TC-ENHANCEMENT OF THE (TL,PB,BI)-SR-CA-CU-O AND TL-BA-CA-CU-O SYSTEMS

被引：1
作者：
TSAI, MJ
WU, SF
LU, SW
HUANG, YT
LIU, RS
机构：
[1] Materials Research Laboratories., Industrial Technology Research Institute, Chutung
来源：
APPLIED SUPERCONDUCTIVITY | 1993年 / 1卷 / 3-6期
关键词：
D O I：
10.1016/0964-1807(93)90265-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tc enhancement of the Tl-1223 and TI-2223 phase with nominal compositions of (TI0.6Pb0.2Bi0.2)ST1.6Ca2.4Cu3Oy and Tl1.7Ca2.3Ba2Cu3Oy was performed by systematically annealing the as-sintered samples in closed system with various oxygen partial pressures. Tc can be raised by up to 7 K after annealing at 860-degrees-C and 820-degrees-C for TI-12223 and 2223 respectively. A comparison of the annealing effect on the chemical stability. We also find that the Tc enhancement can be achieved without overall compositional change in the Tl-1223 system.
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收藏
页码：527 / 534
页数：8
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