Interaction of gold nanoparticles in barium titanate thin films.

A novel approach to control the grain size of oxide thin film materials has been investigated. Perovskite BaTiO(3) shows interesting grain structures when deposited on gold predeposited, (111)-oriented, single-crystal SrTiO(3) substrates. Solid oxide films grow epitaxially on patterned seed layers and show variations in grain size relative to the films deposited on SrTiO(3) directly.