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Raman studies on C60 at high pressures and low temperatures

✍ Scribed by Sarah H. Tolbert; A. Paul Alivisatos; Hector E. Lorenzana; Michael B. Kruger; Raymond Jeanloz

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
431 KB
Volume
188
Category
Article
ISSN
0009-2614

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✦ Synopsis

Vibrational Raman studies on Cse up to 18.0 GPa and between 4 and 360 K are presented. No significant changes are observed up to IO GPa; mode-Grthteisen parameters are calculated. The low pressure, temperature-dependent Raman spectrum shows a sharp shift in peak position and width at 240 K. This is near the point were C6c molecules are reported to begin rotating freely. The data can be explained in terms of rotational-vibrattonal coupling. Comparison of high pressure and low temperature data suggests the formation of a rotational glass at high pressures.

πŸ“œ SIMILAR VOLUMES

High-pressure Raman study of fullerite C
High-pressure Raman study of fullerite C60
✍ Seung-Joon Jeon; Dongho Kim; Seong Keun Kim; Il Cheol Jeon πŸ“‚ Article πŸ“… 1992 πŸ› John Wiley and Sons 🌐 English βš– 287 KB

## Abstract High‐pressure Raman spectra of fullerite, a solid form of C~60~, were measured at pressures up to 4 GPa and room temperature. A change of slope (d__v__/d__P__) of the frequency‐pressure plots for the __A__~g~ pentagonal pinch mode and the __A__~g~ breathing mode was observed at 1.3 GPa,