Electrode position optimization in magnetoelectric sensors based on magnetostrictive-piezoelectric bilayers on cantilever substrates

Author

Bala, Uzzal B. ; Krantz, Matthias C. ; Gerken, M.

Author_Institution

Inst. of Electr. & Inf. Eng., Christian-Albrechts-Univ. zu Kiel, Kiel, Germany

Volume

61

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

392

Lastpage

398

Abstract

Finite element method (FEM) simulations are performed to investigate the sensitivity to dc magnetic fields of magnetoelectric sensors on cantilever substrates with trenches or weights at different positions. For a simple layered cantilever, a 15% higher signal voltage across the piezoelectric layer is obtained for optimally positioned electrodes and an insulating magnetostrictive material. A further 25% increase in the signal voltage is achieved for a trenched cantilever design with a pick-up region.

Keywords

cantilevers; electrodes; finite element analysis; insulating materials; magnetic field measurement; magnetic sensors; magnetoelectric effects; magnetostrictive devices; optimisation; piezoelectric transducers; position measurement; DC magnetic field sensitivity; FEM simulation; electrode position optimization; finite element method simulation; insulating magnetostrictive material; magnetoelectric sensor; magnetostrictive-piezoelectric bilayer; pick-up region; signal voltage; simple layered cantilever substrate; Electric potential; Electrodes; Magnetic resonance; Magnetoelectric effects; Magnetostriction; Materials;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2014.2924

Filename

6746317