Paper Title:
Elastic Waves in Nano-Columnar Porous 4H-SiC Measured by Brillouin Scattering
  Abstract

We report measured and calculated frequencies of elastic waves propagating in columnar porous 4H-SiC, an analytically tractable system. The sample was prepared using photo-electrochemical etching followed by mechanical polishing. The frequencies were measured using Brillouin scattering spectroscopy in backscattering geometry. The effective elastic constants, ordinary and extraordinary indices of refraction, and mass density, all obtained using effective medium models, are used to calculate the frequencies. Although the quasistatic limit is not strongly satisfied, the agreement between the measured and calculated values is good.

  Info
Periodical
Materials Science Forum (Volumes 645-648)
Edited by
Anton J. Bauer, Peter Friedrichs, Michael Krieger, Gerhard Pensl, Roland Rupp and Thomas Seyller
Pages
447-450
DOI
10.4028/www.scientific.net/MSF.645-648.447
Citation
R. P. Devaty, M. J. Clouter, Y. Ke, W. J. Choyke, "Elastic Waves in Nano-Columnar Porous 4H-SiC Measured by Brillouin Scattering", Materials Science Forum, Vols. 645-648, pp. 447-450, 2010
Online since
April 2010
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