Specific Heat of Chromium-Rich Chromium-Nickel and Chromium-Iron-Molybdenum Alloys between 1.3 and 4.2 °K

The specific heats of some chromium-based alloy systems were measured in the temperature range 1.3-4.2 °K. The alloy systems studied were the binary chromium-nickel with up to 4-at.% nickel and the ternary ${\mathrm{Cr}}_{(0.75\mathrm{}-x)}{\mathrm{Fe}}_x{\mathrm{Mo}}_{0.25}$ with $0\le x<\mathrm{}0.\mathrm{}20$. The electronic-specific-heat coefficient of the chromium-nickel system increases slowly with increasing nickel concentration and shows a maximum near 2-at.% Ni. The coefficients of the cubic temperature term in the specific heat of some of the binary alloys are relatively high. This observation was attributed to the effect of antiferromagnetic spin waves.