1B-a01

遮蔽電流磁場㻾㻱㻮㻯㻻 䝟䞁䜿䞊䜻䝁䜲䝹䛾㐽ⶸ㟁ὶ☢ሙ⡆᫆ィ⟬ἲ㻌䇶➼౯ᅇ㊰ィ⟬ἲ䇶㻌㻭㻌㻲㼍㼏㼕㼘㼑㻌㻿㼕㼙㼡㼘㼍㼠㼕㼛㼚㻌㻹㼑㼠㼔㼛㼐㻌㼛㼒㻌㻿㼏㼞㼑㼑㼚㼕㼚㼓㻌㻯㼡㼞㼞㼑㼚㼠㻙㻵㼚㼐㼡㼏㼑㼐㻌㻲㼕㼑㼘㼐㻌㼕㼚㻌㻾㻱㻮㻯㻻㻌㻼㼍㼚㼏㼍㼗㼑㻌㻯㼛㼕㼘㻌㻙㻭㼚㻌㻱㼝㼡㼕㼢㼍㼘㼑㼚㼠㻌㻱㼘㼑㼏㼠㼞㼕㼏㼍㼘㻌㻯㼕㼞㼏㼡㼕㼠㻌㻹㼛㼐㼑㼘㻙㻌㻌㔝ཱྀ ⪽䠄໭኱䠅䠗HAHN Seungyong䠄䝋䜴䝹኱䠅䠗ᒾబ ᖾ࿴䠄MIT䠅
NOGUCHI So (Hokkaido Univ.); HAHN Seungyong (Seoul National Univ.); IWASA Yukikazu (MIT)E-mail: noguchi@ssi.ist.hokudai.ac.jp㻌㻝䠊䛿䛨䜑䛻㻌
ྠᵝ䛻䠈ྛ䝟䞁䜿䞊䜻㛫䛾㐽ⶸ㟁ὶᅇ㊰䛾┦஫䜲䞁䝎䜽䝍䞁๓ᅇ䠄➨ 94 ᅇ䠅䛾ప ᕤᏛ䞉㉸㟁ᑟᏛ఍◊✲Ⓨ⾲఍䛷䠈䝇䜒ᑟฟ䛷䛝䜛䠊㻌ᡃ䚻䛿 REBCO 䝟䞁䜿䞊䜻䝁䜲䝹䛾㐽ⶸ㟁ὶ☢ሙ⡆᫆ィ⟬᭱ᚋ䛻䠈㐽ⶸ㟁ὶ➼౯ᅇ㊰䛾᢬ᢠ Rsci 䛿䠈௨ୗ䛾㛵ಀ䜢ἲ䜢ᥦ᱌䛧䛯䠊ᥦ᱌ἲ䛷䛿䠈䛣䜜䜎䛷[1]䛾䜘䛖䛺᭷㝈せ⣲ἲᣢ䛴䛣䛸䛸䛩䜛䠊
Rsci Rrei ( I Ti  2 I sci ) u 2 u 2䛺䛹䛾㧗ᗘ䛺㟁☢ሙィ⟬ἲ䜢ᚲせ䛸䛫䛪䠈㐽ⶸ㟁ὶ䛻㛵䛩(5)䜛䜲䞁䝎䜽䝍䞁䝇 LSC 䛸 REBCO 䝔䞊䝥㠃䜢㙐஺䛩䜛ᖹᆒ☢ሙ
ࡓࡔࡋ㸪
n 1
Bav 䛛䜙ᐜ᫆䛻㐽ⶸ㟁ὶ☢ሙ䜢⟬ฟ䛧䛯䠊⟬ฟ⢭ᗘ䛿䠈䛭䜜Ec § I Ti  2 I sci ·¨¨¸¸ u " i䜋䛹㧗䛟䛿䛺䛔䛜䠈䜸䞊䝎⛬ᗘ䛷䛾୍⮴䛜ぢ䜙䜜䛯䠊ྠ᫬䛻䠈
(6)
Rrei ( I Ti  2 I sci )I ci ©
I ci¹
ၥ㢟Ⅼ䛸䛧䛶䠈䐟ྛ䝟䞁䜿䞊䜻䝁䜲䝹䛾㐽ⶸ㟁ὶ䛾┦஫స⏝䛾⪃៖䛸䐠㈇Ⲵ⋡䛻౫Ꮡ䛩䜛㐽ⶸ㟁ὶ≉ᛶ䛾ṇ☜䛺䝰䝕䝹ࡇࡇ࡛㸪 ˜i ࡣࢥ࢖ࣝ i ࡢࢸ࣮ࣉ㛗࡛࠶ࡾ㸪n ್ࣔࢹࣝࢆ᥇
໬䛜䛒䛳䛯䚹䛥䜙䛻䠈NI䠄No-Insulation䠅䝁䜲䝹䜈䛾㐺⏝䛜ᅔ⏝ࡋ࡚࠸ࡿ㸬㻌
㞴䛷䛒䜛䛺䛹䛾ၥ㢟䜒ᣲ䛢䜙䜜䜛䠊ゎᯒ⤖ᯝ䛻㛵䛧䛶䛿䠈Ⓨ⾲ᙜ᪥䛻ሗ࿌䛩䜛䠊䛭䛣䛷䠈ᮏሗ࿌䛷䛿䠈䛣䜜䜙䛾ၥ㢟Ⅼ䜢ゎỴ䛩䜉䛟䠈᪂䛯䛻㻌㐽ⶸ㟁ὶ䜢⟬ฟ䛩䜛䛯䜑䛾➼౯ᅇ㊰ィ⟬ἲ䜢ᥦ᱌䛩䜛䠊䛣
It䛾ᡭἲ䛷䛿䠈ྛ䝟䞁䜿䞊䜻䝁䜲䝹㛫䛾㐽ⶸ㟁ὶ䛾┦஫ᖸ΅䜒
Msci,Ti
Ii
Icti⪃៖䛷䛝䠈NI 䝁䜲䝹䜈䛾㐺⏝䜒ᐜ᫆䛻䛺䜛䠊䛥䜙䛻䠈㐽ⶸ㟁ὶ䛾ῶ⾶䛾ᵝᏊ䛺䛹䜒䝅䝭䝳䝺䞊䝅䝵䞁䛷䛝䜛䠊㻌㻞䠊㐽ⶸ㟁ὶ☢ሙィ⟬➼౯ᅇ㊰ἲ㻌䜎䛪䠈Fig. 1 䛻♧䛩䜘䛖䛺」ᩘ䛾䝟䞁䜿䞊䜻䝁䜲䝹䛻ᑐ䛩䜛➼౯ᅇ㊰䜢⪃䛘䜛䠊䛯䛰䛧䠈Fig. 1 ୰䛷䛿䠈䠍ಶ䛾䝅䞁䜾䝹䞉䝟䞁䜿䞊䜻䜢䠍䛴䛾 LR ୪ิᅇ㊰䛸䛧䛶⾲⌧䛧䛶䛔䜛䠊㯮Ⰽ䛷♧䛥䜜䛯➼౯ᅇ㊰䛿䠈ᚑ᮶䛛䜙 NI 䝁䜲䝹䛾䝰䝕䝹䛸䛧䛶౑⏝䛥䜜䛶䛝䛯➼౯ᅇ㊰[2]䛸ྠ୍䛷䛒䜛䠊ᥦ᱌ἲ䛷䛿䠈ᚑ᮶䛾➼౯ᅇ㊰䛻䠈㉥Ⰽ䛷♧䛧䛯㐽ⶸ㟁ὶ䛻㛵䛩䜛➼౯ᅇ㊰䛚䜘䜃┦஫䜲䞁䝎䜽䝍䞁䝇䜢㏣ຍ䛩䜛䠊䛭䜜䛮䜜䛾䝟䝷䝯䞊䝍䛾⟬ฟ᪉ἲ䛿௨ୗ䛾䛸䛚䜚䛷䛒䜛䚹䜎䛪䠈㐽ⶸ㟁ὶ䛻ᑐ䛩䜛 REBCO 䝔䞊䝥ᕳ⥺䛾䜲䞁䝎䜽䝍䞁䝇 Lsci 䜢ồ䜑䜛䠊Fig. 2 䛾䜘䛖䛻䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢ᒎ㛤䛧䛯䝅䞊䝖䜢௬ᐃ䛩䜛䛸䠈䛭䛾䜲䞁䝎䜽䝍䞁䝇 LSC 䛿௨ୗ䛾ᘧ䛛䜙ồ䜑䜙䜜䜛䠊P 0 N i2 Ŝi
LSCi
(1)
di

Rsci

Msci,scj䛯䛰䛧䠈㻌b̂sci,T j diDsci,T ji

P0 Ni

(2)

b̂sci,T j Ŝi N i 㻌

(3)㻌

(4)

䛷䛒䜚䠈 b̂sci,T j 䛿䝁䜲䝹 j 䛻 1 A ㏻㟁䛧䛯᫬䛻䝁䜲䝹 i 䛾䝔䞊䝥ᖹ㠃䛻㙐஺䛩䜛ᖹᆒ☢ሙ䜢⾲䛩䠄䛯䛰䛧䠈㐽ⶸ㟁ὶ䛾ᙳ㡪䛿䛺䛟䠈䝔䞊䝥ෆ䠄䜒䛧䛟䛿 REBCO ᒙ䠅䛻ᆒ୍䛻㟁ὶ䛜ὶ䜜䛶䛔䜛䛸䛩䜛䠅䠊㻌

Li

Rscj

Rsti

Rrei

Mscj,Tj

Lscj

Ictj
Lj

Rrej

ith single pancake coil

Rcti

Ij

Rctj

jth single pancake coil

Rstj

Fig. 1.
Equivalent circuit model taking into accountscreening current.
ravd䛣䛣䛷䠈ȝ0䠈N䠈 Ŝ 䠈d 䛿䛭䜜䛮䜜┿✵㏱☢⋡䠈䝍䞊䞁ᩘ䠈䠍䝍䞊䞁䛒䛯䜚䛾䝔䞊䝥㠃✚䠈REBCO 䝅䞁䜾䝹䞉䝟䞁䜿䞊䜻䝁䜲䝹䛾ཌ䛥䛷䛒䜛䠊
⥆䛔䛶䠈䝁䜲䝹 i 䛸㐽ⶸ㟁ὶ䛸䝟䞁䜿䞊䜻䝁䜲䝹 j 䛸䛾┦஫䜲䞁䝎䜽䝍䞁䝇 M sci,T j 䛿䠈

dI
dI
Lsci sci  M sci,T j T j =0dtdt䛾㛵ಀ䛛䜙䠈௨ୗ䛾䜘䛖䛻ồ䜎䜛䠊㻌
N)dI
M sci,T j Lsci sci LsciDsci,T j  i sci,T j
dIT j
IT j

Lsci

d
Sav

Fig. 2. REBCO single pancake coil with parameters, and thedevelopment view.
ཧ⪃ᩥ⊩
1. H. Ueda, et al. “Spatial and Temporal Behavior of Magnetic
Field Distribution Due to Shielding Current in HTS Coil for
Cyclotron Application,” IEEE Trans. Appl. Supercond., vol.
23, no. 3 (2013) Art. no. 4100805.
2. S. Hahn, et al. “HTS Pancake Coils Without Turn-to-Turn
Insulation” IEEE Trans. Appl. Supercond., vol. 21, no. 3, pp.
1592-1595 (2011).

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第95回

2017年度秋季低温工学・超電導学会

1B-a02遮蔽電流磁場䝬䝹䝏䝣䜱䝷䝯䞁䝖㧗 ㉸㟁ᑟ⥺ᮦ䛷㻌ᕳ⥺䛥䜜䛯㧗 ㉸㟁ᑟ䝁䜲䝹䛾㐽ⶸ㟁ὶゎᯒ㻌㻺㼡㼙㼑㼞㼕㼏㼍㼘㻌㻿㼕㼙㼡㼘㼍㼠㼕㼛㼚㻌㼛㼚㻌㼟㼏㼞㼑㼑㼚㼕㼚㼓㻌㼏㼡㼞㼞㼑㼚㼠㻌㼕㼚㻌㻴㼀㻿㻌㼏㼛㼕㼘㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㼙㼡㼘㼠㼕㼒㼕㼘㼍㼙㼑㼚㼠㼍㼞㼥㻌㻴㼀㻿㻌㼠㼍㼜㼑㻌㻌᳜⏣㻌 ᾈྐ䠈ᑠἨ㻌 ᬛᬦ䠈┒ᕝ㻌 ⍛ு䠈㔠㻌 㘏⠊䠄ᒸᒣ኱䠅㻌㼁㻱㻰㻭㻌㻴㼕㼞㼛㼟㼔㼕㻘㻌㼀㼛㼙㼛㼍㼗㼕㻌㻷㻻㻵㼆㼁㻹㻵㻘㻌㻱㼕㼟㼡㼗㼑㻌㻹㻻㻾㻵㻷㻭㼃㻭㻘㻌㻿㼑㼛㼗㻮㼑㼛㼙㻌㻷㻵㻹㻌㻔㻻㼗㼍㼥㼍㼙㼍㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼔㼕㼞㼛㼟㼔㼕㻚㼡㼑㼐㼍㻬㼛㼗㼍㼥㼍㼙㼍㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
5(%&2 ⥺ᮦ䜔 %L ⥺ᮦ䛸䛔䛳䛯㧗 ㉸㟁ᑟ⥺ᮦ䜢⏝䛔䛯㧗☢ሙ䝁䜲䝹䜢 05, 䜔 105䠈ຍ㏿ჾ䛺䛹䛻ᛂ⏝䛩䜛◊✲䞉㛤Ⓨ䛜㐍䜑䜙䜜䛶䛔䜛䚹05, 䜔 105䠈ຍ㏿ჾᛂ⏝䛷䛿㧗⢭ᗘ☢ሙศ䜔ᕸ☢ሙᆒ୍ᗘ䠈᫬㛫Ᏻᐃᛶ䛜ồ䜑䜙䜜䜛䛜䠈㐽ⶸ㟁ὶ☢ሙ䛜ၥ㢟䛸䛺䜛䚹5(%&2 ⥺ᮦ䛿䠈ⷧ⭷䝔䞊䝥ᙧ≧䛷䛒䜛䛯䜑䠈≉䛻㐽ⶸ㟁ὶ䛜㢧ⴭ䛻⏕䛨䜛䛜䠈㉸㟁ᑟᒙ䜢⣽⥺໬䛩䜛䛣䛸䛷㐽ⶸ㟁ὶ☢ሙ䛜ᢚไ䛥䜜䜛䛣䛸䛜ᮇᚅ䛥䜜䜛䚹䛧䛛䛧䠈䝬䝹䝏䝣䜱䝷䝯䞁䝖໬ 5(%&2 ⥺ᮦ䛿䠈ᶵᲔⓗᙉᗘ䜔⇕ⓗᏳᐃᛶ䜢☜ಖ䛩䜛䛯䜑䠈㖡䝯䝑䜻䛜᪋䛥䜜䠈䛭䛾⤖ᯝ䠈ບ☢䛾㝿䛻⤖ྜ㟁ὶ䛜䝣䜱䝷䝯䞁䝖㛫䜢ὶ䜜䜛䛣䛸䛻䛺䜛>@>@䚹୍᪉䠈%L ⥺ᮦ䛿䠈ከⰺ⥺䛷䛒䜛䛯䜑䠈㐽ⶸ㟁ὶ☢ሙ䛿
5(%&2 ⥺ᮦ䜋䛹኱䛝䛟䛿䛺䛔䛜䠈䝣䜱䝷䝯䞁䝖㛫䛜䝤䝸䝑䝆䛧䛶䛔䜛⟠ᡤ䛜䛒䜚䠈⤖ྜ㟁ὶ䛜ὶ䜜䜛䛣䛸䛜▱䜙䜜䛶䛔䜛䚹䛭䛣䛷䠈ᮏⓎ⾲䛷䛿䠈䝬䝹䝏䝣䜱䝷䝯䞁䝖㧗 ㉸㟁ᑟᮦ䛷ᕳ⥺䛧䛯㧗 ㉸㟁ᑟ䝁䜲䝹䜢ᑐ㇟䛻䠈㟁☢ሙゎᯒ䛻ᇶ䛵䛔䛶䠈ᕳ⥺ෆ㟁ὶศᕸ䜔㐽ⶸ㟁ὶ☢ሙ䛻䛴䛔䛶ホ౯䛧䛯䚹㻞䠊䝬䝹䝏䝣䜱䝷䝯䞁䝖⥺ᮦ䛾ゎᯒ䝰䝕䝹㻌
)LJ  䛻௒ᅇ⪃䛘䜛䝬䝹䝏䝣䜱䝷䝯䞁䝖⥺ᮦ䛾ゎᯒ䝰䝕䝹䜢ᶍᘧⓗ䛻♧䛩䚹)LJ  D 䛿䠈䝣䜱䝷䝯䞁䝖໬䛜᪋䛥䜜䛶䛔䛺䛔⥺ᮦ䠄0RQRILODPHQW䠅䠈)LJ  E 䛿䠈䝬䝹䝏䝣䜱䝷䝯䞁䝖໬䛥䜜䛯⥺ᮦ䠄0XOWLILODPHQW䠅䠈)LJ  F 䛿䠈䝣䜱䝷䝯䞁䝖㛫䛷ᡤ䚻䝤䝸䝑䝆䛜䛒䜛⥺ᮦ䠄0XOWLILODPHQW ZLWK EULGJH䠅䛾䝰䝕䝹䛷䛒䜛䚹ᐇ㝿䛾⥺ᮦ䛷䛿䠈5(%&2 ⥺ᮦ䛷䛿⥺ᮦ࿘ᅖ䛻㖡䝯䝑䜻䛜᪋䛥䜜䛶䛚䜚䠈䜎䛯䠈%L ⥺ᮦ䛷䛿䝣䜱䝷䝯䞁䝖䛜ከᒙᵓ㐀䜢䛧䛶䛔䜛䛜䠈௒ᅇ䛿䝣䜱䝷䝯䞁䝖㛫䛾䝤䝸䝑䝆䛾ᙳ㡪䛻䛴䛔䛶䛾ึᮇ᳨ウ䛸䛧䛶䠈ⷧ⭷㏆ఝ>@䜢⏝䛔䛶ィ⟬䜢⾜䛳䛯䚹ゎᯒᑐ㇟䛾䝁䜲䝹䛻䛿䠈ᖜ  PP䠈ཌ䛥  PP䠄㉸㟁ᑟᒙ
PP䠅䛾⥺ᮦ䛸䛧䛯䚹0XOWLILODPHQW 䝰䝕䝹䛿⥺ᮦ䜢  ศ๭
䛧䠈0XOWLILODPHQWZLWKEULGJH 䝰䝕䝹䛷䛿  ศ๭䛥䜜䛯䝣䜱䝷䝯䞁䝖䛜 PP 㛫㝸䛷㞄䛸᥋⥆䛧䛔䛶䛔䜛䛸䛧䛯䚹7DEOH 䛻ゎᯒ䝰䝕䝹䝁䜲䝹䛾ㅖඖ䜢♧䛩䚹㟁ὶ䜢 $ 䜎䛷 $V 䛷ບ☢䛧䠈䛭䛾ᚋ୍ᐃ䛸䛧䛶䠈୰ᚰ☢ሙ䛾᫬㛫ኚ໬䜢ホ౯䛧䛯䚹䠊㐽ⶸ㟁ὶ☢ሙゎᯒ㻌
5(%&2 ⥺ᮦ䛾ཌ䜏᪉ྥ䛷㟁☢ሙ䛜୍ᵝ䛸䛩䜛㏆ఝ䜢⏝䛔䛶䠈✚ศ᪉⛬ᘧ䠈㧗㏿ከ㔜ᴟἲ䜔㉸㟁ᑟ≉ᛶ䜢⪃៖ྍ⬟䛺㠀⥺ᙧ᭷㝈せ⣲ἲ䜢⤌䜏ྜ䜟䛫䛯୕ḟඖ㟁☢ሙᩘ್ゎᯒ䜢⏝䛔䛶㐽ⶸ㟁ὶ☢ሙ䛾ィ⟬䜢⾜䛳䛯>@䚹ୖ㏙䛾タィ䛻ᑐ䛧䛶䠈ゎᯒ䛷䛿䠈ᐇ㝿䛾ᕳ⥺ἲ䜢⪃៖䛧䛶䠈㉸㟁ᑟᒙ䛻䛾䜏㟁ὶ䛜ὶ䜜䜛䛸䛧䛯䚹n ್䛿  ୍ᐃ䛸䛧䛯䚹ᕳ⥺䛾㟁ὶᐦᗘศᕸ䛾ᒎ㛤ᅗ䜢 )LJ  䛻♧䛩䚹䛣䛾ᅗ䛿ᕳ⥺㛗ᡭ᪉ྥ䛾⥺ᮦෆ䛾㟁ὶศᕸ䛾୍㒊䜢♧䛧䛶䛔䜛䚹
0XOWLIODPHQW 䝰䝕䝹䛷䛿䠈䝔䞊䝥➃㒊䛛䜙䝇䝸䝑䝖㒊䛻☢᮰౵ධ䛧䛶䛔䛟䛯䜑䠈㟁ὶ䛜䝣䜱䝷䝯䞁䝖䛻ἢ䛳䛶ὶ䜜䛶䛔䜛ᵝᏊ䛜䜟䛛䜛䚹0XOWLILODPHQW ZLWK EULGJH 䝰䝕䝹䛷䛿䠈䝔䞊䝥䜶䝑䝆㒊䛾㟁ὶศᕸ䛜䠈0RQRILODPHQW 䝰䝕䝹䛻㏆䛔䛜䠈୍᪉䛷䝤䝸䝑䝆㒊䜢㟁ὶ䛜Ώ䛳䛶䛔䛟䛣䛸䛜䜟䛛䜛䚹䝤䝸䝑䝆㛫㝸䛸㟁ὶศᕸ䠈㐽ⶸ㟁ὶ☢䛾ヲ⣽䛻䛴䛔䛿ᙜ᪥ሗ࿌䛩䜛䚹㸺ㅰ㎡㸼
㻌 ᮏ◊✲䛾୍㒊䛿䠈⛉◊㈝ᇶ┙◊✲ &  䛻౫䛳䛯䛣

7DEOH6SHFLILFDWLRQVRIPRGHOPDJQHW

,QQHUGLDPHWHU PP 

2XWHUGLDPHWHU PP+HLJKW PP 

1XPEHURIWXUQVîOD\HUV㻌D 0RQRILODPHQW㻌E 0XOWLILODPHQW㻌F 0XOWLILODPHQWZLWKEULGJH㻌
)LJ  0RGHOIRUPXOWLILODPHQWDU\+76WDSH

D 0RQRILODPHQW㻌E 0XOWLILODPHQW㻌F 0XOWLILODPHQWZLWKEULGJH㻌

)LJ   &XUUHQW GLVWULEXWLRQ LQ D ORQJLWXGLQDO GLUHFWLRQ RI FRLOZLQGLQJ㻌䛸䜢௜グ䛩䜛䚹㻌ཧ⪃ᩥ⊩㻌 ᳜⏣ ᾈྐ ௚䠖  ᖺᗘ᫓Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍ㅮ₇ᴫせ㞟 $S   Ṋ⸨ ඃ┿ ௚䠖  ᖺᗘ᫓Ꮨప ᕤᏛ䞉㉸㟁ᑟᏛ఍ㅮ₇ᴫ
せ㞟 $S  
 + 8HGD HW DO IEEE Trans. Appl. Supercond. 9RO  

― 21 ―

第95回

2017年度秋季低温工学・超電導学会

1B-a03遮蔽電流磁場䝁䜲䝹ᙧ≧䛜䝬䝹䝏䝣䜱䝷䝯䞁䝖ⷧ⭷㧗 ㉸ఏᑟ⥺䝁䜲䝹䛾㻌㐽ⶸ㟁ὶ☢ሙ䛻୚䛘䜛ᙳ㡪㻌㼀㼔㼑㻌㼕㼚㼒㼘㼡㼑㼚㼏㼑㻌㼛㼒㻌㻿㼔㼕㼑㼘㼐㼕㼚㼓㻙㻯㼡㼞㼞㼑㼚㼠㻙㻵㼚㼐㼡㼏㼑㼐㻌㻲㼕㼑㼘㼐㼟㻌㼕㼚㻌㻯㼛㼕㼘㼟㻌㼣㼕㼠㼔㻌㼂㼍㼞㼕㼛㼡㼟㻌㻿㼔㼍㼜㼑㼟㻌㼃㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㻹㼡㼘㼠㼕㼒㼕㼘㼍㼙㼑㼚㼠㻌㻯㼛㼍㼠㼑㼐㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌⁁➃㻌 ᝆ኱䠈㻌 ᐩỌ㻌 ┤ᶞ㻌 䠄ி኱䠅㻧㻌 ᭮ᡃ㒊㻌 ཭㍜㻌 䠄ி኱䞉Ꮫ᣺ 㻰㻯㻝䠅㻧㻌 㞵ᐑ㻌 ᑦஅ㻌 䠄ி኱䠅㻌㻹㻵㼆㻻㻮㻭㼀㻭㻌㼅㼡㼐㼍㼕䠈㻌 㼀㻻㻹㻵㻺㻭㻳㻭㻌㻺㼍㼛㼗㼕㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻧㻌㻿㻻㻳㻭㻮㻱㻌㼅㼡㼟㼡㼗㼑㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻘㻌㻶㻿㻼㻿㻌㻰㻯㻝㻕㻧㻌㻭㻹㻱㻹㻵㼅㻭㻌㻺㼍㼛㼥㼡㼗㼕㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼥㻙㼙㼕㼦㼛㼎㼍㼠㼍㻬㼍㼟㼘㻚㼗㼡㼑㼑㻚㼗㼥㼛㼠㼛㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌ᐃᩘ䛿䚸⥺ᮦ༢㛗䛷䛿䛺䛟 㻝 ᒙศ䛾⥺ᮦ㛗䛷Ỵ䜎䜛䛸⪃䛘䜙㻝䠊䛿䛨䜑䛻㻌
䜜䜛䚹୍᪉䚸㻿㻼 䛷䛿䚸⥺ᮦ➃䛛䜙☢᮰䛜౵ධ䛧䛶䛚䜚䚸䛣䛾ሙⷧ⭷㧗 ㉸ఏᑟ⥺䛷ᕳ䛛䜜䛯䝬䜾䝛䝑䝖䛷䛿䚸㐽ⶸ㟁ὶྜ䛿䚸⤖ྜ᫬ᐃᩘ䛿⥺ᮦ༢㛗䛷Ỵ䜎䜛䛸⪃䛘䜙䜜䜛䚹㻲㼕㼓㻚㻌㻟 䛻☢ሙ䠄㻿㼔㼕㼑㼘㼐㼕㼚㼓㻙㻯㼡㼞㼞㼑㼚㼠㻙㻵㼚㼐㼡㼏㼑㼐㻌 㻲㼕㼑㼘㼐㻘㻌 㻿㻯㻵㻲䠅䛻䜘䜛☢ሙ⢭㻿㻸 䛾㟁ὶಖᣢ୰䛻䛚䛡䜛 㻿㻯㻵㻲 䛾᫬㛫ኚ໬䜢♧䛧䛯䚹㖡䝯䝑ᗘ䛾పୗ䛜ၥ㢟䛸䛺䛳䛶䛔䜛䛜䚸䛣䛾 㻿㻯㻵㻲 䛾పῶ䛻䝬䝹䝏䝣䜻௜䛝䝬䝹䝏䝣䜱䝷䝯䞁䝖ⷧ⭷㧗 ㉸ఏᑟ⥺䛾 㻿㻯㻵㻲 䛿 㻝㻜㻜㻜㻌㼟䜱䝷䝯䞁䝖໬䛜᭷ຠ䛷䛒䜛䛣䛸䛜▱䜙䜜䛶䛔䜛䚹䛧䛛䛧䚸䝬䝹䝏⛬ᗘ䛷ῶ⾶䛧䚸䝰䝜䝣䜱䝷䝯䞁䝖㧗 ㉸ఏᑟ⥺䛾 㻿㻯㻵㻲 䛾䝺䝧䝣䜱䝷䝯䞁䝖໬ᚋ䛻㖡䝯䝑䜻䛥䜜䛯㖡䝯䝑䜻௜䛝䝬䝹䝏䝣䜱䝷䝯䞁䝹䛛䜙䝣䜱䝷䝯䞁䝖㛫䛜⤯⦕䛥䜜䛯䝬䝹䝏䝣䜱䝷䝯䞁䝖ⷧ⭷㧗䝖ⷧ⭷㧗 ㉸ఏᑟ⥺䛾ሙྜ䚸㖡䜢௓䛧䛶䝣䜱䝷䝯䞁䝖㛫䜢ὶ䜜㉸ఏᑟ⥺䛾 㻿㻯㻵㻲 䛻㏆䛵䛔䛶䛔䛳䛶䛔䜛䚹㻌䜛⤖ྜ㟁ὶ䛜༑ศῶ⾶䛧䛶䛿䛨䜑䛶䚸䝬䝹䝏䝣䜱䝷䝯䞁䝖໬䛜ຠᯝ䜢Ⓨ᥹䛩䜛䚹㻌ㅰ㎡㻌ᮏ◊✲䛾୍㒊䛿㻶㻿㼀㻌 㻿㻙䜲䝜䝧䛾ᨭ᥼䛻䜘䜚䚸୍㒊䛿⛉◊㈝㻞䠊ゎᯒᑐ㇟䛸ゎᯒ᮲௳㻌㻔㻶㻼㻝㻢㻤㻜㻡㻝㻠㻜㻕䛾ᨭ᥼䛻䜘䜚⾜䜟䜜䛯䚹㻌ᮏ◊✲䛷䛿䚸䝋䝺䝜䜲䝗䝁䜲䝹㻔㻿㻸㻕䛸䝅䞁䜾䝹䝟䞁䜿䞊䜻䝁䜲䝹㻔㻿㻼㻕䜢ᑐ㇟䛻䚸㖡䝯䝑䜻௜䛝䝬䝹䝏䝣䜱䝷䝯䞁䝖ⷧ⭷㧗 ㉸ཧ⪃ᩥ⊩㻌ఏᑟ⥺䛾㐽ⶸ㟁ὶ䛾᣺䜛⯙䛔䛸 㻿㻯㻵㻲 䛾ῶ⾶䛾ᵝᏊ䜢㟁☢
㻝㻚㻌 㻺㻚㻌 㻭㼙㼑㼙㼕㼥㼍㻘㻌 㼑㼠㻌 㼍㼘㻚䇾㻯㼛㼡㼜㼘㼕㼚㼓㻌 㼠㼕㼙㼑㻌 㼏㼛㼚㼟㼠㼍㼚㼠㼟㻌㼛㼒㻌 㼟㼠㼞㼕㼍㼠㼑㼐㻌ሙゎᯒ䛻䜘䜚ㄪ䜉䛯䚹㻿㻸 䛸 㻿㻼 䛾ෆᚄ䛿 㻠㻜㻌 㼙㼙䚸ᚄ᪉ྥ䛾䝍㼍㼚㼐㻌㼏㼛㼜㼜㼑㼞㻙㼜㼘㼍㼠㼑㼐㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼍㼚㼐㻌㼠㼔㼑㻌㼜㼛㼠㼑㼚㼠㼕㼍㼘㻌㼛㼒㻌䞊䞁ᩘ䛿 㻞㻜䚸㧗䛥᪉ྥ䛾䝍䞊䞁ᩘ䛿 㻤 䛷䛒䜛䚹㻿㻸 䛿 㻠 ᒙ䜢୍㼟㼠㼞㼕㼍㼠㼕㼛㼚㻌 㼠㼛㻌 㼞㼑㼐㼡㼏㼑㻌 㼟㼔㼕㼑㼘㼐㼕㼚㼓㻙㼏㼡㼞㼞㼑㼚㼠㻙㼕㼚㼐㼡㼏㼑㼐㻌 㼒㼕㼑㼘㼐㼟㻌 㼕㼚㻌ᮏ䛾⥺ᮦ䛷ᕳ䛔䛯䚹ᚄ᪉ྥ䚸㧗䛥᪉ྥ䛾⥺ᮦ䛾㛫㝸䛿 㻜㻚㻝㻌㼜㼍㼚㼏㼍㼗㼑㻌㼏㼛㼕㼘㼟㻘䇿㻌㼟㼡㼎㼙㼕㼠㼠㼑㼐㻌㼠㼛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㼙㼙 䛻⤫୍䛧䛯䚹㻲㼕㼓㻚㻌 㻝 䛻♧䛧䛯୕✀㢮䛾ⷧ⭷㧗 ㉸ఏᑟ⥺䛷ᕳ䛔䛯 㻿㻸䞉㻿㻼 䜢ᑐ㇟䛻ゎᯒ䜢⾜䛳䛯䚹⥺ᮦ䛾ᖜ䛿 㻠㻌 㼙㼙㻘㻌ཌ䛥䛿 㻜㻚㻝㻌㼙㼙㻘㻌 ㉸ఏᑟᒙ䛾ཌ䛥䛿 㻝㻚㻣㻡㻌P㼙 䛷䛒䜛䚹㉸ఏᑟ≉ᛶ䛻䛴䛔䛶䛿 㻟㻜㻌㻷 䛷䛾ᐇ ್䛛䜙䝟䝷䝯䞊䝍䜢Ỵᐃ䛧䛯䝟䞊䝁䝺䞊䝅䝵䞁㑄⛣䝰䝕䝹䜢⏝䛔䛯䚹㖡䝯䝑䜻௜䛝ⷧ⭷㧗 ㉸ఏᑟ⥺䛾䝣䜱䝷䝯䞁䝖㛫䛾ᶓ᩿᢬ᢠ䛿㖡䝯䝑䜻ᒙ䛷ᨭ㓄䛥䜜䛶䛔㻌䜛䛸௬ᐃ䛧䚸㻣㻣㻌 㻷 䛻䛚䛡䜛⤖ྜᦆኻ ᐃ䛛䜙ᚓ䛯್䜢㖡䛾᢬㻲㼕㼓㻚㻌㻝㻌 㼀㼔㼞㼑㼑㻌 㼠㼥㼜㼑㼟㻌 㼛㼒㻌 㼏㼛㼍㼠㼑㼐㻌 㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌 㼡㼟㼑㼐㻌 㼒㼛㼞㻌 㼍㼚㼍㼘㼥㼟㼑㼟㻦㻌ᢠ⋡䛾 ᗘ౫Ꮡᛶ䛻䜘䜚⿵ṇ䛧䛯್䜢⏝䛔䛯㼇㻝㼉䚹㏻㟁㟁ὶ㻔㼍㻕㻌 㼙㼛㼚㼛㼒㼕㼘㼍㼙㼑㼚㼠㻘㻌 㻔㼎㻕㻌 㼏㼛㼜㼜㼑㼞㻙㼜㼘㼍㼠㼑㼐㻌 㻞㻙㼒㼕㼘㼍㼙㼑㼚㼠㼟㻘㻌 㼍㼚㼐㻌䛿 㻝㻜㻌㼟 䛷 㻟㻜㻜㻌㻭 䜎䛷䝷䞁䝥䜰䝑䝥䛧䚸㻞㻡㻜㻜㻌㼟 㛫ಖᣢ䛧䛯䚹㻌㻔㼏㻕㻌㼕㼚㼟㼡㼘㼍㼠㼑㼐㻙㻞㻙㼒㼕㼘㼍㼙㼑㼚㼠㼟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㻟䠊ゎᯒ⤖ᯝ㻌㻲㼕㼓㻚㻌 㻞 䛻㖡䝯䝑䜻௜䛝䝬䝹䝏䝣䜱䝷䝯䞁䝖ⷧ⭷㧗 ㉸ఏᑟ⥺䛷ᕳ䛛䜜䛯 㻿㻸䞉㻿㻼 䛭䜜䛮䜜䛾㟁ὶὶ⥺ᅗ䜢♧䛩䚹㻿㻸 䛿ෆഃ䛛䜙ᩘ䛘䛶 㻝㻥 ᒙ┠䚸㻿㻼 䛿᭱ୖ㒊䛾䝁䜲䝹䛾⥺ᮦ䛾ᒎ㛤ᅗ䛷䛒䜛䚹㻿㻸 䛷䛿䚸௚䛾ᒙ䛸⧅䛜䛳䛶䛔䜛ᒙ䛾➃㻔㻸㼍㼥㼑㼞㻌 㼑㼚㼐㻕䛛䜙䛿☢᮰䛿౵ධ䛧䛶䛔䛺䛔䛜䚸䝁䜲䝹୰ኸ䛾ᖹ㠃㻔㻹㼕㼐㻙㼜㼘㼍㼚㼑㻕䛾఩⨨䛷ᆶ┤☢ሙ䛾ྥ䛝䛜཯㌿䛧䛶䛔䜛䛯䜑䚸䛣䛣䛛䜙☢᮰䛜౵ධ䛧䛶䛔䜛䚹䛩䛺䜟䛱䚸㻿㻸 䛻䛚䛔䛶䛿䚸⥺ᮦ䛾༢㛗䛜䛹䜣㻲㼕㼓㻚㻌㻟㻌 㼀㼑㼙㼜㼛㼞㼍㼘㻌㼏㼔㼍㼚㼓㼑㻌㼛㼒㻌㼠㼔㼑㻌㻿㻯㻵㻲㻌㼍㼠㻌㼏㼑㼚㼠㼑㼞㻌㼛㼒㻌㻿㻸㻌㼣㼛㼡㼚㼐㻌䛺䛻㛗䛟䛶䜒䚸㞄᥋ᒙ䛾ୖഃ䠄ୗഃ䠅䛾ྜィ䛻┦ᙜ䛩䜛⥺ᮦ㼣㼕㼠㼔㻌㻔㼍㻕㻌㼙㼛㼚㼛㼒㼕㼘㼍㼙㼑㼚㼠㻘㻌㻔㼎㻕㻌㼏㼛㼜㼜㼑㼞㻙㼜㼘㼍㼠㼑㼐㻌㻞㻙㼒㼕㼘㼍㼙㼑㼚㼠㼟㻘㻌㛗䠄⤖ᒁ䚸㻝 ᒙศ䛾⥺ᮦ㛗䠅䛾୧➃䛛䜙☢᮰䛜౵ධ䛧䝣䜱䝷䝯㼍㼚㼐㻌㻔㼏㻕㻌㼕㼚㼟㼡㼘㼍㼠㼑㼐㻙㻞㻙㼒㼕㼘㼍㼙㼑㼚㼠㼟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻚㻌䞁䝖䛾⤖ྜ䛜ゎ䛡䛶䛔䛟䛷䛒䜝䛖䛣䛸䜢ゎᯒ⤖ᯝ䛿♧䛧䛶䛔䜛䚹䛴䜎䜚䚸㻿㻸 䛻䛚䛔䛶䛿⤖ྜ㟁ὶ䛾ῶ⾶᫬ᐃᩘ䛷䛒䜛⤖ྜ᫬㻲㼕㼓㻚㻌㻞㻌 㻯㼡㼞㼞㼑㼚㼠㻌㼘㼕㼚㼑㼟㻌㼕㼚㻌㼠㼔㼑㻌㻝㻥㼠㼔㻌㼘㼍㼥㼑㼞㻌㼛㼒㻌㻿㻸㻌㼍㼚㼐㻌㼠㼔㼑㻌㻤㼠㼔㻌㻿㻼㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㼠㼔㼑㻌㼏㼛㼜㼜㼑㼞㻙㼜㼘㼍㼠㼑㼐㻌㻞㻙㼒㼕㼘㼍㼙㼑㼚㼠㼟㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻚㻌― 22 ―

第95回

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2017年度秋季低温工学・超電導学会

1B-a04

遮蔽電流磁場㻾㻱㻮㻯㻻 䝁䜲䝹䛻䛚䛡䜛⣽⥺໬ฎ⌮䛻䜘䜛㐽ⶸ㟁ὶ୙ᩚ☢ሙపῶຠᯝ䛾ゎᯒ䠖㻌㻥㻚㻠㼀 ⣭䝠䝖඲㌟⏝ 㻹㻾㻵 䝁䜲䝹䜢ᑐ㇟䛸䛧䛶㻌㻺㼡㼙㼑㼞㼕㼏㼍㼘㻌㻱㼢㼍㼘㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㻾㼑㼐㼡㼏㼠㼕㼛㼚㻌㻱㼒㼒㼑㼏㼠㻌㼛㼚㻌㻿㼏㼞㼑㼑㼚㼕㼚㼓㻙㼏㼡㼞㼞㼑㼚㼠㻌㻵㼚㼐㼡㼏㼑㼐㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㻲㼕㼑㼘㼐㻌㼎㼥㻌㻿㼏㼞㼕㼎㼕㼚㼓㻌㼕㼚㻌㻾㻱㻮㻯㻻㻌㻯㼛㼕㼘㼟㻦㻌㻥㻚㻠㼀㻙㻯㼘㼍㼟㼟㻌㻹㻾㻵㻌㻌ఀᮾ㻌 ៞ኴ䠈▼ᒣ㻌 ᩔኈ䠄᪩኱䠅䠗᳜⏣㻌 ᾈྐ䠄ᒸᒣ኱䠅䠗㔝ཱྀ㻌 ⪽䠄໭኱䠅㻌㻵㼀㻻㻌㻷㼑㼕㼠㼍䠈㻌 㻵㻿㻴㻵㼅㻭㻹㻭㻌㻭㼠㼟㼡㼟㼔㼕㻌㻔㼃㼍㼟㼑㼐㼍㻌㼁㼚㼕㼢㻚㻕㻧㻌㼁㻱㻰㻭㻌㻴㼕㼞㼛㼟㼔㼕㻌㻔㻻㼗㼍㼥㼍㼙㼍㻌㼁㼚㼕㼢㻚㻕㻧㻌㻺㻻㻳㼁㻯㻴㻵㻌㻿㼛㻌㻔㻴㼛㼗㼗㼍㼕㼐㼛㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼗㼑㼕㼠㼍㻙㼕㼠㼛㻬㼞㼡㼞㼕㻚㼣㼍㼟㼑㼐㼍㻚㼖㼜㻌㻌ᢥ䛩䜛䛣䛸䛷䜘䜚Ⰻ䛔✵㛫☢ሙᆒ୍ᗘ䜢ᚓ䜙䜜䜛䛣䛸䜢♧၀䛧㻝䠊䛿䛨䜑䛻㻌䛶䛔䜛䚹㻌ᡃ䚻䛿 㻥㻚㻠㼀 ⣭䝠䝖඲㌟⏝ 㻹㻾㻵 䝁䜲䝹䛾㛤Ⓨ䜢┠ᣦ䛧䛶䛝䛯㼇㻝㼉䚹㻾㻱㻮㻯㻻 ㉸㟁ᑟ䝁䜲䝹䛷䛿䠈㐽ⶸ㟁ὶ䛻䜘䜛୙ᩚ☢ሙ䠄௨ୗ䠈㐽ⶸ㟁ὶ☢ሙ䠅䛜䝁䜲䝹Ⓨ⏕☢ሙ䛾✵㛫ⓗᆒ୍ᛶ䜔᫬㛫ⓗᏳᐃᛶ䜢஘䛩䛣䛸䛜ၥ㢟䛸䛺䛳䛶䛔䜛䚹䛭䛾䛯䜑䠈㐽ⶸ㟁ὶ☢ሙ䜢ᩘ್ゎᯒ䛻䜘䜚ண 䛧䠈ᢚไ䞉⿵ṇ䛩䜛䛣䛸䛜ồ䜑䜙䜜䛶䛔䜛䚹㐽ⶸ㟁ὶ☢ሙ䛾పῶἲ䛾 㻝 䛴䛸䛧䛶䠈⥺ᮦ䛾⣽⥺໬ฎ⌮䛜䛒䜚䠈䛭䛾ຠᯝ䛜ඛ⾜◊✲䛻䜘䜚☜䛛䜑䜙䜜䛶䛔䜛㼇㻞㼉䚹ᮏ◊✲䛷䛿 㻥㻚㻠㼀 ⣭䝠䝖඲㌟⏝ 㻹㻾㻵 䝁䜲䝹䛻䛚䛔䛶䠈⣽⥺໬ฎ⌮䜢㐺⏝䛧䛯㝿䛾㐽ⶸ㟁ὶ☢ሙ䜢ゎᯒ䞉ホ౯䛧䛯䛾䛷ሗ࿌䛩䜛䚹㻌
㻌㻞䠊ゎᯒᑐ㇟䛸ゎᯒ᮲௳㻌ゎᯒᑐ㇟䛸䛧䛯䝰䝕䝹 㻥㻚㻠㼀 ⣭䝠䝖඲㌟⏝ 㻹㻾㻵 䝁䜲䝹䝅䝇䝔䝮䛾㓄⨨ᅗ䜢 㻲㼕㼓㻚㻝 䛻♧䛩䚹䝁䜲䝹䝅䝇䝔䝮䛿」ᩘ䛾䝟䞁䜿䞊䜻䝁䜲䝹䜢䝇䝍䝑䜽䛧䛯 㻡 䛴䛾䝇䝥䝸䝑䝖䝁䜲䝹䛷ᵓᡂ䛥䜜䛶䛔㻌䜛䚹᭱㐺໬タィ䛿ไ⣙᮲௳䜢୰ᚰ☢ሙ 㻥㻚㻠㼀䠈ෆᚄ 㻝㼙 ௨ୖ䠈㻲㼕㼓㻚㻌㻝㻌㻿㼏㼔㼑㼙㼍㼠㼕㼏㻌㼛㼒㻌㻿㼥㼟㼠㼑㼙㻌㻞䡚㻢 ḟ䛾☢ሙ୙ᆒ୍ᗘ䜢᧜ീ✵㛫 㻠㻜㻜㼙㼙㻰㻿㼂 䛻䛚䛔䛶㻌㻡㻜㼜㼜㼙 ௨ୗ䛸䛧䠈㟁ὶᐦᗘ䛿䝟䞁䜿䞊䜻䝁䜲䝹ෆ䛷୍ᵝ䛸௬㻌ᐃ䛧タィ䜢⾜䛳䛯䚹㻌⣽⥺໬䝰䝕䝹䛻䛴䛔䛶䛿䠈ᖜ 㻠㻚㻜㼙㼙 䛾⥺ᮦ䛻 㻝 䛴䛾⁁䜢᪋䛧䛯䛣䛸䜢᝿ᐃ䛧䠈ᖜ 㻞㻚㻜㼙㼙 䛾⥺ᮦ䜢୪ิ䛻㓄⨨䛧ゎᯒ䜢⾜䛳䛯䚹䛯䛰䛧䠈⣽⥺໬䛻䜘䜛⁁䛿⤯⦕䛥䜜䛶䛔䜛䛸䛧䛯䚹㻌ບ☢᮲௳䛻䛴䛔䛶䛿ບ☢㏿ᗘ 㻜㻚㻝㻭㻛㼟 䛷 㻞㻡㻟㻚㻣㻝㻣㻭 䜎䛷ບ☢ᚋ䠈㻝 ᫬㛫䝩䞊䝹䝗䛩䜛䜒䛾䛸䛧䛯䚹㻌㻌㻟䠊ゎᯒᡭἲ㻌㐽ⶸ㟁ὶ☢ሙゎᯒ䛻䛿᭷㝈せ⣲ἲ䠄㻲㻱㻹䠅䠈ቃ⏺せ⣲ἲ㻔㻮㻱㻹㻕䠈㧗㏿ከ㔜ᴟᒎ㛤ἲ䠄㻲㻹㻹䠅䜢㐺⏝䛧䛯䠏ḟඖ㠀⥺ᙧ㐣Ώ㟁☢ሙゎᯒᡭἲ䜢⏝䛔䛯䚹䛭䛾㝿䛻⏝䛔䛯ᐃᘧ໬䝰䝕䝹䜢ᘧ㻔㻝㻕䛻♧䛩䚹䛣䜜䛿䝡䜸䞉䝃䝞䞊䝹䛾ἲ๎䠈䝣䜯䝷䝕䞊䛾㟁☢ㄏᑟ䛾ἲ๎䠈䜸䞊䝮䛾ἲ๎䜢ᇶ䛻❧ᘧ䛧䛯䜒䛾䛷䛒䜚䠈㻌ጇᙜᛶ䛜ඛ⾜◊✲䛻䜘䜚☜ㄆ䛥䜜䛶䛔䜛㼇㻟㼉䚹㻌㻲㼕㼓㻚㻞㻌㻲㼕㼑㼘㼐㻌㻵㼚㼔㼛㼙㼛㼓㼑㼚㼑㼕㼠㼥㻌㼒㼛㼞㻌䇾㻺㼛㼞㼙㼍㼘㻌㻹㼛㼐㼑㼘䇿㻘㻌䇾㻿㼏㼞㼕㼎㼕㼚㼓㼋㻯㻝㻌ሼસൈߩሺસܶൈ࢔ሻሽ ή ࢔ ൅㻌㻹㼛㼐㼑㼘䇿㻌㼍㼚㼐㻌䇾㻿㼏㼞㼕㼎㼕㼚㼓㼋㻭㼘㼘㻌㻹㼛㼐㼑㼘䇿㻌ሺસܶ ᇱ ൈ࢔ᇱ ሻൈࡾߤ଴ ݀ ߲
߲࡮௔
㻔㻝㻕㻌
ᇱ
㻌
න
ή
࢔ܵ
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࢔㻌
ܴଷ
߲‫ݐ‬
Ͷߨ ߲‫ ݐ‬ௌ㻌㻌䠘ㅰ㎡䠚㻌㻠䠊ゎᯒ⤖ᯝ㻌ᮏ◊✲䛿䠈᪥ᮏ་⒪◊✲㛤Ⓨᶵᵓ䠄㻭㻹㻱㻰䠅䛾䛂ᮍ᮶་⒪䜢㐽ⶸ㟁ὶ☢ሙ䛜䜒䛯䜙䛩✵㛫☢ሙᆒ୍ᗘ䜈䛾ᙳ㡪䜢ホᐇ⌧䛩䜛་⒪ᶵჾ䞉䝅䝇䝔䝮◊✲㛤Ⓨ஦ᴗ䛄㧗☢ሙ䝁䜲䝹䝅౯䛩䜛䛯䜑䛻䠈ບ☢᏶஢┤ᚋ䛾᧜ീ✵㛫䛻䛚䛡䜛☢ሙᆒ୍䝇䝔䝮䛾◊✲㛤Ⓨ䛅䛃䛾ᡂᯝ䜢ཧ⪃䛻ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌ᗘ䜢ィ⟬䛧䛯⤖ᯝ䜢 㻲㼕㼓㻚㻌㻞 䛻♧䛩䚹㻌㻌ホ౯䝰䝕䝹䛿⣽⥺໬ฎ⌮䜢᪋䛧䛶䛔䛺䛔 㻺㼛㼞㼙㼍㼘 䝰䝕䝹䠈㻌䝁䜲䝹 㻝 䛾⥺ᮦ䛾䜏⣽⥺໬ฎ⌮䜢᪋䛧䛯 㻿㼏㼞㼕㼎㼕㼚㼓㼋㻯㻝 䝰䝕䝹䠈㻌඲䛶䛾䝁䜲䝹䛻⣽⥺໬ฎ⌮䜢᪋䛧䛯 㻿㼏㼞㼕㼎㼕㼚㼓㼋㻭㼘㼘 䝰䝕䝹䛾 㻟ཧ⪃ᩥ⊩㻌䛴䛷⾜䛳䛯䚹㻌㻝㻚㻌 㼀㻚㻌 㼀㼛㼟㼍㼗㼍㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌 㼛㼒㻌 㻯㻿㻶㻌 㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌 㼂㼛㼘㻚㻌 㻥㻞㻌㻲㼕㼓㻚㻌 㻞 䛾 㻞 ḟ䛾㡯䛻╔┠䛩䜛䛸䠈㻺㼛㼞㼙㼍㼘 䝰䝕䝹䛷䛿㻔㻞㻜㻝㻡㻕㻌㻟㻮㻙㼍㻜㻝㻌㻝㻢㻝㼜㼜㼙 䛒䛳䛯☢ሙ୙ᆒ୍ᗘ䛜䠈⣽⥺໬ฎ⌮䛻䜘䜚 㻝㻟㻚㻞㼜㼜㼙㻞㻚㻌 㻭㻚㻌㻹㼛㼏㼔㼕㼐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㻥㻌䜎䛷ᢚ䛘䜙䜜䜛䛸䛔䛖⤖ᯝ䛜ᚓ䜙䜜䛯䚹䛣䜜䛻ᑐ䛧䛶䝁䜲䝹䝅䝇㻔㻞㻜㻝㻠㻕㻌㼜㻚㻢㻢㻌䝔䝮඲య䛾⥺ᮦ䛻⣽⥺໬ฎ⌮䜢᪋䛧䛯䛸䛣䜝䠈㻟㻜㻚㻣㼜㼜㼙 䛸䛔䛖㻟㻚㻌 㻴㻚㻌 㼁㼑㼐㼍㻘㻌 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 㻞㻢㻘㻌⤖ᯝ䛜ᚓ䜙䜜䛯䚹䛣䜜䛿⣽⥺໬ฎ⌮䜢᪋䛩⠊ᅖ䜢㐺ษ䛻㑅㼚㼛㻚㻠㻘㻌㻠㻣㻜㻝㻞㻜㻡㻘㻌㻶㼡㼚㼑㻌㻞㻜㻝㻢㻚㻌― 23 ―

第95回

2017年度秋季低温工学・超電導学会

1B-a05㻹㻾㻵 ⏝㧗

遮蔽電流磁場㻾㻱㻮㻯㻻 䝁䜲䝹䛾㐽ⶸ㟁ὶ☢ሙ䛾ኚືᢚไ䛻᭷ຠ䛺ṧ␃☢໬㻌㻌 㻾㼑㼟㼕㼐㼡㼍㼘㻌㼙㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㼑㼒㼒㼑㼏㼠㼕㼢㼑㻌㼒㼛㼞㻌㼟㼡㼜㼜㼞㼑㼟㼟㼕㼚㼓㻌㼒㼘㼡㼏㼠㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼕㼚㼐㼡㼏㼑㼐㻌㼎㼥㻌㼟㼏㼞㼑㼑㼚㼕㼚㼓㻌㼏㼡㼞㼞㼑㼚㼠㻌㼕㼚㻌㻾㻱㻮㻯㻻㻌㼏㼛㼕㼘㻌㻌ᐑ㷂㻌 ⣧䠈ᐑᇛ㻌 ኱㍜䠈ὠ⏣㻌 ⌮䠄ᮾ໭኱䠅䠗ᶓᒣ㻌 ᙲ୍䠄୕⳻㟁ᶵ䠅㻌㻹㻵㼅㻭㼆㻭㻷㻵㻌㻶㼡㼚䠈㻌 㻹㻵㼅㻭㻳㻵㻌㻰㼍㼕㼟㼡㼗㼑䠈㻌 㼀㻿㼁㻰㻭㻌㻹㼍㼗㼛㼠㼛㻌㻔㼀㼛㼔㼛㼗㼡㻌㼁㼚㼕㼢㻚㻕㻧㻌㼅㻻㻷㻻㼅㻭㻹㻭㻌㻿㼔㼛㼕㼏㼔㼕㻌㻔㻹㼕㼠㼟㼡㼎㼕㼟㼔㼕㻌㻱㼘㼑㼏㼠㼞㼕㼏㻌㻯㼛㼞㼜㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼖㼡㼚㻚㼙㼕㼥㼍㼦㼍㼗㼕㻚㼟㻠㻬㼐㼏㻚㼠㼛㼔㼛㼗㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
䛣䜜䜎䛷䛻䠈REBCO 䝁䜲䝹ෆ䛾ṧ␃☢໬䛜䠈䝁䜲䝹Ⓨ⏕☢
ሙ䛾᫬㛫ⓗᏳᐃᛶ䛻ཬ䜌䛩ᙳ㡪䛻䛴䛔䛶᳨ウ䛧䠈⧞䜚㏉䛧䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ[1]䜢㐺⏝䛩䜛๓䛻䝁䜲䝹䜢ບ☢䛩䜛䛣䛸䛻䜘䜚䠈䝁䜲䝹䛾Ⓨ⏕☢ሙ䛾ኚື䜢ᢚไ䛷䛝䜛ྍ⬟ᛶ䛜䛒䜛䛣䛸䜢☜ㄆ䛧䛶䛔䜛[2]䚹ᮏ◊✲䛷䛿䠈䝁䜲䝹䛾㐠㌿ ᗘ䜔㐠㌿㟁ὶ䜢䝟䝷䝯䞊䝍䛸䛧䛶䠈䝁䜲䝹ບ☢୰䛾☢ሙኚືᢚไ䛻᭷ຠ䛺ṧ␃☢໬䜢ホ౯䛧䠈ṧ␃☢໬䜢฼⏝䛩䜛䛣䛸䛻䜘䜚䠈䝁䜲䝹䛾᭱኱⤒㦂㟁ὶ䜢䛹䛾⛬ᗘపῶ䛷䛝䜛䛛䛻䛴䛔䛶᳨ウ䛧䛯䚹㻌㻌)LJ 6FKHPDWLF view of a GdBCO double pancake coil andKDOOSUREHIRUPDJQHWLFILHOGPHDVXUHPHQW.

㻞䠊ᐇ㦂᪉ἲ㻌
GdBCO 䝔䞊䝥⥺ᮦ䜢⏝䛔䛶 50 䝍䞊䞁䛾䝎䝤䝹䝟䞁䜿䞊䜻䝁䜲䝹䜢స〇䛧䛯䚹䝁䜲䝹᩿㠃䛚䜘䜃☢᮰ᐦᗘ ᐃ⏝䝩䞊䝹⣲Ꮚ䛾タ⨨఩⨨䜢 Fig.1 䛻♧䛩䚹㐠㌿ ᗘ 30, 40, 50K 䛻䛚䛡䜛 䝁 䜲 䝹 䛾 ⮫ ⏺ 㟁 ὶ 䠄 Ic 䠅 䛿 䠈 䛭 䜜 䛮 䜜 340, 260, 190A
㻔ȝ9FP ᇶ‽㻕䛷䛒䜛䚹ᮏᐇ㦂䛻౑⏝䛧䛯䝁䜲䝹ບ☢Ἴᙧ䜢
Fig.2 䛻♧䛩䚹⧞䜚㏉䛧䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ䜢㐺⏝䛩䜛㝿䛾䜸䞊䝞䞊䝅䝳䞊䝖㔞䛿䠈ǻ,㻝 䛜㐠㌿㟁ὶ Ioper 䛾 2%䠈ǻ,㻞 䛜 4%
䛾ᵝ䛻䠈2%䛪䛴ቑຍ䛥䛫䛯䚹䛺䛚䠈䝁䜲䝹ບ☢᫬䛾䝇䜲䞊䝥㏿ᗘ䜢  $V 䛸䛧䠈☢ሙᏳᐃᛶ䛿䠈䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ༳ຍ┤ᚋ䛛䜙 㻝 ศ㛫䛾☢ሙኚື⋡H䛷ホ౯䛧䛯䚹㻌㻟䠊ᐇ㦂⤖ᯝ㻌㐠㌿ ᗘ 30, 40, 50K 䛻䛚䛡䜛㐠㌿㟁ὶ䜢䠈䛭䜜䛮䜜 136,
104, 75A 㻔㟁ὶ㈇Ⲵ⋡ 40%䛷୍ᐃ䠅䠈䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ༳ຍ๓䛾ྎᙧἼ䛾䝢䞊䜽㟁ὶ IKLVWRU\ 䜢䠈䠄a䠅 0 A ཬ䜃䠄b䠅 㐠㌿㟁ὶ㽢1.05 A 䠄䛭䜜䛮䜜 143, 109, 79A䠅䛸䛧䛯ሙྜ䛾䠈ྛ䜸䞊䝞䞊䝅䝳䞊䝖㔞 ǻ, 䛻ᑐ䛩䜛☢ሙኚື⋡H䜢 Fig.3 䛻♧䛩䚹
Fig.3 䜘䜚䠈䠄a䠅 IKLVWRU\ = 0 A ࡢሙྜࡣ㸪ኚືᢚไྍ⬟䛺䜸䞊䝞䞊䝅䝳䞊䝖㔞 ǻ, 䛜䠈㐠㌿ ᗘ 30, 40, 50K 䛻ᑐ䛧䛶䠈䛭䜜䛮䜜⣙ 24, 14, 10A 䛷䛒䛳䛯䛾䛻ᑐ䛧䠈䠄b䠅 IKLVWRU\ = 㐠㌿㟁ὶ㽢1.05A 䛾ሙྜ䛿䠈䛭䜜䛮䜜⣙ 12, 4, 4A 䛷䛒䛳䛯䚹䜎䛯䠈㐠㌿ ᗘ䜢 40K䠈㐠㌿㟁ὶ䜢 52, 104, 156A䠄㟁ὶ㈇Ⲵ⋡ 20,
40 ,60%䠅䠈䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ༳ຍ๓䛾ྎᙧἼ䛾䝢䞊䜽㟁ὶ IKLVWRU\ 䜢䠈䠄a䠅 0A ཬ䜃䠄b䠅 㐠㌿㟁ὶ㽢1.05A䠄䛭䜜䛮䜜 54,
109, 164A䠅䛸䛧䛯ሙྜ䛾䠈ྛ䜸䞊䝞䞊䝅䝳䞊䝖㔞 ǻ, 䛻ᑐ䛩䜛☢ሙኚື⋡H䜢 Fig.4 䛻♧䛩䚹Fig.4 䜘䜚䠈䠄a䠅 IKLVWRU\ = 0A ࡢሙྜࡣ㸪ኚືᢚไྍ⬟䛺䜸䞊䝞䞊䝅䝳䞊䝖㔞 ǻ, 䛜䠈㟁ὶ㈇Ⲵ⋡ 20, 40, 60%䛻ᑐ䛧䛶䠈䛭䜜䛮䜜⣙ 30, 14, 3A㻌 䛷䛒䛳䛯䛾䛻ᑐ䛧䠈䠄b䠅 IKLVWRU\ = 㐠㌿㟁ὶ㽢1.05A 䛾ሙྜ䛿䠈䛭䜜䛮䜜⣙ 9, 4, 2A 䛷䛒䛳䛯䚹䛣䛾ᵝ䛻䠈䛩䜉䛶䛾᮲௳ୗ䛻䛚䛔䛶䠈⧞
䜚㏉䛧䜸䞊䝞䞊䝅䝳䞊䝖Ἴᙧ䜢㐺⏝䛩䜛๓䛻䝁䜲䝹䜢ບ☢䛩䜛䛣䛸䛻䜘䜚䠈䝁䜲䝹Ⓨ⏕☢ሙ䛾ኚືᢚไ䛻᭷ຠ䛺䜸䞊䝞䞊䝅䝳䞊䝖㔞䜢పῶ䛩䜛䛣䛸䛜䛷䛝䛯䚹䜎䛯䠈䝁䜲䝹䛾᭱኱⤒㦂㟁ὶ䜢᭱኱ 21A పῶ䛷䛝䛯䚹௨ୖ䜘䜚䠈䜸䞊䝞䞊䝅䝳䞊䝖ἲ䜢㐺⏝䛩䜛๓䛻㐠㌿㟁ὶ䛾 1.05 ಸ⛬ᗘ䛾㟁ὶ䜢㏻㟁䛩䜛䛣䛸䛻䜘䜚䠈䝁䜲䝹᭱኱⤒㦂㟁ὶ䜢పῶ䛧䠈☢ሙኚື䜢ᢚไ䛷䛝䜛䛣䛸䛜
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ᮏ◊✲䛿䠈ᅜ❧◊✲㛤Ⓨἲே᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ䠄NEDO䠅䛂㧗 ㉸㟁ᑟᐇ⏝໬ಁ㐍ᢏ⾡䠋㧗 ㉸㟁ᑟ㧗Ᏻᐃ☢ሙ䝬䜾䝛䝑䝖䝅䝇䝔䝮ᢏ⾡㛤Ⓨ䠄䝁䜲䝹㛤Ⓨ䠅䛃䛻䜘䜚ጤク䞉ᨭ᥼䜢ཷ䛡ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹㻌Fig.2 &RLOFXUUHQWZDYHIRUP.

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Fig.3 9DULDWLRQ UDWH RI PDJQHWLF IOX[ GHQVLW\ DV IXQFWLRQV of
RYHUVKRRWLQJ FXUUHQW DQG RSHUDWLQJ WHPSHUDWXUH ((a) IKLVWRU\ = 0
A, (b) IKLVWRU\ = Ioper*1.05A).

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Fig.4 9DULDWLRQ UDWH RI PDJQHWLF IOX[ GHQVLW\ DV IXQFWLRQV of
RYHUVKRRWLQJ FXUUHQW DQG FXUUHQW ORDG IDFWRU D  IKLVWRU\ = 0 A,(b) IKLVWRU\ = Ioper*1.05A).
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1. +0LXUDHWDO$EVWUDFWVRI&66-&RQIHUHQFH9RO(2017) p.80.
2. - 0L\D]DNL HW DO $EVWUDFWV RI &66- &RQIHUHQFH
9RO  S― 24 ―

第95回

2017年度秋季低温工学・超電導学会

1B-a06

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94, 132 (2017).
[2] H. Ueda et al., IEEE Trans. Appl. Supercond. 26, 6603205(2015).

― 25 ―

第95回

2017年度秋季低温工学・超電導学会

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遮蔽電流磁場㉸ఏᑟ⥺ᮦ䛷ᕳ䛔䛯ᅇ㌿䜺䞁䝖䝸䞊⏝䝁䝃䜲䞁䝅䞊䝍ᆺ䝬䜾䝛䝑䝖䛾㻌㐽ⶸ㟁ὶ☢⏺ᢚไᡭἲ䛾᳨ウ㻌㻯㼛㼚㼠㼞㼛㼘㻌㼙㼑㼠㼔㼛㼐㻌㼛㼒㻌㼟㼏㼞㼑㼑㼚㼕㼚㼓㻙㼏㼡㼞㼞㼑㼚㼠㻙㼕㼚㼐㼡㼏㼑㼐㻌㼒㼕㼑㼘㼐㻌㼕㼚㻌㼍㻌㼏㼛㼟㼕㼚㼑㻙㼠㼔㼑㼠㼍㻌㼐㼕㼜㼛㼘㼑㻌㼙㼍㼓㼚㼑㼠㻌㼣㼛㼡㼚㼐㻌㼣㼕㼠㼔㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼒㼛㼞㻌㼍㻌㼞㼛㼠㼍㼠㼕㼚㼓㻌㼓㼍㼚㼠㼞㼥㻌㻌᭮ᡃ㒊㻌 ཭㍜䠄ி኱䞉Ꮫ᣺ 㻰㻯䠍䠅㻧㞵ᐑ㻌 ᑦஅ䠄ி኱䠅㻌㻿㻻㻳㻭㻮㻱㻌㼅㼡㼟㼡㼗㼑㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼑㼢㼞㼟㼕㼠㼥㻘㻌㻶㻿㻼㻿㻌㻰㻯㻝㻕㻧㻌 㻭㻹㻱㻹㻵㼅㻭㻌㻺㼍㼛㼥㼡㼗㼕㻌㻔㻷㼥㼛㼠㼛㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼥㻙㼟㼛㼓㼍㼎㼑㻬㼍㼟㼘㻚㼗㼡㼑㼑㻚㼗㼥㼛㼠㼛㻙㼡㻚㼍㼏㻚㼖㼜㻌
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㻔㼎㻕㻌
㻝䠊䛿䛨䜑䛻㻌
ⷧ⭷㧗 ㉸ఏᑟ⥺ᮦ䛷ᕳ䛛䜜䛯䝬䜾䝛䝑䝖䛿䚸㧗☢ሙⓎ⏕䛸ఏᑟ෭༷䛜ྍ⬟䛷䛒䜛䛸䛔䛖Ⅼ䛷䚸ᅇ㌿䜺䞁䝖䝸䞊䛺䛹䛾ຍ㏿ჾ䝅䝇䝔䝮䜈䛾ᛂ⏝䛜ᮇᚅ䛥䜜䛶䛔䜛䚹ᅇ㌿䜺䞁䝖䝸䞊⏝䝬䜾䝛䝑䝖䛻䛿䚸᫬㛫ኚື☢ሙ䜢⢭ᗘⰋ䛟Ⓨ⏕䛩䜛䛣䛸䛜ồ䜑䜙䜜䜛䛜䚸ⷧ⭷⥺ᮦ䛷䛿኱䛝䛺㐽ⶸ㟁ὶ䛜Ⓨ⏕䛩䜛䛯䜑☢ሙ⢭ᗘ䛜஘䛥䜜䜛䚹௒ᅇ䛿䚸㻲㼕㼓㻚㻌 㻝 䛻♧䛩䝁䝃䜲䞁䝅䞊䝍ᆺ䝬䜾䝛䝑䝖䜢ᑐ㇟䛻䚸Ⓨ⏕䛩䜛㐽ⶸ㟁ὶ☢⏺䜢㟁☢⏺ゎᯒ䛻䜘䛳䛶ホ౯䛧䚸䛭䛾ᢚไᡭἲ䜢᳨ウ䛧䛯䚹㻌㻲㼕㼓㻚㻌㻝㻌 㻭㼚㼍㼘㼥㼦㼑㼐㻌㼙㼍㼓㼚㼑㼠㻧㻌㻔㼍㻕㻌㼏㼞㼛㼟㼟㻌㼟㼑㼏㼠㼕㼛㼚㻌㼛㼒㻌㼠㼔㼑㻌㼙㼍㼓㼚㼑㼠㻌㼍㼚㼐㻌㻞䠊୕ḟඖ㟁☢⏺ゎᯒ䝰䝕䝹㻌㼒㼘㼡㼤㻌㼘㼕㼚㼑㼟㻧㻌㻔㼎㻕㻌㼠㼔㼞㼑㼑㻌㼐㼕㼙㼑㼚㼟㼕㼛㼚㼍㼘㻌㼟㼔㼍㼜㼑㻌㼛㼒㻌㼠㼔㼑㻌㼏㼛㼕㼘㻌㼕㼚㻌㼠㼔㼑㻌ゎᯒᑐ㇟䛸䛧䛯䝁䝃䜲䞁䝅䞊䝍ᆺ䝬䜾䝛䝑䝖䛾᩿㠃ᙧ≧䜢㼙㼍㼓㼚㼑㼠㻚㻌
㻲㼕㼓㻚㻌 㻝㻔㼍㻕䛻䚸䝬䜾䝛䝑䝖䜢ᵓᡂ䛩䜛䝁䜲䝹䛾୕ḟඖᙧ≧䜢 㻲㼕㼓㻚㻌㻝㻔㼎㻕䛻♧䛩㼇㻝㼉䚹䛣䛾䝬䜾䝛䝑䝖䛿ᅇ㌿䜺䞁䝖䝸䞊⏝䝬䜾䝛䝑䝖䜢ព㆑䛧䛶タィ䛥䜜䛯䝬䜾䝛䝑䝖䛷䚸ᐃ᱁㐠㌿᮲௳䛿㟁ὶ 㻞㻜㻜㻌㻭䚸᭱኱Ⓨ⏕☢ሙ 㻞㻚㻤㻤㻌 㼀 䛷䛒䜛䚹㕲䝶䞊䜽䛾ᙳ㡪䜢⪃៖䛻ධ䜜䜛䛯䜑䛻䚸㕲䝶䞊䜽䛾እᚄ䛿↓㝈኱䛷䛒䜛䛸௬ᐃ䛧䚸ᙳീ㟁ὶ䜢⏝䛔䛶ィ⟬䛧䛯䚹㕲䛾ẚ㏱☢⋡䛿 㻟㻜㻜㻜 䛷ᅛᐃ䛧䛯㼇㻞㼉䚹䛣䛾᮲௳䛷᭷㝈せ⣲ἲ䛻䜘䜛୕ḟඖ㟁☢⏺ゎᯒ䜢ᐇ᪋䛧䚸㧗㉸ఏᑟ䝁䜲䝹䛻䛚䛡䜛㐽ⶸ㟁ὶ☢⏺䛾᫬㛫Ⓨᒎ䛸䚸䝬䜾䝛䝑䝖┤⥺㒊䛚䜘䜃䝁䜲䝹䜶䞁䝗㒊䛾㐽ⶸ㟁ὶ☢⏺䜈䛾ᐤ୚䜢ホ౯䛧䛯䚹㻌
㻟䠊㐽ⶸ㟁ὶ☢⏺ゎᯒ⤖ᯝ䛸ᢚไᡭἲ䛾᳨ウ㻌㻲㼕㼓㻚㻌 㻞 䛻䝬䜾䝛䝑䝖㏻㟁㟁ὶ䛸㐽ⶸ㟁ὶ☢⏺䛾 㻞 ᴟᡂศ'㻮㻸㻝䚸㻢 ᴟᡂศ'㻮㻸㻟䚸㻝㻜 ᴟᡂศ'㻮㻸㻡 䜢♧䛩䚹ゎᯒ䛾㝿䛻䛿䚸䝬䜾䝛䝑䝖䜢ᵓᡂ䛩䜛ⷧ⭷⥺ᮦୖ䛷䛾☢⏺ศᕸ䛛䜙ィ⟬䛥䜜䜛⮫⏺㟁ὶᐦᗘ䛾᭱ᑠ್䛻䜘䛳䛶ᐃ⩏䛧䛯䝬䜾䝛䝑䝖㈇Ⲵ⋡㻵㼠㻛㻵㼏 䜢 㻡㻡㻑䛚䜘䜃 㻢㻢㻑䛸䛺䜛䜘䛖䛻䚸㉸ఏᑟ≉ᛶ䛾䝟䝷䝯䞊䝍䜢ኚ᭦䛧䛯䚹䛣䛾⤖ᯝ䛛䜙䚸䝬䜾䝛䝑䝖㈇Ⲵ⋡䛜㧗䛔᪉䛜䚸㏻㟁
㟁ὶኚ໬䛻క䛖㐽ⶸ㟁ὶ☢⏺䛾ከᴟᡂศ䛾ኚ໬䛜ᑠ䛥䛔䛣䛸䛜䜟䛛䛳䛯䚹䛣䜜䛿䚸䝬䜾䝛䝑䝖㈇Ⲵ⋡䛜㧗䛔䜋䛹⥺ᮦෆ䛻ㄏᑟ䛥䜜䜛㐽ⶸ㟁ὶ䛜ᑠ䛥䛟䛺䜛䛣䛸䛻㉳ᅉ䛧䛶䛔䜛䚹㻌௒ᅇゎᯒᑐ㇟䛸䛧䛯䝬䜾䝛䝑䝖䛿ᅇ㌿䜺䞁䝖䝸䞊⏝ 㻞 ᴟ䝬䜾䝛䝑䝖䛷䛒䜚䚸㏻㟁㟁ὶไᚚ䛻䜘䛳䛶䝬䜾䝛䝑䝖䛾Ⓨ⏕ 㻞 ᴟ☢
⏺䜢┤᥋ไᚚ䛩䜛䚹䛩䛺䜟䛱䚸஦๓䛻㐽ⶸ㟁ὶ☢⏺䛾 㻞 ᴟ☢
⏺ᡂศ䜢ண 䛩䜜䜀䚸䛭䜜䜢ᡴ䛱ᾘ䛩䜘䛖䛻㏻㟁㟁ὶ䜢ᚤᑠไᚚ䛩䜛䛣䛸䛻䜘䜚䚸㐽ⶸ㟁ὶ☢⏺䛾 㻞 ᴟᡂศ䜢ᡴ䛱ᾘ䛩䛣䛸䛜ྍ⬟䛸䛺䜛䚹䜎䛯䚸㻝㻜 ᴟᡂศ௨ୖ䛿䚸ᅇ㌿䜺䞁䝖䝸䞊⏝䝬䜾䝛䝑䝖䛻䛚䛔䛶䛿༑ศᑠ䛥䛔䜒䛾䛷䛒䜚䚸ᐇ㝿䛾㐠㌿䛷䛿↓ど䛷䛝䜛⛬ᗘ䛷䛒䜛䚹㻌୍᪉䚸㻢 ᴟᡂศ䛿↓ど䛷䛝䛺䛔⛬ᗘ䛷䛒䜚䚸䛛䛴㏻㟁㟁ὶไᚚ䛷䛿ᢚไ䛷䛝䛺䛔䛯䜑䚸㻢 ᴟᡂศ䛾ᢚไ䛻䛿䚸䝬䜾䝛䝑䝖䛾 㻟 ḟඖᙧ≧䜢ኚ᭦䛩䜛䛣䛸䛷ᑐᛂ䛩䜛ᚲせ䛜䛒䜛䚹䛩䛺䜟䛱䚸┤⥺㒊᩿㠃䛻䛚䛡䜛⥺ᮦ㓄⨨䛾ኚ᭦䚸┤⥺㒊㛗䛥䛾ቑຍ䛺䛹䛻䜘䜛ᑐ⟇䛜ᚲせ䛷䛒䜛䚹㻌䛣䛾⤖ᯝ䛷♧䛧䛯䜘䛖䛻䚸㟁☢⏺ゎᯒ䛻䜘䛳䛶ᅇ㌿䜺䞁䝖䝸䞊⏝䝬䜾䝛䝑䝖䛻䛚䛡䜛㐽ⶸ㟁ὶ☢⏺䛜ホ౯ྍ⬟䛻䛺䛳䛯䚹ຍ㏿ჾ⏝䝬䜾䝛䝑䝖䛾ᙧ≧䞉㐠㌿᮲௳䚸౑⏝⥺ᮦ䛾㉸ఏᑟ≉ᛶ䛜᫂䜙䛛䛻䛺䛳䛶䛔䜜䜀䚸㟁☢⏺ゎᯒ䛻䜘䜚㐽ⶸ㟁ὶ☢⏺
䜢ண 䛷䛝䜛䚹㻌
㻌㻌㻲㼕㼓㻚㻌㻞㻌 㻯㼡㼞㼞㼑㼚㼠㻌 㼜㼞㼛㼒㼕㼘㼑㻌 㼍㼚㼐㻌 㼠㼕㼙㼑㻌 㼑㼢㼛㼘㼡㼠㼕㼛㼚㼟㻌 㼛㼒㻌 㼐㼕㼜㼛㼘㼑㻘㻌㼟㼑㼤㼠㼡㼜㼛㼘㼑㻘㻌㼍㼚㼐㻌㼐㼑㼏㼍㼜㼛㼘㼑㻌㼏㼛㼙㼜㼛㼚㼑㼚㼠㼟㻌㼛㼒㻌㼟㼏㼞㼑㼑㼚㼕㼚㼓㻙㼏㼡㼞㼞㼑㼚㼠㻙㼕㼚㼐㼡㼏㼑㼐㻌 㼒㼕㼑㼘㼐㻌 㼡㼚㼐㼑㼞㻌 㼐㼕㼒㼒㼑㼞㼑㼚㼠㻌 㼘㼛㼍㼐㻌㼞㼍㼠㼕㼛㻚㻌ㅰ㎡㻌ᮏ◊✲䛾୍㒊䛿⛉Ꮫᢏ⾡᣺⯆ᶵᵓ䛾◊✲ᡂᯝᒎ㛤஦ᴗ䛂ᡓ␎ⓗ䜲䝜䝧䞊䝅䝵䞁๰ฟ᥎㐍䝥䝻䜾䝷䝮䠄㻿㻙䜲䝜䝧䠅䛃䛾ᨭ᥼䛻䜘䛳䛶䚸୍㒊䛿⛉◊㈝≉ู◊✲ဨዡບ㈝䠄㻝㻢㻶㻜㻣㻣㻥㻥䠅䛾ᨭ᥼䛻䜘䛳䛶⾜䜟䜜䛯䚹㻌ཧ⪃ᩥ⊩㻌㻢㻣㻌㻔㻞㻜㻝㻡㻕㻌㼜㻚㻌㻣㻣㻢㻙㻤㻜㻌㻝㻚㻌 㻺㻚㻌㻭㼙㼑㼙㼕㼥㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㻚㻌㻼㼞㼛㼏㼑㼐㼕㼍㻘㻌㻢㻞㻚㻌 㼅㻚㻌 㻿㼛㼓㼍㼎㼑㻘㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㼟㼡㼎㼙㼕㼠㼠㼑㼐㻌 㼠㼛㻌 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― 26 ―

第95回

2017年度秋季低温工学・超電導学会

1B-a08

磁場応用☢Ẽศ㞳䜢⏝䛔䛯㝖ཤᅵተ䛾ῶᐜ໬䞉෌⏕฼⏝䛻㛵䛩䜛◊✲㻌㻌䡚๓ฎ⌮䛸䛧䛶䛾ᅵተศᩓ䛸㧗ᗘศ⣭䡚㻌㻿㼠㼡㼐㼥㻌㼛㼚㻌㼂㼛㼘㼡㼙㼑㻌㻾㼑㼐㼡㼏㼠㼕㼛㼚㻌㼍㼚㼐㻌㻾㼑㼏㼥㼏㼘㼕㼚㼓㻌㼛㼒㻌㻾㼑㼙㼛㼢㼑㼐㻌㻿㼛㼕㼘㻌㼎㼥㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㻿㼑㼜㼍㼞㼍㼠㼕㼛㼚㻌䡚㻿㼛㼕㼘㻌㻰㼕㼟㼜㼑㼞㼟㼕㼛㼚㻌㼍㼚㼐㻌㻭㼐㼢㼍㼚㼏㼑㼐㻌㻯㼘㼍㼟㼟㼕㼒㼕㼏㼍㼠㼕㼛㼚㻌㼍㼟㻌㼠㼔㼑㻌㻼㼞㼑㼠㼞㼑㼍㼠㼙㼑㼚㼠䡚㻌㻌ᶫᮏ㻌 㝧௓䠈⛅ᒣ㻌 ᗤᏊ䠄㜰኱䠅䠗すᔱ㻌 ⱱᏹ䠄⚟஭ᕤ኱䠅㻌㻴㻭㻿㻴㻵㻹㻻㼀㻻㻌㼅㼛㼟㼡㼗㼑䠈㻌 㻭㻷㻵㼅㻭㻹㻭㻌㼅㼛㼗㼛㻌㻔㻻㼟㼍㼗㼍㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻕㻧㻌㻺㻵㻿㻴㻵㻶㻵㻹㻭㻌㻿㼔㼕㼓㼑㼔㼕㼞㼛㻌㻔㻴㼡㼗㼡㼕㻌㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻌㼛㼒㻌㼀㼑㼏㼔㼚㼛㼘㼛㼓㼥㻕㻌 㻌㻱㻙㼙㼍㼕㼘㻦㻌㼔㼍㼟㼔㼕㼙㼛㼠㼛㻬㼝㼎㻚㼟㼑㼑㻚㼑㼚㼓㻚㼛㼟㼍㼗㼍㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌䛸෇ᰕᆺ䛾Ὲử⟶䛜⏝䛔䜙䜜䜛䚹෇㗹ᆺῈử⟶䛿䚸㏫෇㗹ᆺ㻝䠊䛿䛨䜑䛻㻌
䛾⿦⨨ୗ㒊䛛䜙ᠱ⃮ᾮ䜢ὶධ䛥䛫䚸ᠱ⃮ᾮ䛜ୖ᪼䛩䜛䛻䛴⚟ᓥ➨୍ཎᏊຊⓎ㟁ᡤ஦ᨾ䛻క䛔Ⓨ⏕䛧䛯㝖ཤᅵተ䛾䜜䛶⿦⨨䛾ෆᚄ䛜ᗈ䛜䜛䛣䛸䛷ὶ㏿䜢పୗ䛥䛫䚸⢏Ꮚ䛾⢏ᚄῶᐜ໬ᡭἲ䛜ồ䜑䜙䜜䛶䛔䜛䚹ᮏ◊✲䛷䛿䚸㎰ᆅᅵተ䛻ከ䛟䛻䜘䜛ศ㞳䜢⾜䛖䚹䛣䛾⿦⨨䛷䛿䚸ୖ㒊䛻⾜䛟䛻䛴䜜䛶ෆᚄ䛜ྵ䜎䜜䜛⢏ᚄ 㻣㻡㻌 㽀㼙 ௨ୗ䛾䝅䝹䝖䞉⢓ᅵศ䛻ᑐ䛩䜛㧗໙㓄☢
኱䛝䛟䛺䜛䛯䜑䚸䝔䞊䝟䞊ゅ䛜኱䛝䛔䜋䛹䚸ศ㞳୰䛻⟶ෆ䛷Ẽศ㞳䠄㻴㻳㻹㻿䠅䜢᳨ウ䛧䛶䛔䜛䚹㻲㼕㼓㻚㻝 䛻ᮏ◊✲䛷᳨ウ䛧䛶୙ᆒ୍䛺ὶ䜜䛜Ⓨ⏕䛧䜔䛩䛟䛺䜛ྍ⬟ᛶ䛜䛒䜛䚹୍᪉䛷䚸෇䛔䜛㝖ཤᅵተฎ⌮䝣䝻䞊䜢♧䛩䚹䜎䛪㝖ཤᅵተ䜢‵ᘧศ⣭䛧䚸ᰕᆺῈử⟶䛿䝔䞊䝟䞊ゅ䛜 㻜㼻䛷䛒䜚䚸㧗䛥䛻䜘䜙䛪ෆᚄ䛿෌฼⏝ᇶ‽್௨ୗ䛾ᨺᑕ⬟⃰ᗘ䛻䛺䛳䛯⢏ᚄ 㻣㻡㻌㽀㼙 ௨ୖ䛾୍ᐃ䛷䛒䜛䛯䜑䚸ศ㞳୰䛾⟶ෆ䛿ᒙὶ䛻㏆䛟䛺䜛䛸⪃䛘䜙䜜◁♟ศ䜢෌฼⏝䛩䜛䚹ḟ䛻䚸⢏ᚄ 㻣㻡㻌 㽀㼙 ᮍ‶䛾䝅䝹䝖䞉⢓ᅵ䜛䛜䚸ᅛᐃ䛧䛯⢏ᚄ䛾ศ㞳䛧䛛ᐇ⌧䛷䛝䛺䛔䚹䛭䛣䛷ᮏ◊✲ศ䛻ᑐ䛧䛶☢Ẽศ㞳䜢⾜䛔䚸㻯㼟 䜢ᙉᅛ䛻྾╔䛩䜛䛯䜑ᨺᑕ䛷䛿෇㗹ᆺ䛸෇ᰕᆺῈử⟶䛾ศ㞳ᛶ⬟䛾ẚ㍑䜢⾜䛳䛯䚹㻌⬟⃰ᗘ䛜㧗䛔ᖖ☢ᛶ䛾 㻞䠖㻝 ᆺ⢓ᅵ㖔≀䛾䜏䜢㑅ᢥⓗ䛻ᤕᤊ䛧䚸㻯㼟 ྾╔⬟䛜ప䛔䛯䜑ᨺᑕ⬟⃰ᗘ䛜ప䛔཯☢ᛶ䛾 㻝㻦㻝 ᆺ䛣䛣䛷䛿䚸෇㗹ᆺ䚸෇ᰕᆺ䛸䜒䛻᤼ฟཱྀ䛾㧗䛥䜢 㻤㻜㻜㻌 㼙㼙䚸䛭䛾㧗䛥䛷䛾᩿㠃✚䜢 㻞㻤㻌 㼏㼙㻞 䛻⤫୍䛧䚸㻣㻡㻌 㽀㼙 ᮍ‶䛾䝞䞊䝭⢓ᅵ㖔≀䜔▼ⱥ䚸㛗▼䛺䛹䜢෌฼⏝ᑐ㇟䛻䛩䜛䚹䛧䛛䛧䚸䝅䝹䝖䞉⢓ᅵศ䛾୰䛻䛿ᩘ 㽀㼙 ௨ୗ䛾ᚤ⢏Ꮚ䛜Ꮡᅾ䛧䚸ᑠ⢏ᚄ䜻䝳䝷䜲䝖⢏Ꮚ䜢⏝䛔䛶䚸ὶ㔞䜢タᐃ䛧䛯䚹ᠱ⃮ᾮ䛾ᅛᾮẚ䜢䛻䛺䜛䜋䛹 㻞㻦㻝 ᆺ⢓ᅵ㖔≀䛿☢Ẽศ㞳䛻䜘䜛ᤕᤊ䛜ᅔ㞴䛷䛒㻝䠖㻝㻜㻜 䛻⤫୍䛧䚸ᠱ⃮ᾮ䜢 㻝㻜 ศ㛫ᚠ⎔䛥䛫䛯䛒䛸䚸ᠱ⃮ᾮ䛸ྠ㔞䛾⵨␃Ỉ䜢㏻㐣䛥䛫䛯䚹ศ㞳ᐇ㦂ᚋ䚸ᮍฎ⌮䛾ᠱ⃮ᾮ䚸䜛䚹䛣䛾䛣䛸䛜☢Ẽຊ䛻䜘䜛ຠᯝⓗ䛺⃰ᗘపῶ䜢ጉ䛢䜛䛸䛔䛖Ὲử⟶ෆ䜈䛾ṧ␃ศ䛸Ὲử⟶㏻㐣ศ䛾⢏ᗘศᕸ䜢 ᐃ䛧ၥ㢟䛜䛒䜛䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸☢Ẽศ㞳䛾ຠᯝ䜢䜘䜚㧗䜑䛯䚹㻌䜛䛯䜑䛾๓ฎ⌮䛸䛧䛶䚸Ὲử⟶䜢⏝䛔䛯㧗ᗘศ⣭ฎ⌮䜢᳨ウ㻌䛧䛯䚹㻌㻟䠊⤖ᯝ䛸⪃ᐹ㻌⢏Ꮚ䛻స⏝䛩䜛☢Ẽຊ䛸䝗䝷䝑䜾ຊ䛻ᇶ䛵䛟ᴫ⟬䛻䜘䜚䚸⌧㻲㼕㼓㻚㻞㻘㻟 䛻෇㗹ᆺ䚸෇ᰕᆺῈử⟶䛾ศ㞳ᐇ㦂䛾⤖ᯝ䜢♧ᆅ䛷ᐇ㝿䛻ᅵተศ㞳䜢⾜䛖䛣䛸䜢᝿ᐃ䛧䚸ᐇ㦂᮲௳䜢༳ຍ☢
䛩䚹⦪㍈䛿䚸ศ㞳๓䛾䝞䞊䝭䜻䝳䝷䜲䝖඲య䛾㔜㔞䜢 㻝㻜㻜䠂䛸ሙ 㻡㻌 㼀䚸ᠱ⃮ᾮ䛾ὶ㏿ 㻟㻌 㼏㼙㻛㼟䚸䝣䜱䝹䝍䞊䝽䜲䝲䞊ᚄ 㻡㻜㻜㻌 㽀㼙䛧䛯䛸䛝䛾ᠱ⃮ᾮෆ䛾䝞䞊䝭䜻䝳䝷䜲䝖䛾㉁㔞ศ⋡䜢♧䛧䚸ᶓ䛸䛩䜛䛸䚸⣙ 㻞㻌 㽀㼙 ᮍ‶䛾 㻞㻦㻝 ᆺ⢓ᅵ㖔≀㻔☢໬⋡ 㻢㻚㻜㽢㻝㻜㻙㻠㻕㍈䛿⢏ᚄ䜢ᑐᩘ⾲♧䛻䛧䛯䜒䛾䜢♧䛩䚹Ὲử⟶䛻ṧ䛳䛯⢏Ꮚ䛜ᤕᤊ䛷䛝䛺䛔䛸䛔䛖⤖ᯝ䛻䛺䛳䛯䚹䛭䛣䛷䚸Ὲử⟶䜢⏝䛔䛯䜢኱⢏ᚄศ䠄㻸㼍㼞㼓㼑㻌 㻲㼞㼍㼏㼠㼕㼛㼚䠅䚸Ὲử⟶䜘䜚᤼ฟ䛥䜜䛯⢏Ꮚ䜢㧗ᗘศ⣭䛷䛿䚸☢Ẽຊ䛻䜘䜛ศ㞳䛾ୗ㝈䛸䛺䜛⢏ᚄ䠄ୖグ᮲ᑠ⢏ᚄศ䠄㻿㼙㼍㼘㼘㻌㻲㼞㼍㼏㼠㼕㼛㼚䠅䛸䛧䛯䚹㻌௳䛷䛿 㻞㻌㽀㼙䠅䜢ศ⣭Ⅼ䛻タᐃ䛧䛶䚸䛒䜙䛛䛨䜑ศ㞳䛧䚸☢Ẽศ෇㗹ᆺ䛷䛿䚸ᑠ⢏ᚄศ୰䛻䚸኱⢏ᚄศ䜈䛸ศ㞳䛥䜜䜛䜉㞳ᛶ⬟䜢ྥୖ䛥䛫䜛䛣䛸䜢┠ⓗ䛸䛩䜛䚹㻌 㻌䛝 㻟㻜㻌 㽀㼙 ௨ୖ䛾⢏Ꮚ䛜ΰධ䛧䛶䛔䜛䚹୍᪉䚸෇ᰕᆺ䛷䛿䚸኱௒ᅇ䛾ᐇ㦂䛷䛿䚸⢏ᗘศᕸ䛾ኚ໬䜢ほᐹ䛧䜔䛩䛟䛩䜛䛯䜑⢏ᚄศ୰䛻䚸ᑠ⢏ᚄศ䜈䛸ศ㞳䛥䜜䜛䜉䛝 㻟㻜㻌㽀㼙 ᮍ‶䛾⢏Ꮚ䛻䚸ศ⣭Ⅼ䜢 㻞㻌㽀㼙㻌 䜘䜚䜒኱䛝䛔 㻟㻜㻌㽀㼙 䛸䛧䛶䚸ศ⣭Ⅼ䜢ቃ䛻䛧䛜ΰධ䛧䛶䛔䜛䚹䛣䜜䜙䛾⢏Ꮚ䛾ΰධ䛿䚸㝖ཤᅵተ䛾ῶᐜ⋡䛯Ὲử⟶䛻䜘䜛ᠱ⃮⢏Ꮚ䛾ศ㞳ᐇ㦂䜢⾜䛖䚹㻌䛾పୗ䜔☢Ẽศ㞳䛻䜘䜛ᨺᑕ⬟⃰ᗘపῶຠᯝ䛾పୗ䛻䛴䛺㻌䛜䜛ཎᅉ䛸䛺䜛䛯䜑䚸௒ᚋ䛾⿦⨨䛾ᨵⰋ䜔ᅛᾮẚ䞉ὶ㔞䛺䛹㻌䛾ศ㞳᮲௳䛾᳨ウ䛻䜘䜚ศ㞳ᛶ⬟䜢㧗䜑䜛䛣䛸䛜ᚲせ䛷䛒䜛㻌䛸⪃䛘䜙䜜䜛䚹㻌
㻌
㻌
㻌
㻌
㻌
㻌
㻌
Fig.11 Treatment
T t
t Flow
Fl off R
RemoveddS
Soil
il iin thi
this studyt d㻌㻞䠊ᐇ㦂᪉ἲ㻌☢Ẽຊ䛷䛿ศ㞳䛜㞴䛧䛔㝖ཤᅵተ୰䛾ᚤ⢏Ꮚ䜢☢Ẽศ㞳๓䛻ศู䛩䜛䛯䜑䚸㻞 ✀㢮䛾Ὲử⟶⿦⨨䜢స〇䛧䚸䝰䝕䝹ᐇ㦂䛸䛧䛶 㻞㻦㻝 ᆺ⢓ᅵ㖔≀䛾䝞䞊䝭䜻䝳䝷䜲䝖ᠱ⃮ᾮ䜢ᑐ㇟䛸䛧䛯ศ㞳ᛶ⬟䛾ẚ㍑䜢⾜䛳䛯䚹Ὲử⟶䛸䛿䚸⟶ෆ䛾ὶయ䛾㏿ᗘ䛸䚸ᠱ⃮⢏Ꮚ䛾⢏ᚄ䞉ᙧ≧䞉ẚ㔜䛻౫Ꮡ䛩䜛䚸䝗䝷䝑䜾ຊ䞉ᾋຊ䞉㔜ຊ䛾㔮䜚ྜ䛔䛻䜘䛳䛶䚸⢏Ꮚ䛾ΰྜ≀䛛䜙⢏Ꮚ䜢㑅ู䛩䜛䛯䜑䛻⏝䛔䜙䜜䜛⟶䛾䛣䛸䛷䛒䜛䚹タഛ䛾ྍື㒊䛜ᑡ䛺䛟䚸䝯䞁䝔䝘䞁䝇䛜ᐜ᫆䛷䛒䜛䛸䛔䛖฼Ⅼ䜢ᣢ䛱䚸୍⯡ⓗ䛻෇㗹ᆺ― 27 ―

Fig.2 Classification with Cone type Device

Fig.3 Classification with Column type Device
第95回

2017年度秋季低温工学・超電導学会

1B-a09㧗

磁場応用㉸ఏᑟࢥ࢖ࣝࢆ⏝࠸ࡓㄏᑟຍ⇕࡟ࡼࡿ࢔࣑ࣝ⁐ゎᐇド⿦⨨ࡢ㛤Ⓨ
Development of Test Device for Aluminum Metal Melting by Electromagnetic
Induction Heating Using HTS Coils⚟஭⪽㸪ᑠ㔝⛸ᖹ㸪ᑠᕝ⣧㸪బ⸨Ꮥ㞝㸦᪂₲኱㸧Ώ㒊ᬛ๎㸪㛗ᒇ㔜ኵ㸪ᖹ㔝┤ᶞ㸦୰㒊㟁ຊ㸧ྂ℩඘✑㸦⏘⥲◊㸧FUKUI Satoshi, ONO Ryohei, OGAWA Jun, SATO Takao (Niigata University) ;WATANABE Tomonori, NAGAYA Shigeo, HIRANO Naoki (Chubu Electric Power Co. Inc.); FURUSE Mitsuho (AIST)
E-mail: fukui@eng.niigata-u.ac.jp㻌㻝䠊䛿䛨䜑䛻㻌
⌧ᅾ㸪࢔࣑ࣝᮦᩱࡢ⁐ゎ᪉ἲ࡜ࡋ࡚ࡣ࢞ࢫຍ⇕ࡀ୺ὶ࡛࠶ࡿࡀ㸪୺࡟ᮦᩱ⾲㠃࠿ࡽࡢຍ⇕࡜࡞ࡿࡓࡵ㸪ᮦᩱෆ㒊ࡢ ᗘୖ᪼ࡀ㐜ࡃ㸪㧗㏿⁐ゎࡣᅔ㞴࡛࠶ࡿࠋᮏ◊✲࡛ࡣ㸪㧗 ㉸ఏᑟࢥ࢖ࣝ࡟ࡼࡿ㟼Ṇᙉ☢ሙ୰࡛㸪࢔࣑ࣝᮦᩱࢆᅇ㌿ࡉࡏ࡚ㄏᑟຍ⇕ࡋ㸪㧗㏿⁐ゎࡍࡿ⿦⨨ࢆᥦ᱌ࡋ࡚࠸
ࡿ㸦Fig. 1㸧
ࠋHTSࢥ࢖ࣝ࡟ࡼࡿ㧗☢⏺ࢆ⏝࠸ࡿࡇ࡜࡟ࡼࡾ㸪ᚑ᮶ࡢ࢞ࢫຍ⇕࡛ࡣ୙ྍ⬟࡛࠶ࡗࡓ㸪㧗㏿࣭㧗ຠ⋡ຍ⇕ࡀᐇ⌧࡛ࡁࡿࠋᮏᥦ᱌ࡢ㧗㏿࢔࣑ࣝ⁐ゎᢏ⾡ࡀᐇ⌧ࡍࢀࡤ㸪ࢲ࢖࢝ࢫࢺᕤ⛬ࢆࢪࣕࢫࢺ࢖ࣥࢱ࢖࣒᪉ᘧ࡟ኚ᭦ࡍ
ࡿࡇ࡜ࡀྍ⬟࡜࡞ࡾ㸪ᚑ᮶ࡢၥ㢟Ⅼ࡛࠶ࡿ࢔࣑ࣝ⁐‫ࡢ‮‬ᶓᣢ㐠ᦙࡢ஦ᨾࣜࢫࢡ㸪ಖᣢ⅔࡛ࡢ࢚ࢿࣝࢠ࣮ࣟࢫࡸ
ᗘపୗ࡟ഛ࠼ࡓ㐣๫ຍ⇕࡟ࡼࡿࢻࣟࢫ➼ࡢၥ㢟ࢆゎỴ࡛ࡁࡿࠋᮏⓎ⾲࡛ࡣ㸪ᩘ್ゎᯒ࡟ࡼࡿᐇド⿦⨨ࡢタィ࡜㸪ࡑࢀ࡟ᇶ࡙ࡃᐇド⿦⨨ࡢ㛤Ⓨ≧ἣ࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋ
Fig. 1 Aluminum metal melting device by induction heating
㻌using HTS coils㻞䠊ᐇド⿦⨨䛾㟁☢タィ㻌ᮏ◊✲࡛᝿ᐃࡋ࡚࠸ࡿᐇ⏝⿦⨨ࡢᛶ⬟ࡣ㸪1 ಶ 5 kg ࡢ࢔࣑ࣝࢽ࣒࢘࢖ࣥࢦࢵࢺ 5 ಶࢆ㧗㏿⁐ゎྍ⬟࡞ຍ⇕ᛶ⬟ࢆ᭷ࡍࡿࡶࡢ࡛࠶ࡿࠋᶆ‽ⓗ࡞࢔࣑ࣝࢽ࣒࢘࢖ࣥࢦࢵࢺࡢ
ࢧ࢖ࢬࡣ 108 mm×34 mm×504 mm ࡛࠶ࡿࡢ࡛㸪ࡇࢀࡽࢆᅇ㌿ࡉࡏࡿ✵㛫ࡢ኱ࡁࡉࡣᴫࡡỴࡲࡗ࡚ࡃࡿࠋࡲࡓ㸪ཎ⌮᳨ドணഛヨ㦂ࡢ⤖ᯝ[1]࠿ࡽ㸪ᚲせ࡞☢⏺ᙉᗘࡣᴫࡡ 0.6
㹼1T ࡜ࡍࡿࠋࡇࢀࡽ࡟ຍ࠼࡚ᐇド⿦⨨〇స࡟࠶ࡓࡗ࡚ࡢ
Fig. 2. Arrangement of aluminum ingots and HTS coils, andධᡭྍ⬟࡞⥺ᮦ㔞ࡢไ⣙➼࠿ࡽ㸪HTS ࢥ࢖ࣝࡢࢧ࢖ࢬࡶ
dimension of cross-section.
ᴫࡡỴࡲࡿࠋFig. 2 ࡟ᐇド⿦⨨࡟࠾ࡅࡿ࢔࣑ࣝᮦᩱ࡜࣍ࣝ
ࢲ࣮ཬࡧ HTS ࢥ࢖ࣝࡢᗄఱᏛⓗ㓄⨨ཬࡧ᩿㠃ᑍἲࢆ♧ࡍࠋ
5 ゅᙧ࡟㓄⨨ࡋࡓ࣍ࣝࢲ࣮࡟࢔࣑ࣝᮦᩱࡀධࡗ࡚࠾ࡾ㸪㛗᪉ᙧᆺࡢ HTS ࢥ࢖ࣝ࡟ࡼࡿࢲ࢖࣏࣮ࣝ☢ሙ୰࡛ᅇ㌿ࡍࡿᵓ㐀࡟࡞ࡗ࡚࠸ࡿࠋᮏᵓ㐀࡟ᇶ࡙࠸࡚ FEM ゎᯒ࡟ࡼࡾ㸪ᐇド⿦⨨ࡢᡂ❧ᛶࢆ᳨ドࡍࡿࠋࡲࡎ㸪3 ḟඖ FEM ゎᯒ࡟ࡼࡾᚓࡽࢀࡓ⿦⨨᩿㠃ෆࡢ☢⏺ศᕸ㸦(x, y) = (90 mm, 0mm)ཬࡧ(x, y) = (134 mm, 0 mm) ࡟࠾ࡅࡿ x ᪉ྥ☢⏺ࡢศᕸ㸧ࢆ Fig. 3 ࡟♧ࡍࠋᮏゎᯒ࡛ࡣ㸪ࢥ࢖᩿ࣝ㠃ෆࡢᖹᆒ㟁ὶᐦᗘࢆ 150 A/mm2 ࡜ࡋ࡚࠸ࡿࠋFig. 3 ࡼࡾ㸪࢔࣑ࣝ࢖ࣥ
ࢦࢵࢺࡢ z ᪉ྥ㛗ࡉࡢ⠊ᅖ࡛࠶ࡿ z = ±50 mm ࡛ᴫࡡ 0.62
㹼1.24T ࡢ☢⏺ࢆⓎ⏕࡛ࡁࡿࡇ࡜ࡀศ࠿ࡿࠋᚑࡗ࡚㸪ணഛ
Fig. 3. Magnetic field distribution in around aluminum ingots.
ヨ㦂[1] ࡢ⤖ᯝ࠿ࡽุ᩿ࡉࢀࡿᚲせ࡞☢⏺ᙉᗘࡣ☜ಖ࡛ࡁࡿ࡜⪃࠼ࡽࢀࡿࠋ㟁☢⏺㸫⇕㐃ᡂゎᯒ࡟ࡼࡾ㸪ᐇド⿦⨨ࡢຍ⇕≉ᛶࢆ᳨ドࡋࡓࠋ࢔࣑ࣝᮦᩱࡢ ᗘศᕸࡢኚ໬㸪࢔࣑ࣝᮦᩱࡢຍ⇕࡟౑⏝ࡉࢀࡿ⇕㔞ࢆㄪ࡭ࡿࡓࡵ㸪࣍ࣝࢲ࣮ࡀ࠶ࡿሙྜ࡜↓࠸ሙྜ࡟࠾࠸࡚࢔࣑ࣝᮦᩱࡢ ᗘୖ᪼ࢆホ౯ࡋࡓࠋFig. 4 ࡟♧ࡍゎᯒ⤖ᯝࡼࡾ㸪࣍ࣝࢲ࣮ࡢ᭷
↓࡟ࡼࡿ᭱኱ ᗘ㸪᭱ᑠ ᗘࡢᕪࡣࡑࢀࡒࢀ 6.01Υ㸪
59.07Υ㸦ᅇ㌿㛤ጞ࠿ࡽ 10 ⛊ᚋ㸧࡜࡞ࡾ㸪⥲Ⓨ⇕㔞 59.6kWࡢෆ㸪࣍ࣝࢲ࣮࡟ዣࢃࢀࡿ⇕㔞ࡀ 4.7kW ࡛࠶ࡿࡇ࡜ࡀࢃ
࠿ࡾ㸪 92%௨ୖࡀ࢔࣑ࣝᮦᩱࡢຍ⇕࡟ྥࡅࡽࢀࡿࡇ࡜ࢆ
☜ㄆࡋࡓࠋᐇド⿦⨨ࡢ〇స≧ἣࡣᙜ᪥ሗ࿌ࡍࡿࠋཧ⪃ᩥ⊩[1] T. Watanabe, S. Nagaya, N. Hirano, S. Fukui, IEEE Trans. Appl.
Supercond., vol.26, Art. ID 3700504, 2016.

Fig. 4. Time evolution of maximum and minimum temperatures ofaluminum material. (1200 rpm)

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第95回

2017年度秋季低温工学・超電導学会

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Y 系線材特性㠡ᆺ䝢䝑䜽䜰䝑䝥䝁䜲䝹ἲ䛻䜘䜛䝬䝹䝏䝣䜱䝷䝯䞁䝖 㻾㻱㻮㻯㻻 ㉸ఏᑟ䝔䞊䝥⥺ᮦ䛾㻌஺ὶᦆኻ䛾እ㒊☢ሙ༳ຍゅᗘ౫Ꮡᛶ䛾ホ౯㻌㻵㼚㼢㼑㼟㼠㼕㼓㼍㼠㼕㼛㼚㻌㼛㼒㻌㻱㼤㼠㼑㼞㼚㼍㼘㻌㻲㼕㼑㼘㼐㻌㻭㼚㼓㼡㼘㼍㼞㻌㻰㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻭㻯㻌㻸㼛㼟㼟㻌㼛㼒㻌㻹㼡㼘㼠㼕㼒㼕㼘㼍㼙㼑㼚㼠㼍㼞㼥㻌㻾㻱㻮㻯㻻㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼀㼍㼜㼑㼟㻌㼎㼥㻌㼁㼟㼕㼚㼓㻌㻿㼍㼐㼐㼘㼑㻙㼟㼔㼍㼜㼑㼐㻌㻼㼕㼏㼗㻙㼡㼜㻌㻯㼛㼕㼘㻌㻌బ䚻㻌 ⁞ኴ䚸ఀ⸨㻌 ဴஓ䚸୕ᾆ㻌 ᓧ䚸ᒾ⇃㻌 ᡂ༟䠄஑኱䠅䠗㻌 ࿴Ἠ㻌 ㍤㑻䚸⏫㻌 ᩗே䚸⾰ᩫ㻌 㢧䠄⏘⥲◊䠅㻌㻴㻚㻌㻿㼍㼟㼍䚸㻌 㼀㻚㻌㻵㼠㼛䚸㻌 㻿㻚㻌㻹㼕㼡㼞㼍䚸㻌 㻹㻚㻌㻵㼣㼍㼗㼡㼙㼍㻔㻷㼥㼡㼟㼔㼡㻌㼁㼚㼕㼢㻚㻕䠗㻌 㼀㻚㻌㻵㼦㼡㼙㼕䚸㻌 㼀㻚㻌㻹㼍㼏㼔㼕䚸㻌 㻭㻚㻌㻵㼎㼕㻔㻭㻵㻿㼀㻕㻌㻌㻝㻚㻌 䛿䛨䜑䛻㻌䠙㻠㻡㼻䛾ሙྜ䛾஺ὶᦆኻ≉ᛶ䛻ᗘ䝇䜿䞊䝸䞁䜾๎䜢㐺⏝䛧㻌 ㉸ఏᑟ⥺ᮦ䜢஺ὶ㟁ຊᶵჾ䛻ᛂ⏝䛩䜛㝿䚸㉸ఏᑟᕳ⥺㒊䛯⤖ᯝ䜢 㻲㼕㼓㻚㻞 䛻♧䛩䚹ᶓ㍈䜢ྛᗘ䛻䛚䛡䜛䝊䝻☢ሙ䛷䛾ศ䛷Ⓨ⏕䛩䜛஺ὶᦆኻ䛜䚸෭෾ᶵ䛻䛛䛛䜛඲⇕㈇Ⲵ䛾኱㒊⮫⏺㟁ὶ್䚸⦪㍈䜢䛭䛾 㻞 ஌䛷㝖䛩䜛䛣䛸䛷䚸 ᗘ䛻౫Ꮡ䛧䛺ศ䜢༨䜑䜛䚹䜎䛯䚸㓟໬≀㉸ఏᑟ⥺ᮦ䛿㧗䛔⮫⏺

䛔䝬䝇䝍䞊䜹䞊䝤䛻୍⮴䛩䜛䛣䛸䛜᫂䜙䛛䛻䛺䛳䛯䚹㻌

䛯䜑䚸ᗈ䛔

ᗘ䜢ᣢ䛴

ᗘ㡿ᇦ䛷䛾౑⏝䛜᝿ᐃ䛥䜜䚸஺ὶᦆኻ䛿⥺ᮦ䛾㻠䠊䜎䛸䜑㻌

ᗘ䚸✚ᒙᯛᩘ䚸☢ሙ䛾༳ຍゅᗘ䛻౫Ꮡ䛩䜛䚹䛭䛾䛯䜑䚸㻌 ௨ୖ䛾⤖ᯝ䜘䜚䚸㻠 ศ๭䛥䜜䛯 㻱㼡㻮㻯㻻㻗㻮㻴㻻 ⥺ᮦ䛻䛚䛔䛶䚸ᵝ䚻䛺᮲௳䛻䛚䛡䜛ᦆኻ䛾ぢ✚䜒䜚䛜㔜せ䛷䛒䜛䚹䛣䜜䜎䛷䛻እ㒊☢ሙ䛾༳ຍ᪉ྥ䛜䝔䞊䝥㠃䛻ᑐ䛧䛶ᆶ┤䠄䃗䠙㻥㻜㼻䠅䛾ᡃ䚻䛿䚸㠡ᆺ䝢䝑䜽䜰䝑䝥䝁䜲䝹䜢⏝䛔䛶ᵝ䚻䛺 㻾㻱㻮㻯㻻 ㉸ఏሙྜ䛻㝈䜙䛪䃗䠙㻟㻜㼻䚸㻠㻡㼻䛾ሙྜ䛻䜒ᑟ䝔䞊䝥⥺ᮦ䛾஺ὶᦆኻ≉ᛶ䜢ホ౯䛧䚸஺ὶᦆኻ䛾䛜㐺⏝ྍ⬟䛷䛒䜛䛣䛸䛜᫂䜙䛛䛻䛺䛳䛯䚹㻌

ᗘ䝇䜿

㻝㻜㻤

䞊䝸䞁䜾๎䛾㐺⏝䜢☜ㄆ䛧䛶䛝䛯䚹㻌ᐃ䛻䛿䚸⮫⏺㟁ὶ≉ᛶྥୖ䛾䛯䜑䛻䝢䞁䝙䞁䜾䝉䞁䝍䞊䛸䛧䛶 㻮㼍㻴㼒㻻㻟䠄㻮㻴㻻䠅䜢ῧຍ䛧䚸䛥䜙䛻䝺䞊䝄ຍᕤ䛻䜘䜚㛗ᡭ᪉ྥ䛻 㻠 ศ๭䛥䜜䛯 㻱㼡㻮㼍㻞㻯㼡㻟㻻㼥䠄㻱㼡㻮㻯㻻䠅䠇㻮㻴㻻 ㉸ఏᑟ䝔䞊䝥⥺ᮦ䜢⏝䛔䛯䚹䛣䜜䜎䛷䛻ᡃ䚻䛿䚸☢ሙ䛾༳ຍ᪉ྥ䛜䝔䞊䝥㠃䛻ᑐ䛧䛶ᆶ┤䛷䛒䜛ሙྜ䛻䚸ᗘ䝇䜿䞊䝸䞁䜾๎䛜㐺⏝ྍ⬟䛷䛒䜛䛣䛸䛜᫂䜙䛛䛻䛧䛶䛝䛯䚹☢ሙ䛾༳ຍゅᗘ䜢ኚ䛘䛶஺ὶᦆኻ≉ᛶ䜢ᐃ䛧䚸㻝㻜㻣㻭㻯㻌㻸㼛㼟㼟㼇㻶㻛㼙 㻟 㼏㼥㼏㼘㼑㼉㻌ᗘ䝇䜿䞊䝸䞁䜾๎ᗘ䝇䜿䞊䝸䞁䜾๎䛾㐺⏝䛾ྍྰ䜢᳨ウ䛧䛯䚹㻌

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㻟㻚㻌 ᐇ㦂⤖ᯝ㻌㻌 㻡㻜㻷 䛻䛚䛡䜛ྛ༳ຍゅᗘ䛾஺ὶᦆኻ䛾 ᐃ⤖ᯝ䜢 㻲㼕㼓㻚㻝 䛻㻌㻲㼕㼓㻚㻝㻌㻭㻯㻌㼘㼛㼟㼟㼑㼟㻌㼛㼒㻌㻱㼡㻮㻯㻻㻗㻮㻴㻻㻌㼠㼍㼜㼑㼟㻌㼍㼠㻌㻡㻜㻌㻷㻌

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㻲㼕㼑㼘㼐㻌㻭㼙㼜㼘㼕㼠㼡㼐㼑㻛 P 㻜 㻵 㻯㻜

♧䛩䚹ゅᗘ䛾ቑ኱䛻క䛔஺ὶᦆኻ䛾ቑຍ䛜䜏䜙䜜䜛䚹௚䛾㻌㻲㼕㼓㻚㻞㻌㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼟㼏㼍㼘㼕㼚㼓㻌㼛㼒㻌㻭㻯㻌㼘㼛㼟㼟㼑㼟㻌㼛㼒㻌㻠㻙㼒㼕㼘㼍㼙㼑㼚㼠㻌ᗘ䛻䛚䛔䛶䜒ྠᵝ䛾ഴྥ䛜䜏䜙䜜䛯䚹እ㒊☢ሙ༳ຍゅᗘ䃗㻱㼡㻮㻯㻻㻗㻮㻴㻻㻌㼍㼠㻌 䃗㻩㻠㻡㻌㼐㼑㼓㼞㼑㼑㻌― 29 ―

第95回

2017年度秋季低温工学・超電導学会

1B-p02

Y 系線材特性ᤲᘬ☢ሙ୰䛾᧍⥺໬㉸ఏᑟ䝔䞊䝥⥺䛻䛚䛡䜛☢໬䛚䜘䜃ᦆኻ䛾ゎᯒ㻦㻌⮫⏺㟁ὶᐦᗘ䛾☢ሙゅᗘ౫Ꮡᛶ䛾ຠᯝ㻌㻭㼚㼍㼘㼥㼟㼕㼟㻌㼛㼒㻌㼙㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㼍㼚㼐㻌㼘㼛㼟㼟㻌㼜㼛㼣㼑㼞㻌㼛㼚㻌㼍㻌㼠㼣㼕㼟㼠㼑㼐㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㼠㼍㼜㼑㻌㼣㼕㼞㼑㻌㼕㼚㻌㼞㼍㼙㼜㼕㼚㼓㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㼟㻦㻌㻱㼒㼒㼑㼏㼠㻌㼛㼒㻌㼒㼕㼑㼘㼐㻙㼍㼚㼓㼘㼑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㼐㼑㼚㼟㼕㼠㼥㻌㻌ᮾ㻌 㝧୍ 䠄⏘⥲◊䠅䠗 Huiming Zhang 䠄୰ᅜ㟁ຊ⛉Ꮫ◊✲㝔䠅䠗 㤿Ώ㻌 ᗣᚨ 䠄⏘⥲◊䠅HIGASHI Yoichi (AIST); Zhang Huiming (CEPRI); MAWATARI Yasunori (AIST)
E-mail: y.higashi@aist.go.jp㻌㻌㻝䠊䛿䛨䜑䛻㻌

☢Ẽඹ㬆⏬ീ(MRI)⿦⨨䛾䛯䜑䛾㉸ఏᑟ䝁䜲䝹䜈䛾ᛂ⏝䜢┠ᣦ䛧䛶䚸ᕼᅵ㢮⣔㖡㓟໬≀㉸ఏᑟ䝔䞊䝥⥺ᮦ䛾㛤Ⓨ䛜⾜䜟䜜䛶䛔䜛䚹㉸ఏᑟ䝔䞊䝥⥺ᮦ䜢ᕳ䛔䛯䝁䜲䝹ෆ㒊䛷䛿䚸䝔䞊䝥㠃䛻ᆶ┤䛺☢ሙᡂศ䛻ᛂ⟅䛧䚸㐽ⶸ㟁ὶ䛜ὶ䜜䜛䚹䛣䛾㐽ⶸ㟁ὶ䛻ㄏ㉳䛥䜜䛯☢
ሙ䛿䚸☢ሙ䛾✵㛫ⓗᆒ୍ᛶ䛚䜘䜃᫬㛫ⓗᏳᐃᛶ䜢஘䛩䛯䜑䚸䛭䛾ᢚไ䛜኱䛝䛺ㄢ㢟䛸䛺䛳䛶䛔䜛䚹MRI 䝬䜾䝛䝑䝖ෆ㒊䛾୍ᵝ䛺☢ሙ䜢ᚓ䜛䛯䜑䛻䚸⣽⥺໬[1]䜔᧍⥺໬[2]䜢⏝䛔䛯⥺ᮦ㛤Ⓨ䛜⾜䜟䜜䛶䛔䜛䚹䛣䜜䜎䛷䛻䚸᧍⥺໬䛸⣽⥺໬䛜᪋䛥䜜䛯㉸ఏᑟయ✚ᒙᵓ㐀䛻ᑐ䛧䛶䚸஺ὶ☢ሙ୰䛾ヲ⣽䛺㟁☢ሙゎᯒ䛜⾜䜟䜜䛯[3]䚹
ᮏ◊✲䛷䛿䚸MRI 䝬䜾䝛䝑䝖䛾ບᾘ☢䜢ᛕ㢌䛻䚸ᐃ㏿ᤲᘬ☢ሙ୰䛾㟁☢ሙᛂ⟅䜢⪃䛘䜛䚹䛣䛣䛷䛿䚸⣽⥺໬䛾ຠᯝ䛿ู䛻䛧䚸䜎䛪䚸୍ᯛ䛾㉸ఏᑟ䝔䞊䝥⥺䛾᧍⥺ᑟయ໬䛜☢໬䛚䜘䜃ᦆኻ䛻୚䛘䜛ຠᯝ䛻↔Ⅼ䜢ᙜ䛶䜛䚹⤖ྜᦆኻ䛿᧍⥺䝢䝑䝏㛗䜢▷䛟䛩䜛䛣䛸䛷పῶྍ⬟䛷䛒䜛䛣䛸䛜▱䜙䜜䛶䛚䜚[4]䚸᧍⥺໬䝔䞊䝥⥺䛾⌮ㄽ◊✲䛿᭷⏝䛷䛒䜛䚹㻞䠊ഴ䛔䛯ᖹᆠ䝔䞊䝥㏆ఝ㻌᧍⥺䝢䝑䝏㛗‫ ݌ܮ‬䛜༑ศ㛗䛔ሙྜ䚸᧍⥺໬㉸ఏᑟ䝔䞊䝥⥺䜢ഴ䛔䛯↓㝈㛗䛾ᖹᆠ䝔䞊䝥䛾㞟ྜ䛸ぢ䛺䛩㏆ఝ䛜Ⰻ䛔㏆ఝ䛸䛺䜚䚸☢໬䛚䜘䜃ᦆኻ䛾ゎᯒⓗ⾲ᘧ䜢ᚓ䜛䛣䛸䛜䛷䛝䜛䚹䜎䛯䚸ู䛾䜰䝥䝻䞊䝏䛸䛧䛶䚸᧍⥺໬ ㉸ ఏ ᑟ 䝔 䞊 䝥 ⥺ 䜢 ⾲ 䛩 ᴟ ᗙ ᶆ ⾲ ♧ ൫‫ݔ‬, ‫ݕ‬, ‫ݖ‬൯ =(‫ ݑ‬cos൫ߠ + ݇‫ݒ‬൯, ‫ ݑ‬sin൫ߠ + ݇‫ݒ‬൯, ‫)ݒ‬䛻䛚䛡䜛 Maxwell ᪉⛬ᘧ䜢⪃䛘䜛䚹᪉⛬ᘧ୰䛻䚸᧍⥺໬䛾ຠᯝ䜢⾲䛩㡯
2 2‫ ߦ ݇ ן‬䛜⌧䜜䜛(䝔䞊䝥㠃ୖߠ = 0 䛷䛿䚸ߦ = ‫)ݑ‬䛜䚸䝔䞊䝥⥺ᮦ䜢⦆䛟᧍䛳䛯ሙྜ䚸‫ ݌ܮ‬՜ λ䛸䛧䚸݇ = 2ߨ/‫ ݌ܮ‬䛾㧗ḟ䛾⿵ṇ䜢↓ど䛷䛝䜛䚹䛣䛾ሙྜ䚸Maxwell ᪉⛬ᘧ䛾ゎ䛛䜙䚸ഴ䛔䛯ᖹᆠ䝔䞊䝥㏆ఝ䜢⏝䛔䛶ᚓ䛯䜒䛾䛸ྠ䛨☢໬䚸ᦆኻ䛻ᑐ䛩䜛ゎᯒⓗ䛺⾲ᘧ䜢ᚓ䜛䚹☢໬䚸ᦆኻඹ䛻‫ ݌ܮ‬䛻䛿౫Ꮡ䛫䛪䚸᧍⥺໬䛰䛡䛾ຠᯝ䛻䜘䜚䚸ᖹᆠ䝔䞊䝥䛻䛚䛡䜛⾲ᘧ䛸ẚ䜉䛶䚸ᗄఱⓗᅉᏊ‫(ܤ‬2݊ + 1/2݊, 1/2)/ߨ䛜௜䛝䚸䜟䛪䛛䛻ᑠ䛥䛟䛺䜛䚹䛣䛣䛷䚸‫ܤ‬䛿䝧䞊䝍㛵ᩘ䚸݊䛿㉸ఏᑟ㠀⥺ᙧ᢬ᢠ䛾෢䛷䛒䜛䚹䛣䛾ᅉᏊ䛿݊ ՜ λ䛾 Bean ᴟ㝈䛷2/ߨ䛸䛺䜛䛣䛸䛛䜙䚸ᗄఱⓗᅉᏊ䛿☢᮰䛸㙐஺䛩䜛䝔䞊䝥⥺䛾㠃✚䛜᧍⥺໬䛻䜘䛳䛶䚸ᑠ䛥䛟䛺䜛ຠᯝ䜢⾲䛩䛸ゎ㔘䛷䛝䜛䚹ᡤ䛷䛿䚸☢ሙ᪉ྥ䛻☢໬䛧䛺䛔䛾䛷䚸ᦆኻ䛻䜋䛸䜣䛹ᐤ୚䛧䛺䛔䛯䜑䛷䛒䜛䚹䛧䛛䛧䚸᧍⥺䛾ሙྜ䚸䝔䞊䝥㠃(ab 㠃)䛜☢ሙ䛻ᑐ䛧䛶ᚎ䚻䛻ഴ䛔䛶䛔䛟䛯䜑䚸䛭䜜䜢཯ᫎ䛧䛶‫ܬ‬ୡ 䛾್䛜䝔䞊䝥㠃䛾ሙᡤ䛤䛸䛻㐃⥆ⓗ䛻ኚ໬䛩䜛䚹ᮏ◊✲䛷䛿䛣䛾ຠᯝ䜢ྲྀ䜚㎸䜣䛰ゎᯒィ⟬䛚䜘䜃ᩘ್䝅䝭䝳䝺䞊䝅䝵䞁䜢⾜䛖䚹㻌 ➼᪉ⓗ䛺஘䜜䛜Ꮡᅾ䛩䜛㉸ఏᑟయ䛾୍㍈␗᪉ᛶ䛿䚸᭷ຠᒁᡤ☢ሙ‫ܤ‬෨(ߦ, ߮, ‫ߦ(ܤ)߮(ߝ = )ݐ‬, ߮, ‫)ݐ‬䜢㏻䛧䛶⌮ㄽ䛻 ྲྀ 䜚 ㎸ 䜎 䜜 䜛 [5] 䚹 䛣 䛣 䛷 䚸 ‫ ܤ‬䛿 ෆ 㒊 ☢ ሙ 䚸 ߝ(߮) =(cos ଶ ߮ + ߛ ିଶ sinଶ ߮)ଵ/ଶ 䛿䝇䜿䞊䝸䞁䜾ᅉᏊ䛷䚸߮ = ݇‫ݒ‬
䛿 c ㍈䛸☢ሙ䛸䛾㛫䛾ゅᗘ䚸ߛ䛿␗᪉ᛶ䝟䝷䝯䞊䝍䛷䛒䜛䚹‫ܬ‬ୡ 䛾☢ሙゅᗘ౫Ꮡᛶ䛾༢⣧䛺䝰䝕䝹䛸䛧䛶䚸୍⯡໬䛥䜜䛯 Kim 䝰䝕䝹[6,7]‫ܬ‬ୡ଴‫ܬ‬ୡ [‫ܤ‬෨(ߦ, ߮, ‫= ])ݐ‬[1 + ‫ܤ‬෨(ߦ, ߮, ‫)ݐ‬/‫ܤ‬଴ ]ఈ
䜢᥇⏝䛩䜛䚹‫ܬ‬ୡ଴ , ‫ܤ‬଴ 䛚䜘䜃ߙ䛿ᐃᩘ䛷䛒䜛䚹ゎᯒⓗ䛺⾲ᘧ䛿⮬ᕫ☢ሙ䜢↓ど䛧䛯ᐃ㏿ᤲᘬ☢ሙ䛾ୗᑟ䛛䜜䜛䛯䜑䚸☢໬䛚䜘䜃ᦆኻ䛾᫬㛫౫Ꮡᛶ䛾ᩘ್䝅䝭䝳䝺䞊䝅䝵䞁䛻䛚䛔䛶䚸ᐃ㏿ᤲᘬ㡿ᇦ䛷䛾ẚ㍑䛜ྍ⬟䛸䛺䜛䚹
ㅮ₇䛷䛿䚸‫ܬ‬ୡ 䛾☢ሙゅᗘ౫Ꮡᛶ䜢⪃៖䛧䛯ゎᯒ䛾ヲ⣽䜢ሗ࿌䛧䚸☢ሙゅᗘ౫Ꮡᛶ䜢↓ど䛧䛯ሙྜ䛾⾲ᘧ䛜☢
໬䛚䜘䜃ᦆኻ䛾ᩘ್䜢⢒䛟ぢ✚䜒䜛Ⰻ䛔㏆ఝ䛸䛺䜛䛣䛸䜢ᣦ᦬䛩䜛䚹ㅰ㎡

㻌 ㆟ㄽ䛸᭷┈䛺䝁䝯䞁䝖䜢㡬䛝䜎䛧䛯䚸࿴Ἠ㍤㑻༤ኈ䚸⏫
ᩗே༤ኈ䚸ྂ℩඘✑༤ኈ䚸▼⏣ⱱஅ༤ኈ䚸Ⅽ䞄஭ᙉ෸ᩍᤵ䛚䜘䜃ྜྷ⏣Ⰻ⾜༤ኈ䛻ឤㅰ⮴䛧䜎䛩䚹䜎䛯䚸ᮏ◊✲䛿 NEDO 䝥䝻䝆䜵䜽䝖䛾୍⎔䛸䛧䛶⾜䜟䜜䜎䛧䛯䚹ཧ⪃ᩥ⊩[1] N. Amemiya et al., Supercond. Sci. Technol. 17,1464 (2004).
[2] M. Takayasu et al., Supercond. Sci. Technol. 25,
014011 (2012).
[3] N. Amemiya et al., J. Appl. Phys. 100, 123907(2006).
[4] M. N. Wilson, Superconducting Magnets (Clarendon,
Oxford, 1983).
[5] G. Blatter et al., Phys. Rev. Lett. 68, 875 (1992).
[6] Y. B. Kim et al., Phys. Rev. Lett. 9, 306 (1962).
[7] E. Pardo et al., Supercond. Sci. Technol. 24, 065007(2011).

㻟䠊⮫⏺㟁ὶᐦᗘ䛾☢ሙ䛚䜘䜃☢ሙゅᗘ౫Ꮡᛶ㻌㻌 ୖ㏙䛾⤖ᯝ䜢ᑟ䛟㐣⛬䛷䛿䚸⮫⏺㟁ὶᐦᗘ‫ܬ‬ୡ 䜢☢ሙ䛜䝔䞊䝥㠃䛻ᆶ┤䛻䛺䜛ሙᡤ䛻䛚䛡䜛್䛷ᅛᐃ䛧䛶䛚䜚䚸‫ܬ‬ୡ 䛾☢ሙ䛚䜘䜃☢ሙゅᗘ౫Ꮡᛶ䛜⪃៖䛥䜜䛶䛔䛺䛛䛳䛯䚹䛭䛾⌮⏤䛿䚸☢ሙ䛜䝔䞊䝥㠃䛸ᖹ⾜䛻䛺䜛ሙ― 30 ―

第95回

2017年度秋季低温工学・超電導学会

1B-p03

Y 系線材特性㼗㻴㼦 ᖏ䛻䛚䛡䜛ᆶ┤☢ሙୗ䛾Ᏻᐃ໬ᒙ䛜 㻳㼐㻮㻯㻻 ⥺ᮦ䛾஺ὶᦆኻ䛻୚䛘䜛ᙳ㡪㻌㻵㼚㼒㼘㼡㼑㼚㼏㼑㻌㼛㼒㻌㻿㼠㼍㼎㼕㼘㼕㼦㼑㼐㻌㻸㼍㼥㼑㼞㻌㼛㼚㻌㻭㻯㻌㼘㼛㼟㼟㻌㼛㼒㻌㻳㼐㻮㻯㻻㻌㼀㼍㼜㼑㻌 㻌㻱㼤㼜㼛㼟㼑㼐㻌㼠㼛㻌㻱㼤㼠㼑㼞㼚㼍㼘㻌㼂㼑㼞㼠㼕㼏㼍㼘㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㻲㼕㼑㼘㼐㻌㼕㼚㻌㼗㻴㼦㻌㻲㼞㼑㼝㼡㼑㼚㼏㼥㻌㻮㼍㼚㼐㻌㻌஭ୖ㻌 Ⰻኴ㻌 㻔ᮾ໭኱㻘㻌 ᪥ᮏᏛ⾡᣺⯆఍≉ู◊✲ဨ 㻰㻯㻕䠗ᐑᇛ㻌 ኱㍜䠈ὠ⏣㻌 ⌮䠈ᯇᮌ㻌 ⱥᩄ䠄ᮾ໭኱䠅㻌
INOUE Ryota (Tohoku Univ., JSPS Research Fellowships for Young Scientists DC);MIYAGI Daisuke, TSUDA Makoto, MATSUKI Hidetoshi (Tohoku Univ.)
E-mail: ryota.inoue.q3@dc.tohoku.ac.jp
㻌Table 1. Specifications of GdBCO tapes.
㻝䠊䛿䛨䜑䛻㻌
SampleI
IIIII
ᡃ䚻䛿ప࿘Ἴ㡿ᇦ䠄㻝㻜㼗㻴㼦 ௨ୗ䠅䛻䛚䛡䜛 㼅 ⣔㧗 ㉸㟁ᑟ
*G%&2OD\HU ȝP
1.0
2.0⥺䜢⏝䛔䛯኱ᐜ㔞⏝㠀᥋ゐ⤥㟁䝅䝇䝔䝮䛾ྍ⬟ᛶ䛻䛴䛔䛶Upper copper OD\HU ȝP
20.0
75.0
᳨ウ䛧䛶䛔䜛㼇㻝㼉䚹㻴㼀㻿 䝁䜲䝹䜢పᦆኻ໬䛩䜛䛯䜑䛻䛿䠈㼗㻴㼦
LRZHUFRSSHUOD\HU ȝP
20.0ᖏ䛾஺ὶ☢ሙ༳ຍ᫬䛻䛚䛡䜛Ᏻᐃ໬ᒙ䜢ྵ䜑䛯 㻴㼀㻿 ⥺ᮦ䛾
8SSHUVLOYHUOD\HU ȝP
1.5
6.0/RZHUVLOYHUOD\HU ȝP
1.5஺ὶᦆኻ≉ᛶ䜢᫂☜໬䛩䜛ᚲせ䛜䛒䜛䚹䛭䛣䛷䠈㻳㼐㻮㻯㻻 ⥺+DVWHOOR\OD\HU ȝP
60.0
75.0
ᮦ䛻䛚䛔䛶䠈Ᏻᐃ໬ᒙ䛾䛺䛔⥺ᮦ䠈Ᏻᐃ໬ᒙ䛾ⷧ䛔⥺ᮦ䛚Tape width (mm)4.05.0䜘䜃ཌ䛔⥺ᮦ䜢⏝ព䛧䠈㼗㻴㼦 ᖏ䛾஺ὶእ㒊☢ሙ䛜䠈㻴㼀㻿 ⥺ᮦIC ȝ9FPDW7.  $
118
91
314
n YDOXH ȝ9FPDW7.
35
32
33
䛾ᖜᗈ㠃䛻ᑐ䛧䛶ᆶ┤᪉ྥ䛻༳ຍ䛥䜜䛯ሙྜ䛻䛚䛡䜛஺ὶᦆኻ䛾࿘Ἴᩘ౫Ꮡᛶ䛻䛴䛔䛶᳨ウ䛧䛯䚹㻌㻞䠊ᐃ᪉ἲ㻌ᐃ䛻౑⏝䛧䛯 㻳㼐㻮㻯㻻 ⥺ᮦ䛾ㅖඖ䜢 㼀㼍㼎㼘㼑㻌 㻝 䛻♧䛩䚹䛣䛣䛷䠈㻿㼍㼙㼜㼘㼑㻌㻵 䛿䠈Ᏻᐃ໬ᒙ䛾↓䛔⥺ᮦ䛷䛒䜚䠈㻿㼍㼙㼜㼘㼑㻌㻵㻵 䛿䠈㻿㼍㼙㼜㼘㼑㻌 㻵 䛻Ᏻᐃ໬ᒙ䜢✚ᒙ䛧䛯⥺ᮦ䛷䛒䜛䚹䜎䛯䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵㻵䛿䠈㻿㼍㼙㼜㼘㼑㻌 㻵 䛚䜘䜃 㻿㼍㼙㼜㼘㼑㻌 㻵㻵 䜘䜚⮫⏺㟁ὶ䛜㧗䛟䠈Ᏻᐃ໬ᒙ䛜ཌ䛔⥺ᮦ䛷䛒䜛䚹⥺ᮦ䛻Ⓨ⏕䛩䜛☢໬ᦆኻ䛿䠈䝺䞊䝇䝖䝷䝑䜽䝁䜲䝹ෆ䛻タ⨨䛧䛯䝢䝑䜽䜰䝑䝥䝁䜲䝹㼇㻞㼉䛚䜘䜃఩┦᳨ฟ⏝䛾䝃䞊䝏䝁䜲䝹䜢⏝䛔䛶 ᐃ䛧䛯䚹䛺䛚䠈ᐇ㦂䛿䠈⥺ᮦ䜢ᾮయ❅⣲䠄㻣㻣㻷䠅䛻ᾐ䛧䛯≧ែ䛷⾜䛳䛯䚹㻌㻟䠊 ᐃ⤖ᯝ䛚䜘䜃⪃ᐹ㻌㻿㼍㼙㼜㼘㼑㻌 㻵䠈㻵㻵䠈㻵㻵㻵 䛻䛚䛡䜛 㻝 䝃䜲䜽䝹䛒䛯䜚䛾஺ὶᦆኻ䛾ᐃ⤖ᯝ䜢 㻲㼕㼓㻚㻝 䛻♧䛩䚹㻲㼕㼓㻚㻝㻔㼍㻕䜘䜚䠈㻿㼍㼙㼜㼘㼑㻌㻵 䛾 㻝 䝃䜲䜽䝹ᙜ䛯䜚䛾஺ὶᦆኻ䛿䠈㼚 ್䛾ᙳ㡪䛻䜘䜚䠈䜟䛪䛛䛻ῶᑡ䛧䛯䚹䛣䜜䛻ᑐ䛧䠈㻲㼕㼓㻚㻝㻔㼎㻕䜘䜚䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵 䛷䛿䠈እ㒊☢ሙ䛜ᑠ䛥䛔ሙྜ䛻䠈㻝 䝃䜲䜽䝹ᙜ䛯䜚䛾ᦆኻ䛿䠈࿘Ἴᩘ䛸䛸䜒䛻䜟䛪䛛䛻ቑຍ䛧䛯䚹䛣䜜䛿䠈࿘Ἴᩘ䛾ቑຍ䛸䛸䜒䛻䠈㻴㼀㻿 ᒙ䛾ᦆኻ䛻ᑐ䛩䜛Ᏻᐃ໬ᒙ䛷Ⓨ⏕䛩䜛 㟁ὶᦆኻ䛜኱䛝䛟䛺䛳䛯䛯䜑䛸⪃䛘䜙䜜䜛䚹୍᪉䠈እ㒊☢ሙ䛜኱䛝䛔ሙྜ䛿䠈㻝 䝃䜲䜽䝹䛒䛯䜚䛾඲ᦆኻ䛿䠈࿘Ἴᩘ䛻౫Ꮡ䛫䛪䜋䜌୍ᐃ䛸䛺䛳䛯䚹䛣䜜䛿䠈Ᏻᐃ໬ᒙ䛾ᦆኻ䛻ẚ䜉䠈㻴㼀㻿 ᒙ䛾ᦆኻ䛜ᨭ㓄ⓗ䛷䛒䛳䛯䛯䜑䛸⪃䛘䜙䜜䜛䚹㻲㼕㼓㻚㻝㻔㼏㻕䜘䜚䠈㻿㼍㼙㼜㼘㼑㻌㻵㻵㻵 䛷䛿䠈እ㒊☢ሙ䛜ᑠ䛥䛔ሙྜ䛻䠈㻝 䝃䜲䜽䝹䛒䛯䜚䛾ᦆኻ䛜䠈࿘Ἴᩘ䛸䛸䜒䛻ቑຍ䛧䛯䚹䜎䛯䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵㻵 䛾࿘Ἴᩘቑຍ䛻ᑐ䛩䜛 㻝 䝃䜲䜽䝹䛒䛯䜚䛾ᦆኻ䛾ቑຍ⋡䛿䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵 䜘䜚኱䛝䛟䛺䛳䛯䚹䛣䜜䛿䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵㻵䛾⮫⏺㟁ὶ್䛜 㻿㼍㼙㼜㼘㼑㻌 㻵㻵 䜘䜚䜒㧗䛟䠈㻿㼍㼙㼜㼘㼑㻌 㻵㻵㻵 䛾 㻴㼀㻿 ᒙ䛷Ⓨ⏕䛩䜛䝠䝇䝔䝸䝅䝇ᦆ䛜ᑡ䛺䛟䛺䜚䠈Ᏻᐃ໬ᒙ䛷Ⓨ⏕䛩䜛㟁ὶᦆ䛾ᙳ㡪䛜䜘䜚㢧ⴭ䛻⾲䜜䛯䛯䜑䛸⪃䛘䜙䜜䜛䚹䜎䛯䠈እ㒊☢ሙ䛜኱䛝䛔ሙྜ䛿䠈㻿㼍㼙㼜㼘㼑㻌㻵㻵 䛸ྠᵝ䛻䠈Ᏻᐃ໬ᒙ䛾ᦆኻ䛻ẚ䜉䠈㻴㼀㻿 ᒙ䛾ᦆኻ䛜ᨭ㓄ⓗ䛻䛺䛳䛯䛯䜑䠈㻴㼀㻿 ⥺ᮦ䛾 㻝䝃䜲䜽䝹䛒䛯䜚䛾඲ᦆኻ䛜䜋䜌୍ᐃ䛻䛺䛳䛯䛸⪃䛘䜙䜜䜛䚹௨ୖ䛾⤖ᯝ䜘䜚䠈䠵⣔㧗 ㉸㟁ᑟ⥺ᮦ䜢㠀᥋ゐ⤥㟁䝅䝇䝔䝮⏝䝁䜲䝹䛻㐺⏝䛩䜛ሙྜ䛿䠈㻝㻜㼗㻴㼦 ࿘㎶䛾ప࿘Ἴ㡿ᇦ䛻䛚䛔䛶㟁ὶ㈇Ⲵ⋡䜢㧗䛟䛧䛶㐠㌿䛩䜛䛣䛸䛻䜘䜚䠈Ᏻᐃ໬ᒙ䛾 㟁ὶᦆኻ䛾ᙳ㡪䜢ᢚไ䛷䛝䜛䛣䛸䛜䜟䛛䛳䛯䚹䛧䛛䛧䠈㻴㼀㻿 䝁䜲䝹䛾஺ὶᦆኻ䛿䠈࿘Ἴᩘ䜔㟁ὶ䛜኱䛝䛟䛺䜛䛻䛴䜜䛶ቑຍ䛩䜛䛯䜑䠈㼗㻴㼦 ᖏ䛻䛚䛡䜛 㻴㼀㻿 䝁䜲䝹䛾஺ὶᦆኻ䛾పῶ䛜㔜せ䛸䛺䜛䚹䛣䛾䛯䜑䠈௒ᚋ䛿 㼗㻴㼦 ᖏ䛷䛾పᦆኻ໬䛻㐺䛧䛯㻴㼀㻿 䝁䜲䝹䛾ᵓᡂ᪉ἲ䛻䛴䛔䛶᳨ウ䛩䜛ணᐃ䛷䛒䜛䚹㻌㻠䠊ㅰ㎡㻌ᮏ◊✲䛿䠈㻶㻿㻼㻿 ⛉◊㈝䠄㻶㻼㻝㻣㻶㻜㻞㻞㻠㻞䠅䛾ຓᡂ䜢ཷ䛡䛯䜒䛾䛷䛒䜛䚹㻌(a) Non-copper layer (Sample I)(b) Thin copper layer (Sample II)



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(c) High critical current and thick copper layer (Sample III)Fig.1 Experimental results of AC loss per cycle in three typesof GdBCO tapes as a function of frequency.
㻌ཧ⪃ᩥ⊩㻌
[1]R. Inoue et al. : IEEE Trans. Appl. Supercond 9ol.27,
No.1(2017) 5400106[2]Z. Jiang et al. : Supercond. Sci. Technol., 9RO17 (2004)― 31 ―

第95回

2017年度秋季低温工学・超電導学会

1B-p04

Y 系線材特性☢Ẽ㢧ᚤἲ䜢⏝䛔䛯እ㒊☢⏺䛺䜙䜃䛻㏻㟁㟁ὶ䛾ྠ᫬༳ຍ⎔ቃୗ䛻䛚䛡䜛㻌㻾㻱㻙㻝㻞㻟 ⥺ᮦ䛾☢໬⦆࿴≉ᛶホ౯䛸ゎᯒ㻌㻹㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼍㼚㼐㻌㻭㼚㼍㼘㼥㼟㼕㼟㻌㼛㼒㻌㻹㼍㼓㼚㼑㼠㼕㼦㼍㼠㼕㼛㼚㻌㻾㼑㼘㼍㼤㼍㼠㼕㼛㼚㻌㻼㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼕㼚㻌㻾㻱㻙㻝㻞㻟㻌㻯㼛㼍㼠㼑㼐㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㻌㼡㼚㼐㼑㼞㻌㼠㼔㼑㻌㻭㼜㼜㼘㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㼎㼛㼠㼔㻌㻱㼤㼠㼑㼞㼚㼍㼘㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㻲㼕㼑㼘㼐㻌㼍㼚㼐㻌㼀㼞㼍㼚㼟㼜㼛㼞㼠㻌㻯㼡㼞㼞㼑㼚㼠㻌㻙㻠㻡㼀㼞㼍㼚㼟㼜㼛㼞㼠㻌㼏㼡㼞㼞㼑㼚㼠㻘
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㻼㼛㼟㼕㼠㼕㼛㼚㻌㼕㼚㻌㼣㼕㼐㼠㼔㻌㼐㼕㼞㼑㼏㼠㼕㼛㼚㻘㻌 㼥㻌㻌㻔㼙㼙㻕㻲㼕㼓㻚㻌㻟㻌㻯㼛㼙㼜㼍㼞㼕㼟㼛㼚㻌㼛㼒㻌㼟㼔㼕㼑㼘㼐㼕㼚㼓㻌㼏㼡㼞㼞㼑㼚㼠㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼕㼚㻌㻲㼕㼓㻚㻌㻞㻌㼍㼚㼐㻌㼠㼔㼑㼛㼞㼑㼠㼕㼏㼍㼘㻌㼏㼡㼞㼢㼑㻌㼎㼍㼟㼑㼐㻌㼛㼚㻌㼠㼔㼑㻌㻯㼞㼕㼠㼕㼏㼍㼘㻌㻿㼠㼍㼠㼑㻌㻹㼛㼐㼑㼘㻚㻌㻹㼍㼓㼚㼑㼠㼕㼏㻌㼙㼛㼙㼑㼚㼠㻌㼜㼑㼞㻌㼡㼚㼕㼠㻌㼘㼑㼚㼓㼠㼔㻘㻌㼙㻌㻔㼑㼙㼡㻛㼙㻕㻌㻝䠊䛿䛨䜑䛻㻌
RE-123 ⥺ᮦ䛿䚸㧗☢⏺䝬䜾䝛䝑䝖䜈䛾㐺⏝䛜ᮇᚅ䛥䜜䛶䛔䜛䚹୍᪉䚸ྠ⥺ᮦ䛿䝔䞊䝥ᙧ≧䜢䛧䛶䛔䜛䛯䜑䛻䚸☢໬䛾ᙳ㡪䛜኱䛝䛟䚸䝬䜾䝛䝑䝖ᛂ⏝᫬䛾☢⏺䛾✵㛫ᆒ୍ᛶ䜔᫬㛫Ᏻᐃᛶ䛻኱䛝䛺ㄢ㢟䜢ᢪ䛘䛶䛔䜛䚹ᚑ䛳䛶䚸ྠ⥺ᮦ䛾☢໬䜔䛭䛾᫬㛫ኚ໬䛾䝯䜹䝙䝈䝮䜢ゎ᫂䛧䛯ୖ䛷ᑐ⟇䜢䛸䜛䛣䛸䛜୙ྍḞ䛷䛒䜛䛜䚸୍⯡䛻䛿⥺ᮦ඲య䛸䛧䛶䚸䛒䜛䛔䛿䝁䜲䝹䛸䛧䛶䛾䝬䜽䝻䛺⌧㇟䛧䛛ホ౯䛥䜜䛶䛚䜙䛪䚸ヲ⣽䛺㟁☢⌧㇟䛾ゎ᫂䛜ᅔ㞴䛸䛺䛳䛶䛔䜛䚹䜎䛯䚸䝬䜾䝛䝑䝖ᛂ⏝᫬䛻䛿⥺ᮦ䛻䛿
㍺㏦㟁ὶ䛜༳ຍ䛥䜜䜛䛜䚸୍⯡ⓗ䛺☢Ẽⓗ ᐃ䛷䛿䛭䛾ᙳ㡪䛜᫂䜙䛛䛸䛺䛳䛶䛔䛺䛔䚹䛭䛣䛷ᮏ◊✲䛷䛿䚸䝬䜽䝻䛺☢Ẽ䝰䞊䝯䞁䝖䜢ホ౯䛩䜛ᡭἲ䛷䛿䛺䛟䚸✵㛫ศゎ⬟䜢᭷䛩䜛☢Ẽ㢧ᚤἲ䛻䜘䛳䛶䚸እ㒊☢⏺䛺䜙䜃䛻㏻㟁㟁ὶ䛾ྠ᫬༳ຍ⎔ቃୗ䛻䛚䛡䜛 RE-123 ⥺ᮦ䛾☢໬⦆࿴≉ᛶ䜢ホ౯䛩䜛䛸䛸䜒䛻䚸䛭䛾䝰䝕䝹໬䛻䛴䛔䛶᳨ウ䛧䛯䚹㻌㻞䠊ᐇ㦂᪉ἲ㻌ᐃᑐ㇟䛿 5 mm ᖜ䛾 RE-123 ⥺ᮦ䛸䛧䚸㉮ᰝᆺ䝩䞊䝹⣲Ꮚ㢧ᚤ㙾䠄SHPM䠅䜢⏝䛔䛶 ᐃ䜢⾜䛳䛯䚹ලయⓗ䛻䛿䚸ヨᩱ䜢 79 K 䛻෭༷䛧䚸୍ᐃ㟁ὶ䜢༳ຍᚋ䚸-60 mT 䛾እ㒊☢⏺䜢༳ຍ䛧䛯㝿䛾⥺ᮦᖜ᪉ྥ䛾☢⏺ศᕸ䜢䝩䞊䝹䝉䞁䝃䛾㉮ᰝ䛻䜘䛳䛶ィ 䛧䛯䚹䜎䛯䚸䛭䛾㏻㟁㟁ὶ౫Ꮡᛶ䜢ホ౯䛧䛯䚹㻌㻟䠊⤖ᯝ䞉⪃ᐹ㻌㻌 㻌 Fig. 1 䛻☢໬ᚋ 17 s 䛻䛚䛡䜛☢⏺ศᕸ䜢♧䛩䚹㏻㟁㟁ὶ䛻䜘䛳䛶☢⏺ศᕸ䛜ኚ໬䛧䛶䛚䜚䚸䛭䛾䝢䞊䜽఩⨨䛾⛣ື䛛䜙䚸☢໬䛻ᐤ୚䛩䜛☢໬㟁ὶ䛾ศᕸ䛜㏻㟁㟁ὶ䛻౫Ꮡ䛧䛶ኚ໬䛧䛶䛔䜛䛸᥎ᐹ䛷䛝䜛䚹䛣䛣䛷䚸 70 A ㏻㟁᫬䛾㟁ὶศᕸ䛾⦆࿴Ἴᙧ䛻╔┠䛩䜛䛸䠄Fig. 2䠅䚸☢໬┤ᚋ䛿୙ᆒ୍䛺ศᕸ䜢♧䛧䛶䛔䛯䜒䛾䛜䚸867 s ⛬ᗘ䛷☢໬䛾ᾘኻ䜢ព࿡䛩䜛ᆒ୍䛺㟁ὶศᕸ䛻཰᮰䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛷䛝䜛䚹ᚑ䛳䛶䚸Fig. 1 䛻䛚䛡䜛 70 A ㏻㟁᫬ t = 867 s 䛾☢⏺ศᕸ䛸䛭䜜௨እ䛾ศᕸ䛸䛾ᕪ䛿䚸☢໬䛾኱䛝䛥䜢⾲䛧䚸䛭䛾☢໬䛾ṧ䜛㟁ὶศᕸ䛛䜙☢
໬䛾䛺䛔୍ᵝ䛺ศᕸ䜢ᕪ䛧ᘬ䛟䛣䛸䛷䚸☢໬㟁ὶᡂศ䛾䜏䜢ᢳฟ䛷䛝䜛䛣䛸䛜䜟䛛䜛䠄Fig. 2 ᩳ⥺㡿ᇦ䠅䚹䛭䛾☢໬㟁ὶศᕸ䜢 Fig. 3 䛻䚸⮫⏺≧ែ䝰䝕䝹䛻ᇶ䛵䛔䛯⌮ㄽ᭤⥺䛸䛸䜒䛻♧䛩䚹䛣䛣䛷䚸⮫⏺≧ែ䛻䛚䛔䛶⥺ᮦෆ䛾㟁ὶᐦᗘ䛜 Jc 䛷ศᕸ䛩䜛䛣䛸䛛䜙䚸䛂㏻㟁㟁ὶ䛿ᖖఏᑟ㟁ὶ䛸䛧䛶୍ᵝ䛻ศᕸ䛩䜛䛃䛸௬ᐃ䛧䛯䚹䛣䛾௬ᐃ䛾ୗ䛻䛚䛡䜛☢໬㟁ὶ䛾ศᕸ䛿䚸㟁
ὶ㈇Ⲵ⋡䠄I / Ic䠅䛻䜘䛳䛶Ỵᐃ䛥䜜䜛䛜䚸 ᐃ⤖ᯝ䛸⌮ㄽ᭤⥺䜢ẚ㍑䛩䜛䛸䚸䛭䛾ศᕸ䛿䜘䛟୍⮴䛧䛶䛚䜚䚸☢໬䛾㏻㟁㟁ὶ౫Ꮡᛶ䜢⌮ㄽⓗ䛻⾲⌧䛷䛝䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹ྠᵝ䛻䚸␗䛺䜛㏻㟁᮲௳䛻䛚䛔䛶䜒☢໬㟁ὶ䜢ᢳฟ䛧䚸䜎䛯䚸Fig. 4 䛻♧䛩☢Ẽ䝰䞊䝯䞁䝖䛾᫬㛫ኚ໬䜒ᑟฟ䛧䛯䚹㔜䛽䛶♧䛩⌮ㄽ᭤⥺䛿䚸↓㏻㟁䛾 ᐃ⤖ᯝ䜘䜚ୖ㏙䛾㟁ὶ౫Ꮡᛶ䛾䝰䝕䝹䜢⏝䛔䛶ゎᯒ䛧䛯䜒䛾䛷䛒䜛䚹ᐇ ್䛸ゎᯒ⤖ᯝ䛜䜘䛟୍⮴䛧䛶䛔䜛䛣䛸䛛䜙䚸䝰䝕䝹䛻᫬㛫 t 䛾㡯䜢ຍ䛘䜜䜀䚸㟁ὶ༳ຍ᫬䛾☢
໬⦆࿴≉ᛶ䜒⌮ㄽⓗ䛻ண ྍ⬟䛷䛒䜛䛣䛸䛜䜟䛛䜛䚹௨ୖ䛾䜘䛖䛺☢໬䛾䝰䝕䝹໬䛾᳨ウ䛻䜘䜚䚸RE-123 ⥺ᮦ䜢⏝䛔䛯䝬䜾䝛䝑䝖䛾タィ䛸㐠⏝䛻㔜せ䛺▱ぢ䜢୚䛘䜛䜒䛾䛸ᮇᚅ䛥䜜䜛䚹㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻘㻌㻮㼦㻌㻔㼙㼀㻕㻌ஂᓥ㻌 ᏹᖹ䠈἟⏣㻌 ᑦ኱䠈ᮾᕝ㻌 ⏥ᖹ䠈ᑠ㔝ᑎ㻌 ඃኴ䠈㕥ᮌ㻌 ໶䠈஭ୖ㻌 ᫀ╬䠈ᮌ㡲㻌 㝯ᬸ䠄஑ᕞ኱Ꮫ䠅㻌㻴㻵㻿㻭㻶㻵㻹㻭㻌㻷㼛㼔㼑㼕䠈㻺㼁㻹㻭㼀㻭㻌㻺㼍㼛㼔㼕㼞㼛䠈㻴㻵㻳㻭㻿㻴㻵㻷㻭㼃㻭㻌㻷㼛㼔㼑㼕䠈㻻㻺㻻㻰㻱㻾㻭㻌㼅㼡㼠㼍䠈㻌㻿㼁㼆㼁㻷㻵㻌㼀㼍㼗㼡㼙㼕䠈㻵㻺㻻㼁㻱㻌㻹㼍㼟㼍㼥㼛㼟㼔㼕䠈㻷㻵㻿㻿㻌㼀㼍㼗㼍㼚㼛㼎㼡㻌㻔㻷㼥㼡㼟㼔㼡㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘䠖㼗㻚㼔㼕㼟㼍㼖㼕㼙㼍㻬㼟㼡㼜㼑㼞㻚㼑㼑㼟㻚㼗㼥㼡㼟㼔㼡㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌㻝㻜㻜㼀㼞㼍㼚㼟㼜㼛㼞㼠㻌㼏㼡㼞㼞㼑㼚㼠㻘
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第95回

2017年度秋季低温工学・超電導学会

1B-p05

Y 系線材特性㻾㻱㻮㻯㻻 ⥺ᮦ䛾๤㞳ᙉᗘಙ㢗ᛶホ౯㻔㻟㻕㻌䇷ప ⑂ປ≉ᛶホ౯䇷㻌㻱㼢㼍㼘㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㼐㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㼟㼠㼞㼑㼚㼓㼠㼔㻌㼞㼑㼘㼕㼍㼎㼕㼘㼕㼠㼥㻌㼒㼛㼞㻌㻾㻱㻮㻯㻻㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㻔㻟㻕㻌㻙㻌㻲㼍㼠㼕㼓㼡㼑㻌㼠㼑㼟㼠㼟㻌㼒㼛㼞㻌㻾㻱㻮㻯㻻㻌㼏㼛㼍㼠㼑㼐㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼍㼠㻌㼘㼛㼣㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㻙㻌Ṋ⸨㻌 ⩧࿃㻘㻌 ⸨⏣㻌 ┿ྖ㻘㻌 బ⸨㻌 ኱ᶞ㻘㻌 㣤ᓥ㻌 ᗣ⿱㻘㻌 ┤Ụ㻌 㑥ᾈ㻌 䠄䝣䝆䜽䝷䠅㻌㻹㼁㼀㻻㻌㻿㼔㼛㼓㼛㻘㻌㻲㼁㻶㻵㼀㻭㻌㻿㼔㼕㼚㼖㼕㻘㻌㻿㻭㼀㻻㻌㻴㼕㼞㼛㼗㼕㻘㻌㻵㻵㻶㻵㻹㻭㻌㼅㼍㼟㼡㼔㼕㼞㼛㻘㻌㻺㻭㻻㻱㻌㻷㼡㼚㼕㼔㼕㼞㼛㻌㻔㻲㼡㼖㼕㼗㼡㼞㼍㻌㻸㼠㼐㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼟㼔㼛㼓㼛㻚㼙㼡㼠㼛㻬㼖㼜㻚㼒㼡㼖㼕㼗㼡㼞㼍㻚㼏㼛㼙㻌㻌㻌㻝䠊 䛿䛨䜑䛻㻌䛺䛔䠊䛭䛣䛷䠈1 䜢ኚᩘ䛸䛧䛯䝣䜱䝑䝔䜱䞁䜾䜢 㻲㼕㼓㻚㻌 㻝 䛾୍ḟ䝕㻾㻱㻮㻯㻻 ⥺ᮦ䛾⑂ປᣲື䜢ᢕᥱ䛩䜛䛣䛸䛿ᛂ⏝〇ရ䛾㛗ᮇ䞊䝍䛻ᑐ䛧㐺⏝䛩䜛䛣䛸䛷䠈㻣㻣㻌㻷 䛾⑂ປಀᩘ 1 䜢ồ䜑䜛䛣䛸䜢ಙ㢗ᛶ䜢☜❧䛩䜛ୖ䛷㔜せ䛸䛺䜛䠊๓ሗ㼇㻝㼉䛷䛿䝉䝷䝭䝑䜽䝇ⓗヨ䜏䛯䠊ゎᯒ䛾ヲ⣽䛿ᙜ᪥Ⓨ⾲䛩䜛䠊㻌ほⅬ䛛䜙ᐊ 䛷䛾ྛ✀⑂ປヨ㦂䜢ᐇ᪋䛧䠈୍⯡ⓗ䛺䝉䝷䝭䝑㻌䜽䝇䛾⑂ປᣲື㼇㻞㼉䛸▩┪䛾䛺䛔⤖ᯝ䜢ᚓ䛯䠊๓ሗ䛿ᐊ 䛻䛚䛡䜛ヨ㦂䛰䛳䛯䛜䠈⥺ᮦ䛜ᐇ㝿䛻౑⏝䛥䜜䜛⎔ቃ䛿ప 䛸䛺䜛䠊䝉䝷䝭䝑䜽䝇䛾୍⯡ㄽ䛻ᚑ䛖䛸䠈ప 䛷䛿䛝⿣ᡂ㛗䛾ᶵືຊ䛻䛺䜛Ỉศ䛸䛾໬Ꮫ཯ᛂ䛜䛝䜟䜑䛶㐜䛟䛺䜛䛯䜑䠈⑂ປ䛻 䜘 䜛 ᙉ ᗘ ప ୗ 䛜 䜋 䛸 䜣 䛹 ⏕ 䛨 䛺 䛔 䛸 ゝ 䜟䜜 䛶 䛔 䜛 㼇㻞㼉 䠊㻾㻱㻮㻯㻻 ⥺ᮦ䛻䛴䛔䛶䜒䛣䛾▱ぢ䛸ྠᵝ䛛䛻䛴䛔䛶䠈䛣䜜䜎䛷ሗ࿌䛥䜜䛯౛䛜Ꮡᅾ䛧䛺䛔䛣䛸䛛䜙௒ᅇㄪᰝ䜢ᐇ᪋䛧䛯䠊ලయⓗ䛻䛿䠈ᾮయ❅⣲୰㻔㻸㻺㻞㻕䛷䜰䞁䝡䝹๤㞳ヨ㦂䛻䜘䜛୍ᐃ㈇Ⲵ㏿ᗘヨ㦂㻔ື⑂ປヨ㦂㻕䜢ᐇ᪋䛧䠈ప 䛻䛚䛡䜛 㻾㻱㻮㻯㻻⥺ᮦ䛾⑂ປᣲື䜢ㄪᰝ䛧䛯䠊㻌㻌㻟䠊 ᐇ㦂⤖ᯝ䛚䜘䜃ゎᯒ㻌㻲㼕㼓㻚㻌㻝 䛻ྛ㏿ᗘ᮲௳䛷ヨ㦂䛧䛯ᙉᗘ䛾䝽䜲䝤䝹䝥䝻䝑䝖䜢♧䛩䠊⦪㍈䛿⣼✚◚ቯ☜⋡䛷䠈ᶓ㍈䛿◚᩿ᙉᗘ䜢⾲䛧䛶䛔䜛䠊ప⣼✚◚ቯ☜⋡㒊ศ䛷䛿䜔䜔䜀䜙䛴䛝䛜䜏䜙䜜䜛䜒䛾䛾䠈㧗⣼✚◚ቯ☜⋡㒊䛷䛿䜘䛟୍⮴䛧䛶䛔䜛䠊ప⣼✚◚ቯ☜⋡㒊ศ䛷䛾䜀䜙䛴䛝䛿䠈௒ᚋ䝕䞊䝍Ⅼᩘ䜢ቑ䜔䛧䛶ᣲື䜢☜ㄆ䛩䜛ணᐃ䛷䛒䜛䠊㻌
㻲㼕㼓㻚㻌 㻞 䛻ᛂຊ㈇Ⲵ㏿ᗘ䛸௦⾲◚᩿ᙉᗘ䛾୧ᑐᩘ䝥䝻䝑䝖䜢♧䛩䠊ᐊ 䛾⤖ᯝ㼇㻝㼉䛸௒ᅇ ᐃ䛧䛯 㻣㻣㻌㻷 䛾⤖ᯝ䜢䝥䝻䝑䝖䛧䛯䚹⦪㍈䛜ᛂຊ㈇Ⲵ㏿ᗘ䛷䠈ᶓ㍈䛜௦⾲◚᩿ᙉᗘ䛷䛒䜛䠊௦⾲◚᩿ᙉᗘ䛿䠈㻲㼕㼓㻚㻌 䠍䛾㧗⣼✚◚ቯ☜⋡㒊ศ䜢䝽䜲䝤䝹㛵ᩘ䛻᭱ᑠ஧஌ἲ䛷䝣䜱䝑䝔䜱䞁䜾䛧䛶ồ䜑䛯ᑻᗘಀᩘ ı 䛾್䜢⏝䛔䛯䠊ᐊ 䛷䛿㏿ᗘ䛜ቑຍ䛩䜛䛻ᚑ䛔䠈௦⾲ᙉᗘ䛜ቑຍ䛧䛶䛔䜛䠊୍᪉䠈㻣㻣㻌 㻷 䛾ሙྜ䛿᫂☜䛻ᛂຊ㈇Ⲵ㏿ᗘ౫Ꮡᛶ䛜䜏䜙䜜䛺䛔䛣䛸䛛䜙䠈ᐃᛶⓗ䛻䛿ᐊ 䜘䜚䜒 1 ್䛜㧗䛟䛺䜛䛣䛸䛜♧၀䛥䜜䜛䠊䛧䛛䛧䠈㻔㻝㻕ᘧ䜢 㻲㼕㼓㻚㻞 䛾ᐊ 䛾⤖ᯝ䛻㐺⏝䛩䜛䛸䠈1㻩㻝㻣㻚㻢 䛾್䛜ᚓ䜙䜜䜛䛜䠈㻣㻣㻌㻷 䛾⤖ᯝ䛻䛴䛔䛶䛿༢ㄪ䛺᣺䜛⯙䛔䛷䛺䛔䛣䛸䛛䜙䠈䛖䜎䛟 1 ್䛜ồ䜑䜛䛣䛸䛜䛷䛝㻌㻲㼕㼓㻚㻌㻝㻌㼃㼑㼕㼎㼡㼘㼘㻌㼜㼘㼛㼠㻌㼛㼒㻌㼐㼑㼘㼍㼙㼕㼚㼍㼠㼕㼛㼚㻌㼟㼠㼞㼑㼚㼓㼠㼔㻌㼍㼠㻌㼑㼍㼏㼔㻌㼟㼠㼞㼑㼟㼟㻌㼘㼛㼍㼐㼕㼚㼓㻌㼞㼍㼠㼑㻌㼎㼥㻌㼍㼚㼢㼕㼘㻌㼠㼑㼟㼠㼟㻌㼕㼚㻌㻣㻣㻌㻷㻚㻌㻌ln α㻞䠊 ᐇ㦂᪉ἲ㻌ホ౯䛻౑⏝䛧䛯⥺ᮦ䛿 㻣㻡㻌 P㼙 ཌ䛾 㻴㼍㼟㼠㼑㼘㼘㼛㼥㼹 ᇶᯈୖ䛻㻵㻮㻭㻰㻙㻹㼓㻻 ᒙ䜢ྵ䜐୰㛫ᒙ䛸 㻼㻸㻰 䛻䜘䜛 㻳㼐㻮㻯㻻 ᒙ䠄⭷ཌ㻌䡚㻌 㻞㻌P㼙䠅䠈㻭㼓 ಖㆤᒙ䠈∦ഃ 㻞㻜㻌P㼙 ཌ䛾 㻯㼡 䜑䛳䛝ᒙ䜢ᙧᡂ䛧䛯 㻡㻌 㼙㼙 ᖜ䛾⥺ᮦ䛷䛒䜛䠊ື⑂ປヨ㦂䛾䝃䞁䝥䝹䛿 㻳㼐㻮㻯㻻ᒙഃ䛾⥺ᮦ⾲㠃୰ኸ䛻䠈㻠㽢㻤㻌 㼙㼙 䛾▴ᙧ䜰䞁䝡䝹䜢䛿䜣䛰䛷᥋╔䛧⏝ព䛧䛯䠊ᘬᙇヨ㦂䛿ᓥὠ〇సᡤ〇䛾ᘬᙇヨ㦂ᶵ䜢⏝䛔䛶ᐇ᪋䛧䛯䠊䝃䞁䝥䝹䜢ᘬᙇヨ㦂䛻ྲྀ䜚௜䛡䛯䛾䛱䠈㻸㻺㻞 䜢ᾐₕ䛧䛶෭༷䛧䛯䠊㻌ື⑂ປヨ㦂䛿ᙉᗘ䛾ᛂຊ㈇Ⲵ㏿ᗘ౫Ꮡᛶ䜢ほ 䛩䜛ヨ㦂䛷䛒䜚䠈䠄㻝䠅ᘧ䛾䜘䛖䛻ᛂຊ㈇Ⲵ㏿ᗘ Į 䛸௦⾲◚᩿ᙉᗘ ıF 䛾୧ᑐᩘ䝥䝻䝑䝖䛾ഴ䛝䛛䜙⑂ປಀᩘ 1 䛜ᑟฟ䛷䛝䜛㼇㻞㼉䠊㻌 ߙ ൌ ሺܰ ൅ ͳሻ  ߪ௖ ൅ ‫ܥ‬㻌㻌㻔㻝㻕㻌௒ᅇ䛿๓ሗ㼇㻝㼉䛸䜋䜌ྠᵝ䛾ᛂຊ㈇Ⲵ㏿ᗘ Į㻌 㻩㻌 㻜㻚㻜㻡㻌 㻙㻌 㻝㻌㻹㻼㼍㻛㼟㼑㼏 䛾᮲௳䛷䝔䞊䝥ᆶ┤᪉ྥ䛻ᘬᙇ䜚䠈䛭䜜䛮䜜䛾᮲௳䛷䛾◚᩿ᛂຊߪ䜢 ᐃ䛧䛯䠊ྛ㏿ᗘ᮲௳䛷ᩘ༑ಶ䛾䝃䞁䝥䝹䜢ヨ㦂䛧䠈⤫ィⓗ䛺ฎ⌮䜢⾜䛖䛣䛸䛷䠈ึᮇᙉᗘ䛾䜀䜙䛴䛝䛸䠈ᙉᗘ䛾㈇Ⲵ㏿ᗘ౫Ꮡᛶ䜢ศ㞳䛧䛯䠊㻌
㻌

1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5

LN2
RT

3.5

3.6

3.7
3.8
ln σc

3.9

4.0

㻌

㻲㼕㼓㻚㻌㻞㻌㻰㼥㼚㼍㼙㼕㼏㻌㼒㼍㼠㼕㼓㼡㼑㻌㼠㼑㼟㼠㻌㼞㼑㼟㼡㼘㼠㼟㻌㼣㼕㼠㼔㻌㼏㼛㼚㼟㼠㼍㼚㼠㻌㼢㼑㼞㼠㼕㼏㼍㼘㻌㼟㼠㼞㼑㼟㼟㻌㼢㼑㼘㼛㼏㼕㼠㼥㻌㼍㼜㼜㼘㼕㼑㼐㻌㼠㼛㻌㼍㻌㻾㻱㻮㻯㻻㻌㼠㼍㼜㼑㻌㼍㼠㻌㻣㻣㻌㻷㻚㻌㻌ㅰ㎡㻌
䛣䛾ᡂᯝ䛾୍㒊䛿䠈ᅜ❧◊✲㛤Ⓨἲே᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤Ⓨᶵᵓ㻔㻺㻱㻰㻻㻕䛾ጤクᴗົ䛾⤖ᯝᚓ䜙䜜䛯䜒䛾
䛷䛒䜛䠊㻌
㻌
ཧ⪃ᩥ⊩㻌
㼇㻝㼉㻌 㻿㻚㻌 㻹㼡㼠㼛㻘㻌 㼑㼠㻌 㼍㼘㻚㻘㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌 㻯㻿㻿㻶㻌 㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌 㼂㼛㼘㻚㻌㻥㻠㻌㻔㻞㻜㻝㻣㻕㻌㼜㻚㻝㻣㻜㻚㻌㼇㻞㼉㻌㻰㻚㻌㻹㼡㼚㼦㻘㻌㼑㼠㻌㼍㼘㻚㻘㻌㻯㼑㼞㼍㼙㼕㼏㼟㻦㻌㻹㼑㼏㼔㼍㼚㼕㼏㼍㼘㻌㻼㼞㼛㼜㼑㼞㼠㼕㼑㼟㻘㻌㻲㼍㼕㼘㼡㼞㼑㻌㻮㼑㼔㼍㼢㼕㼛㼡㼞㻘㻌㻹㼍㼠㼑㼞㼕㼍㼘㼟㻌㻿㼑㼘㼑㼏㼠㼕㼛㼚㻌㻿㼜㼞㼕㼚㼓㼑㼞㻌㼂㼑㼞㼘㼍㼓㻌㻔㻝㻥㻥㻥㻕㻚㻌― 33 ―

第95回

2017年度秋季低温工学・超電導学会

1B-p06

Y 系線材プロセス (2)

5( ⣔㉸ఏᑟయࡢ㉸ఏᑟ≉ᛶ࡟ᑐࡍࡿᮏ㉁ⓗ࡞ &D ࢻ࣮ࣉຠᯝ,QWULQVLFHIIHFWVRI&DGRSLQJRQVXSHUFRQGXFWLQJSURSHUWLHVRI5(EDVHGVXSHUFRQGXFWRUV㻌ୗᒣ㻌 ῟୍䚸㰺⸨㻌 㝧኱䚸ඖᮌ㻌 ㈗๎䠄㟷Ꮫ኱㸧ࠊᇼ஭⁠ ி኱ 㻌
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ヨᩱ䜢ྜᡂ䛧䛯䛸䛣䜝䚸༢┦ヨᩱ䛜ᚓ䜙䜜䜛 &D ⤌ᡂᇦ䛜ᗈ䛜䛳䛯䚹)LJ  䛻ᵝ䚻䛺௙㎸⤌ᡂ䛾 &D 䝗䞊䝥 < 䛾 =)& ☢

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5( 5(%D&X2\ ࡞࡝ࠊ5(%D&X2 ⣔ࡢ↝⤖యࡢ◊✲
ࢆ㏻ࡌ࡚ࠊ᪂ࡋ࠸ᴫᛕࡢ㧗 ㉸ఏᑟከ⤖ᬗᮦᩱࡢ๰ฟࢆ

0  0  . a ௜㏆䛾⢏⏺䛾୙ྍ㏫ ᗘ䛻ᑐᛂ䛩䜛☢໬䛾ᢡ䜜᭤䛜䜚䛜䚸%D ⤌ᡂ䛾ῶᑡ䛸䛸䜒䛻⣔⤫ⓗ䛻ୖ᪼䛧䛶䛔┠ᣦࡋ࡚࠸ࡿࠋࡇࢀࡲ࡛ࡢ◊✲ࡼࡾࠊᚑ᮶ሗ࿌ࡉࢀ࡚ࡁࡓ
5( ↝⤖యࡢᴟࡵ࡚ప࠸⢏㛫㒊ࡢ -F ࡣࠊ࣌ࣞࢵࢺᡂᆺ

䜛䛣䛸䛜䜟䛛䜛䚹䜎䛯ⓑᢤ䛝䛾䝅䞁䝪䝹䛷⾲䛧䛯㧗ᅽ㓟⣲୰↝ᡂ䜢ຍ䛘䛯ሙྜ䛿 &D ⤌ᡂ䛜  䛷䜒୙ྍ㏫ ᗘ䛜㧗䛟䚸㉸᫬ࡢᅽຊࢆ㧗ࡵࡿࡇ࡜࡟ࡼࡿ㧗ᐦᗘ໬ࠊ5( ࡢ %D ࢧ࢖ࢺ࡬ࡢ㒊ศ⨨᥮ࢆᢚไࡍࡿ↝⤖ᚋࡢ㑏ඖ࣏ࢫࢺ࢔ࢽ࣮ࣝࠊఏᑟ㌿⛣䜒ẚ㍑ⓗ㗦䛔䚹䛣䛾䛖䛱 [  䛾ヨᩱ䛾ṧ␃☢ሙᐃ䛛䜙ぢ✚䛳䛯 . 䛷䛾⢏㛫 -F 䛿 N$FP 䛸┦ᑐᐦᗘ

ࢡࣛࢵࢡⓎ⏕ࢆᢚไࡍࡿ 5( ࡢᚤ㔞ῧຍࠊ㓟⣲ࡢ࣮࢜ࣂ࣮ࢻ࣮ࣆࣥࢢࠊ࠾ࡼࡧ 5( ࢧ࢖ࢺ࡬ࡢ &D ࡢ㒊ศ⨨᥮࡟⛬ᗘ䛷䛒䜛䛻䜒䛛䛛䜟䜙䛪㧗䛔್䛷䛒䛳䛯䚹㧗ᅽ㓟⣲㞺ᅖẼ୰䛷䛾↝ᡂ䛿 &D 䜢ྵ䜎䛺䛔 < 䛷䛿㉸ఏᑟ≉ᛶ䚸≉ࡼࡗ࡚኱ࡁࡃᨵၿࡍࡿࡇ࡜ࡀࢃ࠿ࡗ࡚ࡁ࡚࠸ࡿࠋ&D ⨨᥮ࡣ࣮࣍ࣝࢻ࣮ࣉࢆక࠺ࡇ࡜࠿ࡽࠊDE 㠃ࡢഴゅࡀ኱ࡁ࡞⢏䛻⢏㛫⤖ྜ䜢ⴭ䛧䛟ຎ໬䛥䛫䛯䛜䚸௒ᅇ䛾⤖ᯝ䛿㏫䛾ഴྥ䜢♧䛧䛶䛚䜚⯆࿡῝䛔䚹䜎䛯䚸䛔䛪䜜䛾ヨᩱ䛾 7䠿 RQVHW 䜒 a.

⏺ࡢ -F ࡸ F ㍈᪉ྥࡢᑟ㟁ᛶࢆᨵၿࡋ⤖ᯝⓗ࡟ከᵝ࡞᥋ྜゅࡢ⢏⏺ࡢ -F ࡸ↓㓄ྥ↝⤖య࡛ほ ࡉࢀࡿ୙ྍ㏫☢ሙࢆ䛸㧗䛟䚸%D Ḟᦆ䛜䛺䛔 < 䛷䛿 &D 䝗䞊䝥㔞䛾ቑຍ䛸䛸䜒䛻
7F 䛜༢ㄪ䛻పୗ䛩䜛䛣䛸䛸᫂䜙䛛䛻␗䛺䜛䚹ㅮ₇䛷䛿 <

ᨵၿࡍࡿࠋࡋ࠿ࡋࠊ&X2 㠃ࡢᵓ㐀ࡢ஘ࢀࡀຍࢃࡿࡇ࡜࠿
ࡽ 5( ࡛ࡣ 7F ࡢ᭱㧗್ࡀᚲࡎపୗࡋࠊࡉࡽ࡟୰㍍ᕼᅵ

< 䜢ྵ䜑䛶 &D 䝗䞊䝥ຠᯝ䜢ᵝ䚻䛺ゅᗘ䛛䜙㆟ㄽ䛩䜛䚹࠙ㅰ㎡ࠚᮏ◊✲ࡢ୍㒊ࡣࠊ-67࣭◊✲ᡂᯝ᭱㐺ᒎ㛤ࣉࣟࢢ࣒ࣛ $67(3 ࢫࢸ࣮ࢪⅠ  ࡢຓᡂࢆཷࡅ࡚ᐇ᪋ࡋࡓࡶࡢ
࡛࠶ࡿࠋ㢮ࡢ 5( ࡛ࡣ &D ࡀ %D ࢧ࢖ࢺ࡟㒊ศ⨨᥮ࡋࡸࡍࡃࠊ㉸ఏᑟ≉ᛶࡀຎ໬ࡍࡿࡇ࡜ࡶ▱ࡽࢀ࡚࠸ࡿࠋ᭱㏆ࡢᡃࠎࡢ◊✲ࡣࠊྠᵝ࡞ %D ࢧ࢖ࢺ࡬ࡢ &D ⨨᥮ࡀࠊ< ࡞࡝࢖༙࢜ࣥᚄࡀẚ㍑ⓗᑠࡉ࡞ 5( ࡢሙྜ࡛ࡶ㉳ࡇࡾ࠺ࡿࡇ࡜ࢆ
♧၀ࡋ࡚࠸ࡿࠋ୍᪉ࠊ࢟ࣕࣜ࢔ࡢ࢔ࣥࢲ࣮ࢻ࣮ࣉ≧ែ࡟࡞ࡾࡸࡍ࠸ 5( ࡟࠾࠸࡚ࡣ &D ⨨᥮࡟ࡼࡿ࣮࣍ࣝࢻ࣮ࣉ
ࡢຠᯝࡣ㉸ఏᑟ≉ᛶࡢᨵၿ࡟⌧ࢀࠊẚ㍑ⓗᐜ᫆࡟ . ⣭ࡢヨᩱࡀྜᡂ࡛ࡁࡿࠋࡋ࠿ࡋࠊ5( ↝⤖య࡛ࡣⰋዲ࡞⢏㛫⤖ྜࡀᮍࡔᐇ⌧࡛ࡁ࡚࠸࡞࠸ࠋ௨ୖࡢ⫼ᬒࡢࡶ࡜ࠊᮏ◊✲࡛ࡣ 5( ⣔㉸ఏᑟయ࡟ᑐࡍࡿᮏ㉁ⓗ࡞ &D ࢻ࣮ࣉຠᯝࢆࠊ
≉࡟㔠ᒓ⤌ᡂไᚚ࡟ὀពࡋ࡞ࡀࡽㄪ࡭࡚࠸ࡿࠋ㸬ᐇ㦂<䚸<䚸< <%D&X2 䛾↝⤖య䛿 <2ࠊ%D&2ࠊ
&X2 ࢆฟⓎཎᩱ࡜ࡋࠊ኱Ẽ୰ࡲࡓࡣ▼ⱥᑒ⟶ෆ࡛ࡢ↝ᡂ࡟ࡼࡾྜᡂࡋࡓࠋ&D ࡀ < ࢧ࢖ࢺࡔࡅ࡛࡞ࡃ %D ࢧ࢖ࢺࡶ⨨᥮ࡍࡿྍ⬟ᛶࢆ⪃៖ࡋࠊ%D ࢧ࢖ࢺࢆḞᦆࡉࡏࡓ < ࡶస〇ࡋࡓࠋ↝⤖ᚋࡢヨᩱࡣ᭱ᚋ࡟ࠊ㧗 ᚤ㔜㔞⇕ኳ⛗࡛㔜㔞ࢆ ࡾ࡞ࡀࡽ㓟⣲Ẽὶ୰࡛ & ࠿ࡽ & ࡲ࡛  ᫬㛫௨ୖ࠿ࡅ࡚ᚎ෭ࡋࡓࠋヨᩱࡢᵓᡂ┦ࡣ⢊ᮎ ;5'ࠊᚤ⣽⤌⧊ࡣ 6(0ࠊ☢໬≉ᛶࡣ 648,' ☢᮰ィ࡟ࡼࡾㄪ࡭ࡓࠋ
㸬⤖ᯝ࡜⪃ᐹ< 䛾 < 䝃䜲䝖䛾 &D 䛷㒊ศ⨨᥮㔞䜢ኚ䛘䛯ฟⓎ⤌ᡂ䛜)LJ  =)&PDJQHWL]DWLRQFXUYHVXQGHU2HRI&DGRSHG
<VLQWHUHGEXONVZLWKYDULRXVQRPLQDOFRPSRVLWLRQV― 34 ―

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Y 系線材プロセス (2)㼂㼍㼜㼛㼞㻙㻸㼕㼝㼡㼕㼐㻙㻿㼛㼘㼕㼐 ᡂ㛗ἲ䜢⏝䛔䛶స〇䛧䛯 㻿㼙㻮㼍㻞㻯㼡㻟㻻㼥 ⥺ᮦ䛾㻌ᡂ⭷㏿ᗘ䛸㉸ఏᑟ≉ᛶ㻌㻰㼑㼜㼛㼟㼕㼠㼕㼛㼚㻌㻾㼍㼠㼑㻌㼍㼚㼐㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㻼㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼛㼒㻌㻿㼙㻮㼍㻞㻯㼡㻟㻻㼥㻌㻯㼛㼍㼠㼑㼐㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㻲㼍㼎㼞㼕㼏㼍㼠㼑㼐㻌㼎㼥㻌㼂㼍㼜㼛㼞㻙㻸㼕㼝㼡㼕㼐㻙㻿㼛㼘㼕㼐㻌㻳㼞㼛㼣㼠㼔㻌㼀㼑㼏㼔㼚㼕㼝㼡㼑㻌㻌ྜྷ⏣ 㝯䠈ఀᮾᬛᐶ, ⏣ᑼಟஓ, ᅵᒇ㞝ྖ, ୍㔝♸ு䠄ྡ኱䠅; ୍℩ ୰䠄㟁୰◊䠅
YOSHIDA Yutaka䠈 ITO Tomohiro, TAJIRI Shuya, TUCHIYA Yuji, ICHINO Yusuke(Nagoya Univ.); ICHINOSE Ataru(CERIPI)
E-mail: yoshida@nuee.nagoya-u.ac.jp㻝䠊䛿䛨䜑䛻
REBa2Cu3Oy(RE123, RE = Rare Earth)㧗 ㉸ఏᑟ⥺ᮦ䛾〇㐀㛤Ⓨ䛻㛵䛧䛶䚸㧗㏿໬䞉኱㠃✚ᆒ㉁໬䞉㧗ᛶ⬟໬䛺䛹䛾
ほⅬ䛛䜙ከ䛟䛾◊✲ᡂᯝ䛜ሗ࿌䛥䜜䛶䛝䛶䛔䜛䚹77 䠧ཬ䜃ప䛷䛾☢ሙ୰㧗ᛶ⬟໬䛾ほⅬ䛛䜙䛿䚸BaMO3 䝘䝜䝻䝑䝗䛺䛹䛾ேᕤ䝢䞁ᮦᩱ䛻௦⾲䛥䜜䜛ᡂᯝ䛜ሗ࿌䛥䜜䛶䛔䜛䚹୍᪉䚸㧗㏿໬䛻㛵䛧䛶䛿䚸౛䛘䜀 PLD ᢏ⾡䛷䛿䚸ᩘⓒ H䡖䛺䛹䛾㧗࿘Ἴ䝺䞊䝄䜢⏝䛔䛯⥺ᮦస〇䛺䛹䛜ሗ࿌䛥䜜䛶䛔䜛䚹
ᡃ䚻䛿䚸RE123 ⥺ᮦ䜢㧗ရ㉁䛛䛴㧗㏿䛻స〇䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛶䚸ᅗ䠍䛷♧䛩䜘䛖䛺ⷧ䛔ᾮᒙ䜢ᡂ㛗䛾㏵୰䛻௓ᅾ䛥䛫䛯 Vapor-Liquid-Solid ἲ䜢ᥦ᱌䛧䛶䛝䛯䚹RE123 ⷧ⭷䛿ẚ㍑ⓗప䛔ᡂ⭷ ᗘ䛛䜙␲ఝᾮయᒙ䛜௓ᅾ䛧䛯 VLS ᡂ㛗䛷ⷧ⭷䛜ᡂ㛗䛧䛶䛔䜛䛣䛸䛜ሗ࿌䛥䜜䛶䛚䜚[1]䚸䛣䛾䜘䛖䛺 VLS ᡂ㛗ἲ䛿Ḟ㝗䛾㠀ᖖ䛻ᑡ䛺䛔ⷧ⭷䞉⥺ᮦ䛾స〇 [2]䛺䛹䛜☜ㄆ䛥䜜䛶䛔䜛䚹䜎䛯䚸ᾮ┦䜶䝢䝍䜻䝅䞊ἲ䜔 VLS ἲ䛺䛹䚸ᾮ┦䜢௓ᅾ䛩䜛ᡂ㛗᪉ἲ䛷䛿[3]䚸୍⯡ⓗ䛺Ẽ┦ᡂ㛗䛻ẚ䜉ᡂ㛗㏿ᗘ䛾ྥୖ䛜ᮇᚅ䛥䜜䜛䛣䛸䛜▱䜙䜜䛶䛔䜛䚹
ᮏⓎ⾲䛷䛿䚸RE123 ⥺ᮦ䛾㧗㏿స〇䛸䛧䛶 VLS ᡂ㛗ἲ䛻╔┠䛧䚸IBAD ᇶᯈୖ VLS-RE123 ⥺ᮦ䛾స〇㏿ᗘ䛾ྥୖ䜔☢ሙ୰㧗ᛶ⬟໬䛻䜐䛡䛶ேᕤ䝢䞁ᑟධ䛺䛹䛾ㄢ㢟䜢᳨ウ䛩䜛䚹㻞䠊ᐇ㦂᪉ἲ
VLS-RE123 ⥺ᮦ䛿䚸IBAD-MgO ᇶᯈୖ䛻 PLD ἲ䜢⏝䛔䛶స〇䛧䛯䚹䜎䛪䚸CeO2 ୰㛫ᒙୖ䛻 Solid layer 䛸䛧䛶䚸RE123ⷧ⭷䜢ᇶᯈ ᗘ Ts = 900ºC䚸㓟⣲ศᅽ PO2 = 400 mTorr 䛷స〇䛧䛯䚹ḟ䛻䚸PO2 = 1 Torr 䛻䛧䛶䚸ᇶᯈୖ䛷⼥ゎ䛧䛶ᾮ┦䛸䛺䜛 Ba3Cu7O10 ∦䜢஌䛫䛯 RE123 䝍䞊䝀䝑䝖䜢⏝䛔䛶䚸Liquid
layer ཬ䜃 RE123 ཎᩱ䜢⧞䜚㏉䛧౪⤥䛧䛯䚹㻟䠊ᐇ㦂⤖ᯝཬ䜃⪃ᐹ
Fig.2 䛷♧䛩䜘䛖䛺 VLS-Y123 ⥺ᮦ䛾᩿㠃 TEM ෗┿䛛䜙ほᐹ䛥䜜䜛䜘䛖䛻䚸Ḟ㝗䛜㠀ᖖ䛻ᑡ䛺䛟㧗ရ㉁䛺ⷧ⭷䛷䛒䜛䛣䛸䛜䜟䛛䜛䚹䛣䛾䜘䛖䛻䚸㔠ᒓᇶᯈୖ䛻✚ᒙḞ㝗䛾㠀ᖖ䛻ᑡ䛺䛔㧗ရ㉁䛺ⷧ⭷䜢స〇䛧䛯ሗ࿌౛䛿䛒䜎䜚䛺䛟䚸Liquid
layer 䜢௓䛧䛯䛣䛸䛻䜘䜚 VLS ᡂ㛗䛻䜘䜛䜒䛾䛸⪃䛘䛶䛔䜛䚹
Fig. 3 䛻 PLD ἲཬ䜃 VLS ᡂ㛗ἲ䛻䛚䛡䜛␗䛺䜛ᡂ㛗㏿ᗘ䛷స〇䛧䛯 Sm123 ⷧ⭷䛾⮫⏺ ᗘ Tc 䛾ẚ㍑䜢♧䛩䚹䛺䛚䚸䛣䛣䛷⏝䛔䛯 PLD ⭷䛿 VLS ⭷స〇᮲௳䛸␗䛺䜚䚸㓟⣲ศᅽ
PO2 = 400 mTorr 䛷స〇䛧䛯䜒䛾䛷䛒䜛䚹䛭䛾⤖ᯝ䚸PLD ἲ䛷

Fig.1 Schematic drawing of a Vapor-Liquid-Solid growthmode.

Fig. 2 Cross-sectional TEM image of the Y123 matrix
on CeO2-buffered IBAD-MgO substrate fabricated by
VLS growth method.
స〇䛧䛯ヨᩱ䛷䛿䚸ᡂ㛗㏿ᗘ䛾ྥୖ䛻క䛔䚸Tc 䛜పୗ䛩䜛ഴྥ䛻䛒䜚䚸X ⥺ᅇᢡ䛛䜙 a ㍈┦䛺䛹䛾ᡂ㛗䛸㛵ಀ䛜䛒䜛䛸᥎ᐹ䛧䛶䛔䜛䚹୍᪉䛷䚸VLS ᡂ㛗ἲ䛷స〇䛧䛯ヨᩱ䛻䛚䛔䛶䛿䚸
PLD ἲ䛺䛹䛻ẚ䜉㧗㏿ᡂ⭷䛧䚸a ㍈ᡂ㛗䛺䛹䛜☜ㄆ䛥䜜䛺䛔㧗䛔 Tc 䜢᭷䛩䜛⥺ᮦ䛜స〇䛷䛝䜛䛣䛸䛜䜟䛛䜛䚹௨ୖ䜘䜚䚸
PLD ἲ䛾䛸䛝 Tc > 90 K 䛾≉ᛶ䛾ᚓ䜙䜜䜛㝈⏺䛾ᡂ⭷㏿ᗘ䛿
24.9 nm/min 䛷䛒䜛䛾䛻ᑐ䛧䚸VLS ᡂ㛗ἲ䜢⏝䛔䜛䛸 137.3
nm/min 䜎䛷㧗㏿໬䛷䛝䜛䛣䛸䛜ᐇド䛥䜜䚸VLS ᡂ㛗ἲ䛿RE123 ⥺ᮦ䛾㧗㏿స〇䛻㐺䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹ㅰ㎡◊ ✲ 䛾 ୍ 㒊 䛿 䚸 ⛉ ◊ ㈝ ⿵ ຓ 㔠 (15H04252 䚸 15K14301 䚸
15K14302䚸16H04512䚸16K20898)䚸JST-ALCA䚸ཬ䜃ྡ኱⏘⥲◊䜰䝷䜲䜰䞁䝇஦ᴗ䛾ຓᡂ䜢ཷ䛡䛶ᐇ᪋䛧䛯䜒䛾䛷䛒䜛䚹ཧ⪃ᩥ⊩
1. Y. Yoshida et al.:Appl. Phys. Lett., 69, (1996) pp.845-847
2. K. S. Yun et al.: Physica C 381 (2002) 1202.
3.
౛䛘䜀㻌 Y. Yamada et al.: J. Crystal Growth, 167, (1996)
pp.566-569

Fig. 3 Comparison of growth rate dependence of Tc
fabricated by conventional PLD method and VLS growthmethod.

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2017年度秋季低温工学・超電導学会

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Y 系線材プロセス (2)㔠ᒓᇶయୖ䛻䛚䛡䜛䝣䝑⣲䝣䝸䞊㻹㻻㻰 ἲ 㼅㻝㻞㻟 ⷧ⭷䜈䛾䝝䝻䝀䞁ῧຍຠᯝ㻌
Effects of halogen addition for fluorine-free MOD processed Y123 thin films
deposited on metal substratesụ⏣㻌 ࿘ᖹ㻘㻌 ඖᮌ㻌 ㈗๎㻘㻌 ୰ᮧ᪂୍㻘㻌 ୗᒣ㻌 ῟୍㻌 㻔㟷Ꮫ኱㻕㻧㻌 ᮏ⏣㻌 ඖẼ㻘㻌 Ọ▼㻌 ❳㉳㻌 㻔ఫ཭㟁ᕤ㻕㻌
IKEDA Shuhei, MOTOKI Takanori, NAKAMURA Shin-ichi, SHIMOYAMA Jun-ichi (Aoyama Gakuin Univ.);
HONDA Genki, NAGAISHI Tatsuoki (Sumitomo Electric Industries, Ltd.)E-mail: c5617042@aoyama.jp~ 75 A cm-1 䜢♧䛩㓄ྥ⭷䛜ᚓ䜙䜜䚸ᡂ⭷᮲௳䛜ప㻝䠊䛿䛨䜑䛻㻌
ᵝ䚻䛺 REBa2Cu3Oy(RE123)㉸ఏᑟⷧ⭷䛾స〇᪉ἲ䛾䛺䛛䛷䜒䝣䝑⣲䝣䝸䞊MOD ἲ䛿䚸༢⣧䛺ᅛ┦཯ᛂ䛻䜘䜚 2 ㍈㓄ഃ䛻ᗈ䛜䜛䛣䛸䛜䜟䛛䛳䛯䚹ᙜ᪥䛿 Br ῧຍ Y123 ⷧ⭷䛾↝ᡂ᮲௳䛸⮫⏺㟁ὶ≉ᛶ䛾㛵ಀ䛻䛴䛔䛶䜒㆟ㄽ䛩䜛䚹ྥⷧ⭷䛜▷᫬㛫䛷ᚓ䜙䜜䜛䛯䜑䚸ᕤᴗ໬䛻㐺䛧䛯ᡭἲ䛷䛒䜛[1]䚹䛣䜜䜎䛷ᡃ䚻䛿 Cl, Br 䜢ཎᩱ⁐ᾮ䛻ῧຍ䛩䜛䛣䛸䛻䜘䜚 2㍈㓄ྥ䛧䛯 Ba2Cu3O4X2(Ba2342, X = Cl, Br)㓟䝝䝻䝀䞁໬≀䛾ᚤ⣽䛺⤖ᬗ䛜⭷୰䛻ᯒฟ䛧䚸Y123 䛾 2 ㍈㓄ྥ⤖ᬗᡂ㛗䜢ಁ㐍䛩䜛䛸䛸䜒䛻䚸☢ሙ୰䛾 Jc 䜢ᨵၿ䛩䜛䛣䛸䜢ሗ࿌䛧䛶䛝䛯[2]䚹䝣䝑⣲䝣䝸䞊MOD ἲ䛷䛿୙⣧≀䛾䜋䛸䜣䛹䛺䛔ᖹᆠ䛺⾲㠃䜢ᣢ䛴 Y123 ⷧ⭷䛜ᚓ䜙䜜䜛䛯䜑䚸Fig.1 䛻♧䛩䜘䛖䛻ᮏ↝ᡂᚋ䛾ⷧ⭷䛻ᑐ䛧䛶෌䜃⁐ᾮ䛾ሬᕸ䚸௬↝䚸↝ᡂ䜢⾜䛖 2 ᅇ↝ᡂἲ䛻䜘䜛ཌ⭷໬䛜ྍ⬟䛷䛒䜚 Ic ᨵၿ䛻᭷ຠ䛷䛒䜛䛣䛸䛜䜟䛛䛳䛶䛔䜛[3]䚹㻌
௨ୖ䛾⫼ᬒ䛾䜒䛸䚸ᮏ◊✲䛷䛿㛗ᑻ໬ྍ⬟䛺㔠ᒓ Clad ᇶయୖ䛷䛾 Ba2342 䜢ྵ䜐 Y123 ⷧ⭷䛾స〇䛻䛚䛔䛶䚸Ic 䛾ᨵ㻌

Fig. 1. Schematic image of a double-sintering method.㻌㻌ၿ䛻ྥ䛡䛯ཌ⭷໬ᡭἲ䜔↝ᡂ᮲௳䛾᭱㐺໬䜢㐍䜑䛶䛔䜛䚹㻞䠊ᐇ㦂᪉ἲ㻌Y, Ba, Cu 䛚䜘䜃 Cl, Br 䜢ྵ䜐᭷ᶵ㔠ᒓሷ⁐ᾮ䜢䚸㔠ᒓ
Clad ᇶయୖ䛻䝇䝢䞁䝁䞊䝖ἲ䛻䜘䜚ሬᕸ䛧䛯ᚋ䚸㓟⣲Ẽὶ୰䚸
500°C 䛷௬↝䛧䛶᭷ᶵ≀䜢ศゎ䛧䛯䚹䛣䛾᧯స䜢」ᩘᅇ⧞䜚㏉ 䛩 䛣 䛸 䛻䜘 䛳䛶 ⭷ ཌ 䜢ไ ᚚ 䛧 䛯 䚹 ᮏ ↝ ᡂ䛿 O2(30, 100ppm)/Ar 䝣䝻䞊୰䚸740–830°C, 1 min–18 h 䛾ᵝ䚻䛺᮲௳䛷⾜䛔䚸᭱ᚋ䛻㓟⣲Ẽὶ୰䚸450°C 䛷䛾䜰䝙䞊䝹䛻䜘䛳䛶䜻䝱䝸䜰

Fig. 2 Cross-sectional TEM image of Y123 film (~1.0 Pmt)
prepared by double-sintering method.㻌䛾᭱㐺䝗䞊䝥≧ែ䛻ไᚚ䛧䛯䚹䛣䜜䜙䛾ⷧ⭷䛻ᑐ䛧䛶䚸XRD
䛻䜘䜛┦ྠᐃ䚸SEM, TEM 䛻䜘䜛ᚤ⣽⤌⧊ほᐹ䚸ㄏᑟἲ䛻䜘䜛ᾮయ❅⣲ᾐₕୗ䛷䛾 Ic 䛾ホ౯䜢⾜䛳䛯䚹㻌㻟䠊⤖ᯝ䛸⪃ᐹ㻌
Fig.2 䛻 2 ᅇ↝ᡂἲ䛷స〇䛧䛯 Cl ῧຍ Y123 䛾 6 ᒙⷧ⭷(ሬᕸ䠉௬↝ 6 ᅇ䚸⭷ཌ~1.0 Pm)䛾᩿㠃 TEM ീ䜢♧䛩䚹ᮏ↝ᡂ᮲௳䛿 1䚸2 ᅇ┠䛸䜒䛻 PO2 = 10 Pa, 800°C, 1 h 䛷䛒䜛䚹⾲㠃䛜ᖹᆠ䛷⭷୰䛻 Ba2342 䛜ศᩓ䛧䛯㓄ྥ⭷䛷䛒䜛䛣䛸䛜☜ㄆ䛥䜜䛯䚹⥆䛔䛶䚸2 ᅇ┠䛾ᮏ↝ᡂ䛷䛿㉸ఏᑟᒙ䛜䝔䞁䝥䝺䞊䝖䛸䛺䜛䛯䜑䜘䜚ప㻌▷᫬㛫↝ᡂ䛷䜒㓄ྥ⭷䛜ᡂ㛗䛩䜛䛸⪃䛘䚸

Fig. 3 Cross-sectional TEM image (a) and electron
diffraction pattern (b) of the Y123 film (~1.0 Pmt)
prepared by fast double-sintering method.

↝ᡂ᮲௳䜢 PO2 = 10 Pa, 760°C, 1 min 䛸䛧䛶ྠᵝ䛺 6 ᒙⷧ⭷䜢స〇䛧䛯䚹䛣䛾ⷧ⭷䛾᩿㠃 TEM ീ䛸 Y123 䛸୰㛫ᒙ䜢ྵ䜐⠊ᅖ䛾㟁Ꮚ⥺ᅇᢡീ䜢 Fig. 3 䛻♧䛩䚹┤᪉య≧䛾 Ba2342 䛜⭷୰䛻ศᩓ䛧䛯⤌⧊䛜ほᐹ䛥䜜䚸㟁Ꮚ⥺ᅇᢡീ䛛䜙 Y123 ᒙ䛜୰㛫ᒙ䛸᱁Ꮚᩚྜ䛧䛶 2 ㍈㓄ྥ䛧䛶䛔䜛䛣䛸䛜☜ㄆ䛷䛝䛯䚹䛣䛾ヨᩱ䛾 Ic(77 K, ~0 T)䛿 122 A cm-1 䛷䚸2 ᅇ┠䛾↝ᡂ䛿䜟
䛪䛛 1 min 䛷䜒㧗 Ic 㓄ྥ⭷䛜ᡂ㛗䛩䜛䛣䛸䛜䜟䛛䛳䛯䚹
䜎䛯䚸Br ῧຍⷧ⭷䜢ᵝ䚻䛺 ᗘ䞉᫬㛫䞉㓟⣲ศᅽ䛷ᮏ↝ᡂཧ⪃ᩥ⊩㻌[1] Y. Ishiwata et al., IEEE Trans. Appl. Supercond. 23 (2013)
7500804.
[2] T. Motoki et al., Supercond. Sci. Technol. 27 (2014)
095017.
[3] S. Ikeda et al., Abstracts of CSSJ Conference 94 (2017) 19.

䛧䛯䛸䛣䜝(↝ᡂᚋ⭷ཌ~0.5 Pm)䚸Cl ῧຍⷧ⭷䛷䛿㓄ྥ⭷䛜ᚓ䜙䜜䛺䛔 PO2 = 10 Pa, 750°C, 1 h 䛾↝ᡂ䛷䜒 Ic(77 K, ~0 T)― 36 ―

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2017年度秋季低温工学・超電導学会

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Y 系線材プロセス (2)పᾮ┦ᡂ㛗ἲ䜢⏝䛔䛯ᑟ㟁ᛶ 㻾㻱䇵㻹䇵㻻 ୰㛫ᒙ䛾స〇㻌㻲㼍㼎㼞㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㻾㻱䇵㻹䇵㻻㻌㼏㼛㼚㼐㼡㼏㼠㼕㼢㼑㻌㼎㼡㼒㼒㼑㼞㻌㼘㼍㼥㼑㼞㻌㼎㼥㻌㼘㼛㼣㻙㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㻸㻼㻱㻌㼙㼑㼠㼔㼛㼐㻌― 37 ―

㻾㼑㼟㼕㼟㼠㼕㼢㼕㼠㼥㻌㼛㼒㻌㻺㼐㻞㻺㼕㻻㻠 㼒㼕㼘㼙㻌㼇㼙: 㼏㼙㼉

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㻡㻜 㻝㻜㻜 㻝㻡㻜 㻞㻜㻜 㻞㻡㻜 㻟㻜㻜㻌㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼇㻷㼉㻌㻲㼕㼓㻚㻝㻌U㻙㼀㻌㼏㼡㼞㼢㼑㼟㻌㼛㼒㻌㻸㼍㻺㼕㻻㻟㻌㼍㼚㼐㻌㻺㼐㻞㻺㼕㻻㻠㻌㼒㼕㼘㼙㼟㻌㼜㼞㼑㼜㼍㼞㼑㼐㻌㻌㼍㼠㻌㻡㻜㻜㽅㻯㻌㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌 㼀㻚㻌㻰㼛㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻶㻚㻌㻶㼍㼜㼍㼚㻌㻵㼚㼟㼠㻚㻌㻹㼑㼠㻚㻌㻹㼍㼠㼑㼞㻚㻘㻌㼂㼛㼘㻚㻌㻤㻜㻘㻌㻺㼛㻚㻌㻣㻌㻔㻞㻜㻝㻢㻕㻌㻠㻞㻤䇵㻠㻟㻟㻌㻞㻚㻌㻿㻚㻌㻲㼡㼚㼍㼗㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼟㻌㻼㼞㼛㼏㼑㼐㼕㼍㻘㻌㼂㼛㼘㻚㻌㻞㻣㻌㻔㻞㻜㻝㻞㻕㻌㻞㻤㻠㻙㻞㻤㻣㻌㻟㻚㻌㼅㻚㻌㻹㼕㼥㼍㼏㼔㼕㻌㼑㼠㻌㼍㼘㻚㻦㻌㻼㼔㼥㼟㼕㼏㼟㻌㻼㼞㼛㼏㼑㼐㼕㼍㻘㻌㼂㼛㼘㻚㻌㻢㻡㻌㻔㻞㻜㻝㻡㻕㻌㻝㻞㻥㻙㻝㻟㻞㻌㻠㻚㻌㻿㻚㻌㻲㼡㼚㼍㼗㼕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㻞㻢㻘㻌㻺㼛㻚㻌㻟㻌㻔㻞㻜㻝㻢㻕㻌㻣㻞㻜㻝㻠㻜㻠㻌㻡㻚㻌 㻯㻚㻌 㻿㼔㼕㼢㼍㼗㼡㼙㼍㼞㼍㻌 㼑㼠㻌 㼍㼘㻚㻦㻌 㻿㼛㼘㼕㼐㻌 㻿㼠㼍㼠㼑㻌 㻿㼏㼕㼑㼚㼏㼑㼟㻘㻌 㻡㻌 㻔㻞㻜㻜㻟㻕㻌㻟㻡㻝䇵㻟㻡㻣㻾㼑㼟㼕㼟㼠㼕㼢㼕㼠㼥㻌㼛㼒㻌㻸㼍㻺㼕㻻㻟 㼒㼕㼘㼙㻌㼇㼙: 㼏㼙㼉㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⭷䜢స〇䛧䛶䛝䛯㼇㻞㼉䠊䛥䜙䛻䠈㻾㻱 ཎᩱ䠈㻮㼍 ཎᩱ䜢ㄪᩚ䛩䜛䛣䛸䛷䠈㻾㻱㻮㼍㻞㻯㼡㻟㻻㼥㻌 㻔㻾㻱㻝㻞㻟㻕ཬ䜃 㻾㻱㻮㼍㻞㻯㼡㻠㻻㻤㻌㻔㻾㻱㻝㻞㻠㻕䜢㑅ᢥⓗ䛻 㻠㻞㻡䡚㻠㻣㻡㽅㻯 䛾ప ୗ䛷ᡂ⭷䛩䜛䛣䛸䛻ᡂຌ䛧䛶䛔䜛㼇㻟㻘㻌㻠㼉䠊୍᪉䠈ᑟ㟁ᛶ䜢᭷䛧䠈䛛䛴 㼅㻝㻞㻟 䛸Ⰻዲ䛺䜸䞊䝮ᛶ᥋ゐ䜢♧䛩 㻸㼍䇵㻺㼕䇵㻻 䛿䠈㏻ᖖ䛾ᅛ┦཯ᛂἲ䛻䛚䛡䜛཯ᛂ ᗘ䛻 㻝㻜㻜㻜㽅㻯 ௨ୖ䜢せ䛧䛯䛾䛻ᑐ䛧䠈㻷㻻㻴 䝣䝷䝑䜽䝇䜢⏝䛔䜛䛣䛸䛷 㻠㻜㻜㽅㻯 䛷䡚㻡㻌 㽀㼙 䛾ᚤ⤖ᬗ䛜ྜᡂ䛥䜜䜛䛣䛸䛜ሗ࿌䛥䜜䛶䛔䜛㼇㻡㼉䠊䛭䛣䛷ᮏ◊✲䛷䛿䠈㓄ྥ䛧䛯ᑟ㟁ᛶ୰㛫ᒙཬ䜃 㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ᒙ䜢ప ⎔ቃ䛷ᡂ⭷䛩䜛䛣䛸䜢┠ⓗ䛸䛧䛶䠈ప 䝣䝷䝑䜽䝇䜢⏝䛔䛯 㻾㻱䇵㻹䇵㻻 ⭷䠈ཬ䜃䛭䛾ୖᒙ䛾㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⭷䛾స〇䜢ヨ䜏䛯䠊㻌㻌㻞䠊ᐇ㦂᪉ἲ㻌㻞䠊㻝䠊㻾㻱䇵㻹䇵㻻 ⭷㻌㻾㻱㻞㻻㻟㻌㻔㻾㻱㻌㻩㻌㻸㼍㻘㻌㻺㼐㻕㻘㻌㻹䇵㻻㻌㻔㻹㻌㻩㻌㻺㼕㻘㻌㻯㼡㻘㻌㻲㼑㻕ཎᩱ⢊ᮎ䜢䠈㔠ᒓ䝰䝹ẚ䛜 㻾㻱㻦㻹㻌㻩㻌㻝㻦㻝㻘㻌㻞㻦㻝 䛸䛺䜛䜘䛖⛗㔞䞉ΰྜ䛧䛯䠊䜰䝹䝭䝘ᆣላ୰䛻䛚䛔䛶䠈㻸㼍㻭㼘㻻㻟㻌 㻔㻝㻜㻜㻕༢⤖ᬗ㻔㻸㻭㻻㻕ᇶᯈ䠈ΰྜ⢊䠈ཬ䜃ΰྜ⢊䛻ᑐ䛧 㻠㻜㻜㻌 㼣㼠㻑䛾 㻷㻻㻴 䜢 㻠㻜㻜䡚㻣㻜㻜㽅㻯 䛷 㻝㻞᫬㛫⇕ฎ⌮䛧䛯䠊⅔෭ᚋ䠈㻷㻻㻴 䜔 㻷㻞㻯㻻㻟 䜢㝖ཤ䛩䜛䛯䜑Ỉ䠈ཬ䜃䜶䝍䝜䞊䝹⏝䛔䛶Ὑί䛧䠈㻾㻱䇵㻹䇵㻻㻌㻛㻌㻸㻭㻻 ᇶᯈ䜢ᚓ䛯䠊㻌㻞䠊㻞䠊㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⭷㻌ᚓ䜙䜜䛯 㻾㻱䇵㻹䇵㻻㻌㻛㻌㻸㻭㻻 ᇶᯈ䠈㻾㻱㻞㻻㻟㻘㻌㻮㼍㻯㻻㻟㻘㻌㻯㼡㻻 ཎᩱ⢊ᮎ䛾ΰྜ⢊䠈ཬ䜃ΰྜ⢊䛻ᑐ䛧 㻞㻜㻜㻌㼣㼠㻑䛾 㻷㻻㻴 䜢⏝䛔䛶䠈㻞䠊㻝 䛸ྠᵝ䛻 㻝㻞 ᫬㛫⇕ฎ⌮䛩䜛䛣䛸䛷䠈㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻㻌 㻛㻌㻾㻱䇵㻹䇵㻻㻌㻛㻌㻸㻭㻻 ᇶᯈ䜢ᚓ䛯䠊㻌㻞䠊㻟䠊ホ౯᪉ἲ㻌ᚓ䜙䜜䛯⭷䛾⤖ᬗ┦ཬ䜃㓄ྥᛶ䜢 㼄㻾㻰 ᅇᢡ䛻䜘䜚䠈⾲㠃ᙧែ䜢 㻿㻱㻹 ほᐹ䛻䜘䜚䠈㟁Ẽ≉ᛶ䜢┤ὶᅄ➃Ꮚἲ䛻䜘䜚ホ౯䛧䛯䠊㻌㻌㻟䠊⤖ᯝཬ䜃⪃ᐹ㻌㻲㼕㼓㻚㻝 䛻㻌 㻹㻌 㻩㻌 㻺㼕 䜢⏝䛔䛶స〇䛧䛯㻔㼍㻕㻌 㻸㼍䇵㻺㼕䇵㻻 ཬ䜃㻔㼎㻕㻌㻺㼐䇵㻺㼕䇵㻻 䛾䠈ཎᩱ㔠ᒓ䝰䝹ẚ䠈స〇 ᗘ䛻ᑐ䛧䛶ᚓ䜙䜜䛯⤖ᬗ┦ཬ䜃䛭䛾㓄ྥᛶ䛻䛴䛔䛶♧䛩䠊㻔㼍㻕㻌 㻸㼍㻙㻺㼕㻙㻻 䛷䛿䠈୺䛻㓄ྥ䛧䛯 㻸㼍㻺㼕㻻㻟 ┦䛜⏕ᡂ䛥䜜䛶䛔䛯䛜䠈 ᗘ䛜㧗䛟䛺䜛䛻㻲㼍㼎㼞㼕㼏㼍㼠㼕㼛㼚㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼇㽅㻯㼉㻌⯞ᮌ㻌 ಟᖹ䠈ῧ⏣㻌 ᆂభ䠈ඣᓥ㻌 ᗣ኱䠈ᒣ⏣㻌 ᐜኈ䠄ᓥ᰿኱䠅㻌㻲㼁㻺㻭㻷㻵㻌㻿㼔㼡㼔㼑㼕䠈㻿㻻㻱㻰㻭㻌㻷㼑㼕㼟㼡㼗㼑䠈㻷㻻㻶㻵㻹㻭㻌㼅㼍㼟㼡㼔㼕㼞㼛䠈㼅㻭㻹㻭㻰㻭㻌㼅㼍㼟㼡㼖㼕㻌㻔㻿㼔㼕㼙㼍㼚㼑㻌㼁㼚㼕㼢㻚㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼟㻙㼒㼡㼚㼍㼗㼕㻬㼞㼕㼗㼛㻚㼟㼔㼕㼙㼍㼚㼑㻙㼡㻚㼍㼏㻚㼖㼜㻌㻌䛴䜜䛶┦Ᏻᐃᛶཬ䜃㓄ྥᛶ䛜ຎ໬䛧䛯䠊୍᪉㻔㼎㻕㻌 㻺㼐㻙㻺㼕㻙㻻㻝䠊䛿䛨䜑䛻㻌
䛷䛿䠈㻡㻜㻜䡚㻣㻜㻜㽅㻯 䛷 㻞 ㍈㓄ྥ䛧䛯 㻺㼐㻞㻺㼕㻻㻠 ┦䛜Ᏻᐃ䛧䛶ᚓ䜙䛣䜜䜎䛷 㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⥺ᮦ䛿䠈㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ᒙሁ✚᫬䛾㧗 ⎔ቃ䛻⏤᮶䛧䛯㔠ᒓᇶᮦ䛛䜙䛾ඖ⣲ᣑᩓ㜵Ṇ䛾䛯䜑䠈䜜䜛䛣䛸䛜䜟䛛䛳䛯䠊㻌䜎䛯 㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ᒙ䛾㓄ྥᛶྥୖ䛾䛯䜑䛻䠈ᗄᒙ䛻䜒Ώ䜛㻲㼕㼓㻚㻞 䛻୺┦䛸䛧䛶ᚓ䜙䜜䛯 㻸㼍㻺㼕㻻㻟 ཬ䜃 㻺㼐㻞㻺㼕㻻㻠 䜢䠈䛭䜜⤯⦕ᛶ䛾୰㛫ᒙ䜢௓䛧 㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⭷䜢ሁ✚䛥䛫䛯ᵓ㐀䛷䛮䜜 㻡㻜㻜㽅㻯 䛷స〇䛧䛯⭷䛾U㻙㼀 ᐃ⤖ᯝ䜢♧䛩䠊㻸㼍㻺㼕㻻㻟 ⭷㛤Ⓨ䛜㐍䜑䜙䜜䛶䛝䛯䠊䛭䜜ᨾ䠈㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ᒙୖ䛻Ᏻᐃ໬䛿 㻣㻣㻌 㻷 䛻䛚䛡䜛᢬ᢠ⋡䛜⣙ 㻝㻚㻣㻌 㼙:㻌 㼏㼙 䛸ప䛟䠈ᑟ㟁ᛶ୰㛫ᒙ䛸䛧䛶㧗౯䛺 㻭㼓 䜢ཌ䛟ሁ✚䛥䛫䜛ᚲせ䛜䛒䜚䠈඲యⓗ䛺〇ᒙ䛸䛧䛶᭷ᮃ䛺ᮦᩱ䛷䛒䜛䛣䛸䛜♧၀䛥䜜䛯䠊㻌㐀䝁䝇䝖䛾పῶ䛜ᅔ㞴䛸䛺䛳䛶䛔䛯䠊䛭䛧䛶㏆ᖺ䠈㻌㻾㻱㻺㼕㻻㻟
㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ⥺ᮦ䛾ᮦᩱ䝁䝇䝖䛾పῶ䛻ྥ䛡䛯ヨ䜏䛸䛧䛶䠈㻌㼣㻛㻌 㼕㼚㻙㼜㼘㼍㼚㼑㼍㼘㼕㼓㼚㼙㼑㼚㼠୰㛫ᒙ䛻ᑟ㟁ᛶ㓟໬≀ᮦᩱ䜢⏝䛔䜛䛣䛸䛷䠈㻭㼓 Ᏻᐃ໬ᒙ䜢㻌㻾㻱㻞㻺㼕㻻㻠
㼣㻛㼛㻌㼕㼚㻙㼜㼘㼍㼚㼑ᚲせ䛸䛧䛺䛔⥺ᮦ䛾◊✲䞉㛤Ⓨ䛜⾜䜟䜜䛶䛝䛯㼇㻝㼉䠊䛣䛾⥺ᮦ㻌㻾㻱㻟㻺㼕㻞㻻㻣
㼍㼘㼕㼓㼚㼙㼑㼚㼠ᵓ㐀䛻䛚䛡䜛ᑟ㟁ᛶ୰㛫ᒙ䛸 㻾㻱䇵㻮㼍䇵㻯㼡䇵㻻 ᒙ䛾ᡂ⭷⎔ቃ䜢㻌୍⮴䛥䛫䜛䛣䛸䛜䛷䛝䜜䜀䠈㐃⥆ⓗ䛺⥺ᮦ〇㐀䛜ᐇ⌧䛧䠈ᮦ
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ᩱ䝁䝇䝖䛰䛡䛷䛺䛟䠈〇㐀䝁䝇䝖䛾పῶ䜒ྍ⬟䛸䛺䜛䠊䛥䜙䛻䠈ྛ㻌㻣㻜㻜㻗ᒙ䛾ᡂ⭷ ᗘ䛾ప ໬䛜ྍ⬟䛻䛺䜜䜀䠈㔠ᒓᇶᮦୖ䛾୙⣧㻌≀ඖ⣲ᣑᩓ㜵Ṇᒙ䛾๐ῶ䛜ᮇᚅ䛷䛝䜛䠊㻌㻌䛣䜜䜎䛷ᡃ䚻䛿䠈Ỉ㓟໬䜹䝸䜴䝮㻔㻷㻻㻴㻕ཬ䜃Ỉ㓟໬䝘䝖䝸䜴㻌 㻢㻜㻜䝮㻔㻺㼍㻻㻴㻕䠈䜎䛯䛣䜜䜙䛾ඹᬗ⁐ᾮ䜢䝣䝷䝑䜽䝇䛻⏝䛔䛯ᾮ┦㻌ᡂ 㛗 ἲ 䛻 䜘 䜚 䠈 㻢㻡㻜㽅㻯 ௨ ୗ 䛾 ప ⎔ ቃ 䛷 㻞 ㍈ 㓄 ྥ 䛧 䛯
㻌 㻡㻜㻜

第95回

2017年度秋季低温工学・超電導学会

1B-p10Y 系線材プロセス (2)FeSe㸩SrTiO3 ࢼࣀࢥ࣏ࣥࢪࢵࢺⷧ⭷ࡢస〇࡜ᵓ㐀ゎᯒ
Fabrication and structural analysis of FeSe + SrTiO3 nanocomposite film

LAO㻌

FeSe
(004)㻌LAO㻌
FeSe(003)㻌

STO(200)㻌

FeSe(002)㻌

LAO㻌

STO(100)㻌

FeSe(001)㻌

FeSe(001)㻌

Intensity(a.u)ᡞ಴ ྐᬡ, ᇼฟ ᭸ဢ, ᯇᮏ せ (஑ᕤ኱); ୍℩ ୰ (㟁୰◊)TOKURA Fumiaki, HORIDE Tomoya, MATSUMOTO Kaname (Kyushu Inst.Technol.); ICHINOSE Ataru (CRIEPI)㻌㻌࡟ࠊFeSeࠊSTO ࡣ LAO ᇶᯈୖ࡟ࡑࢀࡒࢀ(001)㓄ྥࡋ࡚ᡂ㻝䠊⥴ゝ㻌㛗ࡍࡿࡇ࡜ࡀศ࠿ࡗࡓࠋFeSe1.2+STO ⷧ⭷࡟ࡘ࠸࡚ࡣ XRD
 ㉸ఏᑟࡢᐇ⏝໬࡜ࡋ࡚኱㟁ὶࢆ㏦㟁ࡍࡿࡓࡵࡢ㉸ఏᑟࢣ࣮ࣈࣝࠊ㟁☢▼ࡢࡓࡵࡢࢥ࢖ࣝ࡞࡝ࢆస〇ࡍࡿࡓࡵ࡟
ࡢ⤖ᯝࡼࡾ FeSe ࡢ(001)㠃ࡢࣆ࣮ࢡࡀ☜ㄆ࡛ࡁࡓࡀ STO⥺ᮦ໬ࡀ㔜せ࡟࡞ࡗ࡚ࡃࡿࠋ⥺ᮦ໬ࡢ㝿࡟ၥ㢟࡜࡞ࡗ࡚ࡢࣆ࣮ࢡࡣ☜ㄆࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠿ࡗࡓࠋࡇࡢ⤖ᯝ࠿ࡽࡃࡿࡢࡀ㟁Ẽ᢬ᢠ0࡛ὶࡏࡿ㟁ὶᐦᗘࡢ᭱኱್࡛࠶ࡿ⮫STO ࢆᑟධࡋ࡚ࡶᑡ࡞ࡃ࡜ࡶ FeSe ࡣᡂ㛗ࡍࡿࡇ࡜ࡀศ࠿
⏺㟁ὶᐦᗘ(Jc)࡛࠶ࡿࠋ኱ࡁ࡞㟁ὶࡀὶࢀࡿ࡜☢᮰ࡀືࡁࠊࡿࠋ
STOࡀFeSeࡢᡂ㛗࡟ཬࡰࡍᙳ㡪ࢆ㆟ㄽࡍࡿࡓࡵ࡟Fig.2
ㄏᑟ㟁ὶ࡟ࡼࡾ㉸ఏᑟ≧ែࡀቯࢀࡿࠋࡇࢀࢆ㜵ࡄࡓࡵ࡟ࣆࣥࢽࣥࢢຠᯝࢆ฼⏝ࡋࡓேᕤࣆࣥᑟධࡢ◊✲ࡀ࡞ࡉࢀ࡟FeSe1.2㸩STOࡢTEM⏬ീࢆ♧ࡍࠋFeSe࣐ࢺࣜࢵࢡࢫෆ࡟
࡚࠸ࡿࠋࡇࢀࡣ㉸ఏᑟయෆ㒊࡟㠀㉸ఏᑟ≀㉁ࢆᑟධࡍࡿ
STO࡟⏤᮶ࡍࡿ࡜⪃࠼ࡽࢀࡿᰕ≧ࢥࣥࢺࣛࢫࢺ(ࢼࣀࣟࢵࡇ࡜࡛☢᮰ࢆᅛᐃࡋࠊㄏᑟ㟁ὶࡢⓎ⏕ࢆᢚไࡍࡿ࡜࠸࠺ࢻ)ࡀ☜ㄆ࡛ࡁࡓࠋࢼࣀࣟࢵࢻࡢ㛫㝸ࡣ1~1.5 nm࡛┤ᚄࡣࡶࡢ࡛࠶ࡿࠋ
2~2.5 nm࡛࠶ࡗࡓࠋࡇࡢࡼ࠺࡟FeSe࡟STOࢆᑟධࡍࡿࡇ࡜
Y⣔࡛ࡣேᕤࣆࣥࡢ◊✲ࡀ┒ࢇ࡟⾜ࢃࢀ࡚࠾ࡾࠊேᕤࣆ
࡛ᩘnmࢧ࢖ࢬࡢࢼࣀࣟࢵࢻࢆస〇࡛ࡁࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
ࣥࢆࢼࣀࣟࢵࢻࡢᙧ࡛ᑟධࡍࡿࡇ࡜ࡀከࡃ࡞ࡉࢀ࡚࠸ࡿࠋ
ᙜ᪥ࡣSTO㔞࡟ࡼࡿFeSeࡢ᱁Ꮚᐃᩘࡢኚ໬ࡸస〇 ᗘ࡜ࢼࣀࣟࢵࢻ࡜ࡣᇶᯈ࠿ࡽ⭷⾲㠃࡟ྥ࠿ࡗ࡚ᰕ≧࡟ᯒฟࡍ
STO㔞࡟ࡼࡿࢼࣀࣟࢵࢻࡢศᕸኚ໬࡟ࡘ࠸࡚ࡶ㆟ㄽࡍࡿࡿࢧ࢖ࢬࡀᩘnm㹼10 nmࡢ㠀㉸ఏᑟᯒฟ≀ࡢࡇ࡜࡛࠶ࡿࠋ
ணᐃ࡛࠶ࡿࠋ
Y⣔㉸ఏᑟయࡣBaZrO3ࠊBaSnO3ࠊBaHfO3࡞࡝ࢆᑟධࡍࡿ
㻌㻠㻚㻌 ㅰ㎡㻌ࡇ࡜࡛࠼ࡽࢀࡓࢼࣀࣟࢵࢻ࡟ࡼࡾJc ࡀྥୖࡍࡿࡇ࡜ࡀ▱ᮏ◊✲ࡣ⛉Ꮫ◊✲ຓᡂ஦ᴗ(16K18237)ࡢຓᡂࢆཷࡅࡓࠋ
ࡽࢀ࡚࠸ࡿࠋࢧ࢖ࢬࡸᐦᗘࢆᇶᮏⓗࣃ࣓࣮ࣛࢱ࣮࡜ࡋ࡚
ᵓ㐀ไᚚࡀ⾜ࢃࢀ࡚࠸ࡿࠋࡉࡽ࡟ࠊ⏺㠃ࡢ≧ែࡸࡦࡎࡳ㻡㻚㻌 ཧ⪃ᩥ⊩㻌 㻌ࡶJcࡢไᚚ࡟࠾࠸࡚㔜せ࡛࠶ࡿࡇ࡜ࡀ♧ࡉࢀ࡚࠸ࡿࠋ
[1] P. Mele, et. al.: Supercond. Sci. Technol, vol. 25 (2012),
୍᪉࡛ࠊY⣔㉸ఏᑟయ࡜ẚ࡭ࠊ㕲⣔㉸ఏᑟయ࡟࠾࠸࡚ࡢ
p.084021ேᕤࣆࣥࡢ◊✲ࡣᑡ࡞࠸ࠋᮏ◊✲࡛╔┠ࡍࡿFeSeࡣ໬Ꮫ
[2] E. Bellingeri, et. al.: Appl. Phys. Lett, vol. 96 (2010),
ᘧࡼࡾ11⣔(Fe(Te,Se))࡜࿧ࡤࢀࠊⷧ⭷໬ࡍࡿࡇ࡜࡛㉸ఏᑟ
p.102512㌿⛣ ᗘ(Tc)ࡀྥୖࡍࡿ࡜࠸࠺◊✲ሗ࿌ࡀࡉࢀ࡚࠸ࡿࠋ
[3] T. Ozaki, et. al.: Nat. Commun.7 (2016), p.13036
Fe(Te,Se)ⷧ⭷࡟࠾࠸࡚ࡣJcࡢホ౯ࡀ⾜ࢃࢀ0.41 MA/cm2ࡢ
[4] Y. Zhang, et. al.: Appl. Phys. Lett, vol. 98 (2011), p.042509
Jcࡀ4.2 K࡛ሗ࿌ࡉࢀ࡚࠸ࡿ[1]ࠋFe(Te,Se)ⷧ⭷࡛ࡣ㌿఩ࡀࣆࣥࢽࣥࢢࢭࣥࢱ࣮࡜ࡋ࡚ᶵ⬟ࡋJc ࡀྥୖࡍࡿ࡜࠸࠺◊✲ࡀ࠶ࡿ[2]ࠋࡲࡓࠊⷧ⭷࡟↷ᑕࢆ⾜࠸Ḟ㝗ࢆᑟධࡍࡿ◊FeSe
Se1.2㻌
✲࡞࡝ࡀሗ࿌ࡉࢀ࡚࠸ࡿ[3]ࠋࡋ࠿ࡋࠊࢼࣀࢥ࣏ࣥࢪࢵࢺ
໬࡟ࡼࡿேᕤࣆࣥᑟධࡢJcࡢ◊✲ࡣࡁࢃࡵ࡚ᑡ࡞࠸ࠋ㕲⣔࡟࠾ࡅࡿࢼࣀࣟࢵࢻࡢሗ࿌ࡣCoࢻ࣮ࣉࡋࡓBaFe2As2ⷧ⭷୰ࡢBaFeO2ࡢࡳ࡛࠶ࡿ[4]ࠋࡋ࠿ࡋࠊBaFe2As2࡜Y⣔㉸ఏᑟయࡢ◊✲ሗ࿌࠿ࡽFeSe࡟࠾࠸࡚ࡶࢼࣀࣟࢵࢻ࡟ࡼࡾ☢
STO㻌
S᮰ࣆࣥࢽࣥࢢ≉ᛶࡢྥୖࡀᮇᚅࡉࢀࡿࠋࡑࢀࢆᐇ⌧ࡍࡿ࡟ࡣࢼࣀࣟࢵࢻస〇ᡭἲࢆ᫂ࡽ࠿࡟ࡍࡿᚲせࡀ࠶ࡿࠋᮏ
◊✲࡛ࡣFeSeⷧ⭷࡟࠾ࡅࡿࢼࣀࣟࢵࢻᑟධࢆ⾜࠸ࡑࡢᵓ㐀ࢆホ౯ࡍࡿࠋࡑࡢ⤖ᯝࢆࡶ࡜࡟Jcไᚚ࡟ࡴࡅࡓࢼࣀࣟࢵ
FeSe1.22+STO㻌ࢻస〇ࡢྍ⬟ᛶࢆ㆟ㄽࡍࡿࠋ㻌㻞䠊ᐇ㦂᪉ἲ㻌
PLD(Pulsed Laser Deposition)ἲ࡟ࡼࡾ FeSe+SrTiO3(ST
5
15
25
35
45
55
65
75
O)ⷧ⭷ࢆస〇ࡋࡓࠋFeSe+STO ⷧ⭷ࡢస〇࡛ࡣࠊFeSe ࢱ
2T(degrees)࣮ࢤࢵࢺୖ࡟ STO ࣌ࣞࢵࢺࢆྲྀࡾ௜ࡅࡓࠋ2 ✀㢮ࡢ FeSe
Fig.1 The X-ray diffraction pattern.
ࢱ࣮ࢤࢵࢺ FeSex(x=1.0, 1.2)ࢆ⏝࠸ࠊSTO ࡢ㠃✚ศ⋡(5 %,10 %, 25 %)ࢆኚ໬ࡉࡏࡓࠋᇶᯈࡣ LaAlO3(LAO)ࠊᇶᯈ
ᗘࡣ 300 䉝㹼600 䉝࡜ࡋࡓࠋస〇ࡋࡓヨᩱࡢ㓄ྥᛶࡸ᱁Ꮚᐃᩘࡢホ౯࡟ X ⥺ᅇᢡ(XRD)ࠊ⾲㠃≧ែࡢホ౯࡟㉮ᰝᆺ㟁Ꮚ㢧ᚤ㙾(FE-SEM)ࠊSTO ศᕸ࡜ࢼࣀࣟࢵࢻࡢᙧ≧ࡢホ
౯࡟㏱㐣ᆺ㟁Ꮚ㢧ᚤ㙾(TEM)ࢆ⏝࠸ࡓࠋ㻌㻟䠊⤖ᯝ㻌
Fig.1 ࡟ FeSe1.2ࠊSTOࠊFeSe1.2+STO ⷧ⭷ࡢ XRD ⤖ᯝࢆ
10nm♧ࡍࠋFeSe1.2 ⷧ⭷࡛ࡣ FeSe ࡢ(001)ࠊ(002)㠃ࡢࣆ࣮ࢡࡀぢࡽࢀ FeSe ⷧ⭷ࡀస〇࡛ࡁࡓࠋྠᵝ࡟ࠊSTO ⷧ⭷࡟࠾࠸࡚Fig.2 TEM image of FeSe+STO nanocomposite film.
ࡶ STO ࡢ(100)ࠊ(200)㠃ࡢࣆ࣮ࢡࡀ☜ㄆ࡛ࡁࡓࠋࡇࡢࡼ࠺

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第95回

2017年度秋季低温工学・超電導学会