Title :
Influence of nanocrystallization on the magneto-impedance effect in FeCuNbSiB amorphous wires
Author :
Knobel, M. ; Sánchez, M.L. ; Marín, P. ; Gómez-Polo, C. ; Vázquez, M. ; Hernando, A.
Author_Institution :
Inst. de Magnetismo Aplicado & Inst. de Ciencia de Mater., Madrid, Spain
fDate :
11/1/1995 12:00:00 AM
Abstract :
The evolution of the giant magneto-impedance effect (GMI) in the Fe73.5Si13.5B9Cu1Nb3 amorphous alloy wire as a function of the structural and magnetic changes induced by suitable thermal treatments are reported here. The results show that the maximum GMI relative changes and magnetic field sensitivity are observed after annealing in the range of temperatures T a=550-600°C, where nanocrystallization occurs. This maximum effect is related to the optimum compromise between soft magnetic behaviour and electrical properties, i.e. maximum circular susceptibility and minimum resistivity
Keywords :
amorphous magnetic materials; annealing; boron alloys; copper alloys; crystallisation; ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic susceptibility; nanostructured materials; niobium alloys; silicon alloys; 550 to 600 C; Fe73.5Si13.5B9Cu1Nb 3; Fe73.5Si13.5B9Cu1Nb 3 amorphous alloy wire; FeCuNbSiB amorphous wires; annealing; electrical properties; magnetic changes; magnetic field sensitivity; magneto-impedance effect; maximum circular susceptibility; minimum resistivity; nanocrystallization; soft magnetic behaviour; structural changes; thermal treatments; Amorphous magnetic materials; Amorphous materials; Annealing; Copper alloys; Iron alloys; Magnetic fields; Niobium alloys; Silicon alloys; Soft magnetic materials; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
