Chin. Phys. Lett.  2001, Vol. 18 Issue (1): 111-113    DOI:
Original Articles |
Effect of the Substrate Orientation on the Transport Properties of La0.67Sr0.33MnO3 Epitaxial Films
PI Li;ZHU Hong;XU Xiao-Jun;ZHANG Yu-Heng
Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
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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.


Keywords: 75.30.Mb      75.70.-i      75.30.Kz     
Published: 01 January 2001
PACS:  75.30.Mb (Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)  
  75.70.-i (Magnetic properties of thin films, surfaces, and interfaces)  
  75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I1/0111
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