Modulated structure of La2NiO4+delta as a mechanism of oxygen excess accommodation

被引：14

作者：

Sayagues, MJ

ValletRegi, M

Hutchison, JL

GonzalezCalbet, JM

机构：

[1] UNIV COMPLUTENSE MADRID,FAC FARM,DEPT QUIM INORGAN & BIOINORGAN,E-28040 MADRID,SPAIN

[2] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1996年 / 125卷 / 02期

关键词：

D O I：

10.1006/jssc.1996.0275

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A microstructural characterization by means of high resolution transmission electron microscopy has been performed in La2NiO4+delta in order to confirm the distribution of the oxygen excess. A structure commensurately modulated along [010] with modulation period a(s) = 3a, and another with b(s) = 4b along [100] were found. The origin of such modulations is discussed in terms of the irregular distribution of interstitial oxygen atoms within the crystal lattice. Although the structural changes may be electron beam induced and these new phases are minorities and possibly metastable, the results contribute new information about how the interstitial oxygen can be accommodated. (C) 1996 Academic Press, Inc.

引用

页码：133 / 139

页数：7

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