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  • 1 Faculty of Science Physics Department Sohag Egypt
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The electrical resistivity, π, and Seebeck coefficient,S, of the system Sb2Se3 were measured in the ambient temperature range 323≤T≤573 K. Both parameters were found to be affected considerably by the temperature of annealing,Ta, in the range 493≤Ta≤653 K and by the time of annealing,ta, for periods extending to 16h. Additionally, both depended strongly on the ambient temperature. The activation energy of ordering of the present system could be calculated by using the effects of isothermal annealing on the considered physical parameters.