LaCrO3 heteroepitaxy on SrTiO3(001) by molecular beam epitaxy
  Stoichiometric, epitaxial LaCrO3 films have been grown on TiO2-terminated SrTiO3(001) substrates by molecular beam epitaxy using O2 as the oxidant. Film growth occurred in a layer-by-layer fashion, giving rise to structurally excellent films and surfaces which preserve the step-terrace structure of the substrate. The critical thickness is in excess of 500 {\AA}. Near-surface Cr(III) is highly susceptible to further oxidation to Cr(V), leading to the formation of a disordered phase upon exposure to atomic oxygen. Recovery of the original epitaxial LaCrO3 phase is readily achieved by vacuum annealing. 
L. Qiao, T.C. Droubay, M.E. Bowden, V.Shutthanandan, T.C. Kaspar, S.   A. Chambers
cond-mat.mtrl-sci