Self-field effects on critical current values in Tl-1223 tapes

被引:22
作者
Fox, S
Moore, JC
Jenkins, R
Grovenor, CRM
Boffa, V
Bruzzese, R
Jones, H
机构
[1] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND
[2] UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND
[3] ENEA FRASCATI,I-00044 FRASCATI,ROME,ITALY
来源
PHYSICA C | 1996年 / 257卷 / 3-4期
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1016/0921-4534(95)00762-8
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have measured the properties of a large number of Tl-1223 tapes as part of a programme to optimise the fabrication procedures. During this work we have noticed that the highest I-c values are not proportionally dependent on the cross-sectional geometry of the tapes. There seems to be a limiting I-c value of around 10-13 A in our samples (and those of many other groups). We have performed a series of experiments on self-field effects in Tl-1223 tapes and compared the results with calculated field distributions in tape-shaped conductors in different configurations. We conclude that the I-c are self-field limited in these tapes when the currents being carried are around 10 A.
引用
收藏
页码:332 / 340
页数:9
相关论文
共 22 条
[1]   THE PREPARATION OF 1223 TL-CA-BA-CU-OXIDE SUPERCONDUCTING FILMS VIA THE REACTION OF SILVER-CONTAINING SPRAY DEPOSITED CA-BA-CU-OXIDE WITH THALLIUM OXIDE VAPOR [J].
DELUCA, JA ;
KARAS, PL ;
TKACZYK, JE ;
BEDNARCZYK, PJ ;
GARBAUSKAS, MF ;
BRIANT, CL ;
SORENSEN, DB .
PHYSICA C, 1993, 205 (1-2) :21-31
[2]   CRITICAL-CURRENT DENSITIES AT 77 K AND 4.2 K OF BI(2223) TAPES PREPARED BY COLD AND HOT DEFORMATION [J].
FLUKIGER, R ;
GRASSO, G ;
HENSEL, B ;
DAUMLING, M ;
JEREMIE, A ;
PERIN, A ;
GRIVEL, JC ;
GLADYSHEVSKII, R .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1995, 5 (02) :1150-1153
[3]  
GLADYSHEVSKII RE, 1995, IN PRESS EUC 95 ED J
[4]   OPTIMIZATION OF THALLIUM 1223 HIGH-TEMPERATURE SUPERCONDUCTING WIRE BY A SINGLE-STAGE COLD DEFORMATION PROCESS [J].
GLOWACKI, BA ;
ASHWORTH, SP .
PHYSICA C, 1992, 200 (1-2) :140-146
[5]   SELF-FIELD EFFECT AND CURRENT DISTRIBUTION IN BI(2223) TAPES AT 77-K [J].
GRASSO, G ;
FLUKIGER, R .
PHYSICA C, 1995, 253 (3-4) :292-296
[6]  
HALDAR P, COMMUNICATION
[7]  
HENG DN, 1995, J APPL PHYS, V77, P5287
[8]  
KAMO T, 1991, APPL PHYS LETT, V59, P3186, DOI 10.1063/1.105731
[9]   GRANULARITY, MICROSTRUCTURE, AND FLUX-CREEP IN TLBA2CA2CU3O9+DELTA SUPERCONDUCTING POWDER AND SILVER-SHEATHED TAPES [J].
KUNG, PJ ;
WAHLBECK, PG ;
MCHENRY, ME ;
MALEY, MP ;
PETERSON, DE .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1994, 220 (3-4) :310-322
[10]   MICROSTRUCTURAL DEVELOPMENT AND CRITICAL CURRENTS IN LONG-LENGTH (TL, BI)-(SR, BA)-CA-CU-O WIRES [J].
MILLER, DJ ;
HU, JG ;
REN, Z ;
WANG, JH .
JOURNAL OF ELECTRONIC MATERIALS, 1994, 23 (11) :1151-1158