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Title: High-frequency permeability characteristics of Fe- and Co-based amorphous alloys with high B concentrations

Abstract

New Fe-based and Co-based amorphous alloys with a high B concentration of 30at% were formed in (Fe, Co, Ni){sub 62}Nb{sub 8}B{sub 30} system. The amorphous alloys exhibit a wide supercooled liquid region ({Delta}T{sub x}) above 80K before crystallization in the range of 5 to 40% Co and 0 to 10%Ni and the largest {Delta}T{sub x} is 87K for Fe{sub 52}Co{sub 10}Nb{sub 8}B{sub 30}. The Fe{sub 62{minus}x}Co{sub x}Nb{sub 8}B{sub 30} alloys exhibit good soft magnetic properties, i.e., low coercive force (H{sub c}) of 2--3 A/m, high effective permeability ({mu}{sub e}) of 20,000--30,000 at 1 kHz and low saturated magnetostriction ({lambda}{sub s}) of 2--8 x 10{sup {minus}6}. The high {mu}{sub c} characteristics are maintained in a higher frequency range and the highest {mu}{sub c} at 1 kHz is 7500 for Co{sub 40}Fe{sub 22}Nb{sub 8}B{sub 30} amorphous alloys exhibiting large {Delta}T{sub x}, good high-frequency permeability and high resistivity is encouraging the future development as a new soft magnetic materials.

Authors:
; ; ;
Publication Date:
Research Org.:
Tohoku Univ., Sendai (JP)
OSTI Identifier:
20000771
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; IRON BASE ALLOYS; COBALT BASE ALLOYS; NIOBIUM ALLOYS; BORON ALLOYS; AMORPHOUS STATE; NICKEL ALLOYS; MAGNETIC PROPERTIES; ELECTRICAL PROPERTIES

Citation Formats

Inoue, A., Itoi, T., Koshiba, H., and Makino, A. High-frequency permeability characteristics of Fe- and Co-based amorphous alloys with high B concentrations. United States: N. p., 1999. Web. doi:10.1109/20.800522.
Inoue, A., Itoi, T., Koshiba, H., & Makino, A. High-frequency permeability characteristics of Fe- and Co-based amorphous alloys with high B concentrations. United States. doi:10.1109/20.800522.
Inoue, A., Itoi, T., Koshiba, H., and Makino, A. Wed . "High-frequency permeability characteristics of Fe- and Co-based amorphous alloys with high B concentrations". United States. doi:10.1109/20.800522.
@article{osti_20000771,
title = {High-frequency permeability characteristics of Fe- and Co-based amorphous alloys with high B concentrations},
author = {Inoue, A. and Itoi, T. and Koshiba, H. and Makino, A.},
abstractNote = {New Fe-based and Co-based amorphous alloys with a high B concentration of 30at% were formed in (Fe, Co, Ni){sub 62}Nb{sub 8}B{sub 30} system. The amorphous alloys exhibit a wide supercooled liquid region ({Delta}T{sub x}) above 80K before crystallization in the range of 5 to 40% Co and 0 to 10%Ni and the largest {Delta}T{sub x} is 87K for Fe{sub 52}Co{sub 10}Nb{sub 8}B{sub 30}. The Fe{sub 62{minus}x}Co{sub x}Nb{sub 8}B{sub 30} alloys exhibit good soft magnetic properties, i.e., low coercive force (H{sub c}) of 2--3 A/m, high effective permeability ({mu}{sub e}) of 20,000--30,000 at 1 kHz and low saturated magnetostriction ({lambda}{sub s}) of 2--8 x 10{sup {minus}6}. The high {mu}{sub c} characteristics are maintained in a higher frequency range and the highest {mu}{sub c} at 1 kHz is 7500 for Co{sub 40}Fe{sub 22}Nb{sub 8}B{sub 30} amorphous alloys exhibiting large {Delta}T{sub x}, good high-frequency permeability and high resistivity is encouraging the future development as a new soft magnetic materials.},
doi = {10.1109/20.800522},
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}
}