THE C-AXIS RESISTIVITY FOR 2 HOPG-BASED, FIRST STAGE CUAL2CL8 AND 2NDSTAGE CUCL2-GRAPHITE INTERCALATION COMPOUNDS AS A FUNCTION OF BOTH PRESSURE AND TEMPERATURE

In this paper we present data for the c-axis resistivity of first stag e CuAl2Cl8 GIC and second stage CuCl2 GIC as functions of pressure, p, (0.0 < p < 1.5 GPa) and of temperature, T, (4 < T < 300 K). We show e vidence of a possible new high-pressure phase above 1.0 GPa for the Cu Al2Cl8 GIC and we show that the CuCl2 GIC is very stable at all pressu res and temperature investigated. We make a comparison with previous r esults on SbCl5 GICs and other chloride intercalation compounds and wi th theories treating the temperature and pressure coefficients of tran sport parameters in layered solids.