Sluggishness in the phase transformation in solid C70
β Scribed by G Ghosh; S Sengupta; V.S Sastry; C.S Sundar; T.S Radhakrishnan
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 202 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0022-3697
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β¦ Synopsis
State Commun. 105 (1998) 247] we have reported that at low temperatures the ideal hcp c=a Ο³ 1:63 solid C 70 transforms to a monoclinic structure, in a single step. The transition is broadened over a temperature interval of about 100 K, for a cooling rate Ο³0.0033 K/min, indicating the coexistence of two phases in this temperature range. The width of broadening is cooling-rate dependent [G.
π SIMILAR VOLUMES
This paper reviews several recent investigations by the authors' group concerning the structural transitions at low temperatures in the fullerene solids C 60 and C 70 . In the case of C 60 it has been shown that the heat capacity variation with temperature in the ordered phase reflects the contribut
Harmonic lattice dynamics calculations have been performed on the low temperature structure of solid CT,,. The theoretically obtained lattice structure agrees with the experimentally determined low temperature structure and the symmetry is found to be P2,/m. The orientationally ordered equilibrium i