Validity of the phenomenological model for magnetocaloric effects in MnFeP2/3Si1/3

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-04-01 DOI:10.1016/j.rinp.2025.108231

Ahmed R. Galaly , Tahani R. Aldhafeeri , Sameh M. Elghnam , Mahmoud A. Hamad

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Abstract

Assessing the validity of the phenomenological model (PM) for the magnetocaloric effect (MCE) in MnFeP_2/3Si_1/3 is the aim of this study. Our work confirms PM for conventional MCE by simulating the MCE of MnFeP_2/3Si_1/3 at temperatures between 230 K and 310 K. Interestingly, there is a good degree of precision across the whole temperature range in the agreement between the simulated magnetic entropy change (10.1 J/kg.K) and the reported one. Additionally, MnFeP_2/3Si_1/3′s relative cooling power is evaluated to be 97 J/kg, and heat capacity change characterization is investigated. By reducing the time and effort required to calculate and measure MCE, these results imply that PM is a trustworthy model for investigating MCE in the sharp magnetic transition. Consequently, the PM is very useful for estimating the MCE of magnets, as the MnFeP_2/3Si_1/3 sample has a sharp magnetic transition. Consequently, we believe that the PM can also be used for predicting MCE parameters for any magnetic transition.

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MnFeP2/3Si1/3 中磁致效应现象学模型的有效性

本研究的目的是评估MnFeP2/3Si1/3中磁热效应（MCE）的现象学模型（PM）的有效性。我们的工作通过模拟mnfep2 / 3si /3在230 K和310 K之间的MCE，证实了传统MCE的PM。有趣的是，在整个温度范围内，模拟的磁熵变化（10.1 J/kg.K）与报道的磁熵变化之间的一致性有很好的精度。此外，mnfep2 / 3si /3的相对冷却功率为97 J/kg，并研究了热容量变化特性。通过减少计算和测量MCE所需的时间和精力，这些结果表明PM是研究急剧磁跃迁中MCE的可靠模型。因此，PM对于估计磁体的MCE非常有用，因为mnfep2 / 3si /3样品具有尖锐的磁转变。因此，我们认为PM也可以用于预测任何磁跃迁的MCE参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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