Study of Magnetic Entropy Change in Nd0.67Ba0.33Mn0.98Fe0.02O3 by Means of Theoretical Models

Hsini, Mohamed; Hcini, Sobhi; Zemni, S.

doi:10.1007/s10948-017-4167-5

Cited by 12 publications

(3 citation statements)

References 25 publications

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“…The generalized formulation of the molecular interaction according to the mean-field leads to a scaling method [22][23][24], which allows the direct estimation of several magnetic parameters from experimental data. The Weiss molecular mean-field theory -4 -combined to the Bean-Rodbell model [25,26], also allow to adequately simulate the magnetic and magnetocaloric properties and to verify the type of FM-PM phase transition of the magnetic system. In addition, the Landau's theory is able to study the MCE in ferromagnetic systems with magneto-elastic and magneto-electronic couplings [27][28][29][30].…”

Section: Iv)mentioning

confidence: 99%

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

et al. 2020

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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. The theoretical values of -∆SM determined using each theory agree well with the experimental ones estimated from Maxwell relations. In other part, a good agreement in the spontaneous magnetization values, Mspont(T), estimated from (-∆SM vs. M 2 ) and (H/M vs. M 2 ) data was found. Also, the values of the critical exponent (β) found from both methods are close and check that the mean field model is adequate to study the MCE in La0.6Ca0.2Na0.2MnO3 sample.

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Section: Iv)mentioning

confidence: 99%

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

et al. 2020

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“…Several numerical methods [9][10][11][12] can be exploited to solve the non-algebraic equation relating the magnetization M(H, T) to the applied magnetic eld H and the temperature T in the ferromagnetic material. The utility of theoretically efficient methods can be exploited to simplify data analysis.…”

Section: Introductionmentioning

confidence: 99%

Magnetocaloric effect and critical behavior of the La_0.75Ca_0.1Na_0.15MnO₃ compound

et al. 2023

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“…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%

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

Hamad

Alamri

2021

Preprint

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In this work, phenomenological model (PM) is used to simulate the magnetocaloric effect (MCE) of Nd0.5Sr0.5MnO3 (NSMO) sample synthesized at various values of temperature of calcination (Tcal). The results showed that MCE of NSMO samples depends strongly on Tcal, achieving that a conventional MCE for nanocrystalline NSMO samples. However, the thermomagnetic behavior of bulk NSMO sample NSMO contains both conventional MCE and inverse MCE. MCE of NSMO improves powerfully with increasing Tcal. The calcination process is concluded as a powerful tool for improving MCE for NSMO. Especially, NSMO parameters in MCE of some published works are better, with a value equal to or greater than the corresponding MCE parameters in the same value of ΔH. MCE of NSMO system, particularly for nitrogen and hydrogen liquefaction, covers an excellent temperature range is of interest for MR.

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Study of Magnetic Entropy Change in Nd0.67Ba0.33Mn0.98Fe0.02O3 by Means of Theoretical Models

Cited by 12 publications

References 25 publications

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

Magnetocaloric effect and critical behavior of the La_0.75Ca_0.1Na_0.15MnO₃ compound

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

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Study of Magnetic Entropy Change in Nd0.67Ba0.33Mn0.98Fe0.02O3 by Means of Theoretical Models

Cited by 12 publications

References 25 publications

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

Study of the Magnetocaloric Effect by Means of Theoretical Models in La0.6Ca0.2Na0.2MnO3 Manganite Compound

Magnetocaloric effect and critical behavior of the La0.75Ca0.1Na0.15MnO3 compound

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

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Magnetocaloric effect and critical behavior of the La_0.75Ca_0.1Na_0.15MnO₃ compound