Title of article :
Effect of WO3 doping on dielectric temperature characteristics of lead complex perovskite ferroelectric ceramics
Author/Authors :
Zhang، نويسنده , , Xian-Yong and Gui، نويسنده , , Zhilun and Li، نويسنده , , Longtu and Tian، نويسنده , , Jiemo، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
The effect of WO3 doping on the dielectric temperature characteristics and the microstructure of a ternary ceramic system were investigated. Both the increase of WO3 doping level and the increase of sintering temperature led to a decrease in dielectric constant and the flatting of dielectric curves. The presence of a liquid phase and the pyrochlore phase cause this decrease. Also, microstructural and elemental analyses of the ceramics revealed the structure within one grain consists of three parts: the core, the shell and in-between one. This inhomogeneous composition distribution contributes to flat dielectric temperature dependence.
Keywords :
Doping , Inhomogeneous distribution , Relaxor ferroelectrics , Dielectric temperature characteristics
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Journal title :
MATERIALS SCIENCE & ENGINEERING: B