Oxidation mechanism of LaTiO3.5 thin films - art. no. 205401

LaTiO3.5 is a layered compound made up of four LaTiO3 units: two regular pe rovskite units stacked between two distorted units that share an additional oxygen layer. In a single-crystalline thin film the (100) plane can be ali gned parallel to the substrate surface, i.e., the additional oxygen layers are inserted parallel to the substrate surface. A detailed structural chara cterization reveals planar defects originating from substrate surface steps . These results, in combination with the in situ reflection high-energy ele ctron-diffraction observations, suggest an oxidation mechanism using such a ntiphase boundaries as oxidation paths.