Suppression of the magnetoelectric hysteresis in a composite langatate-metglas structure

D.A Burdin,N.A Ekonomov,Y.K Fetisov,L.Y Fetisov,D.V Chashin,N Perov,A Semisalova

doi:10.1051/epjconf/201818507006

D.A Burdin, N.A Ekonomov + Show 5 more

Open Access

https://doi.org/10.1051/epjconf/201818507006

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Abstract

The suppression of the magnetoelectric effect hysteresis in a composite planar structure containing mechanically coupled layers of piezoelectric langatate and magnetostrictive amorphous alloy Metglas was observed and investigated. As the pumping magnetic field with frequency ~84 kHz was increased from 0.6 Oe up to 20 Oe, the coercive fields for the 1st and 3rd voltage harmonics generated by the structure were decreased from ~0.7 Oe up to zero. The suppression of the magnetoelectric hysteresis will allow increasing of absolute accuracy of the magnetoelectric magnetic field sensors by ~2 orders of magnitude.

Highlights

Magnetoelectric (ME) effect is observed in composite planar structures consisting of ferromagnetic (FM) and piezoelectric (PE) layers
The effect exhbits itself as generation of electrical voltage by the structure under simultaneous action of a permanent H and an alternating h magnetic fields [1,2]
The magnetic field produces magnetostrictive deformation of the FM layer, this deformation is transmitted to the PE layer, and it generates electrical voltage due to piezoelectricity

Summary

Introduction

Magnetoelectric (ME) effect is observed in composite planar structures consisting of ferromagnetic (FM) and piezoelectric (PE) layers. The effect of hysteresis suppression was studied for the 1st and 3rd voltage harmonics, which can be used to design high-sensitivity magnetic field sensors [6,7].

Results

Conclusion