Microstructure and electrical conductivity of epitaxial BaRuO3 thin films prepared on (001), (110) and (111) SrTiO3 substrates by laser ablation

BaRuO3 (BRO) thin filius were prepared on SrTiO3 (STO) single crystal substrate by laser ablation, and their microstructures and the anisotropy of electrical conductivity were investigated. The (205) and (104) doubly oriented BRO thin film was grown epitaxially on (001) STO substrate. Epitaxial (110) and (009) BRO thin films were obtained on (110) and (111) STO Substrates, respectively, at oxygen pressure of 13 Pa and substrate temperature of 973 K. Epitaxial (205) (104) BRO thin fi I in had a tetragonal I texture whereas (110) BRO thin film Showed a faceted island texture. Epitaxial (009) BRO thin films had a smooth surface clue to a good lattice consistency between (009) BRO plane and (111) STO plane. and exhibited the highest electrical conductivity of 1.1 x 10(5) S.m(-1) among the (205) (104) (110) and (009) BRO thin films.