Heat capacity and orientational phase transition of solid C60 prepared with different solvents
✍ Scribed by Tooru Atake; Toshiaki Tanaka; Hitoshi Kawaji; Koichi Kikuchi; Kazuya Saito; Shinzo Suzuki; Yohji Achiba; Isao Ikemoto
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 267 KB
- Volume
- 196
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The heat capacity of solid C60 prepared with different solvents, benzene and toluene, has been measured by adiabatic calorimetry between 10 and 300 K, paying attention to the effects of the solvent remaining in the sample. The heat capacity anomaly caused by the orientational phase transition is strongly influenced by the solvent, which is not removed from the sample under vacuum even at elevated temperatures. The thermodynamic quantities related to the phase transition and the enthalpy of formation of the orientational defect are estimated.