Marques, RFCAbernethy, P. R.Matthew, JADPaiva-Santosa, C. O.Perazolli, L.Jafelicci, M.Thompson, S. M.2014-05-202014-05-202004-05-01Journal of Magnetism and Magnetic Materials. Amsterdam: Elsevier B.V., v. 272, p. 1740-1741, 2004.0304-8853http://hdl.handle.net/11449/37582The magnetorefractive effect (MRE) has been used for the first time to study the magnetotransport properties of La1-xSrxMnO3 perovskite materials. A direct correlation between the MRE and colossal magnetoresistance was observed. Samples with x = 0-0.3 prepared using the homogeneous coprecipitation and the solid state reaction methods were studied, covering the range of insulating to metallic behaviour. The M RE probed both the magnetically induced modification of the scattering of Drude-like electrons and the magnetic dependence of a stretching vibration mode. (C) 2004 Elsevier B.V. All rights reserved.1740-1741engCMRmagnetorefractive effectinfrared reflection spectroscopyperovskitelanthanum strontium-doped manganiteArtigo10.1016/j.jmmm.2003.12.737WOS:000222236800044Acesso restrito2115942621694174