Title :
Dielectric, piezoelectric, and pyroelectric properties of Sr-doped PMT-PT solid solution ceramics
Author :
Jung, J.M. ; Park, Y.H. ; Choi, S.W.
Author_Institution :
Dept. of Phys., Dankook Univ., Chungnam, South Korea
Abstract :
Dielectric, piezoelectric and pyroelectric properties of 0.65(Pb 1-xSrx)(Mg1/3Ta2/3)O3 -0.35PbTiO3 (0⩽x⩽0.12) solid solution near the morphotropic phase boundary (PMT-PT) have been investigated. Dielectric constant and loss of poled ceramic samples were determined. The electromechanical coupling factor and piezoelectric d33 constant were measured for various compositions in the ceramics. The pyroelectric coefficient and spontaneous polarization were measured by the static Byer-Roundy method as a function of temperature. The values of dielectric constant, piezoelectric d33 constant and pyroelectric coefficient for Sr-doped PMT-PT are larger compared to the values observed for undoped PMT-PT ceramics. Transition temperature is continuously shifted to lower temperature with increase of a small amount of SrCO3
Keywords :
dielectric losses; dielectric polarisation; ferroelectric materials; ferroelectric transitions; lead compounds; permittivity; piezoceramics; pyroelectricity; strontium compounds; ((PbSr)(MgO3)(Ta2O3))0.65(PbTiO 3)0.35; 0.65(Pb1-xSrx)(Mg13/Ta23/)O 3-0.35PbTiO3; ceramics; dielectric; dielectric constant; dielectric loss; electromechanical coupling factor; morphotropic phase boundary; piezoelectric; piezoelectric d33 constant; pyroelectric; pyroelectric coefficient; spontaneous polarization; static Byer-Roundy method; transition temperature; Ceramics; Dielectric constant; Dielectric losses; Dielectric measurements; Grain size; Piezoelectric polarization; Pyroelectricity; Solids; Surface cracks; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522499
