MAGNETIC BEHAVIOR AND MAGNETO-IMPEDANCE EFFECT IN CoFeBSi RIBBONS
Abilo A. Velasquez,
Monica Gomez Hermida,
Andres Rosales Rivera
Affiliations
Abilo A. Velasquez
Laboratorio de Magnetismo y Materiales Avanzados, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Colombia, Sede Manizales, Manizales, Colombia. Departamento de Ingeniera Electrica, Electronica y Computacion, Facultad de Ingeniera
Monica Gomez Hermida
Departamento de Ciencias Basicas, Universidad Catolica de Pereira, Pereira, Colombia y Facultad de Minas, Universidad Nacional de Colombia, Sede Medelln, Medelln, Colombia.
Andres Rosales Rivera
Laboratorio de Magnetismo y Materiales Avanzados, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Colombia, Sede Manizales, Manizales, Colombia
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.
