Piezoelectric and dielectric properties of Cr-doped PSN-PZN-PZT qua-ternary piezoelectric ceramics

作     者：SUNQingchi WANGLifeng LIUPing NIEQiang SUN Qingchi1), WANG Lifeng1), LIU Ping1), and NIE Qiang2) 1) School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China 2) School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

作者机构：SchoolofMaterialsScienceandEngineeringTianjinUniversityTianjin300072China SchoolofChemicalEngineeringandTechnologyTianjinUniversityTianjin300072China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2005年第24卷第2期

页      面：185-189页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

主　　题：inorganic nonmetallic materials PSN-PZN-PZT conventional solid reaction process Cr2O3 content sintering temperature piezoelectric properties 

摘      要：PSN-PZN-PZT + x wt. %Cr2O3, X = 0.0-0-9, were prepared by conventional mixed oxide techniques at sintering temperatures of 1220 degrees C-1300 degrees C for 2 h. The effect of sintering temperature on the microstructure and the piezoelectric properties was investigated by XRD, SEM, and other conventional measurement. The result indicated that with temperature increasing, the valence of Cr ion from Cr5+ or Cr6+ changes into C3+, and the piezoelectric properties turn hard. With increasing Cr2O3 content, the amount of rhombohedral phases increases and the morphotropic boundary phase is correspondingly shifts to rhombohedral phase. A uniform microstructure and excellent comprehensive properties were obtained at 1240 degrees C as the amount of Cr2O3 is 0.5 wt.%.