Structure transition induced by electric field in piezoelectric PLZT (7/60/40) ceramics
- 1 July 1998
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 215 (1) , 131-138
- https://doi.org/10.1080/00150199808229557
Abstract
The domain structure and polarization reversal of PLZT (7/60 40) ceramics prepared by sintering in oxygen were studied. It was found that 90° domains can be easily induced and reversed by electric field. Electromechanical coupling kp reached quickly the highest value (kp = 0.67) with the saturation of the 90° domain reversal. Dielectric-temperature spectroscopy showed that the Tc was about 180°C and the phase transition tended to diffused transition. A first-order-like phase transition can be observed below 155°C at the AC depoled state.Keywords
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