Title :
Influence of poling temperature on aging and thermal stability of PZT ceramics
Author :
De Medeiros, Jarnilson P. ; Lente, M.H. ; Eiras, J.A.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
PZT compositions, near the morphotropic phase boundary, doped with 1 wt% of donors ions (La and Nb) and acceptor ion (Fe) were prepared by a conventional ceramic method. Aging and temperature dependence of the frequency constant, obtained after poling at room temperature, 80°C and 120°C, are presented. Increasing the poling temperature caused a decrease in the aging rate for doped ceramics. Undoped and Fe doped ceramics show a positive temperature coefficient of the frequency constant, while negative coefficients were observed for Nb and La ceramics
Keywords :
ageing; lead compounds; piezoceramics; thermal stability; 20 to 120 C; PLZT; PZT; PZT ceramics; PbFeZrTiO3; PbLaZrO3TiO3; PbNbZrTiO3; PbZrO3TiO3; aging; doped ceramics; frequency constant; morphotropic phase boundary; negative temperature coefficient; poling temperature; positive temperature coefficient; temperature dependence; thermal stability; Aging; PZT materials/devices; Thermal factors;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401700
