THERMODYNAMIC PHASE TRANSITION OF A MAGNETIC SYSTEM Curie Temperature Predicted by the Monte Carlo Method

被引：1

作者：

Dong, Peng-Fei ^{[1
,2
]}

Yan, Zai-Zai ^{[1
]}

机构：

[1] Inner Mongolia Univ Technol, Sci Coll, Hohhot, Peoples R China

[2] Hohhot Minzu Coll, Dept Math, Hohhot, Peoples R China

来源：

THERMAL SCIENCE | 2020年 / 24卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Monte Carlo method; thermodynamics; phase transition temperature; needle throwing experiment; FERROMAGNETISM;

D O I：

10.2298/TSCI2004295D

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Curie temperature is an important parameter in the second-order thermodynamic phase transition of a magnetic system. However, the classical Heisenberg's mean field theory tends to overestimate heavily the temperature. In order to solve this problem, firstly, the structure offerromagnetic and spin-glassy materials in a magnetic system is established by the Ising model. Secondly, the respective energy offerromagnetic and spin glass states is calculated by Monte Carlo method. Finally, Curie temperature is predicted through the obtained energy, which agrees well with experimental data. A new strategy to estimate accurately Curie temperature is presented.

引用

页码：2295 / 2299

页数：5

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