Growth behavior of amorphous Ca and La modified PbTiO3 thin film

The growth behavior of amorphous Ca and La modified PbTiO3 (PLCT) thin film has been studied in terms of the dynamic scaling approach, and the various scaling exponents associated with self-affine film surface have been characterized by small angle x-ray scattering technique. The results indicate that the amorphous relaxation has much influence on the growth behavior of films. For the light amorphous relaxation, the static scaling exponent α is 0.57, which suggests the surface diffusion dominates the surface morphology. As the effect of amorphous relaxation increasing, α is 0.30, suggests the desorption process is controlled mainly by the atomistic relaxation.