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Proceedings Paper

Elastic properties of cBN films by surface Brillouin scattering
Author(s): Pavel Zinin; Murli H. Manghnani; Xinya Zhang; Horst Feldermann; Carsten Ronning; Hans Hofsaess
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Paper Abstract

Surface Brillouin scattering (SBS) has been used to determine the elastic properties of thin hard submicron films cBN deposited on silicon. In case of cBN films, only the Rayleigh mode can be clearly identified in the Brillouin spectra. The elastic properties of the films have been determined by fitting experimental data to theoretical dispersion curves. A Green's function method was used to predict Brillouin scattering spectra of the acoustic excitation at the free surface. Our results demonstrate that the effect of thin hBN interlayer located between cBN film and Si substrate on the velocity of surface acoustic wave (SAW) does not exceed 2% for thin (16 nm film) and is negligible for cBN films thicker than 100 nm. The elastic properties of the cBN films are not softer than those of bulk cBN.

Paper Details

Date Published: 11 June 2002
PDF: 8 pages
Proc. SPIE 4702, Smart Nondestructive Evaluation for Health Monitoring of Structural and Biological Systems, (11 June 2002); doi: 10.1117/12.469899
Show Author Affiliations
Pavel Zinin, Univ. of Hawaii (United States)
Murli H. Manghnani, Univ. of Hawaii (United States)
Xinya Zhang, Univ. of Hawaii (United States)
Horst Feldermann, Univ.of Goettingen (Germany)
Carsten Ronning, Univ.of Goettingen (Germany)
Hans Hofsaess, Univ.of Goettingen (Germany)


Published in SPIE Proceedings Vol. 4702:
Smart Nondestructive Evaluation for Health Monitoring of Structural and Biological Systems
Tribikram Kundu, Editor(s)

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