DocumentCode :
974896
Title :
Magnetic annealing of zero magnetostrictive amorphous alloy with high saturation induction
Author :
Kohmoto, O. ; Fujishima, Hiroki ; Ojima, Teruhiko
Author_Institution :
TDK Electronics Company, Ltd., Ichikawa, Japan.
Volume :
16
Issue :
2
fYear :
1980
fDate :
3/1/1980 12:00:00 AM
Firstpage :
440
Lastpage :
443
Abstract :
Two different kinds of magnetic annealing were made for zero magnetostrictive amorphous Fe-Co-Si-B alloy with high saturation induction (10.1 kG). In a case of conventional magnetic annealing dc coercive force decreases to 12 mOe and maximum permeability increases as much as 8 × 105. But initial permeability at 1 kHz decreases to 500. Because of induced magnetic uniaxial anisotropy, magnetization can reverse easily by 180° wall motion in dc field, but in ac field magnetization reversal through 180° wall motion increases eddy-current loss and initial permeability decreases. In order to improve permeability in the ac field without inducing anisotropy, another kind of magnetic annealing was performed. The samples were rotated in a dc field and were annealed. We first got high initial ac permeability alloy with high saturation induction for the T_{c} > T_{cry} type. Initial ac μ at 1 kHz, coercive force, and remanence are 12000, 13 mOe, and 5.8 kG, respectively.
Keywords :
Amorphous magnetic materials/devices; Magnetic thermal factors; Magnetostriction; Nonlinear magnetics; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Annealing; Coercive force; Magnetic anisotropy; Magnetostriction; Permeability; Perpendicular magnetic anisotropy; Saturation magnetization;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1980.1060608
Filename :
1060608
Link To Document :
بازگشت