Surface Brillouin scattering of opaque solids and thin supported films

J. D. Comins; A. G. Every; P. R. Stoddart; X. Zhang; J. C. Crowhurst; G. R. Hearne

doi:10.1016/S0041-624X(99)00199-7

Surface Brillouin scattering of opaque solids and thin supported films

J. D. Comins, A. G. Every, P. R. Stoddart, X. Zhang, J. C. Crowhurst, G. R. Hearne

University of the Witwatersrand

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Surface Brillouin scattering (SBS) has been used successfully for the study of acoustic excitations in opaque solids and thin supported films, at both ambient and high temperatures. A number of different systems have been investigated recently by SBS including crystalline silicon, amorphous silicon layers produced by ion bombardment and their high temperature recrystallization, vanadium carbides, and a nickel-based superalloy. The most recent development includes the measurement of a supported gold film at high pressure. The extraction of the elastic constants is successfully accomplished by a combination of the angular dependence of surface wave velocities and the longitudinal wave threshold within the Lamb shoulder. The application of surface Green's function methods successfully reproduces the experimental SBS spectra. The discrepancies often observed between surface wave velocities and by ultrasonics measurements have been investigated and a detailed correction procedure for the SBS measurements has been developed.

Original language	English
Pages (from-to)	450-458
Number of pages	9
Journal	Ultrasonics
Volume	38
Issue number	1
DOIs	https://doi.org/10.1016/S0041-624X(99)00199-7
Publication status	Published - Mar 2000
Externally published	Yes

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/S0041-624X(99)00199-7

Cite this

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title = "Surface Brillouin scattering of opaque solids and thin supported films",

abstract = "Surface Brillouin scattering (SBS) has been used successfully for the study of acoustic excitations in opaque solids and thin supported films, at both ambient and high temperatures. A number of different systems have been investigated recently by SBS including crystalline silicon, amorphous silicon layers produced by ion bombardment and their high temperature recrystallization, vanadium carbides, and a nickel-based superalloy. The most recent development includes the measurement of a supported gold film at high pressure. The extraction of the elastic constants is successfully accomplished by a combination of the angular dependence of surface wave velocities and the longitudinal wave threshold within the Lamb shoulder. The application of surface Green's function methods successfully reproduces the experimental SBS spectra. The discrepancies often observed between surface wave velocities and by ultrasonics measurements have been investigated and a detailed correction procedure for the SBS measurements has been developed.",

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T1 - Surface Brillouin scattering of opaque solids and thin supported films

AU - Comins, J. D.

AU - Every, A. G.

AU - Stoddart, P. R.

AU - Zhang, X.

AU - Crowhurst, J. C.

AU - Hearne, G. R.

PY - 2000/3

Y1 - 2000/3

N2 - Surface Brillouin scattering (SBS) has been used successfully for the study of acoustic excitations in opaque solids and thin supported films, at both ambient and high temperatures. A number of different systems have been investigated recently by SBS including crystalline silicon, amorphous silicon layers produced by ion bombardment and their high temperature recrystallization, vanadium carbides, and a nickel-based superalloy. The most recent development includes the measurement of a supported gold film at high pressure. The extraction of the elastic constants is successfully accomplished by a combination of the angular dependence of surface wave velocities and the longitudinal wave threshold within the Lamb shoulder. The application of surface Green's function methods successfully reproduces the experimental SBS spectra. The discrepancies often observed between surface wave velocities and by ultrasonics measurements have been investigated and a detailed correction procedure for the SBS measurements has been developed.

AB - Surface Brillouin scattering (SBS) has been used successfully for the study of acoustic excitations in opaque solids and thin supported films, at both ambient and high temperatures. A number of different systems have been investigated recently by SBS including crystalline silicon, amorphous silicon layers produced by ion bombardment and their high temperature recrystallization, vanadium carbides, and a nickel-based superalloy. The most recent development includes the measurement of a supported gold film at high pressure. The extraction of the elastic constants is successfully accomplished by a combination of the angular dependence of surface wave velocities and the longitudinal wave threshold within the Lamb shoulder. The application of surface Green's function methods successfully reproduces the experimental SBS spectra. The discrepancies often observed between surface wave velocities and by ultrasonics measurements have been investigated and a detailed correction procedure for the SBS measurements has been developed.

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Surface Brillouin scattering of opaque solids and thin supported films

Abstract

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