Superconducting transitions of BiSrCaCu2Ox quenched from high temperatures

被引：0

作者：

Ishida, Takekazu ^{[1
]}

Sakuma, Takashi ^{[1
]}

机构：

[1] Ibaraki Univ, Japan

来源：

Japanese Journal of Applied Physics, Part 2: Letters | 1988年 / 27卷 / 07期

关键词：

Ceramic Materials - Oxides - Superconductivity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The BiSrCaCu2Ox specimens have been quenched from various elevated temperatures (200°C-860°C) to liquid nitrogen. The X-ray diffraction study revealed that the crystalline structure of specimen is essentially tetragonal. We found that the lower Tc as well as the higher Tc vary remarkably but differently as a function of a quenching temperature Tq. We present evidence that the opposite Tc variation observed between 400°C and 700°C cannot be attributed to a microscopic interaction between two phase but might be inherent.

引用

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