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Title: Magnetoelectric laminated composites of lead-free BSZT and magnetostrictive materials
Authors: Choy, SH
Chan, NY
Lo, CY
Chan, HLW 
Keywords: Fiber composites
Lead-free ceramics
Issue Date: 2013
Publisher: Springer
Source: Journal of electroceramics, 2013, v. 31, no. 1-2, p. 102-108 How to cite?
Journal: Journal of electroceramics 
Abstract: A magnetostrictive-piezoelectric laminated composite has been developed by sandwiching a lead-free Sr modified BZT piezoelectric ceramic plate between two magnetostrictive materials plates polarized in the thickness direction. Two different magnetostrictive materials, Terfenol-D continuous fiber composite (TD-FC) and cobalt ferrite (CFO), were used to fabricate the ME composite laminates. The quasistatic magnetostrictive properties of the magnetostrictive samples were measured and the quasistatic (differential) strain coefficient d-{33}^{QS }) can be found. Lead-free magnetoelectric (ME) laminated composite has a good ME voltage sensitivity (ME v ) under a low magnetic bias field (H Bias ). The BSZT/TDFC laminate has ME v = 0.888 V/Oe at the resonance frequency of 119 kHz under a H Bias of 0.6 kOe. The BSZT/CFO laminate has ME v = 0.155 V/Oe at the resonance frequency of 204 kHz under a H Bias of 0.4 kOe. A prototype magnetic field sensor was fabricated and characterized under different frequency and different field strength. This work shows the potential of BSZT lead-free ceramics in magnetic field sensing application.
ISSN: 1385-3449
EISSN: 1573-8663
DOI: 10.1007/s10832-013-9823-y
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