Title :
Dielectric and piezoelectric properties of PNN-PZN-PZT ceramics for actuator application
Author :
Lee, Su-Ho ; Kim, Han-Geun ; Choi, Hun-II ; Sa-gong, Geon
Author_Institution :
Dept. of Electr., Yong-wol Junior Coll., Kangwon, South Korea
Abstract :
In the fields of optics, precision machinery and semiconductor processing, microposition actuators are required for the control of position in the submicron range. In this paper, 0.5PNN-(0.5-x)PZN-xPZT(x:0.0~0.5) ceramics were fabricated with various mole ratios of the PZT powders prepared by a molten-salt synthesis method and PNN, PZN powders prepared by a columbite precursor method. The formation rate of perovskite phase in PNN-PZN-PZT ceramics could be obtained at about 92[%] by using PNN and PZN powders prepared by the columbite precursor method. The bulk density of 0.5PNN-(0.5-x)PZN-xPZT specimens, where the mole ratio K was 0.3, was 7.39~7.42[kg/m3]. The relative permittivity of 0.5PNN-0.2PZN-0.3PZT ceramics was found to be 5,320 and the relaxor ferroelectric feature appeared
Keywords :
ferroelectric Curie temperature; lead compounds; permittivity; piezoceramics; piezoelectric actuators; position control; powder technology; PbNiO3NbO3-PbZrO3NbO3-PbZrO3TiO3; PbNiO3NbO3-PbZrO3NbO3 -PZT; bulk density; columbite precursor method; dielectric properties; displacement transducers; microposition actuators; molten-salt synthesis method; piezoelectric properties; relative permittivity; relaxor ferroelectric feature; submicron range; Actuators; Capacitive sensors; Ceramics; Dielectrics; Electrostriction; Hysteresis; Permittivity; Powders; Relaxor ferroelectrics; Temperature;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.616630
