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Acoustic Properties of Ho2Si2O7 Single Crystal Investigated by Brillouin Light Scattering

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Abstract:

Micro-Brillouin light scattering experiments were performed on flux grown D-type (monoclinic, P21/c) Ho2Si2O7 single crystal from room temperature to 850 K. Both the hypersonic velocity (VLA) and related elastic constant (c33) of the longitudinal acoustic phonons propagating along 001-direction showed a small dispersion at T565 K whereas the same could not be observed clearly in attenuation/damping. The overall temperature dependent behavior of elastic constant and hypersonic velocity was attributed to the lattice anharmonicity of the crystal in the investigated temperature range.

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Advanced Materials XII View Preview

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Periodical:

Key Engineering Materials (Volumes 510-511)

Pages:

143-147

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.510-511.143

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Online since:

May 2012

Authors:

Ghulam Shabbir, Asghari Maqsood, Izhar-ul-Haq Izhar-ul-Haq

Keywords:

Crystal Growth, Elastic Property, Spectroscopy

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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