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Dielectric Properties of Pb(Zn‚Nb)(Sn‚Nb)(Zr‚Ti)O3 Ceramics

ZHOU Jing, CHEN Wen, XU Qing, CUI Wanqiu

(Wuhan University of Technology)

Abstract: The temperature dependence and frequency dependence of dielectric constant of PZSN piezoelectric ceramics are analyed.The results show that PZSN has no definite phase change temperature and it is the characteristic of diffuse phase transition.The frequency dependence of dielectric constant peak is the counterpart of the spatial tropism of O-Ti-O and O-Zr-O dipoles.But when the temperature is over the Courier temperature(Tcav)‚the dipoles are not existed at the antiferroelectric.It shows that their performance is related to phase change. 

Keywords: PZSN piezoelectric ceramics‚phase change‚dielectric properties


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