MICROSTRUCTURAL INVESTIGATION OF OXYGEN-DEFICIENT BAMNO3-Y HEXAGONAL PEROVSKITES

被引：37

作者：

GONZALEZCALBET, JM

PARRAS, M

ALONSO, JM

VALLETREGI, M

机构：

[1] UCM,RENFE,INST MAGNETISMO APLICADO,E-28230 MADRID,SPAIN

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

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1993年 / 106卷 / 01期

关键词：

D O I：

10.1006/jssc.1993.1268

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The oxygen deficiency in the reduction process of the 2H BaMnO3 hexagonal type leads to the introduction of BaO2.5 cubic layers in the starting hexagonal close packing. A high-resolution electron microscopy study of the BaMnO2.83 perovskite related oxide indicates that, as a function of the oxygen content and of the synthesis procedure, compositional variations in the BaMnO3-y system can be accommodated either by disordered intergrowths of both BaO3 hexagonal BaO2.5 cubic layers or by means of the formation of ordered hexagonal perovskite related phases. © 1993 Academic Press, Inc.

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页码：99 / 110

页数：12

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