Abstract
We report measurements of the specific heat of solid N 2-Argon alloys of 5−, 12−, and 23.5 mol % N 2 molar concentrations, over the temperature range of 4–40 K. The results are an extension of our previous investigations of the N 2-argon quadrupolar glass at higher N 2 concentrations. By subtraction of the lattice term the specific heat contribution due to the rotation of the N 2 molecules may be examined. This contribution is observed in all the samples as a broadened Schotty-like anomally peaking near 15 K, the height of the anomaly being proportional to the N 2 concentration.
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