Antiferromagnetic resonance of polycrystalline BiMn2O5

被引：2
|
作者：
Santana, V. T. [1 ,2 ,4 ]
Walmsley, L. [2 ]
Fier, I. [2 ]
Eichel, R. -A. [3 ]
Jakes, P. [3 ]
Chumak, I. [4 ]
Ozarowski, A. [5 ]
van Tol, J. [5 ]
Nascimento, O. R. [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Estadual Paulista UNESP, Inst Geociencias & Ciencias Exatas, Dept Fis, BR-13500970 Rio Claro, SP, Brazil
[3] Forschungszentrum Julich, Inst Energie & Klimaforsch IEK 9, D-52425 Julich, Germany
[4] Inst Angew Mat IAM ESS, D-76344 Eggenstein Leopoldshafen, Germany
[5] Florida State Univ, Ctr Interdisciplinary Magnet Resonance, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
来源：
SOLID STATE COMMUNICATIONS | 2015年 / 207卷
关键词：
Multiferroics; Magnetic anisotropy; Antiferromagnetic resonance;
D O I：
10.1016/j.ssc.2015.02.007
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Multi-frequency electron spin resonance (ESR) measurements in polycrystalline samples of BiMn2O5 were employed to observe antiferromagnetic resonances (AFMR) in the range 0-14 A below the Neel temperature. The experimental data were analyzed using the phenomenological theory of Yosida and Nagamiya. Three resonance modes were identified in the xz (ac) plane from the data at 5 K. Macroscopic constants of anisotropy K-1 = 12.5 x 10(6) erg/cm(3) and K-2 = 7.0 x 10(6) erg/cm(3) were calculated allowing for the single-site anisotropy constant K' to be estimated at T=0 K. The obtained value shows reasonable agreement with theoretical predictions. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：40 / 43
页数：4
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