1. Piezoelectric properties of Pb(Zn1/3Nb2/3)O3-contained PZT thin plate
- Author
-
Shu-Fen Liao, Chien-Min Wang, Wen-Chin Yeh, Ming-Chu Chang, and Syh-Yuh Cheng
- Subjects
Materials science ,Vapor pressure ,Evaporation ,Sintering ,Dielectric ,Condensed Matter Physics ,Piezoelectricity ,Electronic, Optical and Magnetic Materials ,Phase (matter) ,visual_art ,visual_art.visual_art_medium ,Ceramic ,Composite material ,Perovskite (structure) - Abstract
Pb(Zn1/3Nb2/3)O3 (PZN) ceramic is used to improve the piezoelectric properties of PZT ceramics. Complete perovskite phase is synthesized for PZN content up to 10 mol%. Piezoceramics having dielectric constant higher than 3000 and planar coupling factor about 60% are obtainable. However, these properties seem to be deteriorated by decreasing the thickness of ceramic plate. Plate with thickness smaller than 100μm shows nothing in superior piezoelectric properties. The second phase ZrO2 due to the evaporation of PbO phase during sintering is the dominant factor. This non-piezoelectric phase exists on the surface of piezoceramic plate and gradually plays an important role when thickness is thin enough. Experimental results demonstrate both the control of PbO vapor pressure and the processing conditions can effectively reduce such deterioration.
- Published
- 1992