Epitaxial synthesis of Srn+1TinO3n+1 (n=2-5) Ruddlesden-Popper homologous series by pulsed-laser deposition

Ruddlesden-Popper homologous series of Srn+1TinO3n+1 (2 <= n <= 5) compounds were synthesized with accumulating SrO monolayers and n unit cells of SrTiO3 layers alternately in a pulsed-laser deposition. The successive deposition of these layers at a constant growth temperature (T-g) of 780 degrees C resulted in a solid-solution film. When we varied the T-g between the independently optimized 575 and 780 C for SrO and SrTiO3 depositions, respectively, a persistent intensity oscillation of reflection high energy diffraction was observed. The film structures on (001) SrTiO3 substrates were evaluated by X-ray diffraction measurements and compared to previously reported films grown by molecular-beam epitaxy. (C) 2008 The Japan Society of Applied Physics.