GIANT MAGNETOIMPEDANCE EFFECT IN AS-DEPOSITED (Fe₈₈Zr₇B₅)_0.97Cu_0.03 AMORPHOUS FILMS

Abstract

The giant magnetoimpedance (GMI) effect has been observed in as-deposited ( Fe 88 Zr 7 B 5 ) 0.97 Cu 0.03 amorphous film prepared by radio frequency sputtering. The maximum magnetoimpedance ratio of 17% was obtained at a frequency of 13 MHz. The field and frequency dependences of magnetoimpedance, magnetoresistance, magnetoreactance and transverse permeability have been investigated in detail. Our results show that a close correlation between longitudinal GMI and transverse permeability exists. Our results indicate that the amorphous ( Fe 88 Zr 7 B 5 ) 0.97 Cu 0.03 films have good soft magnetic properties and remarkable GMI effect even though in the as-deposited state.