Solid-State Solutions of TiO2-SnO2 and SrTiO3-BaTiO3

K. Zakrzewska Institute of Electronics, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland M. Radecka, P. Pasierb, M. Bućko Department of Inorganic Chemistry, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland E. Urbaniec and J. Janas Faculty of Foundry Engineering, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland

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Thin films of TiO2-SnO2 and SrTiO3-BaTiO3 are deposited by rf sputtering. The crystallographic and optical properties near the band gap absorption are investigated as a function of film composition. Systematic displacement of the fundamental absorption edge shows different behaviour for amorphous and polycrystalline samples. Results are discussed in terms of the influence of the substitution on the local environment of Ti ion and Me-O distances. Application of XANES and EXAFS is proposed for the studies of solid-state solutions.

DOI: 10.12693/APhysPolA.91.899 PACS numbers: 73.90.+f, 81.30.Hd