（La，R）（Fe，Mn，Si）13H（R=Ce和Pr）的磁热性能——朝着更好的合金设计方向发展，从而减少永磁体的体积并建立冷却系统的长期可靠性

IF 7 3区材料科学 Q1 ENERGY & FUELS

Journal of Physics-Energy Pub Date : 2023-08-02 DOI:10.1088/2515-7655/ace930

A. Fujita, K. Imaizumi

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引用次数: 0

摘要

从掺杂元素的选择等合金配方与控制MCE的基本物理之间的相关性出发，验证了La1−z Rz（Fe0.89−x Mn x Si0.11）13H y max（R=Ce和Pr）中的磁热效应（MCE）。z=0.3&x=0.017的Ce掺杂样品在285K的居里温度下，在0.8T的场变化下表现出峰值等温熵变Δ，居里温度的场依赖性增大和磁滞减小导致Pr掺杂样品在289K的居里温度下在0.8T的场变化下2.7K的绝热温度变化Δ。

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Magnetocaloric properties in (La,R)(Fe,Mn,Si)13H (R = Ce and Pr)—toward a better alloy design that results in a reduction in volume of permanent magnets and the establishment of long-term reliability in cooling systems

The magnetocaloric effect (MCE) in La1−z R z (Fe0.89−x Mn x Si0.11)13H y max (R = Ce and Pr) is verified in view of correlation between alloying recipes such as selection of doping elements and fundamental physics that governs MCE. The Ce-doped specimen with z = 0.3 & x = 0.017 exhibits a peaky isothermal entropy change ΔS M profile with a maximum value of 20 J kg−1 K under a field change of 0.8 T at the Curie temperature of 285 K. In contrast, the enlarged field dependence of the Curie temperature and diminished hysteresis results in the adiabatic temperature change ΔT ad of 2.7 K under a field change of 0.8 T at the Curie temperature of 289 K for the Pr-doped specimen.

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来源期刊

Journal of Physics-Energy Multiple-

CiteScore

10.90

自引率

1.40%

发文量

期刊介绍： The Journal of Physics-Energy is an interdisciplinary and fully open-access publication dedicated to setting the agenda for the identification and dissemination of the most exciting and significant advancements in all realms of energy-related research. Committed to the principles of open science, JPhys Energy is designed to maximize the exchange of knowledge between both established and emerging communities, thereby fostering a collaborative and inclusive environment for the advancement of energy research.