STUDY OF SUPERCONDUCTIVITY IN THE HG-BA-CA-CU-O SYSTEM

被引：125

作者：

GAO, L ^{[1
]}

HUANG, ZJ ^{[1
]}

MENG, RL ^{[1
]}

LIN, JG ^{[1
]}

CHEN, F ^{[1
]}

BEAUVAIS, L ^{[1
]}

SUN, YY ^{[1
]}

XUE, YY ^{[1
]}

CHU, CW ^{[1
]}

机构：

[1] UNIV HOUSTON, TEXAS CTR SUPERCONDUCT, HOUSTON, TX 77204 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 213卷 / 3-4期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1016/0921-4534(93)90440-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The high temperature superconducting Hg-Ba-Ca-Cu-O (HBCCO) compound system reported by Schilling et al. has been reproduced with an onset transition-temperature (T(c0)) up to approximately 140 K and a main transition at approximately 135 K, after proper heat-treatment. We found a positive pressure-effect on T(c) with a rate of 0.17 to 0.18 K/kbar and an irreversibility line at temperatures higher than that in the double Bi and Tl layered high temperature superconductors (HTS's). The observation suggests that the compounds synthesized by us are underdoped and further T(c) enhancement (although not drastic) is possible by proper doping, and the HBCCO system appears to be a better candidate than the double Bi and Tl layered HTS's for applications based on the higher irreversibility line.

引用

页码：261 / 265

页数：5

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