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Anisotropy and damping of molecules/cobalt hybrid thin films

Abstract : We have investigated the magnetic properties of evaporated Co thin films covalently functionalized with different organic thin films, namely (1-(2-bisthienyl benzene) and nitro-benzene. The coating is realized thanks to a diazonium-based electro-reduction process. Brillouin light scattering experiments revealed that the magnetic properties are sensitive to the presence of the organic film. For (1-(2-bisthienyl benzene) thin films, the perpendicular magnetic anisotropy is increased as well as the magnetic damping. However for nitrobenzene, only the perpendicular anisotropy is increased albeit less than for (1-(2-bisthienyl benzene). This change in magnetic properties might be attributed to the coupling with the organic molecules.
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Submitted on : Wednesday, June 28, 2017 - 1:12:36 PM
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Olivier Rousseau, Salim Cherif, Yves Roussigne, Mohamed Belmeguenai, Pascal Martin, et al.. Anisotropy and damping of molecules/cobalt hybrid thin films. IEEE Transactions on Magnetics, 2017, pp.1 - 1. ⟨10.1109/TMAG.2017.2694888⟩. ⟨hal-01549026⟩



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