NEUTRON-DIFFRACTION STUDY OF THE SUPERCONDUCTOR CABALACU3O7-DELTA

被引：12

作者：

RAJAGOPAL, H ^{[1
]}

SEQUEIRA, A ^{[1
]}

GUNASEKARAN, RA ^{[1
]}

GOPALAKRISHNAN, IK ^{[1
]}

YAKHMI, JV ^{[1
]}

IYER, RM ^{[1
]}

机构：

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

来源：

PHYSICA B | 1991年 / 174卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(91)90632-O

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The neutron profile refinement of Ca1.1BaLaCu3O7-delta (T(c) = 71 K) shows that it has an orthorhombic structure, similar to that of YBa2Cu3O7 (Pmmm, a = 3.886(3) angstrom, b = 3.850(3) angstrom, c = 11.660(8) angstrom). The corresponding Y-sites are occupied by La- and Ca-ions in 0.31:0.69 proportion, while the Ba-sites are occupied by Ba-, La- and Ca-ions in the proportion 0.50:0.14:0.36. The structure of Ca1.1BaLaCu2.8Zn0.2O7-delta (T(c) = 30 K) is also presented.

引用

页码：372 / 377

页数：6

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