稀土磁体晶界磁各向异性及其矫顽力

IF 0.5 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI:10.2320/JINSTMET.JA201604

T. Yoshioka, H. Tsuchiura

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引用次数: 0

摘要

近年来，对Nd-Fe-B烧结磁体的实验研究表明，磁体晶界周围的原子结构对其矫顽力有决定性的影响。本文基于第一性原理计算和有效自旋模型，对烧结Nd- fe - b或稀土基永磁体中可能的矫顽力降低机制进行了理论综述，重点关注了Nd离子在界面结构上发现的异常局域磁各向异性。(doi: 10.2320 / jinstmet.JA201604)

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Magnetic Anisotropy Around Grain-Boundaries in Rare-Earth Magnets and Their Coercivity

Recently, several experimental studies for sintered Nd-Fe-B magnets have shown that their coercivity can be decisively affected by atomic structures around the grain boundaries in the magnets. In this article, a theoretical review is given on possible coercivity reduction mechanisms in sintered Nd-Fe-B or rare-earth based permanent magnets by focusing on the anomalous local magnetic anisotropy found for Nd ions on interfacial structures, based on first-principles calculations and an effective spin model. [doi:10.2320/jinstmet.JA201604]

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来源期刊

Journal of The Japan Institute of Metals 工程技术-冶金工程

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Information not localized