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Brillouin scattering from $C_{70}$ and $C_{60}$ films: a comparative study of elastic properties

Murugavel, P and Narayana, Chandrabhas and Govindaraj, A and Sood, Ajay K and Rao, CNR (2000) Brillouin scattering from $C_{70}$ and $C_{60}$ films: a comparative study of elastic properties. In: Chemical Physics Letters, 331 (2-4). pp. 149-153.

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Brillouin scattering measurements carried out on a thin Ælm of $C_{70}$ deposited on a Si(1 0 0) substrate show modes at 4.8 and 25 GHz due to the surface Rayleigh wave and the bulk longitudinal acoustic mode, respectively, the corresponding modes for $C_{60}$ being found at 4.3 and 30 GHz. Based on the Brillouin data, the values of the bulk, shear and Young's moduli of $C_{70}$ are found to be 11.3, 3.2 and 8.7 GPa, respectively (the corresponding values for $C_{60}$ are 14.9, 4.7 and 12.7 GPa). Poisson's ratios for $C_{70}$ and $C_{60}$ are comparable, the values being 0.37 and 0.36, respectively.

Item Type: Journal Article
Publication: Chemical Physics Letters
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 08 Dec 2008 12:49
Last Modified: 19 Sep 2010 04:53
URI: http://eprints.iisc.ac.in/id/eprint/16623

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