Nanocarbon materials such as C60 show fascinating transport properties when in contact with a ferromagnet. Previous results indicate that this could be due to a spin polarized electron transfer giving rise to an induced magnetization in carbon. The effect has wide potential for molecular electronics (separating the current leads from the spin injectors), quantum physics (coherence of Cooper pairs), and biomedicine -e.g. hyperthermia and drug delivery. Polarised neutron reflectivity is the only technique that can give us a profile of the induced magnetization in carbon and that of the magnetic film. Measuring multilayers with different structures we will determine the diffusion length of the polarisation in the fullerene. Using a compensated alloy and measuring over a range of temperatures, we will determine the correlation between spin polarisation and induced magnetisation.