The Role of Temperature on the Magnetization Process in CoFeZrB/FeCuNbMoSiB Hybrid Ferromagnets

The study presents magnetization process behaviour versus operating temperature up to 100 • C in dual-phase ferromagnets in the light of their complex permeability spectra and energy losses from quasi-dc regime up to about 1 MHz upon defined peak induction.The samples consist of two Co-and Fe-based ball-milled-ribbon powders mixed in the same mass ratio.The magnetic characterization has been carried out by a digital hysteresisgraph-wattmeter using complex permeability approach to the linear material.Temperature invoked reduction of anisotropy leads to the decrease of hysteresis losses and significantly affects the low-frequency part of permeability and losses that is ascribed to domain wall movement.The high-frequency behaviour remains unchanged with respect to increase of temperature.