Second-order magneto-optic effects in anisotropic thin films
Identifieur interne : 000C14 ( Main/Exploration ); précédent : 000C13; suivant : 000C15Second-order magneto-optic effects in anisotropic thin films
Auteurs : R. M Osgood Iii [États-Unis] ; S. D Bader [États-Unis] ; B. M Clemens [États-Unis] ; R. L White [États-Unis] ; H. Matsuyama [Japon]Source :
- Journal of Magnetism and Magnetic Materials [ 0304-8853 ] ; 1997.
Abstract
For films with in-plane anisotropy, second-order magneto-optic effects proportional to the square of the spin–orbit interaction can manifest themselves. We report typical measurements of the second-order magneto-optic Kerr effect in Fe, Co, and NiFe thin films with in-plane anisotropy and compare to theoretical predictions based on an interband transition model. We conclude that intraband transitions must play a role at 1.96eV. The second-order magneto-optic effects provide interesting insights into the magnetization reversal process, and also describe the dielectric tensor of a ferromagnetic metal. Furthermore, since the second-order magneto-optic effect is connected with the asymmetry of the magneto-optic hysteresis loop, which arises as a result of the coherent rotation of the magnetization vector, we interpret such asymmetries, which have been previously reported in the literature.
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DOI: 10.1016/S0304-8853(97)01045-7
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We report typical measurements of the second-order magneto-optic Kerr effect in Fe, Co, and NiFe thin films with in-plane anisotropy and compare to theoretical predictions based on an interband transition model. We conclude that intraband transitions must play a role at 1.96eV. The second-order magneto-optic effects provide interesting insights into the magnetization reversal process, and also describe the dielectric tensor of a ferromagnetic metal. 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