Title :
Dielectric properties and phase transitions of <001>-oriented Pb(Zn13/Nb23/)O3-PbTiO3 single crystals
Author :
Ren, W. ; Liu, S-F. ; Mukherjee, B.K.
Author_Institution :
Dept. of Phys., R. Mil. Coll. of Canada, Kingston, Ont., Canada
fDate :
28 May-1 June 2002
Abstract :
The temperature dependence of dielectric properties and phase transitions of <001> oriented (1-x)Pb(Zn13/Nb23/)O3-xPbTiO3 (PZN-PT) single crystals for x = 4.5% and x = 8% have been investigated as a function of DC bias field. These crystals exhibit frequency dispersion and increasing the PT content in die crystals suppresses the degree of relaxor behavior. As the bias field increases over a critical value, the temperature of the tetragonal-cubic phase transition increases but the temperature of the rhombohedral-tetragonal phase transition decreases with bias field. A bias field can stabilize the tetragonal phase in <001> oriented PZN-PT crystals resulting in a long-range ordered state and induced normal ferroelectric behavior.
Keywords :
ferroelectric materials; ferroelectric transitions; lead compounds; permittivity; relaxor ferroelectrics; solid-state phase transformations; DC bias field; Pb(Zn13/Nb23/)O3-PbTiO3 single crystals; PbZnO3NbO3-PbTiO3; bias field; dielectric properties; frequency dispersion; induced normal ferroelectric behavior; long-range ordered state; phase transitions; relaxor behavior; rhombohedral-tetragonal phase transition; temperature dependence; tetragonal-cubic phase transition; Crystals; Dielectric constant; Dielectric loss measurement; Dielectric losses; Ferroelectric materials; Frequency; Niobium; Relaxor ferroelectrics; Temperature dependence; 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.2002.1195958
