Title :
Dielectric and piezoelectric properties as a function of temperature for Pb(Yb12/Nb12/)O3-PbTiO3 single crystals
Author :
Zhang, Shujun ; Lebrun, Laurent ; Rhee, Sorah ; Randall, Clive A. ; Shrout, Thomas R.
Author_Institution :
Material Res. Inst., Pennsylvania State Univ., University Park, PA, USA
fDate :
28 May-1 June 2002
Abstract :
The dielectric and piezoelectric properties of high Curie temperature 0.6Pb(Yb12/Nb12/)O3-0.4PbTiO3 (PYNT40) single crystals as a function of temperature are reported. The Curie temperature of PYNT40 single crystals was about 270°C and the rhombohedral to tetragonal phase transition temperature was ∼168°C. The piezoelectric and electromechanical coupling coefficients at room temperature were d33 ∼ 1200pC/N, k33 ∼ 88%, d 31 ∼ -500 pC/N, k31 ∼ -76% and d15 ∼ 1700pC/N, k15 ∼ 88%, respectively. The coupling coefficients remained nearly constant until ∼160°C, indicating improved temperature stability compared to Pb(Zn13/Nb23/)O3-PbTiO3 and Pb(Mg13/Nb23/)O3-PbTiO3 single crystals.
Keywords :
dielectric losses; electric domains; ferroelectric Curie temperature; lead compounds; permittivity; piezoelectric materials; relaxor ferroelectrics; thermal stability; Pb(YbNb)O3-PbTiO3; coercive field; dielectric loss; dielectric properties; domain stability; electromechanical coupling coefficients; high Curie temperature crystals; permittivity; piezoelectric properties; piezoelectric single crystals; rhombohedral tetragonal phase transition; room temperature; shear modes; temperature dependence; temperature stability; transverse properties; Bars; Crystals; Dielectric losses; Equations; Niobium; Permittivity; Piezoelectric materials; Resonance; Stability; Temperature distribution;
Conference_Titel :
Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on
Print_ISBN :
0-7803-7414-2
DOI :
10.1109/ISAF.2002.1195966
