室温磁制冷用Fe47.5Ni37.5Mn15体和纳米颗粒的磁热效应

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-06-19 DOI:10.1016/j.jallcom.2025.181743

Chang-Gi Lee , Varatharaja Nallathambi , TaeHyeok Kang , Leonardo Shoji Aota , Sven Reichenberger , Ayman A. El-Zoka , Pyuck-Pa Choi , Baptiste Gault , Se-Ho Kim

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引用次数: 0

摘要

在室温下工作而不使用对环境有害物质的磁性冰箱的开发是环保技术的重大进步。这些冰箱采用磁热效应（MCE），传统上使用昂贵的稀土元素（如钆）来实现。为了促进商业化，有必要研究替代材料，如过渡金属合金。在本研究中，成功地铸造出了具有接近室温居里温度的Fe47.5Ni37.5Mn15合金。在2 T和5 T下，合金的冷却能力分别为88.26 J/kg和297.68 J/kg。这项研究强调了过渡金属合金设计用于室温磁制冷的潜力，并为自上而下利用超顺磁性的方法提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Magnetocaloric effect of Fe47.5Ni37.5Mn15 bulk and nanoparticles for room temperature magnetic refrigeration

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Magnetocaloric effect of Fe47.5Ni37.5Mn15 bulk and nanoparticles for room temperature magnetic refrigeration

The development of magnetic refrigerators that operate at room temperature without the use of environmentally harmful substances represents a significant advancement in eco-friendly technology. These refrigerators employ the magnetocaloric effect (MCE), which has traditionally been achieved using expensive rare-earth elements such as gadolinium. To facilitate commercialization, it is essential to investigate alternative materials, such as transition metal alloys. In this study, an Fe_47.5Ni_37.5Mn₁₅ alloy, which exhibits a Curie temperature near room temperature, was successfully cast. The alloy demonstrated cooling powers of 88.26 J/kg at 2 T and 297.68 J/kg at 5 T. This study highlights the potential of transition-metal alloy design for room-temperature magnetic refrigeration and offers insights into a top-down approach for utilizing superparamagnetism.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.