Asymmetrical magnetoimpedance (AMI) is very important to further improve micromagnetic sensor performance
in terms of linearity and sensitivity. This behavior was investigated for Co68.15Fe4.35Si12.5B15
amorphous ribbons irradiated by a 1064 nm Nd:YAG pulsed laser in air and in the presence of 3 Oe longitudinal
magnetic field with changing pulse repetition rate. Results indicate that for different pulse repetition
rates, various types of AMI profiles appear. For the samples annealed in the presence of
longitudinal field, because of induced anisotropy, rising in asymmetry factor takes place and another
peak in the magnetoimpedance (MI) profile transpires.
کلید واژگان :
Amorphous metals Metallic glasses Alloys Laser–matter interactions Magnetic properties Atomic force and scanning tunneling microscopy Nanocrystals
