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

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

4009

Lastpage

4011

Abstract

The evolution of the giant magneto-impedance effect (GMI) in the Fe_73.5Si_13.5B₉Cu₁Nb₃ 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; Fe_73.5Si_13.5B₉Cu₁Nb ₃; Fe_73.5Si_13.5B₉Cu₁Nb 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489845

Filename

489845