The relationship between the crystallization process and the soft magnetic properties of nanocrystalline Fe{endash}M{endash}B{endash}Cu (M=Zr, Nb) alloy

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365508· OSTI ID:496506

Bitoh, T; Makino, A; Hatanai, T ^[1]; Inoue, A ^[2]; Masumoto, T ^[3]

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1. Central Research Laboratory, Alps Electric Co., Ltd., Nagaoka 940 (Japan)
2. Institute for Materials Research, Tohoku University, Sendai 980-77 (Japan)
3. The Research Institute of Electrical and Magnetic Materials, Sendai 982 (Japan)

The relationship between the crystallization process and the soft magnetic properties of nanocrystalline Fe{sub 84}Nb{sub 3.5}Zr{sub 3.5}B{sub 8}Cu{sub 1} alloy has been studied by comparison with that of Fe{sub 73.5}Si{sub 13.5}B{sub 9}Nb{sub 3}Cu{sub 1} alloy. When the annealing temperature T{sub a} is slightly above the crystallization temperature, high permeability can only be obtained for Fe{endash}Nb{endash}Zr{endash}B{endash}Cu after annealing for very short times. The T{sub a} dependence of the coercive force of Fe{endash}Nb{endash}Zr{endash}B{endash}Cu cannot be explained by the change of the grain size of the bcc phase. The soft magnetic properties of Fe{endash}Nb{endash}Zr{endash}B{endash}Cu is dominated by not only the grain size but also the Curie temperature of the intergranular amorphous phase. It is concluded that the magnetic softness of Fe{endash}Nb{endash}Zr{endash}B{endash}Cu is related directly to the degree of the reduction in the apparent anisotropy, while that of Fe{endash}Si{endash}B{endash}Nb{endash}Cu is strongly affected by the Si content of the bcc phase. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 496506
• Report Number(s): CONF-961141-; ISSN 0021-8979; TRN: 97:016202
• Journal Information: Journal of Applied Physics, Vol. 81, Issue 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
MAGNETIC PROPERTIES
ZIRCONIUM ALLOYS
NIOBIUM ALLOYS
BORON ALLOYS
COPPER ALLOYS
ANNEALING
METALLIC GLASSES
FERROMAGNETIC MATERIALS
MAGNETIC SUSCEPTIBILITY
CURIE POINT
CRYSTALLIZATION
PERMEABILITY
COERCIVE FORCE
GRAIN SIZE
TEMPERATURE DEPENDENCE