Hysteretic giant magnetoimpedance effect analyzed by first-order reversal curves
Fanny B\'eron, Lenina A. Valenzuela, Marcelo Knobel, Luiz G.C. Melo, and K leber R. Pirota
TL;DR
This paper investigates the hysteretic giant magnetoimpedance effect in amorphous ribbons using first-order reversal curves, revealing irreversible domain wall transitions and proposing a hysteron model to analyze frequency and magnetostriction influences.
Contribution
It introduces a novel FORC analysis of hysteretic GMI in amorphous ribbons and proposes a hysteron/anti-hysteron model to interpret the observed phenomena.
Findings
FORC curves extend beyond the major hysteresis loop.
Irreversible domain wall transitions influence GMI hysteresis.
The hysteron model explains frequency and magnetostriction effects.
Abstract
Hysteretic giant magnetoimpedance (GMI) of amorphous ribbons with a well-defined transversal domain structure is investigated by means of first-order reversal curves (FORC) analysis. The FORCs are not confined to the hysteretic area, exceeding the major curve amplitude. Irreversible switches of the transverse permeability, caused by domain wall structure transitions, may be the origin of the observed FORC distribution. An interlinked hysteron/anti-hysteron model is proposed to interpret it, which allows analyzing the influence of frequency and magnetostriction upon the hysteretic GMI effect.
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