Magnetic properties of metastable phase from undercooled Nd–Fe–B melts

Nd 14 Fe 79 B 7 alloys were solidified from the undercooled melts by containerless processing. The resultant alloys contained a large amount of a metastable phase with a chemical composition near that of the bulk alloy and a crystal structure similar to that of the Nd2Fe17 phase. The metastable phas...

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Bibliographic Details
Published in:Journal of applied physics 2004-06, Vol.95 (12), p.8478-8480
Main Authors: Ozawa, Shumpei, Li, Mingjun, Kuribayashi, Kazuhiko, Sugiyama, Suguru, Jimbo, Itaru, Hirosawa, Satoshi
Format: Article
Language:English
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Summary:Nd 14 Fe 79 B 7 alloys were solidified from the undercooled melts by containerless processing. The resultant alloys contained a large amount of a metastable phase with a chemical composition near that of the bulk alloy and a crystal structure similar to that of the Nd2Fe17 phase. The metastable phase had low magnetic properties, a saturation magnetization of 86.7 emu/g, a remanence of 4.5 emu/g and a coercivity of 0.14 kOe. The magnetic properties of the sample annealed at 1020 K were markedly improved due to the increase in the amount of the Nd2Fe14B phase.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1753071