Combining ferromagnetic resonator and digital image correlation to study the strain induced resonance tunability in magnetoelectric heterostructures

TL;DR

This paper introduces a combined measurement approach using ferromagnetic resonance and digital image correlation to analyze strain-induced resonance tunability in magnetoelectric heterostructures, enabling precise characterization of magnetostriction and magnetoelectric coefficients.

Contribution

It presents a novel methodology integrating MS-FMR and DIC for simultaneous strain and magnetic resonance measurements in magnetoelectric heterostructures, with analytical modeling for property estimation.

Findings

Effective estimation of magnetostriction coefficients.

Determination of the magnetoelectric coefficient of heterostructures.

Applicable to systems with well-transmitted strains at interfaces.

Abstract

This paper reports the development of a methodology combining microstrip ferromagnetic resonance (MS-FMR) and digital image correlation (DIC) in order to silmuteanously measure the voltage-induced strains and the magnetic resonance in artificial magnetoelectric heterostructures (magnetic films/piezoelectric substrate? or magnetic films/flexible substrate/piezoelectric actuator ?). The overall principle of the technique and the related analytical modelling are described. It is powerful to estimate the magnetostriction coefficient of ferromagnetic thin films and can be used to determine the effective magnetoelectric coefficient of the whole heterostructures in addition to the piezoelectric coefficient related to the in-plane voltage-induced strains. This methodology can be applied to system for which the strains are well transmitted at the different interfaces.