Portal de Periódicos da CAPES

Soft Magnetic Melt-Spun Ribbons for Energy and Sensor Applications

2013; Technical University of Košice; Volume: 13; Issue: 1 Linguagem: Inglês

10.2478/aeei-2013-0009

1338-3957

I. Škorvánek, J. Marcin, Marek Capik, Marek Varga, J. Kováč, Irena Janotová, P. Švec, B. Idzikowski,

Electromagnetic wave absorption materials

The continuing interest in development of new soft magnetic alloys is driven by industrial need to enhance the performance of electrical power generation/distribution devices and various energy conversion and sensor systems.In this work we report on development of Fe-Co-B-(P)-Cu melt-spun alloys with high magnetic flux density, where the beneficial effects of a heat treatment under magnetic field are discussed in terms of the improved magnetic softness and the possibility to tune the application-oriented properties.Soft magnetic FeNi-and FeCo-based amorphous and nanocrystalline alloys attract a considerable attention for various magnetic sensors.Examples of our recent work on the utilization of both longitudinal and transverse magnetic field annealing for tuning of giant magnetoimpedance (GMI) response in these alloys are briefly presented.The last part of this paper is devoted to search for magnetic materials with suitable magnetocaloric properties for magnetic refrigeration technology.We report on the beneficial effect of a partial cobalt substitution for iron on the magnetic entropy characteristics and the enhancement of refrigerant capacity in GdFe(Co)Al-based alloys.