Abstract
Carbon nanomaterials in the form of paper sheets have been used as platforms to achievemultifunctionality. Combined with electrochemical deposition, room temperature synthesisof magnetic Ni coatings on individual carbon nanofibers (CNF) and/or carbon nanotubes(CNT) has been realized through solution penetration and ion diffusion. In addition tosignificant electrical conductivity improvement, the magnetic responses of the Ni coatedcarbon nanopaper sheets can be tuned within large ranges in terms of saturationmagnetic field, remnant magnetization and coercivity. After being re-suspended inliquids, the magnetized CNFs/CNTs can be aligned with small external magneticfields.
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