Numerical simulation of magnetic interactions in polycrystalline YFeO3

被引：29

作者：

Lima, E., Jr. ^{[1
]}

Martins, T. B. ^{[1
]}

Rechenberg, H. R. ^{[1
]}

Goya, G. F. ^{[1
]}

Cavelius, C. ^{[2
]}

Rapalaviciute, R. ^{[2
]}

Hao, S. ^{[2
]}

Mathur, S. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[2] Leibniz Inst New Mat, CVD Div, D-66123 Saarbrucken, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

yttrium orthoferrite; weak-ferromagnetism; Dzyaloshinsky-Moriya interaction; spin reorientation transitions;

D O I：

10.1016/j.jmmm.2007.07.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic behavior of polycrystalline yttrium orthoferrite was studied from the experimental and theoretical points of view. Magnetization measurements up to 170 kOe were carried out on a single-phase YFeO3 sample synthesized from heterobimetallic alkoxides. The complex interplay between weak-ferromagnetic and antiferromagnetic interactions, observed in the experimental M(H) curves, was successfully simulated by locally minimizing the magnetic energy of two interacting Fe sublattices. The resulting values of exchange field (H-E = 5590 kOe), anisotropy field (H-A = 0.5 kOe) and Dzyaloshinsky-Moriya antisymmetric field (H-D = 149 kOe) are in good agreement with previous reports on this system. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：622 / 629

页数：8

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