Giant magnetoresistive effect element and current sensor using the same

摘要

An object of the present invention is to provide a GMR element having a large resistance change rate (ΔR / Rmin) and a wide output linear range, and a current sensor using the same. A fixed magnetic layer 6 in which magnetization is fixed, a free magnetic layer 8 whose magnetization is changed by an external magnetic field, and a spacer layer 7 located between the fixed magnetic layer 6 and the free magnetic layer 8 are provided. A GMR element 1, wherein a free magnetic layer 8 is formed by laminating a CoFe alloy 8 a and a CoFeB alloy 8 b, and a current sensor using the GMR element 1. [Selection] Figure 1