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Enhanced Granular Magnetoresistance due to Ferromagnetic Layers

J. Balogh·M. Csontos·D. Kaptas·G. Mihaly
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Abstract

Giant magnetoresistance (GMR) of sequentially evaporated Fe-Ag structures have been investigated. Direct experimental evidence is given that inserting ferromagnetic layers into a granular structure significantly enhances the magnetoresistance. The increase of the GMR effect is attributed to spin polarization effects. The large enhancement (up to more than a fourfold value) and the linear variation of the GMR in low magnetic fields are explained by scattering of the spin polarized conduction electrons on paramagnetic grains.

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J. Balogh, M. Csontos, D. Kaptas, G. Mihaly. 2002-02-26. Enhanced Granular Magnetoresistance due to Ferromagnetic Layers. https://doi.org/10.1016/s0038-1098(03)00214-x

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