For the first time, we have demonstrated that epitaxial Ba0.6Sr0.4TiO3thin films can be grown on the epitaxial RuO2electrodes by pulsed laser ablation. The Ba0.6Sr0.4TiO3films, deposited on epitaxial (200) oriented RuO2grown on (100) yttria-stabilized zirconia, exhibit single out-of-plane orientation as well as in-plane alignments. The detailed epitaxial relationships between the Ba0.6Sr0.4TiO3films and the RuO2electrodes have been analyzed by X-ray diffraction and transmission electron microscopy.