Results of calorimetric studies of C,,, fullerene are reported. A phase transition at 195 K was found in pristine CT0 samples crystallized from toluene-containiag solutions, the material being identified as a 1: 1 C,,,-toluene adduct. Heating pristine samples over 430 K results in an irreversible de
An infrared spectroscopic study of the orientational phase transitions of C70
β Scribed by Vijay Varma; Ram Seshadri; A. Govindaraj; A.K. Sood; C.N.R. Rao
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 316 KB
- Volume
- 203
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Infrared spectroscopic studies of C,O films show variation in absorbance and linewidth of the bands across the orientational phase transitions around 280 and 340 K. There is some evidence for the coexistence of phases in the 210-270 K region and for the occurrence of another transition below 200 K.
π SIMILAR VOLUMES
## Abstract Although three forms of lithium phosphate are known, a complete structural description of the highest temperature polymorph has not yet been given. In the present work, the phase transitions of lithium phosphate were investigated at high temperatures using Raman microscopy and xβray pow
The gypsum-bassanite-anhydrite phase transition sequence was followed up to 550 K at ambient pressure in a naturally occurring gypsum using Raman spectroscopy. The spectral variations of the internal (CaSO 4 AE 2H 2 O) modes of sulphate tetrahedra and were used to probe the structural phase transiti