| Original Articles |
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Effect of the Substrate Orientation on the Transport Properties
of La0.67Sr0.33MnO3 Epitaxial Films
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| PI Li;ZHU Hong;XU Xiao-Jun;ZHANG Yu-Heng
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| Structure Research Laboratory, University of Science and
Technology of China, Hefei 230026
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| Cite this article: |
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PI Li, ZHU Hong, XU Xiao-Jun et al 2001 Chin. Phys. Lett. 18 111-113 |
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Abstract The transport properties of La0.67Sr0.33MnO3 (LSMO) epitaxial films on differently orientated LaAlO3 substrates have been studied. The as-deposited films with different orientation exhibit different transport behaviours. The resistivity of the films on the (100) and (110) substrates undergoes a metal--insulator transition while the resistivity of the film on the (111) substrate is insulator-like. This is attributed to the discrepancy of oxygen deficiency in the samples which is influenced by the lattice mismatch between the film and the substrate. After being annealed at 700°C in 1-atm flowing pure oxygen for half an hour, all films have the same resistivity behaviour as the bulk LSMO, which may be important for future applications.
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| Keywords:
75.30.Mb
75.70.-i
75.30.Kz
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Published: 01 January 2001
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| PACS: |
75.30.Mb
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(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
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75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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