Abstract
The effect of lamination process on the performance of Metglas/Pb(Zr,Ti)O3‐based composite magnetoelectric (ME) sensors has been studied. Improved sensor processing can lead to higher coupling between the magnetostrictive and piezoelectric phases. A higher coupling factor results in higher magnetic field sensitivity and lower equivalent magnetic noise floors. Spin‐coat/vacuum‐bag application and cure of interfacial epoxy, in addition to the use of Metglas foils with enhanced magnetostriction (λ = 42 ppm), has led to an increase in the ME coefficient from 6 to 21.6 V/cm·Oe, and a decrease in the 1 Hz equivalent magnetic noise from 2 × 10−10 to 4 × 10−11 T/√Hz.
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