Giant magnetoimpedance in crystalline Mumetal

TL;DR

This paper investigates the giant magnetoimpedance effect in crystalline Mumetal, demonstrating how heat treatment and sample thickness influence GMI ratios and sensitivity, achieving performance comparable to other advanced magnetic materials.

Contribution

It presents the first detailed analysis of GMI in crystalline Mumetal, highlighting the effects of annealing and thickness on GMI performance.

Findings

GMI ratios up to 310% achieved

Field sensitivity of about 20%/Oe demonstrated

Annealing significantly enhances GMI effects

Abstract

We studied giant magnetoimpedance (GMI) effect in commercial crystalline Mumetal, with the emphasis to sample thickness dependence and annealing effects. By using appropriate heat treatment one can achieve GMI ratios as high as 310%, and field sensitivity of about 20%/Oe, which is comparable to the best GMI characteristics obtained for amorphous and nanocrystalline soft magnetic materials.