Specific Heat of a Face-Centered-Cubic Mn—Fe Alloy at Liquid Helium Temperatures

Abstract

An Fe+45 atomic percent Mn alloy, vacuum melted and homogenized at 1050°C for 48 hours, was found to consist at room temperature of a single face-centered-cubic phase, even after an excursion to liquid helium temperatures. Low-temperature specific heats were determined in the range from about 1.7 to 4.8°K. The electronic specific heat coefficient was found to be 14.6×${10}^{-4\mathrm{}}$ cal ${\mathrm{mole}}^{-1\mathrm{}}$ ${\mathrm{deg}}^{-2\mathrm{}}$. The Debye temperature was $\theta =482\mathrm{}°$K.