Structural transition and atomic ordering in the non-stoichiometric double perovskite Sr2FexMo2-xO6

被引：58

作者：

Liu, GY

Rao, GH ^{[1
]}

Feng, XM

Yang, HF

Ouyang, ZW

Liu, WF

Liang, JK

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China

[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110015, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 353卷 / 1-2期

关键词：

transition metal compounds; oxide materials; crystal structure; X-ray diffraction;

D O I：

10.1016/S0925-8388(02)01316-6

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：

The structural transition and atomic ordering of a new series of ordered double perovskite oxides Sr2FexMo2-xO6 (0.8 less than or equal to x less than or equal to 1.5) have been studied by X-ray powder diffraction (XRD). Rietveld refinement of the powder diffraction profiles indicates that the crystal structure of the compounds Sr2FexMo2-xO6 changes from a tetragonal I4/mmm lattice to a cubic Fm(3)over-bar-m lattice around x = 1.2 and the lattice parameters decrease slightly as Fe content increases. The degree of ordering in Sr2FexMo2-xO6 exhibits a maximal at x = 0.95 and decreases as x deviates from 0.95. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：42 / 47

页数：6

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