Effect of field cooling AC poling on electrical and physical properties for Pb(Mg <sub>1/3</sub> Nb <sub>2/3</sub> )O <sub>3</sub> -PbTiO <sub>3</sub> -based single crystals manufactured by a continuous-feeding Bridgman process
Cong Luo, Tomoaki Karaki, Yiqin Sun, Yohachi Yamashita, Jiayue Xu
Abstract
Abstract We have designed and fabricated a compact, 250 cm 3 electric field cooling alternate current poling (FC ACP) system and obtained an enhanced dielectric permittivity ( ε T 33 / ε 0 ) of 7920 which was 10 to 33% larger than that of high temperature (HT) ACP of 0.70Pb(Mg 1/3 Nb 2/3 )O 3 -0.30PbTiO 3 (PMNT) single crystal (SC) with phase change temperature ( T pc ) of 93 °C. However, when the FC ACP temperature from 200 to 35 °C was applied for 0.31Pb(In 1/2 Nb 1/2 )O 3 -0.43Pb(Mg 1/3 Nb 2/3 )O 3 -0.26PbTiO 3 (PIMNT) SC with a T pc of 136 °C, the ε T 33 / ε 0 decreased by 55% compared with that of HT ACP. Temperature dependence of the ε T 33 / ε 0 and phase analysis by X-ray diffraction of these SCs produced by a continuous-feeding Bridgman process showed clear different properties. We conclude the effects of FC ACP on the electrical and physical properties are different from the compositions, T pc , Curie temperature, etc., and it is required to find the best FC ACP condition according to each SC.