Figure 2
From: Heat capacity anomalies of the molecular crystal 1-fluoro-adamantane at low temperatures

Debye-reduced specific heat capacity data, Cp/T3, for the LT phase of 1F-A (black circles) as well as for some adamantane derivatives presenting ordered (empty symbols) and disordered (full symbols) phases: cyano-adamantane (red squares) and 2-adamantanone (blue triangles). Inset: Specific heat capacity data plotted as Cp/T vs. T2 at low temperature (from 2 to 4 K).