“Cooperative effects in CNT-based magnetic nanocomposites” S. Prischepa, F. Le Normand, J. Tejada, A.L Danilyuk, I.V. Komissarov, A.V. Kukharev, J.M. Hernandez, 13th International Workshop on Magnetism and Superconductivity at the Nanoscale, Comaruga, Barcelona, Espagne, 07/2017