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.
| Original language | English |
|---|---|
| Pages (from-to) | 102-108 |
| Number of pages | 7 |
| Journal | Journal of Electroceramics |
| Volume | 31 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Oct 2013 |
Keywords
- Fiber composites
- Lead-free ceramics
- Magnetoelectric
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Mechanics of Materials
- Materials Chemistry
- Electrical and Electronic Engineering