Kinetic Properties of Current Carriers in GICs and Low Density Carbon Materials

Abstract

The Hall effect, Shubnikov-de Haas effect (SdH), and electrical conductivity have been studied in the temperature range 0.3–4.2 K in magnetic fields up to 8 T in acceptor type graphite intarcalated compounds (GICs) of low stages and in low density carbon materials (graphite foils), produced by the thermal destruction of GICs. The parameters of the energy spectrum of carriers were determined. For graphite foils (GFs) the negative magnetoresistance and logarithmic dependence of the electrical conductivity on temperature was found at low temperatures. These data testify to weak localization beyond the diffusion limit.

Key Words:

• intecalation compounds of graphite
• graphite foils
• electronic properties
• the energy spectrum
• weak localization