The elastic constants of silicon carbide: A Brillouin-scattering study of 4H and 6H SiC single crystals
- Materials Science and Intense Pulsed Neutron Source Divisions, Argonne National Laboratory, Argonne, Illinois 60439-4814 (United States)
- Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-04 (Japan)
- Department of Nuclear Engineering, Kyoto University, Kyoto 606-01 (Japan)
The complete sets of elastic constants of 4H and 6H silicon carbide single crystals were determined by Brillouin scattering. The elastic constants of 6H SiC are C{sub 11}=501{plus_minus}4, C{sub 33}=553{plus_minus}4, C{sub 44}=163{plus_minus}4, C{sub 12}=111{plus_minus}5, and C{sub 13}=52{plus_minus}9GPa; the corresponding ones of 4H SiC are the same within experimental uncertainties. The compressibility, 4.5{times}10{sup {minus}3}GPa, is about 3{endash}5 times smaller than those reported for polycrystalline SiC materials. {copyright} {ital 1997 American Institute of Physics.}
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 664479
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 82; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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