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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >A magnetic and compositional study of the disproportionated stage of the solid-HDDR process in NdFeB-type materials
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A magnetic and compositional study of the disproportionated stage of the solid-HDDR process in NdFeB-type materials

机译：对NdFeB型材料中固态HDDR过程歧化阶段的磁性和成分研究

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摘要

A thinned sample of Nd12.8Fe69.2Co11Ga1B6 after the disproportionation stage of the solid-HDDR process has been examined using advanced transmission electron microscopy techniques. High resolution X-ray mapping is particularly useful for showing the distribution of all elements with the exception of B. Elemental maps show clearly that during the disproportionation reaction, Co and Ga partitioned into the alpha-Fe and not into the NdH2. Domain observations using Lorentz microscopy revealed irregular domain walls whose location was influenced by the non-magnetic NdH2 inclusions. The walls moved easily under small applied magnetic fields in a series of discrete jumps. The behaviour was consistent with that of a soft magnetic material with low anisotropy, and differed markedly from that of the recombined material. (C) 1998 Elsevier Science S.A. All rights reserved. [References: 17]
机译：已使用先进的透射电子显微镜技术检查了固体HDDR工艺歧化阶段后Nd12.8Fe69.2Co11Ga1B6的稀化样品。高分辨率X射线映射对于显示除B以外的所有元素的分布特别有用。元素图清楚地表明，在歧化反应期间，Co和Ga分配为α-Fe而不是NdH2。使用Lorentz显微镜进行的畴观察显示出不规则畴壁，其位置受到非磁性NdH2夹杂物的影响。在一系列离散跳变的作用下，墙壁在小磁场作用下很容易移动。该行为与具有低各向异性的软磁材料的行为一致，并且与复合材料的行为明显不同。 （C）1998 Elsevier Science S.A.保留所有权利。 [参考：17]

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