The nano crystalline ferroelectric perovskite ceramic Lead Barium Titanate (PbBaTiO3) is designed and synthesised by high temperature solid state reaction method (weighing, mixing, milling and calcination of raw materials). This perovskite is made in a specially designed furnace which allows oxygen flow during cooling process after calcination. Final calcination temperature is optimised by trial and error method at 900 degree Celsius to obtain desired crystal structure, crystal system and phase formation. This paper discusses the thermal properties of PbBaTiO3 using TGA, DTG and DSC and IR spectroscopy methods of thermal characterization.