Structural chemistry of new ion-exchangeable tantalates with layered perovskite structure:: New Dion-Jacobson phase MCa2Ta3O10 (M = alkali metal) and Ruddlesden-Popper phase Na2Ca2Ta3O10

被引：44

作者：

Toda, K

Teranishi, T

Ye, ZG

Sato, M

Hinatsu, Y

机构：

[1] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Niigata 9502181, Japan

[2] Hokkaido Univ, Grad Sch Sci, Div Chem, Sapporo, Hokkaido 0600810, Japan

来源：

MATERIALS RESEARCH BULLETIN | 1999年 / 34卷 / 06期

基金：

日本学术振兴会;

关键词：

layered compounds; intercalation reactions; X-ray diffraction; crystal structure;

D O I：

10.1016/S0025-5408(99)00084-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New layered perovskites, MCa2Ta3O10 (M = alkali metal), were synthesized by a solid-state reaction and an ion-exchange reaction. The crystal structures were refined from powder X-ray diffraction (XRD) patterns by Rietveld analysis. These compounds are new members of the Dion-Jacobson series with n = 3 for the general formula M[A(n-1)B(n)O(3n+1)] (M = alkali metal, B = Nb). In addition, a new reduced tantalate, Na2Ca2Ta3O10, was synthesized by intercalation reaction from the parent sodium compound, NaCa2Ta3O10. This intercalation compound is the first example of the Ruddlesden-Popper-type tantalate. The stacking feature of the perovskite layer is discussed on the basis of the results obtained from the structure refinement. The stacking sequences are dependent on space volume sizes formed between the perovskite layers. (C) 1999 Elsevier Science Ltd.

引用

页码：971 / 982

页数：12

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