2020
DOI: 10.1007/s10909-020-02455-w
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Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

Abstract: In this work, an overview of the Weiss molecular mean-field theory, the Bean-Rodbell model, and the Landau theory is presented, providing the theoretical background for simulating the magnetocaloric properties for La0.6Ca0.2Na0.2MnO3 manganite. Results showed that sample exhibits second order ferromagnetic (FM)paramagnetic (PM) magnetic phase transition and relatively higher values of magnetic entropy change (-∆SM). In application point of view, this material can be used in magnetic refrigeration technology. T… Show more

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Cited by 12 publications
(3 citation statements)
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“…It is preferable to use MC materials that have a magnetic transition type of the second degree with a suitable Curie temperature (θ C ) as appropriate for use in a wide temperature range, including room temperature (Choura-Maatar et al, 2020;Henchiri et al, 2020;Laajimi et al, 2020). The current efforts are directed towards the use of manganite as an effective substance in MRs due to its great chemical stability during frequent use, lack of eddy current, ease of preparation, high electrical resistance, and the possibility of improving their properties through doping and changing the oxygen content (Alzahrani et al, 2020;Choura-Maatar et al, 2020;Henchiri et al, 2020;Laajimi et al, 2020). Felhi et al prepared La 0.5 Ca 0.1 Ag 0.4 MnO 3 (LCAMO) via the ceramic method and reported an increase in H ext and an increase in broad ferromagnetic (FM) phase transition of LCAMO covering room temperature under high H ext (Jeddi et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…It is preferable to use MC materials that have a magnetic transition type of the second degree with a suitable Curie temperature (θ C ) as appropriate for use in a wide temperature range, including room temperature (Choura-Maatar et al, 2020;Henchiri et al, 2020;Laajimi et al, 2020). The current efforts are directed towards the use of manganite as an effective substance in MRs due to its great chemical stability during frequent use, lack of eddy current, ease of preparation, high electrical resistance, and the possibility of improving their properties through doping and changing the oxygen content (Alzahrani et al, 2020;Choura-Maatar et al, 2020;Henchiri et al, 2020;Laajimi et al, 2020). Felhi et al prepared La 0.5 Ca 0.1 Ag 0.4 MnO 3 (LCAMO) via the ceramic method and reported an increase in H ext and an increase in broad ferromagnetic (FM) phase transition of LCAMO covering room temperature under high H ext (Jeddi et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Research on the properties of MCE and its applications has been growing both in the theoretical research [5][6][7][8][9][10][11][12] and in the experimental research [13][14][15][16][17][18][19]. From a theoretical point of view, statistical mechanics models are effective tools in the study of the thermodynamic and magnetic properties of materials.…”
Section: Introductionmentioning
confidence: 99%
“…With rapid steps, increased refrigeration efficiency, reduction in weight, greater mechanical stability, lower environmental impact, greater efficiency, lower noise levels and high cost-effectiveness, magnetocaloric refrigerator (MR) has developed into a strong alternative to gas refrigeration by magnetocaloric effect (MCE) [1][2][3][4][5][6]. In space applications, medical appliances, aerospace applications and food cooling, MR is a fundamental requirement [7][8][9][10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%