首页|The Effect of Calcination Temperatures on the Phase Formation and Microstructure of (Pb_(1-x)Sr_x)TiO_3 Powders
The Effect of Calcination Temperatures on the Phase Formation and Microstructure of (Pb_(1-x)Sr_x)TiO_3 Powders
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Trans Tech Publications Ltd
(Pb_(1-x)Sr_x)TiO_3 (PST) (x=0.25, 0.50) powders were synthesized by a mixed oxide solid-state reaction method under various calcination temperatures (600-1100℃). Powder samples were characterized using thermogravimetric (TGA), differential thermal analysis (DTA), x-ray diffractrometer (XRD) and scanning electron microscopy (SEM). The results showed that a single-phase of PST for x=0.25 and 0.50 powders was successfully obtained with a calcination condition of 950 ℃ for 2 h with a heating/cooling rate of 5℃/min. The TGA-DTA results corresponded to the XRD investigation. The lattice parameter a increased whilst the lattice parameter c decreased with increasing calcination temperatures. The tetragonality of powders decreased with an increase of calcination temperatures. The average particle size of the powders increased with the increase of calcination temperature.
lead strontium titanatemixed oxidetetragonalitycalcination temperature
R. Sumang、T. Bongkarn
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Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, THAILAND
NETL
NSTL
Trans Tech Publications Ltd
