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Epitaxial layered cobaltite NaxCoO2 thin films grown on planar and vicinal cut substrates

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Yu,  L.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Wang,  Y.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

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Zhang,  P. X.
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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Habermeier,  H.-U.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Yu, L., Gu, L., Wang, Y., Zhang, P. X., & Habermeier, H.-U. (2011). Epitaxial layered cobaltite NaxCoO2 thin films grown on planar and vicinal cut substrates. Journal of Crystal Growth, 328(1), 34-38.


Cite as: https://hdl.handle.net/21.11116/0000-000E-C033-F
Abstract
Epitaxial layered cobaltite Na(0.5-0.7)CoO(2) thin films have been grown on planar SrTiO(3) (1 0 0), SrTiO(3) (1 1 0), LaAlO(3) (1 0 0) and alpha-Al(2)O(3) (0 0 0 1) substrates successfully by pulse laser deposition. The annealing temperature to influence of the crystal structure, surface morphology and electrical transport properties of Na(x)CoO(2) thin films has been investigated. The layered structure of Na(x)CoO(2) film and the interface between the film and substrate have been observed clearly by high resolution transmission electron microscopy. Vicinal cut SrTiO(3) (1 0 0) substrates with the c-axis tilted angle theta 3-10 degrees have been used to grow Na(x)CoO(2) thin films, which reveals that the c-axis orientation epitaxial growth on vicinal cut SrTiO(3) (1 0 0) substrates only occurred when tilted angle theta <= 5 degrees. (C) 2011 Elsevier B.V. All rights reserved.