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基于SmFe的永磁体的最新进展。

Recent advances in SmFe-based permanent magnets.

作者信息

Takahashi Y K, Sepehri-Amin H, Ohkubo T

机构信息

Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, Japan.

出版信息

Sci Technol Adv Mater. 2021 Jun 22;22(1):449-460. doi: 10.1080/14686996.2021.1913038.

DOI:10.1080/14686996.2021.1913038
PMID:34211334
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8221137/
Abstract

To realize a sustainable society, 'green technology' with low (or even zero) CO emissions is required. A key material in such technology is a permanent magnet because it is utilized for electric-power conversion in several applications including electric vehicles (EVs), hybrid EVs (HEVs), and turbines for wind power generation. To realize highly efficient electric-power conversion, a stronger permanent magnet than Nd-Fe-B is necessary. One potential candidate is a Fe-rich SmFe-based compound with a ThMn structure. In this paper, the phase stability, structure, and intrinsic and extrinsic magnetic properties in both film and bulk forms are reviewed. Based on these results, a possible way to realize a strong SmFe-based permanent magnet in bulk form is discussed.

摘要

为实现可持续社会，需要低（甚至零）碳排放的“绿色技术”。此类技术中的关键材料是永磁体，因为它在包括电动汽车（EV）、混合动力电动汽车（HEV）以及风力发电涡轮机在内的多种应用中用于电力转换。为实现高效电力转换，需要一种比钕铁硼更强的永磁体。一种潜在的候选材料是具有ThMn结构的富铁SmFe基化合物。本文综述了薄膜和块体形式下该化合物的相稳定性、结构以及本征和非本征磁性能。基于这些结果，讨论了实现块体形式的强SmFe基永磁体的一种可能方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/17d25bfe3963/TSTA_A_1913038_F0013_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/1c80037861d4/TSTA_A_1913038_UF0001_OC.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/8bde2a6a4be1/TSTA_A_1913038_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/db0d3036ac7d/TSTA_A_1913038_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/f27f3070c423/TSTA_A_1913038_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/197f44f3fefa/TSTA_A_1913038_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/5a737441bc7b/TSTA_A_1913038_F0006_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/32f6f223d48e/TSTA_A_1913038_F0007_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/0fb833b8a138/TSTA_A_1913038_F0008_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/f2d7aa5a9c60/TSTA_A_1913038_F0009_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/71bf48e13eef/TSTA_A_1913038_F0010_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/5049f4e771df/TSTA_A_1913038_F0011_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/10db308cd752/TSTA_A_1913038_F0012_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/17d25bfe3963/TSTA_A_1913038_F0013_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/1c80037861d4/TSTA_A_1913038_UF0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/af1afe04c6a6/TSTA_A_1913038_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/8bde2a6a4be1/TSTA_A_1913038_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/db0d3036ac7d/TSTA_A_1913038_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/f27f3070c423/TSTA_A_1913038_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/197f44f3fefa/TSTA_A_1913038_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/5a737441bc7b/TSTA_A_1913038_F0006_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/32f6f223d48e/TSTA_A_1913038_F0007_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/0fb833b8a138/TSTA_A_1913038_F0008_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/f2d7aa5a9c60/TSTA_A_1913038_F0009_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/71bf48e13eef/TSTA_A_1913038_F0010_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/5049f4e771df/TSTA_A_1913038_F0011_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/10db308cd752/TSTA_A_1913038_F0012_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/8221137/17d25bfe3963/TSTA_A_1913038_F0013_B.jpg

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ThMn-type phases for magnets with low rare-earth content: Crystal-field analysis of the full magnetization process.低稀土含量磁体的ThMn型相：全磁化过程的晶体场分析
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RFe11Ti系列（其中R = Y、Pr、Nd、Sm、Gd、Tb、Dy、Ho、Er或Tm）中的磁相变、磁晶各向异性和晶体场相互作用。
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