In situ investigation of the magnetization processes in amorphous glass-covered wires by ferromagnetic resonance measurements

Abstract
The magnetization processes in amorphous glass-covered wires with positive (Fe based), negative (Co based), and nearly zero magnetostriction (Co based with a small amount of Fe addition) are analyzed by ferromagnetic resonance (FMR) measurements. A second peak in the low field range of the derivative resonance spectra has been observed for all samples. A clear relationship between the shape of this peak and the type of magnetization process that occurs in these wires was found. The obtained results show that FMR measurements offer new possibilities of investigating the magnetization processes in amorphous glass-covered wires.