Heavy rare earth free, free rare earth and rare earth free magnets - Vision and reality
Heavy rare earth free, free rare earth and rare earth free magnets - Vision and reality
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DOI：
10.1016/j.scriptamat.2018.01.032
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发表时间：
2018-09-01
影响因子：
6
通讯作者：
Gutfleisch, O.
中科院分区：
文献类型：
--
作者：
Skokov, K. P.;Gutfleisch, O.
通常认为，在用于永磁体的金属间相中，实际上没有一种可以完全实现其基于固有磁性能的潜力。我们讨论了导致这种限制的不同原因，称为布朗悖论，并提出了一些可能的方法来克服它。我们比较了（Nd_（1-x）Cex）（2）（Fe_（1-y）Coy）（14）B单晶的内禀磁性与由相同合金制成的烧结和热压磁体的外禀磁性。此外，在无RE材料，我们的结果得到的Mn和Co基无RE单晶相比，锰基永磁体的硬磁性能。(C)2018 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
It is commonly understood that among the intermetallic phases used for permanent magnets, practically none can fully realize its potential based on the intrinsic magnetic properties. We discuss different reasons leading to this limitation, known as the Brown paradox, and propose some possible ways of overcoming it We compare the intrinsic magnetic properties of (Nd1-xCex)(2)(Fe1-yCoy)(14)B single crystals with the extrinsic characteristics of sintered and hot compacted magnets made from the very same alloys. In addition, looking at RE-free materials, our results obtained on Mn- and Co-based RE-free single crystals are compared with the hard magnetic properties of Mn-based permanent magnets. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.