Optical and magneto-optical studies of (La0.7A0.3)MnO3 (A=Sr, Ca, and Ce) thin films

H. L. Liu, Kenneth Y.J. Zhang, L. C. Wu, L. Uba, S. Uba, W. J. Chang, J. Y. Lin, L. M. Wang

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Abstract

The optical and magneto-optical (MO) properties of (La0.7A0.3)MnO3 (A=Sr, Ca, and Ce) thin films have been investigated. It is found that the value shape of spectra is strongly dependent on different cation dopings. The Sr-doped thin film exhibits a strong Drude response and maximum Kerr rotation angle of 0.32° at ∼3.4 eV. Interestingly, the replacement of Sr ions with the smaller Ca ions and the tetravalent Ce ions all lead to a remarkable suppression of the carrier density and the MO response. Such differences are interpreted as due to their different electronic band structures.

Original languageEnglish
Pages (from-to)e303-e305
JournalJournal of Magnetism and Magnetic Materials
Volume304
Issue number1
DOIs
Publication statusPublished - 2006 Sep 1

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Keywords

  • Colossal magneto-resistance
  • Magneto-optical effect
  • Optical property

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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