Optical and magneto-optical studies of (La0.7A0.3)MnO3 (A=Sr, Ca, and Ce) thin films
Journal
Journal of Magnetism and Magnetic Materials
Journal Volume
304
Journal Issue
1
Date Issued
2006
Author(s)
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. © 2006 Elsevier B.V. All rights reserved.
Type
journal article