(101) AND ((1)OVER-BAR-01) EXTENDED DEFECTS ACCOUNTING FOR THE NONSTOICHIOMETRY OF HIGH-TC SUPERCONDUCTING M2+/-DELTA-CUO4+/-DELTA PHASES (M2 = LA2-XSRX)

被引：16

作者：

GALY, J ^{[1
]}

机构：

[1] CNRS,CTR ELABORAT MAT & ETUD STRUCT,F-31400 TOULOUSE,FRANCE

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 1992年 / 48卷

关键词：

D O I：

10.1107/S0108768192006359

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Detailed structural interpretation of (101) and (101BAR) extended planar defects allows the formulae of the high-T(c) superconducting M2CuO4+delta M2+deltaCuO4+delta and M2-deltaCuO4-delta phases (M2 = La2-xSrx) to be more exactly expressed. The proposed interpretations comply with all the established crystal-chemistry rules, i.e. classical CuO6 octahedra and mono-, bi- and tricapped triangular prisms, MO7, MO8 and MO9 with normal Cu-O, M-O and O-O interatomic distances. They are new alternative explanations of the non-stoichiometry of these K2NiF4-related phases.

引用

页码：777 / 781

页数：5

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