Magnetorefractive effect in granular films with tunneling magnetoresistance |
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| Authors: | I V Bykov E A Gan’shina A B Granovskii V S Gushchin |
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| Institution: | (1) Vernadskii Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 117975, Russia;(2) Lomonosov Moscow State University, Vorob’evy gory, Moscow, 119899, Russia |
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| Abstract: | The magnetorefractive effect, consisting in a change of reflectivity under magnetization, has been observed in granular Co-Al-O metal-insulator magnetic films with tunneling magnetoresistance in the IR region. It is shown that this effect manifests itself most clearly in interference conditions, is even in magnetization, and reaches as high as 0.8% at frequencies of about 1100 cm?, which exceeds both the linear equatorial Kerr and the even orientational magneto-optic effects by an order of magnitude. |
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