Kinetic properties of current carriers in GICs and low density carbon materials

The Hall effect, Shubnikov-de Haas effect (SdH), and electrical conductivit y have been studied in the temperature range 0.3-4.2 K in magnetic fields u p to 8 T in acceptor type graphite intercalated compounds (GICs) of low sta ges and in low density carbon materials (graphite foils), produced by the t hermal destruction of GICs. The parameters of the energy spectrum of carrie rs were determined. For graphite foils (GFs) the negative magnetoresistance and logarithmic dependence of the electrical conductivity on temperature w as found at low temperatures. These data testify to weak localization beyon d the diffusion limit.