Title :
Dielectric and piezoelectric properties of the Pb(In1/2Ta1/2)O3-PbTiO3 solid solution system
Author :
Alberta, E.F. ; Bhalla, A.S.
Author_Institution :
Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA
Abstract :
The dielectric, pyroelectric and piezoelectric properties of the solid solution: (1-x)Pb(In1/2Ta1/2)O3-(x) PbTiO3 [PIT:PT] have been investigated. A high dielectric constant and remanent polarization were obtained for compositions near the morphotropic phase boundary. In this system the morphotropic phase boundary was found to be located at a composition with x=38 mol% PT. For this composition, the dielectric constant was found to be 2300 at room temperature and increased to 13000 near 248°C. The remanent polarization for this composition was approximately 26 μC/cm2 and corresponds to a coercive field of 11 kV/cm. Finally, poled ceramics of the morphotropic phase boundary composition yielded a piezoelectric coefficient, d33, of 315 pC/N and piezoelectric coupling coefficients, kp and k31, of 37% and 20%, respectively
Keywords :
dielectric polarisation; lead compounds; permittivity; piezoceramics; pyroelectricity; 23 degC; 248 degC; Pb(In1/2Ta1/2)O3-PbTiO3 solid solution system; PbInO3TaO3-PbTiO3; coercive field; dielectric constant; dielectric properties; morphotropic phase boundary; piezoelectric coefficient; piezoelectric coupling coefficients; piezoelectric properties; poled ceramics; pyroelectric properties; remanent polarization; room temperature; Ceramics; Dielectric constant; Dielectric materials; Dielectric measurements; Piezoelectric materials; Piezoelectric polarization; Powders; Pyroelectricity; Solids; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786715
