Raman scattering and x-ray-absorption spectroscopy in gallium nitride under high pressure

Piotr Perlin; Claude Jauberthie-Carillon; Jean Paul Itie; Alfonso San Miguel; Izabella Grzegory; Alain Polian

doi:10.1103/PhysRevB.45.83

Raman scattering and x-ray-absorption spectroscopy in gallium nitride under high pressure

Piotr Perlin, Claude Jauberthie-Carillon, Jean Paul Itie, Alfonso San Miguel, Izabella Grzegory, and Alain Polian

Phys. Rev. B 45, 83 – Published 1 January 1992

Abstract

Gallium nitride was studied by Raman scattering and x-ray-absorption spectroscopy up to 60 GPa. A high-pressure structural phase transition was observed in gallium nitride at 47 GPa by means of Raman scattering and x-ray-absorption spectroscopy. We also report the direct determination of the bulk modulus $B_{0}$ of this compound (245 GPa). Grüneisen parameters of the four observed phonon modes were established. The transition pressure is compared with existing calculations.

Received 7 June 1991

DOI:https://doi.org/10.1103/PhysRevB.45.83

Authors & Affiliations

Piotr Perlin

Physique des Milieux Condensés, Université Pierre et Marie Curie, T 13-E4, 4 place Jussieu, F-75252 Paris CEDEX 05, France
High Pressure Research Center (UNIPRESS), Polish Academy of Sciences (PAN), Sokol/owska 29/37, PL-01-142 Warszawa, Poland

Claude Jauberthie-Carillon, Jean Paul Itie, and Alfonso San Miguel