LaTiO(3.5) is a layered compound made up of four LaTiO(3) units: two regular perovskite units stacked between two distorted units that share an additional oxygen layer. In a single crystalline thin film the (100) plane can be aligned parallel to the substrate surface, i.e. the additional oxygen layers are inserted parallel to the substrate surface. Detailed structural characterization reveals planar defects originating from substrate surface steps. These results in combination with the in situ RHEED observations suggest an oxidation mechanism using such antiphase boundaries as oxidation paths.
By: J. W. Seo, J. Fompeyrine, H. Siegwart, and J.-P. Locquet
Published in: Physical Review. B. Condensed Matter, volume 63, (no 20), pages 5401 in 2001
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