Influence of thermal treatment on thermal properties of adamantane derivatives

• Veröffentlicht in: Физика низких температур
• Datum: 2015
• ISSN: 0132-6414
• Hauptverfasser: Szewczyk, D., Jeżowski, A., Krivchikov, A.I., Tamarit, J.Li.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2015
• Schlagworte: 10th International Conference on Cryocrystals and Quantum Crystals
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/127935
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Influence of thermal treatment on thermal properties of adamantane derivatives / D. Szewczyk, A. Jeżowski, A.I. Krivchikov, J.Ll. Tamarit // Физика низких температур. — 2015. — Т. 41, № 6. — С. 598-602. — Бібліогр.: 19 назв. — англ.

Heat transport mechanisms present in 2-adamantanone and 1-cyanoadamantane crystals were investigated
 in a broad temperature range. To characterize scattering processes, thermal conductivity and heat capacity measurements
 were carried out. A particular care was paid to the cooling rate of specimen which influenced the thermal
 history of the samples. The experimental results led to a conclusion that under slow cooling the thermal conductivity
 reaches the highest values and resembles the behavior of ordered molecular crystals. As for fast
 cooling, the “quenching” resulted in changes in both the structure and the temperature dependence of the thermal
 conductivity, the latter resembling that of amorphous solids. In heat capacity measurements the thermal history
 made on samples did not reflect the preliminary findings known from thermal conductivity results, which could
 imply that the observed mechanisms are more complex.