Specific Heat and Superconducting Properties of Zr–Mo Alloys

抄録

The low temperature specific heat of bcc alloys of zirconium base Zr–Mo has been measured in order to investigate their superconducting properties. It was observed that the small addition of molybdenum to zirconium results in a steep rise of the electronic specific heat coefficient, γ, and a decrease of the Debye temperature, θ_D. From the knowledge of γ and θ_D the variation of the superconducting transition temperature, T_c, of zirconium concentration was analyzed with the McMillan theory, and it is suggested that an enhancement of T_c due to the small addition of molybdenum may be ascribed to the sharp rise of the electronic density of states at the Fermi surface.