The Bi2O3-Fe2O3-Sb2O5 system phase diagram refinement, Bi3FeSb2O11 structure peculiarities and magnetic properties

被引：8

作者：

Egorysheva, A. V. ^{[1
]}

Ellert, O. G. ^{[1
]}

Gajtko, O. M. ^{[1
]}

Efimov, N. N. ^{[1
]}

Svetogorov, R. D. ^{[2
]}

Zubavichus, Y. V. ^{[2
]}

Grigorieva, A. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[2] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia

[3] Moscow MV Lomonosov State Univ, Dept Mat Sci, Moscow 119991, Russia

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 225卷

关键词：

Bi2O3-Fe2O3-Sb2O5; system; Phase equilibria; Bi3FeSb2O11; KSbO3-type structure; Magnetic properties; COMPLEX BISMUTH OXIDES; CRYSTAL-STRUCTURE; RAMAN-SCATTERING; PYROCHLORE; BI3RU3O11;

D O I：

10.1016/j.jssc.2014.12.032

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The refinement of the Bi2O3-Fe2O3-Sb2O5 system phase diagram has been performed and the existence of the two ternary compounds has been confirmed. The first one with a pyrochlore-type structure (sp. gr. Fd (3) over barm) exists in the wide solid solution region. (Bi2-xFex)Fe1+ySb1+yO7 +/-delta, where x=0.1-0.4 and y=-0.13-0.11. The second one. Bi3FeSb2O11, corresponds to the cubic KSbO3-type structure (sp. gr. Pn (3) over bar) with unit cell parameter a=9.51521(2) angstrom. The Rietveld structure refinement showed that this compound is characterized by disordered structure. The Bi3FeSb2O11 factor group analysis has been carried out and a Raman spectrum has been investigated. According to magnetization measurements performed at the temperature range 2-300 K it may be concluded that the Bi3FeSb2O11 magnetic properties can be substantially described as a superposition of strong short-range antiferromagnetic exchange interactions realizing inside the [(FeSb2)O-9] 3D-framework via different pathways. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：278 / 284

页数：7

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