Abstract
Organic semiconductor/ferromagnetic bilayer thin films can exhibit novel properties due to the formation of spinterface at the interface. Buckminsterfullerene (C60) has been shown to exhibit ferromagnetism at the interface when it is placed next to a ferromagnet (FM) such as Fe or Co. Formation of a spinterface occurs due to the orbital hybridization and spin-polarized charge transfer at the interface. In this work, we have demonstrated that one can enhance the magnetic anisotropy of the low Gilbert damping alloy CoFeB thin film by introducing a C60 layer. We have shown that anisotropy increases by increasing the thickness of C60, which might be a result of the formation of a spinterface. However, the magnetic domain structure remains the same in the bilayer samples as compared to that in the reference CoFeB film.
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