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Brillouin scattering study of gallium nitride: elastic stiffness constants

M Yamaguchi-+, T Yagi++, T Azuhata§, T Sota§, K Suzuki§, S Chichibu|| and S Nakamura

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High-resolution Brillouin scattering measurements on a high-quality wurtzite gallium nitride (GaN) single crystal were carried out and elastic stiffness constants were determined.

A comparison is given with the results of a recently reported model for calculation of the elastic constants of III - V semiconductors based on the modified version of Keyes's relations. A good agreement is found between the experimental and theoretical elastic constants for GaN.


PACS

78.35.+c Brillouin and Rayleigh scattering; other light scattering

62.20.D- Elasticity

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 1 (6 January 1997)

Received 15 May 1996, in final form 13 September 1996



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