Manganese-based permanent magnet materials
Manganese-based permanent magnet materials
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DOI：
10.1016/j.pmatsci.2021.100872
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发表时间：
2021-09
影响因子：
37.4
通讯作者：
Thomas Keller;I. Baker
中科院分区：
文献类型：
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作者：
Thomas Keller;I. Baker
近年来，锰基永磁材料作为稀土 (RE) 金属永磁体的潜在替代品，已成为重要的研究活动领域。当锰化合物被加工成具有坚固的质地时，能够获得相对高的能量积BH。研究发现了三种有前景的锰基永磁体化合物：Mn-Ga、Mn-Bi 和 Mn-Al。虽然计算表明这些化合物无法达到稀土磁体的理论最大磁能积 (BH)max，但当前的研究表明它们可以填补廉价但低性能的铁氧体和昂贵的高性能稀土磁体之间的性能差距。许多研究人员通过多种方法生产锰基磁体，这些方法分为三个基本类别：批量加工、颗粒加工和薄膜沉积。本综述讨论了每种化合物的各种加工方法及其对微观结构和由此产生的磁性能的影响。我们还提出了未解决的问题并概述了未来研究的机会。
Manganese-based permanent magnetic materials have become an area of significant research activity in recent years as a potential alternative to permanent magnets based on Rare Earth (RE) metals. Manganese compounds are capable of achieving a relatively high energy product,BH, when processed to have a strong texture. Research has identified three promising compounds for Mn-based permanent magnets: Mn-Ga, Mn-Bi, and Mn-Al. While calculations show that these compounds cannot achieve the theoretical maximum energy products, (BH)max, of RE magnets, current research suggests than they can fill the property gap between inexpensive, but low-performance, ferrites and expensive high-performance RE magnets. Many researchers have produced Mn-based magnets through a variety of methods that fall into three basic categories: bulk processing, particulate processing, and thin film deposition. This review discusses the various processing methods for each compound and their impact on the microstructure and resulting magnetic properties. We also present unresolved questions and outline opportunities for future research.