Characterization micro/nanostructures of barium strontium titanate

Abstract

Structural characteristics of Ba0.0975S0.025TiO3 (BS0.025T) ceramics calcined at different temperatures at 800, 850 and 900°C for 4 hours hove been investigated. Results DRX showed that the change in the cell parameter along a axis (a) is more important than that along c axis and is accompanied by spacing of these parameters. In addition they indicate that the diminuation of symmetry is caused by the increase of the calcination temperature This trend towards the tetragonale phase was confirmed by Raman spectroscopy. Electronic scan microscopy (SEM) has given the grains mean size, the latter increase and reaches a mean size of approximately 1.97 ìm when the calcination temperature increases equals 900°C.