SUPERCONDUCTING AND MAGNETIC PROPERTIES OF Bi2Sr2 Ca1 - //xY//xCu2O//y(0 less than equivalent to x less than equivalent to 1).

被引：0

作者：

Yoshizaki, R. ^{[1
]}

Saito, Y. ^{[1
]}

Abe, Y. ^{[1
]}

Ikeda, H. ^{[1
]}

机构：

[1] Univ of Tsukuba, Tsukuba, Jpn, Univ of Tsukuba, Tsukuba, Jpn

来源：

Physica C: Superconductivity and its Applications | 1988年 / 152卷 / 01期

关键词：

BISMUTH COMPOUNDS - Electric Conductivity - CERAMIC MATERIALS;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The effect of substitution of Y atoms for Ca atoms has been studied in the Bi//2Sr//2Ca//1// minus //xY//xCu//2O//y compound system. For X less than 0. 5, superconductivity is observed and its fractional volume is reduced with increasing x, though the transition temperature of about 85 K is maintained. For X greater than equivalent to 0. 5 samples, the electrical resistivity behavior can be well described by the three-dimensional variable range hopping conduction, indicating that the system is essentially insulating. In this range of x, magnetic susceptibility shows spin-glass-type cusp at 13 K in the heating process after zero-field cooling and an enhanced cusp at 11 K in the field-cooling process. In the temperature range above about 150 K the Curie-Weiss dependence holds well with a positive paramagnetic Curie temperature, which increases to 40 K with increasing x in the insulating region.

引用

页码：408 / 412

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