Synthesis, structure and magnetic properties of A2MnB′O6 (A = Ca, Sr; B′ = Sb, Ta) double perovskites

被引：53

作者：

Mandal, Tapas Kumar ^{[1
]}

Poltavets, Viktor V. ^{[1
]}

Croft, Mark ^{[2
]}

Greenblatt, Martha ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2008年 / 181卷 / 09期

基金：

美国国家科学基金会;

关键词：

oxide; X-ray diffraction; crystal structure; magnetic properties; X-ray absorption spectroscopy (XAS);

D O I：

10.1016/j.jssc.2008.04.038

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A(2)MnB'O-6 (A = Ca, Sr; B = Sb, Ta) double perovskites have been synthesized and their structural and magnetic properties have been investigated. Rietveld refinement of the powder X-ray diffraction data for Sr2MnSbO6 indicated significant ordering of Mn and Sb at the B-site while all other phases showed mostly a random distribution of the B-site cations. X-ray absorption spectroscopic data established the presence of Mn in the 3+ and Sb/Ta in the 5+ oxidation states in all the phases. Magnetic susceptibility data indicated ferromagnetic correlations for all the A(2)MnB'O-6 phases with Weiss temperatures varying from 64 to 107 K. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：2325 / 2331

页数：7

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