Title :
Piezoelectric properties and phase transitions of PbNi1/3Nb2/3O3-PbTiO3-PbZrO 3 ceramics
Author :
Kondo, Masao ; Hida, Masaharu ; Tsukada, Mineharu ; Kurihara, Kazuaki ; Kutami, Michinori ; Kamchara, Nobuo
Author_Institution :
Fujitsu Labs. Ltd., Atsugi, Japan
Abstract :
In this study, the phase transition behavior of PbNi1/3Nb2/3O3-PbTiO3-PbZrO 3 (PNN-PT-PZ) ceramics was investigated. Dielectric properties in PNN-PT-PZ ceramics with the compositions near morphotropic phase boundary (MPB) are studied as a function of temperature. The ceramics with tetragonal phase at room temperature only have a phase transition from tetragonal to cubic with elevated temperature. The ceramics with rhombohedral phase at room temperature show the phase transitions from rhombohedral to tetragonal and from tetragonal to cubic with the increase of temperature. The studies revealed the MPB has a curvature. The large longitudinal electromechanical coupling coefficient (k33=0.8) is obtained in the composition along the curvature
Keywords :
ferroelectric transitions; lead compounds; piezoceramics; solid-state phase transformations; PbNi0.33Nb0.67O3-PbTiO3 -PbZrO3; PbNi1/3Nb2/3O3-PbTiO3 -PbZrO3 ceramics; dielectric properties; large longitudinal electromechanical coupling coefficient; morphotropic phase boundary; phase transitions; piezoelectric properties; room temperature; tetragonal phase; tetragonal to cubic transition; Actuators; Ceramics; Dielectrics; Laboratories; Niobium; Permittivity; Powders; Solids; Temperature; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786696
