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.
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页码：841 / 848
页数：7
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