Abstract
In order to study the magnetic properties and giant magnetoimpedance (GMI) effect of FINEMET/IGZO composite ribbons. A series of ZnGaInO4 film (IGZO) with different thickness (t) were deposited by RF magnetron sputtering from targets of nominally identical compositions onto Fe-based nanocrystalline ribbon. The results of hysteresis loops show that the FINEMET/IGZO composite ribbons has good soft magnetic properties, and the GMI ratio of the composite ribbons are enhanced. The GMI ratio of FINEMET/IGZO composite ribbons increases at first and then decreases with the increase of IGZO layer thickness (0 ∼ 200 nm). This result was attributed to the relative contribution of electromagnetic interaction and stress interaction between IGZO coating layer and FINEMET ribbon. These results provide a method for improving the GMI effect in composite ribbons, optimizing the GMI effect of semiconductor materials and exploring new GMI magnetic sensors compatible with semiconductor electronics.
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