La 0.5 Ca 0.5 MnO 3 films of various thicknesses were epitaxially grown on (111) SrTiO 3 substrates by the pulsed laser deposition technique. Electronic and magnetic properties of the films deviate considerably from the bulk material; enhancement of electrical conductivity and drastically enlarged magnetic moment (relative to bulk value) are observed although the identified orientational relationship as revealed by X-ray diffraction technique indicates tensile epitaxial stain. Transport properties were found to depend strongly on film thickness. These results were discussed in terms of the orientation of the epitaxial strain with respect to the La 0.5 Ca 0.5 MnO 3 unit cell, distinguishing it from commonly used substrates.