Barium Strontium Titanate (BST) thin films are electronic devices based on ferroelectrics formed from Barium Carbonate (BaCO3) doped with Strontium Carbonate (SrCO3) and Titanium Isopropoksida Ti(OC3H7)4 . BST thin films with different of compositions (x = 0.45 ; 0.55 and 0.65) were made on the glass substrate using the sol-gel method and annealing process at different temperatures ie 600oC,…