Dielectric anomaly and magnetic properties of multiferroic GaFe0.75Mn0.25O3

被引：16
|
作者：
Mohamed, Mohamed Bakr [1 ]
Hinterstein, Manuel [1 ]
Fuess, H. [1 ]
机构：
[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany
来源：
MATERIALS LETTERS | 2012年 / 85卷
关键词：
Multiferroics; Magnetic; Dielectric; Sol-gel; Mn; SOLID-STATE REACTION; FERROELECTRICITY; GAFEO3; GEL;
D O I：
10.1016/j.matlet.2012.07.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GaFe0.75Mn0.25O3 was synthesized by a sol-gel process. The X-ray diffraction pattern analysis using the Rietveld refinement method indicated that the sample has an orthorhombic structure. Magnetization measurement shows that GaFe0.75Mn0.25O3 has ferromagnetic behavior with T-C=212 K. Dielectric investigations revealed a temperature independent anomaly at around 255 K with frequency dispersion of dielectric constant. The low temperature high-resolution synchrotron data analysis shows that lattice parameters also reveal an anomaly at 225 K without a change in the crystal structure. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：102 / 105
页数：4
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