Influence of Cation Nonstoichiometry on the Optical Properties of the Perovskite-type Oxynitride LaTiO2N

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  • MORIGA Toshihiro
    Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima
  • IKEUCHI Kaoru
    Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, The University of Tokushima
  • MASHIMA Ryota
    Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, The University of Tokushima
  • AOKI Daisuke
    Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, The University of Tokushima
  • MURAI Kei-ichiro
    Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima

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A series of perovskite-type LaTiO2N materials with compositions a slightly deviated from the stoichiometric metal composition was prepared. The cation nonstoichiometry in the oxynitrides affected not on the bandgap but on the reflectivity. It seemed that the more ratio of titanium to lanthanum resulted in lower reflectivity.<br>

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