Effect of ZrO2 Doping on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics

Panadda Sittiketkron; S. Sukkho; Theerachai Bongkarn

doi:10.4028/www.scientific.net/AMR.55-57.169

Paper Titles

Characterization of LiNbO₃Powder Prepared by Citrate Gel Method
p.153

X-Ray Absorption Spectroscopy Study of Ba_1-xSr_xTiO₃(x = 0.0-0.2) at the Ti-K and Ba-L_III Edges
p.157

Synthesis of Na_0.5Bi_0.5TiO₃ Submicron Particles in Molten Salt
p.161

Effects of Starting Materials on Molten Salt Synthesis of Bi₄Ti₃O₁₂
p.165

Effect of ZrO₂ Doping on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics
p.169

Fabrication of Barium Stannate Tatanate Ceramics via Combustion Technique
p.173

The Effect of Excess PbO on Crystal Structure and Microstructure of (Pb_0.925Ba_0.075)TiO₃ Ceramics
p.177

The Preparation of Barium Stannate Titanate Ceramics via Solid State Reaction Method
p.181

Preparation of Barium Strontium Titanate Ceramics via Combustion Method
p.185

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Effect of ZrO₂ Doping on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics

Abstract:

In this work, the effect of ZrO2 doping on the properties of PbTiO3 ceramics was investigated. PbTiO3 powders were prepared via a mixed oxide method with a calcination temperature of 750 °C for 2 h. The various amounts of ZrO2, between 0 and 2 wt.%, were added to the calcined powders to decrease the c/a ratio. The mixed powders were sintered at 1225 °C for 2 h. The samples were characterized using X–ray diffractrometer (XRD), scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). It was showed that the ZrO2 phase was not detected in all of the powder and ceramic samples. The highest density in the ceramics was found in the sample with 0.5 wt.% of ZrO2. The average grain size slightly increased with the increase of ZrO2. The phase transition temperature from tetragonal ferroelectric to cubic paraelectric was about 465 to 466 °C for all sintered samples.