Epitaxial Ba2RuO4 films with the K2NiF4 structure have been grown by pulsed
laser deposition on (100) SrTiO3 substrates. X-ray diffraction and cross-s
ectional transmission electron microscopy results indicate that the films a
re c-axis oriented, single-domain, and contain relatively few stacking faul
ts and intergrowths. Electrical measurements indicate metallic conductivity
to low temperatures, but no evidence of superconductivity. (C) 1999 Americ
an Institute of Physics. [S0003-6951(99)04923-2].