Giant Piezoelectric Properties and Photoluminescence Enhancement for Pr ³⁺ Doped PMN-PT Transparent Ceramics

Abstract

Pr³⁺ doped 0.70Pb(Mg_1/3Nb_2/3)O₃-0.30PbTiO₃ (Pr-PMN-PT) transparent ceramics were prepared by hot press sintering method and their electrical and optic properties were investigated. The results showed that Pr-PMN-PT ceramics had very high transparency due to the small domain size. The ceramics exhibited giant piezoelectric properties with quasi-static piezoelectric constant d₃₃=975 pC/N and effective piezoelectric constant d₃₃* =1214 pm/V. Moreover, the transparent Pr-PMN-PT ceramics showed excellent photoluminescence property. The intensity of emission peak at 650nm for transparent Pr-PMN-PT is about 7 times higher than that for opaque Pr-PMN-PT ceramics. The high transparency, giant piezoelectric properties and good photoluminescence make the Pr-PMN-PT ceramics attractive for many novel electro-optic applications.

Keywords: Ferroelectric ceramics, transparent ceramics, piezoelectricity, photoluminescence