Porosity Dependence of the Velocity of Surface and Bulk Acoustic Waves in Porous Silicon Carbide Films
2007 ◽
Vol 556-557
◽
pp. 745-748
◽
Keyword(s):
Brillouin light scattering spectroscopy was used to probe porous silicon carbide films formed from p-type 6H crystalline silicon carbide. The porosities of the films ranged from 30% to 58%. Surface and bulk acoustic wave velocities were measured and compared with those calculated from the Mori-Tanaka acoustic effective medium model. Qualitative agreement is obtained between the experimentally determined velocities and those predicted by Mori-Tanaka acoustic effective medium models with spherical pores and, in the case of surface acoustic waves, also with prolate spheroidal pores with shape factor equal to 0.2. The model demonstrates the importance of morphology in determining the behavior of acoustic waves in a porous material.
2006 ◽
Vol 527-529
◽
pp. 751-754
◽
2007 ◽
pp. 745-748
Keyword(s):
Keyword(s):
2010 ◽
Vol 256
(18)
◽
pp. 5629-5639
◽
Keyword(s):
2006 ◽
Vol 26
(9)
◽
pp. 1715-1724
◽
Keyword(s):
2005 ◽
Vol 202
(8)
◽
pp. 1548-1551
◽
Keyword(s):
1999 ◽
Vol 142
(1-4)
◽
pp. 569-573
◽