STUDY OF THE FORMATION OF THE HIGH-TEMPERATURE SUPERCONDUCTING PHASE IN BISRCACU2OY BY MICROWAVE-ABSORPTION

被引：7

作者：

CUVIER, S

PURI, M

BEAR, J

KEVAN, L

机构：

[1] UNIV HOUSTON,DEPT CHEM,HOUSTON,TX 77204

[2] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 09期

关键词：

D O I：

10.1021/j100372a095

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formation of the 120 K superconducting phase in the BiSrCaCu2Oy system has been investigated by microwave absorption. This material is characterized by an intense low-field microwave absorption (LFMA) below the superconducting transition temperature Tc and a g = 2 electron spin resonance (ESR) signal above Tc. LFMA is shown to be particularly effective and discriminatory for following the formation of the high-Tc phases in this system. The purity of these superconducting phases is also reflected by the intensity of the g = 2 signal. Various stages of sample preparation are studied to follow the formation of the 120 K phase. LFMA and ESR results are also compared and contrasted with resistance measurements. © 1990 American Chemical Society.

引用

页码：3864 / 3868

页数：5

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