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Title: Change of permeability and GMI in amorphous Co{sub 71}Fe{sub 1}Mo{sub 1}Mn{sub 4}Si{sub 14}B{sub 9} alloy before and after heat treatments

Abstract

The complex permeability spectra of amorphous ribbons were measured as a function of ac magnetic field. At relatively high magnetic field, the spectra showed the superposition of two Debye type dispersions attributed to the relaxation processes of domain wall motion and rotational magnetization. The permeability from the wall motion was maximum in the sample annealed at 250 C, while the permeability from rotational magnetization was maximum at the sample annealed at 350 C. The magneto-impedance (MI) profile changed sensitively with measuring frequency and annealing temperature. The changes of magneto-impedance with annealing temperature were discussed in terms of magnetic softness and domain change due to the annealing.

Authors:
; ; ;
Publication Date:
Research Org.:
Chungbuk National Univ., Cheongju (KR)
OSTI Identifier:
20000780
Alternate Identifier(s):
OSTI ID: 20000780
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; METALLIC GLASSES; COBALT BASE ALLOYS; IRON ALLOYS; MOLYBDENUM ALLOYS; MANGANESE ALLOYS; SILICON ALLOYS; BORON ALLOYS; HEAT TREATMENTS; MAGNETIC SUSCEPTIBILITY; DOMAIN STRUCTURE; IMPEDANCE

Citation Formats

Ryu, G.H., Yu, S.C., Kim, C.G., and Lachowicz, H.K. Change of permeability and GMI in amorphous Co{sub 71}Fe{sub 1}Mo{sub 1}Mn{sub 4}Si{sub 14}B{sub 9} alloy before and after heat treatments. United States: N. p., 1999. Web. doi:10.1109/20.800534.
Ryu, G.H., Yu, S.C., Kim, C.G., & Lachowicz, H.K. Change of permeability and GMI in amorphous Co{sub 71}Fe{sub 1}Mo{sub 1}Mn{sub 4}Si{sub 14}B{sub 9} alloy before and after heat treatments. United States. doi:10.1109/20.800534.
Ryu, G.H., Yu, S.C., Kim, C.G., and Lachowicz, H.K. Wed . "Change of permeability and GMI in amorphous Co{sub 71}Fe{sub 1}Mo{sub 1}Mn{sub 4}Si{sub 14}B{sub 9} alloy before and after heat treatments". United States. doi:10.1109/20.800534.
@article{osti_20000780,
title = {Change of permeability and GMI in amorphous Co{sub 71}Fe{sub 1}Mo{sub 1}Mn{sub 4}Si{sub 14}B{sub 9} alloy before and after heat treatments},
author = {Ryu, G.H. and Yu, S.C. and Kim, C.G. and Lachowicz, H.K.},
abstractNote = {The complex permeability spectra of amorphous ribbons were measured as a function of ac magnetic field. At relatively high magnetic field, the spectra showed the superposition of two Debye type dispersions attributed to the relaxation processes of domain wall motion and rotational magnetization. The permeability from the wall motion was maximum in the sample annealed at 250 C, while the permeability from rotational magnetization was maximum at the sample annealed at 350 C. The magneto-impedance (MI) profile changed sensitively with measuring frequency and annealing temperature. The changes of magneto-impedance with annealing temperature were discussed in terms of magnetic softness and domain change due to the annealing.},
doi = {10.1109/20.800534},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}