Very-low temperature specific heat of Torlon

Year: 2006

Authors: Barucci M., Di Renzone S., Olivieri E., Risegari L., Ventura G.

Autors Affiliation: INFN, Section of Florence, Florence, Italy; Department of Physics, University of Florence, Via G. Sansone n.1, 50019 Sesto Fiorentino, Florence, Italy; Department of Mechanics, University of Florence, Florence, Italy

Abstract: 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+d + P2T3, with P1 = (5.41 ± 0.08)·10-6J K-(2+d) g-1, P2 = (2.82 ± 0.03) ·10-5JK-4g-1 and d = 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 · TO with P = (2.68 ± 0.07)·10-5JKO+1g-1 and O = 3.32 ± 0.02.

Journal/Review: CRYOGENICS (GUILDF.)

Volume: 46 (11)      Pages from: 767  to: 770

KeyWords: Specific heat; Polymers; Calorimetry; Thermal-conductivity; Valve
DOI: 10.1016/j.cryogenics.2006.05.006