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Linear and Circularly Polarized Light to Study Anisotropy and Resonant Scattering in Magnetic Thin Films

Helio C. N. Tolentino·Julio C. Cezar·Narcizo M. Souza-Neto·Aline Y. Ramos
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Abstract

The remarkable polarization properties of the synchrotron light have lead to the advent of modern synchrotron-related spectroscopic studies with angular and/or magnetic selectivity. We give here an overview of the prominent aspect of the polarization of the light delivered by a bending magnet, and some dichroic properties in X-ray Absorption Spectroscopy (XAS). We report then two studies developed at the Brazilian Synchrotron Light Laboratory (LNLS), exemplifying the profit gained using linear and circular polarization of the X-ray for the study of magnetic thin films and multilayers. Angle-resolved XAS was used in strained manganite thin films to certify a model of local distortion limited within the $MnO_{6}$ polyhedron. A pioneer experience of X-ray magnetic scattering at grazing incidence associated with dispersive XAS in a $Co/Gd$ multilayer draws new perspectives for magnetic studies in thin films and multilayers in atmospheric conditions in the hard X-ray range.

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Helio C. N. Tolentino, Julio C. Cezar, Narcizo M. Souza-Neto, Aline Y. Ramos. 2004-12-10. Linear and Circularly Polarized Light to Study Anisotropy and Resonant Scattering in Magnetic Thin Films. https://arxiv.org/abs/cond-mat/0412280

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