Synthesis and structure determination of new layered perovskite compound, KLaTa2O7

被引：17

作者：

Toda, K ^{[1
]}

Honma, T ^{[1
]}

Ye, ZG ^{[1
]}

Sato, M ^{[1
]}

机构：

[1] NIIGATA UNIV,FAC ENGN,DEPT CHEM & CHEM ENGN,NIIGATA 95021,JAPAN

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 249卷 / 1-2期

关键词：

potassium lanthanum tantalate; layered perovskite; ion-exchange reaction; crystal structure;

D O I：

10.1016/S0925-8388(96)02752-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new layered perovskite compound, KLaTa2O7, was synthesized by ion-exchange reaction from the rubidium compound, RbLaTa2O7. The crystal structure of KLaTa2O7 was determined by Rietveld analysis from powder X-ray diffraction patterns. It is analogous to the structure of the corresponding niobate compound. This layered perovskite compound is a new member of the Dion-Jacobson series with n=2 for the general formula A[M(n-1)B(n)O3(n+1)] (A= monovalent cations, B = Nb or Ta). The structural features of KLaTa2O7 are discussed by comparison with other compounds of the ALaTa(2)O(7) family and the titanate compounds.

引用

页码：256 / 259

页数：4

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