High-pressure Brillouin scattering of amorphous BeH 2

Muhtar Ahart, Jeffery Yarger, Kristina M. Lantzky, Satoshi Nakano, Ho Kwang Mao, Russell J. Hemley

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

High-pressure micro-Brillouin scattering is employed to investigate the pressure dependence of the sound velocity, refractive index, equation of state, and mechanical properties of amorphous BeH 2. The refractive index n has been determined by using two scattering geometries (70° and 180°). The equation of state is deduced from the pressure dependences of the sound velocity. The bulk modulus is 14.2 (±3.0) GPa and its pressure derivative is 5.3 (±0.5). The polarizability is calculated from the refractive index and the density of the material. It increases with pressure while Poisson's ratio decreases with pressure.

Original languageEnglish (US)
Article number014502
JournalJournal of Chemical Physics
Volume124
Issue number1
DOIs
StatePublished - 2006

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Brillouin scattering
refractivity
acoustic velocity
pressure dependence
equations of state
scattering
Refractive index
Acoustic wave velocity
Poisson ratio
bulk modulus
Equations of state
mechanical properties
geometry
Elastic moduli
Scattering
Derivatives
Mechanical properties
Geometry

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Ahart, M., Yarger, J., Lantzky, K. M., Nakano, S., Mao, H. K., & Hemley, R. J. (2006). High-pressure Brillouin scattering of amorphous BeH 2 Journal of Chemical Physics, 124(1), [014502]. https://doi.org/10.1063/1.2138692

High-pressure Brillouin scattering of amorphous BeH 2 . / Ahart, Muhtar; Yarger, Jeffery; Lantzky, Kristina M.; Nakano, Satoshi; Mao, Ho Kwang; Hemley, Russell J.

In: Journal of Chemical Physics, Vol. 124, No. 1, 014502, 2006.

Research output: Contribution to journalArticle

Ahart, M, Yarger, J, Lantzky, KM, Nakano, S, Mao, HK & Hemley, RJ 2006, 'High-pressure Brillouin scattering of amorphous BeH 2 ', Journal of Chemical Physics, vol. 124, no. 1, 014502. https://doi.org/10.1063/1.2138692
Ahart, Muhtar ; Yarger, Jeffery ; Lantzky, Kristina M. ; Nakano, Satoshi ; Mao, Ho Kwang ; Hemley, Russell J. / High-pressure Brillouin scattering of amorphous BeH 2 In: Journal of Chemical Physics. 2006 ; Vol. 124, No. 1.
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