Magnetic Susceptibility and Electronic Specific Heat of Transition Metals and Alloys. VIII. Hf, Ta, W and Re Metals and Their Alloys

抄録

The temperature variations of electronic specific heats and spin paramagnetic susceptibilities without molecular field are calculated for Hf, Ta, W and Re metals and their alloys by making use of the density of states determined from low temperature specific heat data for 5d-group transition metals and their alloys. Calculated results qualitatively explain the temperature variations of the estimated electronic specific heats for these metals. By comparing the calculated results of spin paramagnetic susceptibilities with the experimental data on magnetic susceptibilities, the values of molecular field coefficient, α, and additional constant paramagnetic susceptibility, χ_c, are estimated for these metals and alloys, and the composition dependence of χ_c is shown. A brief discussion on the NMR shift for Ta and W metals is given.