Loading...
High temperature phases in the 0.98 PbZrO3 -0.02Pb (Ni 1/3Nb2/3) O3 ceramic
Author(s)
Date Issued
July 9, 2009
Type
Article
Abstract
The phase evolution with temperature in the 0.98 PbZrO3 -0.02Pb (Ni1/3Nb2/3) O3 ceramic was investigated with dielectric permittivity and polarization measurements, hot stage transmission electron microscopy, and high temperature x-ray diffraction. Below 190 °C, the ceramic is in the antiferroelectric phase with characteristic 1 4 { 110 } c superlattice diffractions. In this stage, typical antiferroelectric 180° domains were observed. Between 190 and 220 °C, an intermediate phase, which is characterized by 1 2 { 110 } c -type superlattice diffractions, was detected. Evidences are found to suggest that this intermediate phase is ferroelectric. The 1 2 { 110 } c -type superlattice diffraction persists even into the paraelectric phase above 220 °C. In addition, there exists an incommensurate phase between the low temperature antiferroelectric phase and the intermediate ferroelectric phase. © 2009 American Institute of Physics.
Citation
Journal of Applied Physics, 105(1), 2009