Very-low temperature specific heat of Torlon Original Research Article

The specific heat of Torlon has been measured in the 0.15–4.2 K temperature range. Data below 1 K can be represented by c(T) = P1T1+δ + P2T3, with P1 = (5.41 ± 0.08)·10−6J K−(2+δ) g−1, P2 = (2.82 ± 0.03) ·10−5JK−4g−1 and δ = 0.28 ± 0.01, as predicted by the tunnelling theory. Above 1 K, the behaviour of c(T) is similar to that of other amorphous materials and can be expressed as: c(T) = P · TΩ with P = (2.68 ± 0.07)·10−5JKΩ+1g−1 and Ω = 3.32 ± 0.02.