Structural trends in pyrochlore-type oxides

被引：56

作者：

Kennedy, BJ ^{[1
]}

机构：

[1] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

来源：

PHYSICA B-CONDENSED MATTER | 1997年 / 241卷

基金：

澳大利亚研究理事会;

关键词：

pyrochlore oxides; powder neutron diffraction; non-stoichiometric oxides;

D O I：

10.1016/S0921-4526(97)00570-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Structural trends in some Fyrochlore-type A(2)B(2)O(7) oxides are reviewed and some new structural data is presented. Powder neutron diffraction data have shown that, for B = Ru or Ir, the presence of an easily polarisable cation on the pyrochlore A site and anion vacancies results in structural changes consistent with the oxidation of the B-type cation. An explanation for this observation is presented. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：303 / 310

页数：8

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