Abstract
Ce-doped bismuth titanate (Bi4-xCexTi3O12: BCT) and pure Bi4Ti3O12 (BIT) thin films with random orientation were fabricated on Pt/Ti/SiO2/Si substrates by pulsed laser deposition technique. These samples had polycrystalline Bi-layered perovskite structure without preferred orientation, and consisted of well developed rod-like grains with random orientation. The experimental results indicated that Ce doping into BIT result in a remarkable improvement in ferroelectric propertis. The Pr and the Ec values of the BCT film with x=0.75 were 23 μC/cm2 and 80 kV/cm, respectively.
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