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Brillouin scattering of cluster-assembled carbon films

Bottani, CE and Ferrari, AC and Li Bassi, A and Milani, P and Ferretti, M and Piseri, P (1998) Brillouin scattering of cluster-assembled carbon films. Carbon, 36. pp. 535-538. ISSN 0008-6223

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Abstract

The low frequency vibrational spectrum of cluster beam deposited carbon films was studied by Brillouin light scattering. In thin films the values of both bulk modulus and shear modulus has been estimated from the shifts of surface phonon peaks. The values found indicate a mainly sp2 coordinated random network with low density. In thick films a bulk longitudinal phonon peak was detected in a spectral range compatible with the value of the index of refraction and of the elastic constants of thin films. High surface roughness, combined with a rather strong bulk central peak, prevented the observation of surface phonon features. © 1998 Elsevier Science Ltd. All rights reserved.

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Date Deposited: 16 Jul 2015 13:09
Last Modified: 03 Aug 2015 06:59
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