MAGNETIC BEHAVIOR AND MAGNETO-IMPEDANCE EFFECT IN CoFeBSi RIBBONS

Abstract

In this paper we present dc magnetization, ac susceptibility and impedance measurements on amorphous alloy ribbons Co80-xFexB10Si10 with x = 0, 6, 8 and 10 at.%. They indicate that at room temperature these samples have good soft magnetic behavior including the giant magneto-impedance effect. The real part of the ac susceptibility χ’ac reveals an irreversibility field, Hirr, which corresponds to the transverse anisotropy field, Hk, at which the magneto-impedance ratio reaches its maximum value.

Keywords

• Aleaciones magneticas blandas
• comportamiento magnetico
• efecto de magneto-impedancia gigante.