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Magnetic ordering and charge transport in electron–doped La1−yCeyMnO3 (0.1<=y<=0.3) films

Low Temp. Phys. 35, 468 (2009); doi:10.1063/1.3151993

Issue Date: June 2009

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V. G. Prokhorov, G. G. Kaminsky, and V. S. Flis
Institute for Metal Physics, National Academy of Sciences of Ukraine, Kiev 03142, Ukraine

Y. H. Hyun, S. Y. Park, and Y. P. Lee
q-Psi and Department of Physics, Hanyang University, Seoul 133-791, Korea

V. L. Svetchnikov
National Center for HREM, TU Delft 2628AL, The Netherlands
The microstructure and the magnetic and transport properties of as-deposited La1−yCeyMnO3 (0.1<=y<=0.3) films prepared by pulsed laser deposition are investigated in a wide region of temperature and magnetic field. The microstructure analysis reveals that all films have a high c-oriented texture, an orthorhombic crystal lattice, and a negligible quantity of CeO2 inclusions. The observed strip-domain phase with a periodic spacing of about 3c, the crystal lattice of which is the same as for the basic film phase, exhibits magnetic behavior typical for the Griffiths phase. Regions of the double-period modulated phase are found at room temperature in the y=0.1 film, which is interpreted as Mn3+/Mn2+ ordering with a partial ferromagnetic-->antiferromagnetic transition at TN<=80  K. At the same time, the investigation reveals that the magnetic and transport properties of the electron–doped La1−yCeyMnO3 films, driven by cation doping, are similar to those for the hole-doped La/Ca manganites. Therefore, one can conclude that there is no fundamental difference between the mechanisms of spin ordering and charge transport in the hole-doped and electron–doped manganites. ©2009 American Institute of Physics
History: Submitted 27 January 2009
Permalink: http://link.aip.org/link/?LTPHEG/35/468/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.50.Dd
    Nonmetallic ferromagnetic materials
  • 75.30.Kz
    Magnetic phase boundaries
  • 61.66.Fn
    Crystal structure of specific inorganic compounds
  • 61.72.Qq
    Microscopic defects (voids, inclusions, etc.)
  • 75.50.Cc
    Ferromagnetism of nonferrous metals and alloys
  • YEAR: 2009

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ISSN:
1063-777X (print)   1090-6517 (online)
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