Title :
Dielectric and ferroelectric properties in the Pb(Mg1/3Nb2/3)O3-PbTiO3 -BaTiO3 system
Author :
Lee, S.H. ; Kim, Y.J. ; Shin, Y.H. ; Choi, S.W.
Author_Institution :
Dept. of Phys., Dankook Univ., Chungnam, South Korea
fDate :
30 Aug-2 Sep 1992
Abstract :
Dielectric, pyroelectric, and piezoelectric properties in the (1-x-y)PMN-xPT-yBT solid solution series have been investigated. Approximately 85% of the theoretical density was achieved for pellets sintered at 1250°C for 2 h. The dielectric constant and pyroelectric coefficient increased with increasing grain size for various compositions. Further addition of BaTiO3 affected the electrical properties of PMN-PT, and the phase transition temperature was continuously shifted toward a lower temperature with a small amount of BaTiO3. The maximum electromechanical coupling factor occurred in the compositions 0.60PMN-0.35PT-0.05BT(0.4)
Keywords :
barium compounds; density of solids; ferroelectric Curie temperature; ferroelectric materials; grain size; lead compounds; magnesium compounds; permittivity; piezoelectricity; pyroelectricity; sintering; solid solutions; PbMgO3NbO3-PbTiO3-BaTiO3 system; compositions; dielectric constant; dielectric properties; dissipation factor; electrical properties; electromechanical coupling factor; ferroelectric properties; grain size; pellets; phase transition temperature; piezoelectric properties; pyroelectric coefficient; solid solution series; theoretical density; Ceramics; Dielectric constant; Dielectric measurements; Ferroelectric materials; Frequency; Grain size; Lead; Niobium; Pyroelectricity; Temperature dependence;
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.1992.300666
