The thermal and electrical conductivities of niobium-65% titanium alloys

Abstract

The thermal and electrical conductivities of samples of as-rolled and annealed 35% Nb-65% Ti alloy have been measured between 4 and 20K and between the superconducting critical and 270K respectively. Analysis shows that the thermal conductivity is almost entirely due to phonon carriers, with the magnetic primarily limited by electron-phonon scattering by an unusually small number of electrons. The electrical resistivity data are analyzed to show that s-d interband scattering occurs most frequently. The enhancement of the electrical conductivity due to the existence of short-range superconducting order above the bulk critical temperature is discussed.