Title :
Mixed sintering of PbZrO3 rich PZT based ceramics and their pyroelectric properties
Author :
Lian, J. ; Okumura, N. ; Adachi, M. ; Shiosaki, T. ; Kawabata, A.
Author_Institution :
Dept. of Electron., Kyoto Univ., Japan
Abstract :
The phase transition between two ferroelectric phases F R(LH) and FR(HT) gives high pyroelectric coefficient but only in a very narrow temperature range. The study was carried out in order to extend the phase transition temperature of composite ceramics through a mixed sintering method. Two kinds of starting materials with Zr/Ti ratios of 90/10 and 94/6, respectively, were prepared to broaden the phase transition temperature. Two phase transition temperatures for FR(LH) to FR(HT), which give double peaks in the temperature dependence of the pyroelectric coefficient were observed. A mixed sintered PbZrO3-PbTiO3-Pb(Zn1/3Nb2/3 )O3 (PZT-PZN) ternary system ceramic with Pb5Ge3O11 (PGO) as a liquid phase was also studied, and the pyroelectric properties were investigated
Keywords :
ceramics; ferroelectric materials; ferroelectric transitions; lead compounds; pyroelectricity; sintering; PZT based ceramics; PbZrO3TiO3; ferroelectric phases; phase transition; pyroelectric properties; sintering; Atmosphere; Automatic control; Ceramics; Composite materials; Current measurement; Firing; Powders; Pyroelectricity; Temperature control; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200267
