Phenomenological Modeling of Magnetocaloric Effect in La0.7SrxMnO3−δ

El-Sayed, Adly H.; Hamad, Mahmoud A.

doi:10.1007/s10948-018-4605-z

Cited by 20 publications

(3 citation statements)

References 35 publications

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“…For the theoretical description of magnetocaloric properties, on the basis of phenomenological model proposed by Hamad et al [21][22][23][24][25][26][27][28][29] the dependence of magnetization on temperature (T) and T C is presented by According to this model, the origin of magnetization is pure magnetic, where M i and M f are the initial and final values of magnetization of thermomagnetization curves with constant magnetic field in the proximity of ferromagnetic to paramagnetic transition, respectively. =…”

Section: Theoretical Formulationsmentioning

confidence: 99%

“…In the present manuscript, a phenomenological model proposed by Hamad et al [21][22][23][24][25][26][27][28][29] is applied for the simulation of the temperature dependence of magnetization to predict theoretically the MCE properties of (Mn 0.6 Fe 0.4 )NiSi 1−x Al x (x = 0.07 and 0.08) transition metal compounds. Subsequently, we have compared the values of magnetic entropy change ( ΔS ) obtained by the phenomenological method to those obtained experimentally by the Arrott plot method [17] of (Mn 0.6 Fe 0.4 )NiSi 1−x Al x (x = 0.07).…”

Section: Introductionmentioning

confidence: 99%

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Phenomenological Modeling of Thermomagnetic Properties and Magnetocaloric Effect of (Mn$$_{0.6}$$Fe$$_{0.4}$$)NiSi$$_{1-x}$$Al$$_{x}$$ ($$x = 0.07$$ and 0.08) Alloys

Pal

Datta

2021

J Supercond Nov Magn

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The magnetocaloric effect (MCE) of (Mn 0.6 Fe 0.4 )NiSi 1−x Al x ( x = 0.07 and 0.08) alloys has been investigated. A phenomenological model has been adopted for simulation of magnetization variation with temperature to investigate magnetocaloric properties such as magnetic entropy change, heat capacity change and relative cooling power. The results indicate the potential of this series of alloys to achieve the MCE at temperatures near Curie temperature ( T C ). These alloys present as prospective candidates for cooling system in a wide temperature interval in the vicinity of room temperature. The maximum change in entropy near T C obtained by phenomenological model has been compared with the Arrott plot method. The results confirm that the phenomenological model is undoubtedly beneficial for the prediction of the magnetocaloric effect of magnetic materials.

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Section: Theoretical Formulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phenomenological Modeling of Thermomagnetic Properties and Magnetocaloric Effect of (Mn$$_{0.6}$$Fe$$_{0.4}$$)NiSi$$_{1-x}$$Al$$_{x}$$ ($$x = 0.07$$ and 0.08) Alloys

Pal

Datta

2021

J Supercond Nov Magn

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“…It is important to mention that the MCE of LHSMO has not been studied before. We have adopted a phenomenological model [20][21][22][23][24][25][26][27][28][29] for the simulation of the temperature dependence of magnetization to predict theoretically the MCE properties of the LHSMO compounds for the first time. This yields further important properties like magnetic entropy change ( S), heat capacity change ( C), full width at half maximum (δT FWHM ), relative cooling power (RCP), etc., as these are the essential parameters for characterizing refrigeration capacity of any compound.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Magnetocaloric Effect in a New Perovskite Oxide La-=SUB=-0.7-x-=/SUB=-Ho-=SUB=-x-=/SUB=-Sr-=SUB=-0.3-=/SUB=-MnO-=SUB=-3-=/SUB=- (x=0.2 and 0.3)

2023

Physics of the Solid State

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The magnetocaloric effect (MCE) of La0.7-xHoxSr0.3MnO3 (x=0.2 and 0.3) perovskite oxides has been investigated. A phenomenological model is adopted for simulation of magnetization variation with temperature to investigate magnetocaloric properties such as magnetic entropy change, heat capacity change and relative cooling power. The results indicate the potential of this series of materials to achieve the MCE at temperatures near Curie temperature (TC). These compounds present as prospective candidates for cooling system in a wide temperature interval in the vicinity of room temperature. The results confirm that the phenomenological model is undoubtedly beneficial for the prediction of the magnetocaloric effect of magnetic materials. Moreover, the effect of holmium (Ho) doping in MCE of La0.7Sr0.3MnO3 has been discussed comparing the results obtained from our calculation for Ho-doped La0.7Sr0.3MnO3 and for non-doped La0.7Sr0.3MnO3 calculated earlier. Keywords: solid state magnetic refrigeration, phase transition, phenomenological model.

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