Investigation of the magnetocaloric effect by means of theoretical models in Nd0.67Ba0.33MnO3 manganite

被引：0
|
作者：
Bandar Alzahrani
Mohamed Hsini
Sobhi Hcini
Abdessalem Dhahri
Mohamed Lamjed Bouazizi
机构：
[1] Prince Sattam Bin Abdulaziz University,College of Engineering
[2] University of Monastir,Laboratory of Physical Chemistry of Materials, Department of Physics, Faculty of Science of Monastir
[3] University of Kairouan,Research Unit of Valorization and Optimization of Exploitation of Resources, Faculty of Science and Technology of Sidi Bouzid
来源：
Applied Physics A | 2020年 / 126卷
关键词：
Magnetocaloric effect; Magnetization; Landau theory; Phenomenological model;
D O I：
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摘要：
In this paper, we have used the Landau theory to simulate the MCE in the Nd0.67Ba0.33MnO3 manganite. The expanding of the Gibb’s free energy as a function of magnetization to the eighth order has given better results than the developing at sixth order in modeling the magnetic entropy change. The second-order phase magnetic transition of Nd0.67Ba0.33MnO3 sample has been proved. Under low magnetic fields, a phenomenological model has been used to determine some magnetic properties for the sample. Theoretical calculations have been compared to the experimental results.
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