[摘要]:Ba(Fe1-xCo2)(2)As-2 superconducting thin films have. been grown on SrTiO3, (La, Sr)(Al, Ta)O-3, LaAlO3, and YAlO3 (YAO) single crystal substrates by pulsed laser deposition. All the films, except on YAO. have been grown epitaxially without buffer layers.