Crystal structure and magnetic properties of A0.5La0.5Mn0.5Ru0.5O3 (A=Ca, Sr, Ba)

被引：11

作者：

Horikubi, T ^{[1
]}

Kamegashira, N ^{[1
]}

机构：

[1] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2000年 / 65卷 / 03期

关键词：

perovskite; Rietveld analysis; ruthenium; GdFeO3-type structure; ferromagnetism; spin-glass;

D O I：

10.1016/S0254-0584(00)00258-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New compounds A(0.5)La(0.5)Mn(0.5)Ru(0.5)O(3) (A=Ca, Ba) have been prepared and characterized by X-ray powder diffraction. The crystal structure of the perovskite A(0.5)La(0.5)Mn(0.5)Ru(0.5)O(3) (A=Ca, Ba) has been refined by Rietveld method with X-ray diffraction data. The crystal structure of Ba0.5La0.5Mn0.5Ru0.5O3 has a cubic symmetry with the space group Pm (3) over bar m (a=0.396313(8) nm, Z=1). And the crystal structure of Ca0.5La0.5Mn0.5Ru0.5O3 has an orthorhombic symmetry with the space group Pnma (a=0.55316(1), b=0.77530(2), c=0.54775(1) nm, Z=2). Ferromagnetic properties of A(0.5)La(0.5)Mn(0.5)Ru(0.5)O(3) (A=Ca, Sr, Ba) were seen at low temperature, Magnetic susceptibility data indicating low temperature transitions (<200 K) and spin-glass behavior, attributable to the long-range structural disorder of the B-site cations. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：316 / 319

页数：4

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