Title :
Power absorption and ferromagnetic resonance in Co-rich metallic glasses
Author :
García-Miquel, H. ; Esbrí, M.J. ; Andrés, J.M. ; García, J.M. ; García-Beneytez, J.M. ; Vázquez, M.
Author_Institution :
ETSIT, Univ. Politecnica de Valencia, Spain
fDate :
1/1/2001 12:00:00 AM
Abstract :
The power absorption of Co-rich metallic glasses in the shape of ribbons and microwires has been measured in the microwave frequency range. The technique employed consists of replacing the dielectric of a coaxial transmission line by the amorphous sample to be measured. The ferromagnetic resonance frequency of the microwires has been obtained by analyzing the absorbed power as a function of an external magnetic field. From the evolution of this resonance frequency, the anisotropy field has been deduced and successfully compared to that obtained from low-frequency hysteresis loops
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic resonance; magnetic anisotropy; manganese alloys; metallic glasses; microwave materials; microwave measurement; silicon alloys; Co68B15Si10Mn7; Co77.5Si13.5B9; amorphous microwires; amorphous ribbons; anisotropy field; coaxial transmission line; external magnetic field; ferromagnetic resonance; metallic glasses; microwave frequency range; power absorption; Dielectric measurements; Electromagnetic wave absorption; Glass; Magnetic field measurement; Magnetic resonance; Microwave measurements; Power measurement; Resonant frequency; Shape measurement; Transmission line measurements;
Journal_Title :
Magnetics, IEEE Transactions on
