SUPERCONDUCTIVITY STUDIES ON TL-M-BA-CU-O (M = CE, TH, PR, TB, PB, AND TE) SYSTEM

被引：1
|
作者：
THOMAS, KA [1 ]
VARADARAJU, UV [1 ]
RAO, GVS [1 ]
TOMY, CV [1 ]
MALIK, SK [1 ]
机构：
[1] TATA INST FUNDAMENTAL RES,BOMBAY 400005,INDIA
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 88卷 / 01期
关键词：
D O I：
10.1016/0022-4596(90)90212-G
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Superconductivity with a Tc,zero at 75 ± 1 K has been observed in TlMBaCuO (M = Ce, Th) system for a starting nominal composition of Tl2.2M1Ba2Cu3Oy. X-ray data show that the compounds are multiphasic with the 2201 phase as the predominant one which is responsible for superconductivity. Lower Tc values are noted for M = Pr and Tb. Only metallic behavior is observed for pure Tl2Ba2Cu1Oy and M = Pb or (Pb + Sb) or Te containing phases down to 15 K. © 1990.
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页码：177 / 182
页数：6
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