MICROSTRUCTURAL VARIATIONS AS A FUNCTION OF GAMMA IN LA2-XSRXNIO4+GAMMA

被引：3

作者：

SAYAGUES, MJ

CANEIRO, A

GONZALEZCALBET, JM

VALLETREGI, M

机构：

[1] INST MAGNET APLICADO,APDO 155,E-28230 MADRID,SPAIN

[2] CTR ATOM BARILOCHE,RA-8400 BARILOCHE,ARGENTINA

[3] UNIV COMPLUTENSE,FAC QUIM,DEPT QUIM INORGAN,E-28040 MADRID,SPAIN

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

来源：

JOURNAL OF MATERIALS RESEARCH | 1994年 / 9卷 / 05期

关键词：

D O I：

10.1557/JMR.1994.1263

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A microstructural characterization of the La2-xSrxNiO4+delta (0 less-than-or-equal-to X less-than-or-equal-to 1) system, prepared with accurate control of the oxygen content, has been performed. The electron diffraction study shows the evolution of the accommodation of compositional variations as a function of delta. For delta > 0.06, interstitial oxygens are ordered, leading to new K2NiF4 superstructural types. Samples with delta < 0.06 accommodate the nonstoichiometry by means of random distribution of anionic vacancies.

引用

页码：1263 / 1271

页数：9

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