Dielectric and piezoelectric properties of high curie temperature 0.63Bi(Mg1/2Ti1/2)O3–0.37PbTiO3 single crystals with morphotropic phase boundary composition. (November 2016)

• Record Type: Journal Article
• Authors: Tian, Yanfeng; Xu, Guisheng; Liu, Jinfeng; Zhu, Xiu
• Is Part Of: Solid state communications. Volume 245(2016)
• Page Start: 50
• Page End: 54
• Publication Date: 2016-11
• Subjects: A. BMT-PT single crystals -- B. Crystal growth -- D. Dielectric properties -- D. Piezoelectric properties; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2016.07.025
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: Novel perovskite ferroelectric 0.63Bi(Mg1/2 Ti1/2 )O3 –0.37PbTiO3 (0.63BMT–0.37PT) single crystals with a composition around the morphotropic phase boundary (MPB) were successfully grown by a self-flux method. They presented Curie temperature ( T c ) about 460 °C and a rhombohedral to tetragonal phase transition temperature (Tr-t) 249 °C. The piezoelectric constant d 33 for (001) oriented 0.63BMT–0.37PT single crystals reached 320pC/N, which was higher than that (208pC/N) in the tetragonal phase 0.38BMT–0.62PT crystals. The large piezoelectric constant d 33 and high T c make BMT–PT single crystals promising candidates used for the next generation of high performance and high temperature actuators and transducers. Highlights: Novel perovskite ferroelectric 0.63BMT–0.37PT single crystals near the morphotropic phase boundary were successfully grown by a self-flux method. The 0.63BMT–0.37PT single crystals presented high Curie temperature ( T c ) about 460 °C and a rhombohedral to tetragonal phase transition temperature (Tr-t) 249 °C. The d 33 of 0.63BMT–0.37PT single crystals is 320pC/N, much higher than that of ceramics with the same composition (220pC/N).