Giant Magnetoimpedance Effect in NiFeMo Permalloy Ribbon

Abstract

In the present paper, the dc longitudinal field and ac frequency dependence of the magnetoimpedance, magnetoresistance, magnetoreactance and magnetoimpedance-phase of NiFeMo permalloy ribbon are investigated. The value of the magnetoimpedance ratio (Z(0) - Z(5172A.m -1 ))/Z(0) of NiFeMo permalloy ribbon can reach 39.54% at 0.3MHz. We also found that the change ratios of the magnetoimpedance (Z(0) - Z(5172A.m -1 ))/Z(0), the magnetoresistance ratio (R(0) - R(5172 A.m -1 )))/R(0) and the magnetoreactance ratio (X(0) - X(5172A.m -1 ))/X(0) intersect at 0.27 MHz where the change ratio of the magnetoimpedance phase (θ(0)-θ(5172A.m -1 ))/θ(0) is zero.