Kotsuba A. Electro-physical characteristics of graphite materials and intercalated compounds on its basis in a wide temperature range

In the thesis have the regularity of electro- and magnetoresistance alteration while changing the structure characteristics of graphite materials (GM), output graphite structure affect and the conditions of synthesis on the mechanism of electroconductivity in GIC with SbCl5 , ICl, properties of phase transformations in the layers of intercalate been researched. The methods of the investigation are: the resistometry, X-ray analysis and electron microscopy. It is shown that electro- and magnetoresistance of graphite materials on all the stages of forming of structure from amorphous to monocrystal can be explained in the frames of three-dimensional model of electronic structure. The influence of the structure of pristine graphite and the synthesis temperature on the value and character of temperature dependence of electric resistivity of GICs had been experimentally found. First discovered a shift of temperature of phase transformation in the intercalate layers while changing the parameters of crystalstructure of initial graphite materials and the synthesis conditions GIC, which is explained by the change of distance between layers in comparison with distance between layers in monocrystal graphite. It is shown that electronic cunductivity of the GIC with SbCl5 , ICl on the basis of the non-structured graphite can be described in the frames of two-dimensional model of electronic structure with consideration of the quantum affects of the weak localization and the electron-electron interaction