Effect of substituting potassium for barium on the superconductivity of RBa2Cu3O7(R=y and Eu)

被引：0

作者：

Felner, I. ^{[1
]}

Kowitt, M. ^{[1
]}

Lehavi, Y. ^{[1
]}

Ben-Dor, L. ^{[1
]}

Wolfus, Y. ^{[1
]}

Barbara, B. ^{[1
]}

Nowik, I. ^{[1
]}

机构：

[1] Hebrew Univ of Jerusalem, Israel

来源：

Physica C: Superconductivity and its Applications | 1988年 / 153-55卷 / 01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：

We have studied the crystal structure and magnetic susceptibility of high Tc single phase RBa2-xKxCu3O7-δ, where x=0 to 1 and R=Y, Eu. All the YBa2-xKxCu3O7-delta samples have the same orthorhombic crystal structure and are superconducting with almost the same Tc. In EuBa2-xKxCu3O7 the crystal structure changes from orthorhombic to tetragonal and a progressive decrease in Tc is observed when x is increased. EuBaKCu3O7-delta is not superconducting. The decrease in the cation charge reduces both the oxygen concentration and the average valency of the copper.

引用

页码：898 / 899