Abstract
Both in-plane as well as c-axis electrical resistivity of Stage 2 and Stage 5 K-FeCl3 graphite intercalation compounds were measured from room temperature down to 12 K by using a standard four-probe method. The in-plane electrical resistivity exhibited a metallic behaviour. The c-axis resistivity exhibited an activated behaviour and the data were fitted to a model which assumes a variable-range hopping conduction in parallel with band conduction. The Hall effect was measured in a low magnetic field up to 5 kG at temperatures 300, 77 and 12 K. The Hall coefficient was found to be positive, indicating that the conduction takes place by holes. The carrier concentrations were calculated using a one-carrier model.
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