Magnetic properties and electron microscopy analysis of Nb-containing (NdDy)FeB sintered magnets

A systematic microstructure analysis of Nb doped magnets has been made. Many plate-like or rectangular Fe 2Nb Laves phase and fine Nb-containing precipitates have been observed in the grains of the hard magnetic phase. Experiments showed that the initial magnetization curves of dc demagnetized sampl...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1992, Vol.103 (1), p.65-72
Main Authors: Jinfang, Liu, Helie, Luo, Jiang, Wan
Format: Article
Language:English
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Summary:A systematic microstructure analysis of Nb doped magnets has been made. Many plate-like or rectangular Fe 2Nb Laves phase and fine Nb-containing precipitates have been observed in the grains of the hard magnetic phase. Experiments showed that the initial magnetization curves of dc demagnetized samples are well below that of the thermally demagnetized samples, which has been explained in terms of an unpinning mechanism.
ISSN:0304-8853
DOI:10.1016/0304-8853(92)90237-I