Title :
Mechanism of relaxation dispersions of permeability spectra in Co-based amorphous wire
Author :
Song, Seon-Ho ; Yu, Seong-Cho ; Kim, Cheol Gi ; Vázquez, M.
Author_Institution :
Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
The permeability spectra has been measured in as-quenched (Co0.94Fe0.06)72.5Si12.5B 15 amorphous wire as a function of dc-biased current, Ib . Two relaxations of permeability spectra are revealed in 4 and 52 kHz regions, indicating that different magnetization mechanisms are involved in each frequency region. As the dc-biased current Ib increases, the value of spectra curve at 52 kHz monotonously decreases due to the decrease of core domains by Ib . However the value of the spectra curve at 4 kHz increases with I b up to 4.25 mA and then decreases with further increasing I b
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; iron alloys; magnetic domains; magnetic permeability; magnetic relaxation; magnetisation; silicon alloys; (Co0.94Fe0.06)72.5Si12.5B15; 4 kHz; 52 kHz; DC-biased current; amorphous wire; core domains; magnetization; permeability spectra; relaxation dispersions; Amorphous materials; Current measurement; Frequency measurement; Impedance measurement; Iron; Magnetic cores; Magnetization; Permeability measurement; Solenoids; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
