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Growth by laser ablation of Ti-based oxide films with different valency states

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La2/3+yTiO3-δ perovskite (with δ≤0.5) were deposited by the laser ablation technique from Li0.33La0.56TiO3 targets. Their growth onto MgO substrateswas studied as a function of the oxygen pressure. For films grown in vacuum (10-6 mbar), a La0.63TiO2.5 composition was obtained, meaning that Ti3+ alone is present in the films, while Li ions are not incorporated under these conditions. This material shows good electric conductivity (ρ=500 mΩ cm). By contrast, insulating films with a Li0.1La0.70TiO3 composition corresponding to the Ti4+ species were obtained at high oxygen pressures (>0.05 mbar). For all conditions, textured films were grown with different orientations depending on the temperature and the oxygen pressure.

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Authors and Affiliations

  1. Groupe de Physique des Solides, CNRS UMR 17, Universités Paris VII et Paris VI, Tour 23, 2, Place Jussieu, 75251 Paris Cedex 05, France (Fax: +33-1/4354-2878, E-mail: perriere@gps.jussieu.fr), , , , , , FR

    M. Morcrette, A. Gutiérrez-Llorente, A. Laurent & J. Perrière

  2. Physique de la Matière Condensée, CNRS URA 1254, Ecole Polytechnique, 91128 Palaiseau Cedex, France, , , , , , FR

    P. Barboux & J.P. Boilot

  3. Laboratoire de Génie des Matériaux, ISITEM, Rue Christian Pauc, BP 90604, 44306 Nantes Cedex 3, France, , , , , , FR

    O. Raymond & T. Brousse

Authors
  1. M. Morcrette
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  2. A. Gutiérrez-Llorente
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  3. A. Laurent
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  4. J. Perrière
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  5. P. Barboux
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  6. J.P. Boilot
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  7. O. Raymond
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  8. T. Brousse
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Received: 10 September 1997/Accepted: 24 November 1997

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Morcrette, M., Gutiérrez-Llorente, A., Laurent, A. et al. Growth by laser ablation of Ti-based oxide films with different valency states . Appl Phys A 67, 425–428 (1998). https://doi.org/10.1007/s003390050798

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  • DOI: https://doi.org/10.1007/s003390050798

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