Monte Carlo Study of the Magnetic and Magnetocaloric Properties of La1-xCaxMnO3 (x=0.33 and 0.5)

被引：9

作者：

Pavlukhina, O. ^{[1
]}

Buchelnikov, V. ^{[1
]}

Sokolovskiy, V. ^{[1
]}

Zagrebin, M. ^{[1
]}

机构：

[1] Chelyabinsk State Univ, Chelyabinsk 454001, Russia

来源：

MAGNETISM AND MAGNETIC MATERIALS V | 2012年 / 190卷

关键词：

Monte Carlo simulation; Manganite; Magnetocaloric effect;

D O I：

10.4028/www.scientific.net/SSP.190.347

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In our work the temperature dependencies of magnetization, entropy changes, and the Curie temperature (T-C) of La1-xCaxMnO3 (x = 0.33 and 0.5) were investigated using Monte Carlo method and Heisenberg model. In our simulation, magnetic Mn3+ and Mn4+ ions are described by classical Heisenberg spins, while oxygen, lanthanum and calcium ions are considered as nonmagnetic. The Mn magnetic ions are distributed on a simple cubic lattice according to the perovskite structure of the manganite. The theoretical Curie temperatures and magnetocaloric values are in a good agreement well with experimental data.

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收藏

页码：347 / 350

页数：4

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