The intercalation process of some d-transition metal fluorides in graphite has been investigated using anhydrous liquid HF. C(x)MF(y) GICs have been obtained for M = Cr, Rh, Ir and Au. The charge transfer has been evaluated from optical reflectivity measurements. Comparison has been carried out between electrical conductivity obtained from optical data and from a contactless method. Results on the in-plane electrical resistivity and thermal conductivity are reported. All compounds exhibit a logarithmic resistivity divergence in the low-temperature range due to weak localization and carrier-carrier interaction effects for 2D metals.
Amine, K. ; Tressaud, A. ; Mayorga, SG. ; Grannec, J. ; Hagenmuller, P. ; et. al. Optical and Transport-properties of New Transition-metal Fluoride Graphite-intercalation Compounds (gics). In: Journal of Fluorine Chemistry, Vol. 57, no. 1-3, p. 35-43 (1992)