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, Jiunn-Yuan Lin, L. M. Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

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
JournalJournal of Magnetism and Magnetic Materials
Volume304
Issue number1
DOIs
StatePublished - 1 Sep 2006

Keywords

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

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