Crystal structures and phase transitions of Sr2CrSbO6

被引：51

作者：

Faik, A. ^{[1
]}

Igartua, J. M. ^{[1
]}

Gateshki, M. ^{[2
]}

Cuello, G. J. ^{[1
,3
,4
]}

机构：

[1] Euskal Herriko Unibertsitatea, Zientzia Fak, Bilbao 48080, Spain

[2] PANalytical, NL-7600 AA Lelyweg, Almelo, Netherlands

[3] Ikerbasque, F-38042 Grenoble, France

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 07期

关键词：

Double perovskite; X-ray diffraction; Crystal structure; Phase transitions; DOUBLE-PEROVSKITE OXIDES; MAGNETIC-PROPERTIES; NEUTRON-DIFFRACTION; TEMPERATURE; SR2FEMOO6; SB;

D O I：

10.1016/j.jssc.2009.04.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Sr2CrSbO6 was synthesized by the conventional solid-state reaction process. X-ray powder diffraction (XRPD) and neutron powder diffraction (NPD) has been used to reinvestigate the structure at room temperature and to Study the phase transitions at high- and low-temperature. Rietveld analysis revealed that Sr2CrSbO6 crystallizes at room temperature in a monoclinic system having a space group I2/m, with a = 5.5574(1)angstrom; b = 5.5782(1)angstrom; c = 7.8506(2)angstrom and beta = 90.06(2), no P2(1)/n space group as was previously reported. The high-temperature study (300-870 K) has shown that the compound presents the following temperature induced phase-transition sequence: 12/m-I4/m-Fm-3m. The low-temperature study (100-300 K) demonstrated that the room-temperature 12/m monoclinic symmetry seems to be stable down to 100 K. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：1717 / 1725

页数：9

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