Title :
Relaxor behavior in Ba (Zn13/Nb/2/3/) O3PbTiO3 new solid solution
Author :
Long, Xifa ; Ye, Zuo-Guang
Author_Institution :
Chinese Acad. of Sci., Fuzhou
fDate :
12/1/2007 12:00:00 AM
Abstract :
Relaxor behavior has been found in a new solid solution between complex perovskite Ba(Zn1/3Nb2/3)O3 (BZN) and ferroelectric PbTiO3 (PT), prepared by solid state reactions. A strong dispersion of the maximum of dielectric permittivity (epsiv´) appears around the temperature of Tm, which shifts toward higher temperatures with increasing frequency. The variation of Tm with frequency follows the Vogel-Fulcher relationship. The variation of 1/epsiv´ with temperature above Tmmiddot deviates from the Curie-Weiss law, but satisfies a Lorentz-type function. The relaxor behavior becomes weaker upon increasing PT-content. increasing PT-content.
Keywords :
barium compounds; lead compounds; permittivity; relaxor ferroelectrics; Ba(Zn0.33Nb0.67)O3-PbTiO3; Curie-Weiss law; Lorentz-type function; Vogel-Fulcher relationship; complex perovskite; dielectric permittivity; relaxor behavior; solid solution; solid state reactions; Ceramics; Dielectric materials; Dielectric measurements; Ferroelectric materials; Frequency; Permittivity; Relaxor ferroelectrics; Solid state circuits; Temperature; Zinc; Ceramics; Computer Simulation; Crystallization; Electric Conductivity; Electric Impedance; Lead; Materials Testing; Models, Chemical; Molecular Conformation; Temperature; Titanium;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2007.584
