The Mean-Field Theory for the Study of the Magnetocaloric Effect of Nd0.67Ba0.33Mn0.98Fe0.02O3 Manganite

被引：0

作者：

Mohamed Hsini

Sobhi Hcini

Michel Boudard

Sadok Zemni

机构：

[1] University of Monastir,Laboratory of Physical Chemistry of Materials, Faculty of Science of Monastir, Department of Physics

[2] University of Kairouan,Research Unit of Valorization and Optimization of Exploitation of Resources, Faculty of Science and Technology of Sidi Bouzid, University Campus Agricultural City

[3] Univ. Grenoble Aples,LMGP

[4] CNRS,undefined

来源：

Journal of Superconductivity and Novel Magnetism | 2018年 / 31卷

关键词：

Mean-field theory; Bean-Rodbell model; Magnetization; Magnetocaloric effect;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, we exploit the mean-field theory and the Bean-Rodbell model to justify the magnetocaloric effect (MCE) on Nd0.67Ba0.33Mn0.98Fe0.02O3 manganite. The modeling of magnetic properties was investigated. The Bean-Rodbell equation of state leads the system to second-order ferromagnetic (FM)-paramagnetic (PM) phase transition. The expressions describing the magnetic entropy change under the influence of magnetic field have been derived. A large magnetic entropy has been observed in our sample with a peak centered on the Curie temperature. The theoretical calculations are compared with experimental behavior.

引用

页码：841 / 848

页数：7