ᐃ䛧䛯䜶䝛䝹䜼䞊䝣䝻䞊䚸Fig. 2(b)㻌 䛿䚸ᕳ⥺㒊䛻␗ᖖ䜢Ⓨ⏕䛥䛫䚸㈇Ⲵ䜢ኚື䛥䛫䛯᫬䛾䜶䝛䝹䜼䞊䝣䝻䞊䛷䛒䜛䚹䜶䝛䝹䜼䞊䝣䝻䞊䛾ᕪ䛿䚸ṇᖖ᫬䛾ୖୗ䛾䜶䝛䝹䜼䞊䝣䝻䞊䛾ẚ⋡䛷⿵ṇ䛧䛯ᚋ䛻ᕪ䜢ồ䜑䛶䛔䜛䚹Fig. 2(a)㻌 䛷䛿䚸ୖୗ䛾䛭䜜䛮䜜䛾䜶䝛䝹䜼䞊䝣
䝻䞊䛜㈇Ⲵኚື䛻క䛳䛶኱䛝䛟ኚື䛧䛶䛔䜛䛻䜒㛵䜟䜙䛪䚸䜶䝛䝹䜼䞊䝣䝻䞊䛾ᕪ䛿ኚ໬䛧䛶䛔䛺䛔䛣䛸䛛䜙䚸ᕳ⥺≧ែ䛻ኚ໬䛜䛺䛔䛣䛸䛜䜟䛛䜛䚹䜎䛯䚸Fig. 2(b) 䛷䛿䚸䜶䝛䝹䜼䞊䝣䝻䞊䛾ᕪ䛜ቑຍ䛧䛶䛔䜛䛣䛸䛛䜙䚸ᕳ⥺㒊ୖ㒊䛷Ⓨ⏕䛧䛯␗ᖖ䛜᳨ฟ䛷䛝䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹௨ୖ䛾䛣䛸䛛䜙䚸ᮏ䝅䝇䝔䝮䜢⏝䛔䜛䛣䛸䛷஧ḟഃ䛻᥋⥆䛥䜜䛯㈇Ⲵ䛜ኚື䛩䜛᫬䛷䜒䚸㉸ఏᑟኚᅽჾ䛾ᕳ⥺㒊䛾␗ᖖ䜢᳨ฟ䛷䛝䜛䛣䛸䛜䜟䛛䛳䛯䚹㻌㻌㻠㻚㻌 䜎䛸䜑㻌
㉸ఏᑟኚᅽჾ䛻䛚䛡䜛ᕳ⥺␗ᖖ䛸㈇Ⲵኚື䜢༊ู䛧䛶᳨ฟ䛩䜛䛯䜑䛻䚸 ᐃ䝉䞁䝃䞊䜢ኚᅽჾ䛾ୖ㒊䛸ୗ㒊䛾 㻞 ⟠ᡤ䛻タ⨨䛧䚸䛭䛾 ᐃ್䛾ᕪ䜢┘ど䛩䜛᪉ἲ䜢⪃᱌䛧䚸ᐇ㝿䛻ᕳ⥺␗ᖖ䛾᳨ฟヨ㦂䜢⾜䛳䛯䚹䛭䛾⤖ᯝ䚸㈇Ⲵ䛜ኚື୰䛷䛒䛳䛶䜒䚸ᕳ⥺㒊䛾␗ᖖ䜢᳨ฟ䛷䛝䜛䛣䛸䜢ᐇド䛧䛯䚹䛣䛾䛣䛸䛛䜙䚸㉸ఏᑟኚᅽჾ䛾㐠㌿┘ど⿦⨨䛸䛧䛶䚸ᮏ┘ど䝅䝇䝔䝮䛜᭷ຠ䛷䛒䜛䛣䛸䜢♧䛧䛯䚹㻌

Fig. 1 Experimental set up(a) Usual condition(b) Unusual condition
Fig. 2 Experimental result㻾㼑㼒㼑㼞㼑㼚㼏㼑㻌[1] K. Habu, et al.: Abstracts of CSJ Conference, Vol.81 (2009)
p.121[2] K. Habu, et al.: Abstracts of CSJ Conference, Vol.82 (2010)
p.135― 152 ―

第83回

2010年度秋季低温工学・超電導学会

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HTS コイル保護等ఏᑟ෭༷ᆺ 㻠㻌㼀 ⣭ 㼅 ⣔䝁䜲䝹䛾㛤Ⓨ䠄㻝䠅㻌䠉ேᕤ䝢䞁ධ䜚⥺ᮦ䜢⏝䛔䛯䝁䜲䝹䛾㏻㟁≉ᛶ䠉㻌㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㼏㼛㼚㼐㼡㼏㼠㼕㼛㼚㻙㼏㼛㼛㼘㼑㼐㻌㻠㻌㼀㻙㼏㼘㼍㼟㼟㻌㼏㼛㼕㼘㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㼅㻮㻯㻻㻌㼠㼍㼜㼑㼟㻌 䠄㻝䠅㻌 㻌䠉㻱㼒㼒㼑㼏㼠㼟㻌㼛㼒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㼟㻌㼛㼚㻌㼂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䠉㻌― 153 ―

㻯㼑㼚㼠㼞㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㻌㼛㼒㻌㼠㼔㼑㻌㼟㼠㼍㼏㼗㼑㼐㻌㼏㼛㼕㼘㼟㻌㼇㼀㼉㻯㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㼏㼛㼕㼘㻌㻏㻭㻌㼇㻭㼉㻱㼘㼑㼏㼠㼞㼕㼏㻌㼒㼕㼑㼘㼐㻌㼇㼂㻛㼏㼙㼉㻌ᒾ஭㻌 ㈆᠇䠈ᐑ㷂㻌 ᐶྐ䠈ᡞᆏ㻌 Ὀ㐀䠈⏣㷂㻌 ㈼ྖ䠈ⰼ஭㻌 ဴ䠈ᾆ⏣㻌 ᫀ㌟䠈஭ᒸ㻌 ⱱ䠈▼஭㻌 ♸௓䠄ᮾⰪ䠅㻌㻵㼃㻭㻵㻌㻿㼍㼐㼍㼚㼛㼞㼕㻘㻌㻹㻵㼅㻭㼆㻭㻷㻵㻌㻴㼕㼞㼛㼟㼔㼕䠈㻌 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㼟㼍㼐㼍㼚㼛㼞㼕㻚㼕㼣㼍㼕㻬㼠㼛㼟㼔㼕㼎㼍㻚㼏㼛㻚㼖㼜㻌㻌
Ⓨ⏕☢ሙ䛿㻘 ᗘ䛾పୗ䛻క䛔ேᕤ䝢䞁䛾᭷↓䛻䜘䜛㐪䛔䛜㻝䠊䛿䛨䜑䛻㻌
㢧ⴭ䛸䛺䜛䛣䛸䜢᫂䜙䛛䛻䛧䛯䠊㻌䜲䝑䝖䝸䜴䝮⣔䠄㼅 ⣔䠅䝁䜲䝹䛾㧗☢ሙ໬䛻ྥ䛡䛯㛤Ⓨ䜢㐍㻌䜑䛶䛔䜛䠊䝁䜲䝹タィ䛻ᙜ䛯䜚㧗☢ሙ୰䛷䛾⮫⏺㟁ὶ≉ᛶ䛜㼀㼍㼎㼘㼑㻚㻝㻌㻿㼜㼑㼏㼕㼒㼕㼏㼍㼠㼕㼛㼚㼟㻌㼛㼒㻌㼅㻮㻯㻻㻌㼟㼕㼚㼓㼘㼑㻙㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻌ᨵၿ䛥䜜䛯ேᕤ䝢䞁ධ䜚⥺ᮦ䛾㐺⏝䛜᭷ຠ䛷䛒䜛䛜䠈䝁䜲䝹㻯㼛㼕㼘㻌㻺㼛㻚㻌
㻏㻭㻌
㻏㻮㻌
㻏㻯㻌
㻏㻰㻌
໬䛧䛯㝿䛾Ⓨ⏕☢ሙ䛜䛹䛾⛬ᗘྥୖ䛩䜛䛛䛻䛴䛔䛶஦๓䛻㼀㼍㼜㼑㻌㼣㼕㼐㼠㼔㻌
㻠㻌㼙㼙㻌
㻠㻌㼙㼙㻌
㻠㻌㼙㼙㻌
㻠㻌㼙㼙㻌
ᢕᥱ䛧䛶䛚䛟ᚲせ䛜䛒䜛䠊䛭䛣䛷䠈▷ᑻ䛷䛾⮫⏺㟁ὶ≉ᛶ䜢㼀㼍㼜㼑㻌㼠㼔㼕㼏㼗㼚㼑㼟㼟㻜㻚㻝㻌㼙㼙㻌
㻜㻚㻝㻌㼙㼙㻌
㻜㻚㻝㻌㼙㼙㻌
㻜㻚㻝㻌㼙㼙㻌
ྲྀᚓ䛧䛯ேᕤ䝢䞁ධ䜚⥺ᮦ䜢⏝䛔䛶䝁䜲䝹䜢ヨస䛩䜛䛸ඹ䛻䠈㼀㼍㼜㼑㻌㻸㼑㼚㼓㼠㼔㻌
㻞㻠㻌㼙㻌
㻞㻠㻌㼙㻌
㻞㻠㻌㼙㻌
㻞㻠㻌㼙㻌
ఏᑟ෭༷ୗ䛻䛚䛡䜛䝁䜲䝹㏻㟁≉ᛶ䛻䛴䛔䛶䠈௨๓ྠㅖඖ
㻹㼕㼚㻌㻵㼏㻬㻣㻣㻌㻷㻘㻌㻜㼀
㻤㻢㻌㻭㻌
㻤㻢㻌㻭㻌
㻥㻥㻌㻭㻌
㻥㻥㻌㻭㻌
䛷〇స䛧䛯ேᕤ䝢䞁䛜ᑟධ䛥䜜䛶䛔䛺䛔⥺ᮦ䜢⏝䛔䛯䝁䜲䝹㻵㼚㼚㼑㼞㻌㼐㼕㼍㼙㼑㼠㼑㼞㻌㻡㻜㻌㼙㼙㻌
㻡㻜㻌㼙㼙㻌
㻡㻜㻌㼙㼙㻌
㻡㻜㻌㼙㼙㻌
䛸䛾ẚ㍑䛚䜘䜃ホ౯䜢⾜䛳䛯䠊㻌㻻㼡㼠㼑㼞㻌㼐㼕㼍㼙㼑㼠㼑㼞㻤㻥㻌㼙㼙㻌
㻤㻥㻌㼙㼙㻌
㻤㻤㻌㼙㼙㻌
㻤㻤㻌㼙㼙㻌
㻌㻺㼡㼙㼎㼑㼞㻌㼛㼒㻌㼠㼡㼞㼚㼟
㻝㻝㻝㻌
㻝㻝㻝㻌
㻝㻝㻝㻌
㻝㻝㻝㻌
㻞䠊䝟䞁䜿䞊䜻䝁䜲䝹䛾ヨస䛚䜘䜃㏻㟁ホ౯㻌㻝㻚㻱㻙㻜㻢
ヨస䛧䛯ྵᾐ䝟䞁䜿䞊䜻䝁䜲䝹䠐ᯛ䠄㻏㻭䡚㻏㻰䠅䛾⥺ᮦㅖඖ㼏㼛㼕㼘㻏㻭
䛸䝁䜲䝹ㅖඖ䜢 㼀㼍㼎㼘㼑㻚㻝 䛻♧䛩䠊ᕳ⥺䛚䜘䜃ྵᾐ䝥䝻䝉䝇䜢⤒㼏㼛㼕㼘㻏㻮
㼏㼛㼕㼘㻏㻯
䛯ᚋ䛻㻘⥺ᮦ䛾⮫⏺㟁ὶ≉ᛶ䛜ຎ໬䛧䛶䛔䛺䛔䛣䛸䜢☜ㄆ䛩㼏㼛㼕㼘㻏㻰
㻝㻚㻱㻙㻜㻣
㻯㼍㼘㼏㼡㼞㼍㼠㼑㼐㻌㼢㼍㼘㼡㼑䜛䛯䜑㻘ྛ䝟䞁䜿䞊䜻䝁䜲䝹䜢ᾮయ❅⣲୰䛷㏻㟁ホ౯䛧䛯䠊㏻㻙㻤㻌㻙䠓㟁ヨ㦂⤖ᯝ䜢 㻲㼕㼓㻚㻝 䛻♧䛩䠊ྛ䝁䜲䝹䛿㻌 㻝㽢㻝㻜 䡚㻌 㻝㽢㻝㻜 㻌㼂㻛㼏㼙 ᐃ⩏䛻䛚䛔䛶 㼚 ್䛜඲䛶 㻞㻡 䜢㉸䛘䜛Ⰻዲ䛺㉸㟁ᑟ≉㻝㻚㻱㻙㻜㻤
ᛶ䜢᭷䛧䛶䛚䜚㻘ຎ໬䛺䛟ྵᾐ䝟䞁䜿䞊䜻䝁䜲䝹䜢〇స䛩䜛䛣䛸䛜䛷䛝䛯䠊䜎䛯▷ᑻ⥺ᮦ䛾⮫⏺㟁ὶ≉ᛶ䛛䜙ィ⟬䛧䛯㟁ὶ㻙㟁⏺≉ᛶ䛿ᐇ㦂್䛸䜋䜌୍⮴䛧䛶䛔䜛䛣䛸䛛䜙㻘⮫⏺㟁ὶ್㻝㻚㻱㻙㻜㻥
㻝㻜㻝㻜㻜㻝㻜㻜㻜䛜」㞧䛺☢ሙ㻘ゅᗘ౫Ꮡᛶ䜢ᣢ䛴ேᕤ䝢䞁ධ䜚⥺ᮦ䛻ᑐ䛧䛶㻯㼡㼞㼞㼑㼚㼠㻌㼇㻭㼉䜒㻘䝁䜲䝹㏻㟁≉ᛶ䜢ᐃ㔞ⓗ䛻ண 䛜䛷䛝䜛䛣䛸䛜ศ䛛䛳䛯䠊㻌㻌㻲㼕㼓㻚㻝㻌㻱㻙㻵㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼛㼒㻌㼟㼕㼚㼓㼘㼑㻙㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻟䠊ఏᑟ෭༷㏻㟁ヨ㦂㻌㻌䠐ᯛ䛾䝟䞁䜿䞊䜻䝁䜲䝹䜢⏝䛔䛶㻘㻲㼕㼓㻚㻞 䛻♧䛩䠐✚ᒙ䝁䜲䝹䜢ヨస䛧䛯䠊✚ᒙ㡰䛿ୖ䛛䜙㻏㻭㻘㻏㻮㻘㻏㻯㻘㻏㻰 䛸䛧䛯䠊䠎ᯛ䛾䝟䞁䜿䞊䜻䝁䜲䝹ẖ䛻ᤄධ䛧䛯䜰䝹䝭ᯈ䛾ඛ➃䜢㻘㻳㻹 ෭෾ᶵ䛾䠎ẁ䝇䝔䞊䝆䛻⇕ⓗ䛻᥋⥆䛧㻘䝁䜲䝹䜢ఏᑟ෭༷䛧䛯䠊㻞 ẁ䝇䝔䞊䝆䛻ྲྀ䜚௜䛡䛯䝠䞊䝍䛾ไᚚ䛻䜘䜚䝁䜲䝹 ᗘ䜢୍ᐃ䛻⥔ᣢ$䛧㻘㻞㻜㻌㻷 䛛䜙 㻢㻜㻌㻷 䛾⠊ᅖ䛷㏻㟁ヨ㦂䜢ᐇ᪋䛧䛯䠊Ⓨ⏕㟁ᅽ䛿%ྛ䝟䞁䜿䞊䜻䝁䜲䝹䛾୧➃䛷 ᐃ䛧㻘䝁䜲䝹 ᗘ䛿✚ᒙ䝁䜲䝹&䛾ୖୗ㠃䛻ྲྀ䜚௜䛡䛯᢬ᢠ ᗘィ䛻䜘䜚 ᐃ䛧䛯䠊䜎䛯䝩䞊'䝹⣲Ꮚ䛻䜘䜚䝁䜲䝹䛾୰ᚰ☢ሙ䜢ィ 䛧䛯䠊㻌㻌㻲㼕㼓㻚㻞㻌㻿㼠㼍㼏㼗㼑㼐㻌㼟㼕㼚㼓㼘㼑㻙㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻌㟁ᅽ䛜Ⓨ⏕䛧䛯䛾䛿㻘ேᕤ䝢䞁↓䛧䛾ሙྜ䛸ྠ䛨䛟᭱እᒙ㻌䛾䝁䜲䝹㻔㻏㻭㻕䛾䜏䛷䛒䛳䛯䠊ఏᑟ෭༷ୗ䛻䛚䛔䛶䜒䝁䜲䝹㻏㻭䛾 㼚 ್䛿 㻞㻡 䜢㉸䛘䛶䛚䜚㻘Ⰻዲ䛺㉸㟁ᑟ≉ᛶ䛜ᚓ䜙䜜䛯䠊㻟㻡㻜㻡㼣㼕㼠㼔㻌㼍㼞㼠㼕㼒㼕㼏㼕㼍㼘㻲㼕㼓㻚㻟㻌 䛻䝁䜲䝹㻏㻭 䛾⮫⏺㟁ὶ್㻘䛚䜘䜃䝁䜲䝹୰ᚰ☢ሙ䛾㼜㼕㼚㼚㼕㼚㼓㻌㼏㼑㼚㼠㼑㼞㻟㻜㻜㼣㼕㼠㼔㼛㼡㼠㻌㼍㼞㼠㼕㼒㼕㼏㼕㼍㼘㻠ᗘ౫Ꮡ䛻䛴䛔䛶㻘ேᕤ䝢䞁↓䛧䛾ሙྜ䛸ే䛫䛶♧䛩䠊䝁䜲䝹㼜㼕㼚㼚㼕㼚㼓㻌㼏㼑㼚㼠㼑㼞㻞㻡㻜ᗘ䛾పୗ䛻క䛔ேᕤ䝢䞁䛾᭷↓䛻䜘䜛㐪䛔䛿㢧ⴭ䛸䛺䜚㻘䝁䜲㻟㻞㻜㻜䝹 ᗘ 㻞㻜㻌㻷 䛻䛚䛔䛶㻘䝁䜲䝹୰ᚰ☢ሙ䛿ேᕤ䝢䞁↓䛧䛾ሙྜ㻝㻡㻜䛸ẚ㍑䛧䛶⣙ 㻝㻚㻢㻌 ಸ䛾 㻞㻚㻟㻌㼀 䜢㐩ᡂ䛧䛯䠊㻌
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㻡㻜ேᕤ䝢䞁ධ䜚䠵⣔⥺ᮦ䜢⏝䛔䛶ྵᾐ䝟䞁䜿䞊䜻䝁䜲䝹䛚䜘
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䜃䠐✚ᒙ䝁䜲䝹䜢ຎ໬䛺䛟〇స䛩䜛䛣䛸䛜䛷䛝䛯䠊ᾮయ❅⣲㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼇㻷㼉ᗘ䛻䛚䛡䜛䝟䞁䜿䞊䜻䝁䜲䝹䛾㏻㟁≉ᛶ䛻䛴䛔䛶㻘㻌 ⮫⏺㟁ὶ㻲㼕㼓㻚㻟㻌㻯㼞㼕㼠㼕㼏㼍㼘㻌㼏㼡㼞㼞㼑㼚㼠㻌㼛㼒㻌㼠㼔㼑㻌㼡㼜㼜㼑㼞㼙㼛㼟㼠㻌㼏㼛㼕㼘㻌㼍㼚㼐㻌್䛜」㞧䛺☢ሙ㻘ゅᗘ౫Ꮡᛶ䜢ᣢ䛴ேᕤ䝢䞁ධ䜚⥺ᮦ䛻ᑐ䛧㻌 㼏㼑㼚㼠㼞㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼛㼒㻌㼠㼔㼑㻌㼟㼠㼍㼏㼗㼑㼐㻌㼏㼛㼕㼘㼟㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌䛶䜒㻘ゎᯒ䛷ᐃ㔞ⓗ䛻ண ྍ⬟䛷䛒䜛䛣䛸䛜ศ䛛䛳䛯䠊䜎䛯䠐㻌 㼅㻮㻯㻻㻌㼠㼍㼜㼑㼟㻌㼣㼕㼠㼔㻛㼣㼕㼠㼔㼛㼡㼠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㻌✚ᒙ䝁䜲䝹䛾ఏᑟ෭༷ヨ㦂䜢ᐇ᪋䛧㻘䝁䜲䝹㏻㟁≉ᛶ䛚䜘䜃

第83回

2010年度秋季低温工学・超電導学会

2A-a11

HTS コイル保護等ఏᑟ෭༷ᆺ 㻠㼀 ⣭ 㼅 ⣔䝁䜲䝹䛾㛤Ⓨ㻔㻞㻕㻌㻙㻝㻞 ✚ᒙ䝁䜲䝹タィ䞉ヨస㻙㻌㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㻌㼛㼒㻌㼏㼛㼚㼐㼡㼏㼠㼕㼛㼚㻙㼏㼛㼛㼘㼑㼐㻌㻠㼀㻙㼏㼘㼍㼟㼟㻌㼏㼛㼕㼘㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㼅㻮㻯㻻㻌㼠㼍㼜㼑㼟㻌 㻌㻙㼐㼑㼟㼕㼓㼚㻌㼍㼚㼐㻌㼒㼍㼎㼞㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㻝㻞㻌㼟㼠㼍㼏㼗㼑㼐㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻙㻌

㻠㻌
㻜㻚㻝㻌
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㻴㼍㼟㼠㼑㼘㼘㼛㼥䕿㼆㼞㻙㼐㼛㼜㼑㼐㻌㼣㼕㼞㼑㻌㻤㻢䡚㻝㻝㻞㻌

㻯㼚㼠㼞㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㻔㼀㻕㼃㼕㼐㼠㼔㻌㻔㼙㼙㻕㻌㼀㼔㼕㼏㼗㼚㼑㼟㼟㻌㻔㼙㼙㻕㻌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㻿㼡㼎㼟㼠㼞㼍㼠㼑㻌㼀㼥㼜㼑㻌㻵㼏㻬㻣㻣㻌㻷㻘㻌㼟㼑㼘㼒㻌㼒㼕㼑㼘㼐㻌㻔㻭㻕㻌㻱㼘㼑㼏㼠㼞㼕㼏㻌㼒㼕㼑㼘㼐㻌㻔㼂㻛㼏㼙㻕㻱㼘㼑㼏㼠㼞㼕㼏㻌㼒㼕㼑㼘㼐㻌㻔㼂㻛㼏㼙㻕㻌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㻝䠊䛿䛨䜑䛻㻌
㼀㼍㼎㼘㼑㻌㻞㻌㻿㼜㼑㼏㼕㼒㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻌㻯㼛㼕㼘㻌㻺㼛㻚㻌
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䜲䝑䝖䝸䜴䝮⣔㉸㟁ᑟ䝁䜲䝹䛾ᐇᶵ㐺⏝䜢┠ᣦ䛧䛶䠈㧗☢ሙ㻵㼚㼚㼑㼞㻌㼐㼕㼍㻚㻌㻔㼙㼙㻕㻌
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ᑟ෭༷䝅䝇䝔䝮䛻䛚䛔䛶䠈୰ᚰ☢ሙ 㻠㻌 㼀 ௨ୖⓎ⏕ྍ⬟䛺䜲䝑㻴㼕㼓㼔㼠㻌㻔㼙㼙㻕㻌
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䝖䝸䜴䝮⣔㉸㟁ᑟ䝁䜲䝹䜢㛤Ⓨ䛧䛯䛾䛷ሗ࿌䛩䜛䠊㻌㼀㼡㼞㼚㼟㻌
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౑⏝䛧䛯⥺ᮦ䛾ㅖඖ䜢 㼀㼍㼎㼘㼑㻌㻝 䛻♧䛩䠊⥺ᮦ䛿䠈☢ሙ≉ᛶ㻺㻌㼢㼍㼘㼡㼑㻌
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䛾ྥୖ䛜ぢ㎸䜎䜜䜛ேᕤ䝢䞁ධ䜚⥺ᮦ䜢౑⏝䛧䛯䠊䜎䛯䠈ヨ㻌స䛧䛯 㻝㻞 ಶ䛾䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䛾ㅖඖ䜢 㼀㼍㼎㼑㼘㻌 㻞 䛻
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♧䛩䠊䛣䛣䛷䠈㼀㼍㼎㼘㼑㻌 㻞 䛻䛿䠈ᾮయ❅⣲୰䛷䛾㏻㟁ヨ㦂䛻䜘䜚
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ᐃ䛧䛯䝁䜲䝹 㻵㼏㻔㻝㻜㻙㻢㻌 㼂㻛㼏㼙 ᐃ⩏㻕䛚䜘䜃䝁䜲䝹 㼚 ್㻔㻝㻜㻙㻤䡚
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㻝㻜㻙㻣㻌 㼂㻛㼏㼙 ᐃ⩏㻕䜢ే䛫䛶♧䛧䛶䛔䜛䠊㻝㻞 ಶ䛾䝁䜲䝹䛿ఏᑟ䛻
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䛶෭༷䛩䜛䛯䜑䛻ᶞ⬡ྵᾐ䛥䜜䛶䛔䜛䛜䠈ྵᾐ䛻䜘䜛ຎ໬䛾
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᭷↓䜢ㄪ䜉䜛䛯䜑䛻䝁䜲䝹 㻵㼏 䛜᭱䜒ప䛔㻏㻟 䝁䜲䝹䛻㛵䛧䛶䛿䠈
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㻲㼕㼓㻚㻝 䛻♧䛩䜘䛖䛻ᶞ⬡ྵᾐ๓ᚋ䛷䛾䝁䜲䝹 㼂㻵 ≉ᛶ䜢ẚ㍑䛧
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䛯䠊ྵᾐ๓ᚋ䛷䛾≉ᛶ䛿䠈㻝㻜㻙㻥䡚㻝㻜㻙㻣㻌 㼂㻛㼏㼙 䛾㡿ᇦ䛷䜋䜌୍㻌⮴䛧䛶䛚䜚䠈ᶞ⬡ྵᾐ䜢䛧䛯䛣䛸䛻䜘䜛ຎ໬䛿䛺䛔䛸ゝ䛘䜛䠊ヨస䛧䛯 㻝㻞 ಶ䛾䝁䜲䝹䛾 㻵㼏 䛚䜘䜃 㼚 ್䜢ẚ㍑䛩䜛䛸䠈ከᑡ䛾䜀㼚㼛㻌㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐㻝㻜㻙㻣㼕㼙㼜㼞㼑㼓㼚㼍㼠㼑㼐䜙䛴䛝䛜ぢ䜙䜜䜛䛜䠈䛣䜜䛿⥺ᮦ䛾㛗ᡭ᪉ྥ䛾≉ᛶ䛾䜀䜙䛴䛝䛾ᙳ㡪䛸⪃䛘䜙䜜䜛䠊㻌㻌㻝㻜㻙㻤㻟䠊ఏᑟ෭༷ヨ㦂㻌
ヨస䛧䛯䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢㍈᪉ྥ䛻✚ᒙ䛧䠈㻠✚ᒙ㻔㻏㻡䡚㻏㻤㻕䠈㻤 ✚ᒙ㻔㻏㻝䡚㻏㻤㻕䠈㻝㻞 ✚ᒙ㻔㻏㻝䡚㻏㻝㻞㻕䝁䜲䝹䛸ẁ㝵ⓗ䛻ヨస䛧䠈ఏᑟ෭༷䛻䛶㏻㟁ヨ㦂䜢ᐇ᪋䛧䛯䠊䛣䛣䛷䠈
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✚ᒙ䝁䜲䝹䛿䠈䝁䜲䝹ෆ࿘䛚䜘䜃እ࿘䛷㟁Ẽⓗ䛻᥋⥆䛥䜜䛶㻯㼡㼞㼞㼑㼚㼠㻌㻔㻭㻕䛚䜚䠈㻞 ᯛ䛾䝟䞁䜿䞊䜻䝁䜲䝹䛤䛸䛻 㻜㻚㻞㻡㻌㼙㼙 䛾䜰䝹䝭ᯈ䜢ྲྀ䜚㻲㼕㼓㻚㻝㻌㻱㻙㻵㻌㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㻌㼍㼠㻌㻣㻣㻌㻷㻌 㻔㻯㼛㼕㼘㻌㻺㼛㻚㻌㻏㻟㻕㻌௜䛡䠈ྛ䜰䝹䝭ᯈ䛾ඛ➃䜢 㻳㻹 ෭෾ᶵ䛾 㻞 ẁ෭༷䝇䝔䞊䝆䛻㻌᥋⥆䛧䛶䝁䜲䝹䜢෭༷䛧䛯䠊䝁䜲䝹 ᗘ䛿 㻞 ẁ෭༷䝇䝔䞊䝆䛻㻭㼘㻌㼜㼘㼍㼠㼑㼟㻌ྲྀ䜚௜䛡䛯䝠䞊䝍䛻䜘䜚ไᚚ䛧䠈Ⓨ⏕㟁ᅽ䛿ྛ䝟䞁䜿䞊䜻䝁䜲㻏㻝㻌䝹䛾୧➃䛷 ᐃ䛧䛯䠊䜎䛯㏻㟁୰䛾䝁䜲䝹୰ᚰ☢ሙ䛿䝩䞊䝹㻏㻞㻌⣲Ꮚ䛻䜘䜚 ᐃ䛧䛯䠊䝁䜲䝹 ᗘ 㻞㻜㻌㻷 䛻䛚䛔䛶䠈㻠 ✚ᒙ䝁䜲䝹
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䛷䛿୰ᚰ☢ሙ 㻞㻚㻟㻌㼀䠈㻤 ✚ᒙ䝁䜲䝹䛷䛿 㻟㻚㻢㻌㼀 䜢㐩ᡂ䛧䠈᭱⤊㻏㻤㻌㻏㻡㻌ⓗ䛻 㻝㻞 ✚ᒙ䝁䜲䝹䛻䛚䛔䛶䠈㻞㻢㻡㻌㻭 ㏻㟁᫬䛻୰ᚰ☢ሙ 㻠㻚㻣㻌㼀
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䜢㐩ᡂ䛧䛯䠊㻝㻞 ✚ᒙ䝁䜲䝹䛾 㻞㻜㻌 㻷 䛻䛚䛡䜛㏻㟁ヨ㦂⤖ᯝ䜢㻏㻝㻝㻌㻲㼕㼓㻚㻟 䛻♧䛩䠊ఏᑟ෭༷䛻䛚䛔䛶䜒Ⰻዲ䛺㉸㟁ᑟ≉ᛶ䜢᭷䛧㻏㻝㻞㻌䛶䛚䜚䠈㻠㻚㻣㻌㼀 Ⓨ⏕᫬䛻䛚䛔䛶䜒䝁䜲䝹䛿⇕ᭀ㉮䛩䜛䛣䛸䛺䛟Ᏻ㻲㼕㼓㻚㻞㻌㻝㻞㻌㼟㼠㼍㼏㼗㼑㼐㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻌ᐃ䛻㐠㌿䛩䜛䛣䛸䛜䛷䛝䛯䠊㻌㻌㻝㻜㻝㻠䠊䜎䛸䜑㻌㻠㻚㻣㻌㼀㻝㻜㻙㻣㼅 ⣔⥺ᮦ䜢⏝䛔䛶 㻝㻞 ✚ᒙ䝁䜲䝹䜢ヨస䛧䠈ఏᑟ෭༷䝅䝇䝔䝮䛻䛚䛔䛶䠈୰ᚰ☢ሙ 㻠㻚㻣㼀 Ⓨ⏕ྍ⬟䛺㉸㟁ᑟ䝁䜲䝹䛾〇స䛻ᡂຌ䛧䛯䠊௒ᚋ䛿䠈䝁䜲䝹䛾኱ᆺ໬䜢┠ᣦ䛧䛯㛤Ⓨ䜢㐍㻝㻜㻜䜑䛶䛔䛟䠊㻌
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㻌㻝㻜㻙㻤㻱㻌㻩㻌㻠㻚㻣㽢㻝㻜㻙㻢㻡㻌㽢㻌㻵㻞㻟㻝㻜㻝㻝㻜㻞㻯㼡㼞㼞㼑㼚㼠㻌㻔㻭㻕

㻝㻜㻙㻝
㻝㻜㻟



㻲㼕㼓㻚㻟㻌㻯㼡㼞㼞㼑㼚㼠㻌㼐㼑㼜㼑㼚㼐㼑㼚㼏㼑㼟㻌㼛㼒㻌㼑㼘㼑㼏㼠㼞㼕㼏㻌㼒㼕㼑㼘㼐㻌㼍㼚㼐㻌㼏㼑㼚㼠㼞㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼕㼚㻌㼍㻌㼏㼛㼚㼐㼡㼏㼠㼕㼛㼚㻙㼏㼛㼛㼘㼑㼐㻌㼠㼑㼟㼠㻌㼍㼠㻌㻞㻜㻌㻷㻌― 154 ―

第83回

2010年度秋季低温工学・超電導学会

2A-a12

HTS コイル保護等㻾㻱㻝㻞㻟 䝁䜲䝹䛾㟁☢ຊୗ䛾ኚᙧᣲື㻌

Hoop strain (%)

Vr(MPa)VT(MPa)㻰㼑㼒㼛㼞㼙㼍㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㻾㻱㻝㻞㻟㻌㼏㼛㼕㼘㻌㼡㼚㼐㼑㼞㻌㼠㼔㼑㻌㼑㼘㼑㼏㼠㼞㼛㻙㼙㼍㼓㼚㼑㼠㼕㼏㻌㼟㼠㼞㼑㼟㼟㻌ῐ㊰㻌 ᬛ䠈Ώ㎶࿴㞝䠄ᮾ໭኱㔠◊䠅䠈すᓥ㻌 ඖ䠄≀ᮦᶵᵓ䠅䠈ᘧ⏫ᾈ஧㻘㻌 ᖹ㔝┤ᶞ㻘㻌 㛗ᒇ㔜ኵ䠄୰㒊㟁ຊ䠅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㻌㻔㼀㼛㼔㼛㼗㼡㻌㼁㼚㼕㼢㻚㻕㻘㻌㻺㻵㻿㻴㻵㻶㻵㻹㻭㻌㻳㼑㼚㻌㻔㻺㻵㻹㻿㻕㻘㻌㻿㻴㻵㻷㻵㻹㻭㻯㻴㻵㻌㻷㼛㼖㼕㻘㻌㻴㻵㻾㻭㻺㻻㻌㻺㼍㼛㼗㼕㻘㻌㻺㻭㻳㻭㼅㻭㻌㻿㼔㼕㼓㼑㼛㻌㻔㻯㼔㼡㼎㼡㻌㻱㼘㼑㼏㼠㻚㻌㻼㼛㼣㼑㼞㻌㼏㼛㻌㼘㼠㼐㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼍㼣㼍㼖㼕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㻌 ᮏ◊✲䛿䠈㉸㟁ᑟᛂ⏝ᇶ┙ᢏ⾡◊✲㛤Ⓨᴗົ䛾୍⎔䛸䛧
REBa2Cu3Oy(RE123, RE; ᕼ ᅵ 㢮 ) 䝁 䞊 䝖 ⥺ ᮦ (Coated䛶䠈᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䠄NEDO䠅䛾ጤク
conductor)䛿䠈䛭䛾㧗䛔ᶵᲔ≉ᛶ䛛䜙䠈㉸ఏᑟ☢Ẽ䜶䝛䝹䜼䛻䜘䜚ᐇ᪋䛧䛯䜒䛾䛷䛒䜛.
䞊㈓ⶶ䠄SMES䠅䜔ᙉ☢ሙ䝬䜾䝛䝑䝖ᛂ⏝䛜ᮇᚅ䛥䜜䛶䛔䜛䠊≉䛻䠈NEDO 䝥䝻䝆䜵䜽䝖䛸䛧䛶䠈2MJ-SMES 㛤Ⓨ䛜㐍⾜୰䛷䛒䜛䠊䛣䜜䜙䛾㉸ఏᑟ䝬䜾䝛䝑䝖㛤Ⓨ䛻䛚䛔䛶䠈㟁☢ຊ䛻䜘䜛䝁䜲䝹䛾ኚᙧᣲື䜢⌮ゎ䛩䜛䛣䛸䛿㠀ᖖ䛻㔜せ䛷䛒䜛䠊䝁䜲䝹䛾ኚᙧᣲື䜔ෆ㒊ᛂຊศᕸ䛻㛵䛧䛶䛿䠈Wilson 䛜↓㝈㛗䛾䝁䜲䝹䛻ᑐ䛧䛶ゎᯒⓗ䛺ᘧ䜢୚䛘䛶䛔䜛䛜䠈ᮏ◊✲䛷䛿䠈ከᒙᕳ䛝䛧䜶䝫䜻䝅ྵᾐ䜢⾜䛳䛯䝁䜲䝹䛻䛴䛔䛶䠈ṍ䜏䝀䞊䝆䜢⏝䛔䛶ኚᙧᣲື䜢 ᐃ䛧䛯⤖ᯝ䛻䛴䛔䛶ሗ࿌䛩䜛䠊㻞䠊ᐇ㦂᪉ἲ㻌స〇䛧䛯䝔䝇䝖䝁䜲䝹䛾௙ᵝ䜢⾲䠍䛻♧䛩䠊⏝䛔䛯⥺ᮦ䛿䠈
CVD ἲ䛻䜘䛳䛶 Hasteloy ᇶᯈୖ䛻స〇䛧䛯䠈 YGd123 ⥺ᮦ䛷䛒䜛䠊䛣䛾⥺ᮦ䜢⣙ 70 䝍䞊䞁ᕳ䛔䛶䠎䛴䛾䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢స〇䛧䠈䜶䝫䜻䝅ᶞ⬡䜢⏝䛔䛶┿✵ྵᾐ䜢⾜䛳䛯ᚋ䠈䛣䜜䜢㔜䛽䛶୍䛴䛾䝁䜲䝹䛸䛧䛯䠊䝁䜲䝹䛻䛿䠈᭱እᒙ䛸᭱ෆᒙ䛻䠐➼㓄䛷ṍ䜏䝀䞊䝆䜢ྲྀ䜚௜䛡䛯䜋䛛䠈䝁䜲䝹ୖ㠃䛻䛿䠈ᚄ᪉ྥ䛸࿘᪉ྥ䠄hoop ᪉ྥ䠅䛾ṍ䜏 ᐃ⏝䛾䝀䞊䝆䜢䠈ෆᒙ䠈୰ᒙ䠈እᒙ䛾䠏⟠ᡤ䛻㈞䜚௜䛡䠈䝁䜲䝹䛾ṍ䜏ศᕸ䛾 ᐃ䜒⾜
Fig. 1 Voltages as a function of operation current in䛳䛯䠊ヨ㦂䛿䠈ᮾ໭኱Ꮫ㔠ᒓᮦᩱ◊✲ᡤᙉ☢ሙ䝉䞁䝍䞊䛾኱back-up field of 11T.
ཱྀᚄ 11T ㉸ఏᑟ䝬䜾䝛䝑䝖ෆ㒊䛾኱ᆺ䜽䝷䜲䜸䝇䝍䝑䝖䜢ᤄධ䛧䠈ᾮయ䝦䝸䜴䝮୰䝞䝑䜽䜰䝑䝥☢ሙ 11T ୰䛷⾜䛳䛯䠊
I200 x I250
㻟䠊⤖ᯝ䛸㆟ㄽ㻌
10 Iop=214A Back up =11T
700
ᛂຊ䛿ᇶᯈཌ䜏㻔㻜㻚㻝㼙㼙㻕䛷ィ⟬㻌 ᅗ䠍䛻䝁䜲䝹䛾㏻㟁᫬䛾㟁ᅽ ᐃ⤖ᯝ䜢♧䛩䠊䝞䝑䜽䜰䝑䝥
600
8
11T ୰䛻䛚䛔䛶䠈୧䝁䜲䝹䛸䜒 150A ㏆ഐ䛛䜙㟁ᅽ䛜Ⓨ⏕䛧䛯䠊୍ᅇ┠䛸䠎ᅇ┠䛾㏻㟁䛷䛿䠈୧䝁䜲䝹䛸䜒䜋䜌ྠ䛨㟁ᅽ䛜Ⓨ
500
6Vr(MPa)⏕䛧䛶䛚䜚䠈䝁䜲䝹⮬㌟䛾ຎ໬䛜↓䛔䛣䛸䛜ศ䛛䜛䠊୍᪉䛷୰
400
VT(MPa)㛫㟁ᴟ䛛䜙䛿୍ᅇ┠䛾㏻㟁䛷䛿㟁ᅽⓎ⏕䛧䛶䛔䛺䛔䛜䠈䠎ᅇ
4
BJR
V
(MPa)
T
┠䛷䛿ప㟁ὶ䛛䜙㟁ᅽ䛜Ⓨ⏕䛧䠈䠏ᅇ┠䛷䛭䛾್䛜䛥䜙䛻኱
300
2䛝䛟䛺䛳䛶䛔䜛䠊䜎䛯䛭䛾㝿 214A 䛾㏻㟁䛷䠈㟁ᅽ䛜ᛴ⃭䛻኱
200䛝䛟䛺䜚୰㛫㟁ᴟ䛜◚ᦆ䛧䛯䠊11T ୰䛷᭱኱㟁ὶ 214A ὶ䛧䛯0᫬䛾䝁䜲䝹ෆ㒊ᛂຊ䜢 BJR 䛸 Wilson 䛾ᘧ䛷ィ⟬䛧䛯⤖ᯝ䜢
100-2ᅗ䠎䛻♧䛩䠊BJR 䛿⥺ᮦ䛜⊂❧䛻ኚᙧ䛩䜛䛣䛸䜢௬ᐃ䛧䛶䛔0
100 105 110 115 120 125䜛䛯䜑䠈䝁䜲䝹እഃ䛻⾜䛟䛻ᚑ䛳䛶㟁☢ᛂຊ䛜ቑຍ䛩䜛䛣䛸䛜ศ䛛䜛䠊୍᪉䛷䠈䝁䜲䝹䛜୍యኚᙧ䜢䛩䜛ሙྜ䛾 Wilson 䛾ᘧr(mm)䛷䛿䠈㏫䛻䝁䜲䝹᭱ෆᒙ䛷ᛂຊ䛜᭱኱䛸䛺䜛䠊䛣䜜䛿䠈ᅗ䛻♧
Fig. 2 Calculated stress distribution in 11T and Iop=214A.
䛧䛯䜘䛖䛻䠈䝁䜲䝹ᚄ᪉ྥ䛾ᛂຊ䛜ᘬ䛳ᙇ䜚䛸䛺䜚䠈እഃ䛾⥺䛜ෆഃ䜢ᘬ䛳ᙇ䜛䛣䛸䛷䠈ᛂຊ䛜ຍ⟬䛥䜜䜛䛯䜑䛷䛒䜛䠊ᅗ䠎
0.2
BBack-up=11.0 T T=4.2K(LHe)䛿䠈䝁䜲䝹ୖ㠃䛻ྲྀ䜚௜䛡䛯ṍ䜏䝀䞊䝆䛷 ᐃ䛧䛯䝁䜲䝹࿘᪉ྥ䛾ṍ䜏䛷䛒䜛䠊䛣䛾⤖ᯝ䠈㟁☢ຊ䛻䜘䛳䛶ㄏ㉳䛥䜜䛯ṍ䜏䛿䠈䝁䜲䝹እഃ䛻ྥ䛛䛳䛶ῶᑡ䛩䜛䛣䛸䛜ศ䛛䛳䛯䠊ᚑ䛳䛶䠈
0.15
ᅗ䠎䛾⤖ᯝ䛸↷䜙䛧ྜ䜟䛫䜛䛸䠈Wilson 䛾ᘧ䛻䜘䜛⤖ᯝ䛻ᐃᛶⓗ䛻୍⮴䛩䜛⤖ᯝ䛸䛺䜚䠈ྵᾐ䝁䜲䝹䛜୍యኚᙧ䛩䜛䛣䛸䛜♧0.1
၀䛥䜜䜛䠊ᚄ᪉ྥ䛾ṍ䜏 ᐃ䛺䛹䛾⤖ᯝ䜢ྜ䜟䛫䛶䠈䝁䜲䝹ኚᙧ䛸䝁䜲䝹ෆ㒊䛾≧ែ䛺䛹䛻䛴䛔䛶䛾ヲ⣽䛻䛴䛔䛶䛿ᙜ᪥㆟ㄽ䛩䜛䠊
0.05
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㼠㼔㼑㻌㼠㼑㼟㼠㻌㼏㼛㼕㼘㻌
ෆᚄ㻌
㻔㼙㼙㻕㻌

እᙧ㻌
㻔㼙㼙㻕㻌

ཌ䛥㻌
㻔㼙㼙㻕㻌

㻞㻜㻜㻌

㻞㻠㻤㻚㻠㻥㻌
㻞㻠㻤㻚㻣㻝㻌

㻝㻝㻚㻤㻥㻌

䝍䞊䞁ᩘ㻌

⥺ᮦ㛗㻌
㻔㼙㻕㻌

⥺ᮦཌ
㻔㼙㼙㻕㻌

㻢㻤㻌
㻣㻝㻌

㻠㻣㻚㻥㻌
㻡㻜㻚㻜㻌

㻜㻚㻟㻢㻌
㻜㻚㻟㻠㻌

― 155 ―

0100

Iop=50A
Iop=100A
Iop=150A

Iop=200A
Iop=213A

105

110
115
120
125
R (mm)
Fig. 3 Measured strain distribution at 11T and various Iop.

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2010年度秋季低温工学・超電導学会

2A-a13

HTS コイル保護等㼀㻲㻭㻙㻹㻻㻰㻌ἲ㻌㼅㻮㻯㻻㻌䝔䞊䝥⥺ᮦ䜢⏝䛔䛯㟁ὶ䝸䞊䝗䛾㛤Ⓨ䐢䠄㞟ྜᆺ㉸㟁ᑟ㟁ὶ䝸䞊䝗䛾స〇䛸䛭䛾≉ᛶ䠅
Development of current lead prepared by the TFA-MOD processed YBCO tapes 䐢(Assembled superconducting current lead and its properties)▼஭㻌 㞝୍䚸ᆏ஭㻌 ⿱㈗䚸ᰘ⏣㻌 ࿴ᶞ䚸ᒣ⏣㻌 ㇏䚸ኴยᕝ㻌 ᜤ἞䠄ᮾᾏ኱䠅䚸ሷཎ㻌 ᩗ䠄ᮾᾏ኱䚸⌧஑኱㝔䠅ᑠἨ㻌 ຮ䚸㟷ᮌ㻌 ⿱἞䠄᫛࿴㟁⥺䠅䚸⏣ᮧ㻌 ோ䚸୕ᡞ㻌 ฼⾜䠄᰾⼥ྜ⛉Ꮫ◊✲ᡤ䠅ISHII Yuichi, SAKAI Yuki, SHIBATA Kazuki, YAMADA Yutaka, TACHIKAWA Kyoji, SHIOHARA Kei (Tokai University);
KOIZUMI Tsutomu, AOKI Yuji (SWCC); TAMURA Hitoshi, MITO Toshiyuki (NIFS)
E-mail:0BAZM005@mail.tokai-u.jp
VVCu-Cu
Cu-Cu

㻝䠊䛿䛨䜑䛻
TFA-MOD ἲ䛻䜘䜚స〇䛧䛯 YBCO 䝔䞊䝥⥺ᮦ䜢 5 ᮏ⏝䛔

VCu
V
Cu+
(-)

VV
YBCO
YBCO

䛯㟁ὶ䝸䞊䝗䝴䝙䝑䝖䜢 10 ⤌୪ิ䛻᥋⥆䛧䛯㞟ྜᆺ㉸㟁ᑟ㟁

V
VCu
Cu-(+)

ὶ䝸䞊䝗䛻䛴䛔䛶䚸㏻㟁≉ᛶཬ䜃⇕౵ධ㔞➼䜢ホ౯䛧䛯䛾䛷ሗ࿌䛩䜛䚹㻞䠊ᐇ㦂᪉ἲ
TFA-MOD ἲ䛻䜘䜚స〇䛧䛯 YBCO ⥺ᮦ䛿䚸ᖜ 5 mm䚸ཌ䛥
100 ȝP 䛾 HastelloyTM ᇶᯈୖ䛻㓟໬≀䛾୰㛫ᒙ䜢⤒䛶ཌ䛥
1.5 ȝm 䛾 YBCO ㉸㟁ᑟᒙ䚸䛭䛾ୖ䛻 15 ȝm 䛾 Ag ಖㆤᒙ䛛䜙ᵓᡂ䛥䜜䜛䚹Fig. 1 䛻ヨస䛧䛯㟁ὶ䝸䞊䝗䝴䝙䝑䝖䛾እほཬ䜃Fig. 1 HTS current lead unit prepared by five YBCO tapes.

ᶍᘧᅗ䜢♧䛩䚹YBCO ⥺ᮦ 5 ᮏ䜢ᖜ 44 mm䚸ཌ䛥 1 mm䚸㛗䛥
190 mm 䛾 GFRP ᯈ䛷⿵ᙉ䛧䚸⥺ᮦ୧➃䜢 Cu 㟁ᴟ䛻䝝䞁䝎᥋

Voverallྜ䛧䛯㟁ὶ䝸䞊䝗䝴䝙䝑䝖䜢 10 ⤌స〇䛧䛯䚹ྠ䝴䝙䝑䝖䛾ᾮయ❅⣲୰䚸⮬ᕫ☢ሙୗ䠄@77 K, s. f. 䠅䛻䛚䛡䜛 Ic ್䛿 408 A䡚534

VCu(-)A 䛾⠊ᅖ䛷ᖹᆒ⣙ 460 A 䛷䛒䜚䚸䜎䛯䚸ྠ䝴䝙䝑䝖䛻౑⏝䛧䛯

Vunit

VCu(+)

10 ⤌ 50 ᮏ䛾 YBCO ⥺ᮦ䛾 Ic ್䛾ྜィ䛿⣙ 4600 A 䛷䛒䛳䛯䚹
Fig. 2 䛻㟁ὶ䝸䞊䝗䝴䝙䝑䝖 10 ⤌䜢୪ิ䛻㓄⨨䛧䛯㞟ྜᆺ㉸㟁ᑟ㟁ὶ䝸䞊䝗䛾እほ෗┿䜢♧䛩䚹10 ゅᙧ≧䛾 Cu 㟁ᴟ䛾እ࿘㒊䛻ྠ䝴䝙䝑䝖䜢 10 ⤌䚸In ⟩䜢㛫䛻ᣳ䜣䛷䝪䝹䝖䛷⥾⤖䛧䛯䚹㏻㟁ヨ㦂䛿᰾⼥ྜ⛉Ꮫ◊✲ᡤ䛻䜘䜚⾜䛳䛯䚹㻟䠊ᐇ㦂⤖ᯝ䛚䜘䜃⪃ᐹ
Fig. 3 䛻㞟ྜᆺ㉸㟁ᑟ㟁ὶ䝸䞊䝗 4000 A䚸10 ศ㛫ಖᣢ㏻㟁

Fig. 2㻌 HTS current lead assembled from ten units.

᫬䛾㟁ὶ䝸䞊䝗䝴䝙䝑䝖㛫䠄Vunit 䠅䚸ṇᴟഃ䛚䜘䜃㈇ᴟഃ䛾 10ゅᆺ Cu 㟁ᴟ䛸ྛ䝴䝙䝑䝖䛾᥋⥆᢬ᢠ䠄VCu(+) 䚸VCu(-) 䠅ཬ䜃㞟ྜᆺ㉸㟁ᑟ㟁ὶ䝸䞊䝗඲య䛷䛾Ⓨ⏕㟁ᅽ䠄Voverall 䠅䛻䛴䛔䛶4,000 A (@77 K, s. f.)♧䛩䠄@77 K, s. f. 䠅䚹㏻㟁㟁ὶ 4000 A 䛷䛿 50 ᮏ䛾 YBCO ⥺ᮦ඲䛶䛻㟁ᅽ䛿Ⓨ⏕䛫䛪䚸10 ศ㛫Ᏻᐃ䛧䛶㏻㟁䛜ฟ᮶䛯䚹10ゅᙧ≧䛾 Cu 㟁ᴟ㒊䛾㟁ᅽ䛿㏻㟁㟁ὶ䛸ඹ䛻䜋䜌┤⥺ⓗ䛻ቑຍ䛧䚸4000 A 䛷䛿 VCu(+) 䛸 VCu(-) 䛿⣙ 1 mV 䛸 0.7 mV䚸ྛ䝴䝙䝑䝖඲య䛾㟁ᅽ䛿 0.3 mV 䛷䚸Voverall 䛿⣙ 2 mV 䛸ప᢬ᢠ䛾᥋⥆䛜ᐇ⌧䛷䛝䛯䚹䛣䛾䛸䛝 Cu 㟁ᴟ㒊䛾䝆䝳䞊䝹Ⓨ⇕㔞䛿䚸ᾮయ❅⣲୰䛷ᩘ W ⛬ᗘ䛷䛒䜛䚹䜎䛯䚸㏻㟁㟁ὶ 4300 A ௜㏆䜘
䜚 YBCO 䝔䞊䝥䛻㟁ᅽ䛜Ⓨ⏕䛧ጞ䜑䜛䛜䚸5000 A䚸10 ศ㛫䛾
㏻㟁䛜ྍ⬟䛷䛒䛳䛯䚹ㅰ㎡ᮏ◊✲䛿ᮾᾏ኱Ꮫ䛸᫛࿴㟁⥺䜿䞊䝤䝹䝅䝇䝔䝮䞞䛾ඹྠ◊✲䛾୍㒊䛷䛒䜚䚸㉸㟁ᑟᛂ⏝ᇶ┙ᢏ⾡㛤Ⓨ(NEDO)䝥䝻䝆䜵䜽䝖䛾ᡂᯝ䜢ᘬ⏝䛧䛶䛔䜛䚹

Fig. 3 Transport current of 4000 A at 77 K for the HTS
current lead assembled from ten units.

― 156 ―

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2010年度秋季低温工学・超電導学会