Сonductivity of copper chromite samples doped with magnesium synthesized by solid state method was investigated in wide temperature range. Crystal structure of the samples was determined by X-ray diffraction and confirmed by Raman spectroscopy. P-type of conductivity was confirmed by positive sign of Seebeck coefficient. Analysis of temperature dependencies of conductivity showed that observed conductivity is hopping for magnesium content from 0 to 6 %. Estimates of localization length and density of states at Fermi energy were obtained from temperature dependencies of conductivity.
$^1$Department of General Nuclear Physics, Faculty of physics, Lomonosov Moscow State University, chair of Low-Temperatures Physics and Superconductivity.\
$^2$Faculty of Physics, Lomonosov Moscow State University, chair of General Physics and Molecular Electronics.\
$^3$Faculty of Chemistry, Lomonosov Moscow State University
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