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Preparation of Epitaxial and Polycrystalline La0.8Sr0.2MnO3 Films by Dipping-Pyrolysis Process

Published online by Cambridge University Press:  15 February 2011

T. Manabe
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
T. Fujimoto
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
K-S. Hwang
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
I. Yamaguchhi
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
W. Kondo
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
I. Kojima
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
S. Mizuta
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
T. Kumagai
Affiliation:
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, JAPAN
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Abstract

The films of La0.8Sr0.2MnO3 (LSMO) were prepared on single-crystal SrTiO3(100) and polycrystalline yttria-stabilized zirconia (YSZ) substrates by dipping-pyrolysis process using metal naphthenates as starting materials. The crystallinity, grain alignment, morphology and electric properties of the films were compared. Epitaxial films were found to grow on SrTiO3, heat-treated at 1200°C, by x-ray diffraction, and to exhibit very smooth surfaces by SEM and AFM observations. On the other hand, the surfaces of the polycrystalline films grown on YSZ consisted of round-shaped LSMO grains. The resistivity of the epitaxial films was about two orders of magnitude lower than that of the polycrystalline films prepared under the same conditions. Preparation of epitaxial LSMO films on SrTiO3(110) is also presented.

Type
Research Article
Copyright
Copyright © Materials Research Society 1997

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References

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