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Synthesis and Magnetic Properties of Nanocomposite Magnets Self-Organized from FeB-Nd-Nb Metallic Glasses

Published online by Cambridge University Press:  15 March 2011

R Tamura ,
S Kobayashi ,
T Fukuzaki  and
M Kamiko
R Tamura
Affiliation:
Department of Materials Science & Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan Polyscale Technology Research Center, Tokyo University of Science, Noda, Chiba 278-8510, Japan
S Kobayashi
Affiliation:
Department of Materials Science & Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
T Fukuzaki
Affiliation:
Polyscale Technology Research Center, Tokyo University of Science, Noda, Chiba 278-8510, Japan
M Kamiko
Affiliation:
Institute of Industrial Science, University of Tokyo, Meguro-ku, Tokyo 153-8505, Japan
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Abstrct

Change of the magnetic property of Fe-B-Nd-Nb alloys was investigated with replacing Nb by a glass forming element Zr under constant quenching rate as well as heat treatment conditions. As a result, the coercivity significantly increases up to 1207 kA/m when the half of Nd is replaced by Zr, which is presumably due to grain refinement of the Nd2Fe14B phase. The self-organized nanograin magnets are attractive for future applications since their coercivity can be further improved by reducing the grain size via optimizing the Zr concentration, the quenching rate and the subsequent heat treatment condition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1118: Symposium K – Magnetic Nanostructures by Design , 2008 , 1118-K07-13
Copyright
Copyright © Materials Research Society 2009

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References

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