Sintering behaviour of samarium modified lead calcium titanate ceramics

Modified Lead Calcium Titanate (PCT) compositions with representative formula, Pb0.76-xSmxCa0.24Ti0.98 Mn-0.02 O-3 (x = 0-0.1 in steps of 0.02) were prepared by conventional dry ceramic method. Effects of samarium substitution on physical, structural properties and thermal behaviour of PCT ceramics are reported here. All the samples were subjected to XRD analysis and were found to have single phase with tetragonal structure up to 8 mol% Sm substitution. The variations of density and tetragonality have been studied with samarium content. Microstructural analysis shows the uniform grain growth with increasing Sm concentration. Dilatometric study has been done to predict sintering schedule of the green samples.