Diffusion of lithium cations in C60 single crystals driven by an electric field was studied. It was found that the stoichiometry of C60 single crystals could be changed with respect to lithium by injection of Li+ ions through the heterojunction Li7SiPO8|C60 and electrons through the heterojunction C60|Graphite. The double charge injection changed the stoichiometry of lithium in a C60 single crystal and increased both the lithium ionic and electronic conductivity. The electronic conductivity in LixC60 crystals was non-metallic in nature. The temperature dependence of the electronic conductivity lithium doped C60 single crystals was investigated. It was found that electrons occupied the lowest singlet exited states and that this leads to the appearance of an intensive EPR signal. The temperature dependence of the concentration of paramagnetic centers was investigated.

Pecularity of Lithium Electrodiffusion into Fulleride Single Crystals. Bredikhin, S., Kveder, V., Shalynin, A., Nikolaev, R., Ossipyan, Y.: Ionics, 2000, 6[3-4], 187-95