Title :
Hysteresis behaviour and piezoelectric properties of Nb doped PLZT ceramics
Author :
Murty, K. V Ramana ; Umakantham, K. ; Murty, S. Narayana ; Mouli, K. Chandra ; Bhanumathi, A.
Author_Institution :
Dept. of Phys., Andhra Univ., Waltair, India
fDate :
30 Aug-2 Sep 1992
Abstract :
The effect of niobium doping on the microstructure, hysteresis, and piezoelectric properties of PLZT (lead lanthanum zirconate titanate) (5/65/35) ceramics is investigated. Saturation polarization is obtained with 0.5 mole.% Nb added. Nb doping inhibits the grain growth. The room-temperature dielectric constant increases and the ferroelectric Curie temperature decreases with Nb content. Optimum piezoelectric coefficients are also obtained with 0.5 mole.% Nb added
Keywords :
ceramics; crystal microstructure; dielectric hysteresis; dielectric polarisation; ferroelectric Curie temperature; grain growth; grain size; lead compounds; niobium; permittivity; piezoelectric materials; scanning electron microscope examination of materials; PLZT:Nb; PbLaZrO3TiO3:Nb; SEM; ceramics; ferroelectric Curie temperature; grain growth; grain size; hysteresis; microstructure; optimum piezoelectric coefficient; piezoelectric properties; room-temperature dielectric constant; saturation polarisation; Ceramics; Dielectric constant; Doping; Ferroelectric materials; Hysteresis; Lanthanum; Microstructure; Niobium; Piezoelectric polarization; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on
Conference_Location :
Greenville, SC
Print_ISBN :
0-7803-0465-9
DOI :
10.1109/ISAF.1992.300581
