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Magnetostriction and Coercivity of Soft Magnetic Fe-(Al, Ga)-(P, C, B, Si) Bulk Glassy Alloys

Published online by Cambridge University Press:  11 February 2011

Akihiro Makino ,
Teruo Bitoh  and
Akihisa Inoue
Akihiro Makino
Affiliation:
Department of Machine Intelligence and Systems Science, Faculty Systems Science and Technology, Akita Prefectural University, Honjo 015–0055, Japan.
Teruo Bitoh
Affiliation:
Department of Machine Intelligence and Systems Science, Faculty Systems Science and Technology, Akita Prefectural University, Honjo 015–0055, Japan.
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan.
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Abstract

The relationship between coercivity (Hc) and magnetostriction (λs) of the glassy Fe-(Al, Ga)-(P, C, B, Si) alloys has been discussed. The glassy Fe-(Al, Ga)-(P, C, B, Si) alloys exhibit lower Hc and lower Is compared with the conventional Fe-based amorphous alloys with the same λs and Fe content, respectively. Theoretical analysis on the basis of domain-wall movement suggests that the low Hc results from the long-range homogeneous structure of the glassy alloys, which realizes a low density of pinning centers. The good combination of high glass-forming ability and good soft magnetic properties (especially low Hc) indicates the possibility of future development as new bulk glassy soft magnetic materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC1.4
Copyright
Copyright © Materials Research Society 2003

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References

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