Interface roughness influence on exchange bias effect in La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 bilayers

被引:0
作者
E. Restrepo-Parra
G. Orozco-Hernández
J. Urrea-Serna
J. F. Jurado
J. C. Vargas-Hernández
J. C. Riaño-Rojas
J. Restrepo
机构
[1] Universidad Nacional de Colombia-Sede Manizales,Departamento de Física y Química
[2] Universidad Nacional de Colombia-Sede Manizales,Departamento de Matemáticas y Estadística
[3] Universidad de Antioquia,Grupo de Magnetismo y Simulación G, Instituto de Física
来源
Journal of Materials Science | 2010年 / 45卷
关键词
Manganite; Coercive Force; Coercive Field; Exchange Bias; Monte Carlo Step;
D O I
暂无
中图分类号
学科分类号
摘要
A Monte Carlo simulation study of La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 bilayers exchange bias (EB) properties by using a classical Heisenberg model and Monte Carlo method with Metropolis algorithm is addressed. Samples were built atom-by-atom in order to resemble the real roughness. In this model, several contributions included nearest neighbors exchange interactions; two different interface couplings, magnetocrystalline anisotropy and Zeeman term, were considered. Here, an influence of the relaxation steps on the interface roughness is present. Our study focuses on the influence of interface roughness on hysteresis loops, particularly EB field (Hex) and coercive force (Hc). Results reveal that Hex and Hc decrease as the interface roughness increases.
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页码:6763 / 6768
页数:5
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