Beyoro, Zeleke2018-07-102023-11-092018-07-102023-11-092010-06http://10.90.10.223:4000/handle/123456789/7615For magnesium diboride (MgB2), some of the superconducting properties that have been studied are summarized. The energy dispersion relation is determined and it is used to determine the electronic thermal conductivity of MgB2. From that energy function, the expression for the electronic heat capacity of magnesium diboride in normal state has been determined. The general expression of the electronic thermal conductivity for MgB2 in normal state is found. Then, by taking the energy gap parameter in to account the electronic thermal conductivity has been computed for the superconducting state of our material; that is below the transition temperature. Then, the electronic thermal conductivity of magnesium diboride has been plotted as a function of temperature with in the superconducting state. Moreover, the electrical conductivity of MgB2 is calculated and the Wiedemann-Franz law is checked for normal state of a material. Finally, the general expression for electronic thermal conductivity of MgB2 is determined in K - Space Key Words: Magnesium diboride, thermal conductivity, superconducting stateenMagnesium DiborideThermal ConductivitySuperconducting StateThesis