Cation deficiency in (Ba,Sr)Co1-xOy hexagonal perovskite related oxides:: New members of the An+2B′ BnO3n+3 homologous series

被引：55

作者：

Boulahya, K ^{[1
]}

Parras, M ^{[1
]}

González-Calbet, JM ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Quim, Dept Quim Inorgan, E-28040 Madrid, Spain

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1999年 / 142卷 / 02期

关键词：

homologous series A(n+2)B ' BnO3n+3; new Ba/Co ratio in; 2H related perovskites; cation deficiency in; Ba3O9 and Ba3CoO6 hexagonal stacking; electron diffraction and microscopy;

D O I：

10.1006/jssc.1998.8057

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new phases (Ba0.5Sr0.5)(7)Co6O18, Ba8Co7O21, and Ba9Co8O12 have been shown by electron diffraction and high-resolution electron microscopy to be three new members (n = 5, n = 6, and n = 7) of the 2H hexagonal perovskite-related A(n+2)B'BnO3n+3 homologous series. Their modulated structures are made up of chains, running along the c direction and separated by Ba(Sr) ions, containing a succession of one Co atom in prismatic trigonal sites and it Co atoms in octahedral coordination sharing faces. The strategy to synthesize different terms of this family is discussed in terms of the distance between AO(3) layers, (C) 1999 Academic Press.

引用

页码：419 / 427

页数：9

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