The Inhibitory Effect of Magnetism on the Thermal Transport in Nd-Ce-Fe-B Sintered Magnet

IF 2.5 4区工程技术 Q3 CHEMISTRY, PHYSICAL

International Journal of Thermophysics Pub Date : 2024-12-18 DOI:10.1007/s10765-024-03484-3

Bo Peng, Jinyuan Xu, Jianhua Xu, Xiong Zheng, Huimin Wang, Peng Tan, Zhenzhen Qin, Guangzhao Qin

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引用次数: 0

Abstract

Understanding the influence of magnetism on thermal transport is crucial for ensuring the stability and reliability of heat dissipation in magnetic devices. In this study, we examine the magnetism's impact on thermal transport using the widely utilized Nd-Ce-Fe-B sintered magnet as our focal point. By integrating transient hot wire measurements and multiscale simulations, we assess how magnetism affects thermal conductivity (κ) between its ferromagnetic (FM) and paramagnetic (PM) states. Our analysis reveals that the thermal conductivity in the FM state is lower than in the PM state, indicating magnetism's inhibitory effect on thermal transport in Nd-Ce-Fe-B magnet. This phenomenon can be attributed to the suppressed electron transport in the FM state, which effectively reduces the electronic contribution to κ. To validate our findings, we conduct practical heating experiments at the device level alongside multiscale simulations. This research would significantly contribute to the understanding of thermal transport in magnetic materials, laying the groundwork for the thermal design of innovative devices that incorporate magnetism.

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磁性对 Nd-Ce-Fe-B 烧结磁体热传输的抑制作用

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来源期刊

International Journal of Thermophysics 物理-力学

CiteScore

4.10

自引率

9.10%

发文量

179

审稿时长

5 months

期刊介绍： International Journal of Thermophysics serves as an international medium for the publication of papers in thermophysics, assisting both generators and users of thermophysical properties data. This distinguished journal publishes both experimental and theoretical papers on thermophysical properties of matter in the liquid, gaseous, and solid states (including soft matter, biofluids, and nano- and bio-materials), on instrumentation and techniques leading to their measurement, and on computer studies of model and related systems. Studies in all ranges of temperature, pressure, wavelength, and other relevant variables are included.