Title :
Dielectric pyroelectric and piezoelectric properties in the Pb(Mg 1/3Nb2/3)O3-PbTiO3-Pb(Zn 1/3Nb2/3)O3 system
Author :
Lee, S.H. ; Kim, K.C. ; Kim, Y.J. ; Choi, S.W.
Author_Institution :
Dept. of Phys., Dankook Univ., Chungnam, South Korea
fDate :
30 Aug-2 Sep 1992
Abstract :
The dielectric, pyroelectric, and piezoelectric properties of ceramics in the PMN-PT-PZN system have been studied as a function of PT and PZN content for compositions near the morphotropic phase boundary (PMN-PT). The dielectric constant and loss of poled ceramic samples were determined. The pyroelectric coefficient and electromechanical coupling factor were studied for various compositions. The transition temperature and peak temperature of the ceramics decreased gradually with the addition of PZN; their rates of decrease were about 5-7°C/mol.%. The addition of PZN to the PMN-PT relaxor ferroelectric system resulted in a slightly reduced dielectric constant. Further addition of PZN could be used to shift the Tc downward without significantly changing the electrical behavior
Keywords :
ceramics; dielectric losses; ferroelectric Curie temperature; ferroelectric transitions; lead compounds; permittivity; piezoelectric materials; pyroelectricity; PMN-PT relaxor ferroelectric system; PMN-PT-PZN system; PMN-PbTiO3-PbZnO3NbO3; Pb(Mg1/3Nb2/3)O3-PbTiO3 -Pb(Zn1/3Nb2/3)O3; PbMgO3NbO3-PbTiO3-PbZnO3NbO3; ceramics; dielectric constant; dielectric loss; electromechanical coupling factor; morphotropic phase boundary; piezoelectric properties; poled ceramic samples; pyroelectric coefficient; pyroelectric properties; temperature dependence; transition temperature; Ceramics; Dielectric constant; Dielectric measurements; Frequency; Lead; Niobium; Open systems; Pyroelectricity; Relaxor ferroelectrics; Temperature;
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.1992.300732
