Magnetoelectric properties of a heterostructure of magnetostrictive and piezoelectric composites

Author

Wan, J.G. ; Or, S.W. ; Liu, J.-M. ; Chan, H.L.W. ; Wang, G.H. ; Nan, C.W.

Author_Institution

Dept. of Appl. Phys., Hong Kong Polytech. Univ., China

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

3042

Lastpage

3044

Abstract

This paper presents a magnetoelectric (ME) heterostructure of a magnetostrictive Terfenol-D/epoxy 0-3 composite (MSCP) plate combined with a piezoelectric PZT/epoxy 0-3 composite (PECP) plate along the longitudinal direction. By keeping the dimensions of the MSCP at 6.8 mm × 6.2 mm × 0.7 mm, heterostructures with various PECP lengths of 8-15 mm are prepared and characterized to reveal their frequency dependence of the ME effect. The results exhibit several resonance peaks in the heterostructures due to the magnetomechanical resonances (MMR) of the MSCP and the electromechanical resonances (EMR) of the PECP. The superposition of the MMR and EMR enhances significantly the ME output of the heterostructures. The highest ME voltage coefficient (α_E) of 13.1 V/cm·Oe is observed at the resonance frequency of 106.8 kHz when the length ratio of the MSCP and PECP is set to 6.8/10.2, together with an optimal magnetic bias field of 0.7 kOe.

Keywords

composite materials; electromechanical effects; magnetoelectric effects; magnetomechanical effects; magnetostrictive devices; piezoelectric materials; 106.8 kHz; 8 to 15 mm; ME voltage coefficient; MSCP plate; PECP plate; TbDyFe; electromechanical resonance; magnetoelectric composites; magnetoelectric effect; magnetoelectric heterostructure; magnetoelectric properties; magnetomechanical resonance; magnetostrictive Terfenol-D-epoxy 0-3 composite; magnetostrictive composites; optimal magnetic bias field; piezoelectric PZT-epoxy 0-3 composite; piezoelectric composites; resonance frequency; Antiferromagnetic materials; Laboratories; Magnetic materials; Magnetic properties; Magnetic resonance; Magnetostriction; Microstructure; Physics; Piezoelectric polarization; Solid state circuits; Heterostructures; ME; composites; magnetoelectric; magnetostrictive composites; piezoelectric composites;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.830197

Filename

1325726