Surface Morphology, Structure and Transport Property of NaxCoO2 Thin Films Grown by Pulsed Laser Deposition

Abstract:

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In this paper, we report the growth of NaxCoO2 thin films by pulsed-laser deposition (PLD). It is shown that the concentration of sodium is very sensitive to the substrate temperature and the target-substrate distance due to the evaporation of sodium during the deposition. α'-phase Na0.75CoO2 and γ-phase Na0.71CoO2 thin films can be obtained with different conditions. Correspondingly, the surface morphology of the films changes from flake-like to particle-like. The temperature dependence of resistivity for the films prepared with the optimal condition shows metallic behavior, consistent with the data of NaxCoO2 single crystals. This work demonstrates that PLD is a promising technique to get high quality NaxCoO2 thin films.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

3807-3810

DOI:

10.4028/www.scientific.net/MSF.475-479.3807

Citation:

X.P. Zhang et al., "Surface Morphology, Structure and Transport Property of NaxCoO2 Thin Films Grown by Pulsed Laser Deposition", Materials Science Forum, Vols. 475-479, pp. 3807-3810, 2005

Online since:

January 2005

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$35.00

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