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APS » Journals » Phys. Rev. B » Volume 47 » Issue 5
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Phys. Rev. B 47, 2874–2877 (1993)

Raman-scattering studies of aluminum nitride at high pressure

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Piotr Perlin
Physique des Milieux Condensés, Tour 13 E 4-B 77, Université Pierre et Marie Curie, 4 Place Jussieu, F-75252 Paris CEDEX 05, France
High Pressure Research Center (UNIPRESS), Polish Academy of Sciences, Sokol/owska 29/37, PL-01-142 Warszawa, Poland

Alain Polian
Physique des Milieux Condensés, Tour 13 E 4-B 77, Université Pierre et Marie Curie, 4 Place Jussieu, F-75252 Paris, CEDEX 05, France

Tadeusz Suski
High Pressure Research Center (UNIPRESS), Polish Academy of Sciences, Sokol/owska 29/37, PL-01-142 Warszawa, Poland

Received 17 September 1992; published in the issue dated 1 February 1993

Single crystals of aluminum nitride were studied by Raman scattering under hydrostatic pressure up to 13 GPa. Four of the six allowed modes were observed and identified. Our results under ambient conditions do not agree with already published data. The A1(TO), E2(2), and E1(LO) have been followed as a function of pressure and have mode-Grüneisen coefficients of 1.58, 1.26, and 0.38, respectively. These data are compared with recent data obtained on single crystals of gallium nitride.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.47.2874
DOI:
10.1103/PhysRevB.47.2874
PACS:
62.50.+p, 78.30.Fs, 64.70.Kb
 
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