A structural study of chemical stability of (Y1-xCax)(Ba2-xLax)Cu3O7-delta (x=0.0, 0.2, and 0.4)

被引：4

作者：

Rajagopal, H ^{[1
]}

Sequeira, A ^{[1
]}

Ganguly, R ^{[1
]}

Yakhmi, JV ^{[1
]}

机构：

[1] BHABHA ATOM RES CTR,DIV CHEM,MUMBAI 400085,INDIA

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1996年 / 9卷 / 06期

关键词：

Y-123; structure; chemical stability; internal stress; puckering of Cu-O planes; neutron structure;

D O I：

10.1007/BF00728243

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Neutron structural studies are made on (Y1-xCax)(Ba2-xLax)Cu3O7-delta for compositions corresponding to x = 0.0, 0.2, and 0.4 in order to evaluate any correlation between the remarkably high chemical stability of the cosubstituted samples (x = 0.2 and 0.4) and the structural parameters. It is suggested that the increased chemical stability is caused by a decrease in the puckering of the Cu-O planes with increase in x, causing them to flatten, which leads to a reduction in the internal stresses existing in the perovskite lattice of this technologically important material.

引用

收藏

页码：615 / 618

页数：4

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