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THE STRUCTURE AND TRANSPORT PROPERTIES OFLa0.9Sr0.1MnO3

Author

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  • Z. LUO

    (Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China)

  • J. GAO

    (Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China)

Abstract

Thin films ofLa0.9Sr0.1MnO3(LSMO) were grown onSrTiO3substrate by pulsed laser deposition technique at different temperatures and with various oxygen partial pressures. X-ray diffraction spectra confirmed that the grown films are of single phase. The influence of oxygen deficiency on the structure of these grown films has been studied. X-ray diffraction data suggested that higher oxygen content generally results in smaller out-of- plane lattice parameters and annealing in oxygen may further decrease the lattice parameters. The 2-θ value increases with oxygen pressure. Typically, the oxygen-deficient films behave like semiconductors. For films grown at the same temperature, the conductivity is enhanced if the oxygen content is increased. Those films grown in 1 mbar oxygen partial pressure show an upturn at low temperature. Resistivity is dominated by the hopping of adiabatic small polarons at high temperature.

Suggested Citation

  • Z. Luo & J. Gao, 2007. "THE STRUCTURE AND TRANSPORT PROPERTIES OFLa0.9Sr0.1MnO3," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 813-816.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07010299
    DOI: 10.1142/S0218625X07010299
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    Keywords

    Thin film; CMR; La0.9Sr0.1MnO3;
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