Neutron scattering study of the magnetoelectric compound GaFeO3

被引：16

作者：

Hatnean, M. ^{[1
,2
]}

Robert, J. ^{[2
]}

Diaz, M. T. Fernandez ^{[2
]}

Ressouche, E. ^{[3
]}

Cousson, A. ^{[2
]}

Pinsard-Gaudart, L. ^{[1
]}

Petit, S. ^{[2
]}

机构：

[1] Univ Paris 11, ICMMO UMR 8182, F-91405 Orsay, France

[2] CE Saclay, LLB, CEA CNRS UMR12, F-91191 Gif Sur Yvette, France

[3] DRFMC SPSMS MDN, CEA Grenoble, INAC, F-38054 Grenoble 9, France

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2012年 / 213卷 / 01期

关键词：

European Physical Journal Special Topic; Spin Wave; Magnetic Transition Temperature; Brillouin Zone Centre; Physical Journal Special Topic Table;

D O I：

10.1140/epjst/e2012-01664-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a neutron scattering study carried out on single-crystals of the magnetoelectric compound GaFeO3, prepared by the floating-zone (FZ) method. The refinement of the crystal structure indicates the existence of a large amount of iron on the gallium site, corresponding to a strong internal substitution disorder. We show that the Ga/Fe disorder and the magnetic transition temperature are weakly dependent on the growth conditions. The disorder also affects the magnetic excitations; our measurements evidence damped spin waves, well defined only close to the Brillouin zone centre.

引用

页码：69 / 76

页数：8

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