Determination of acoustic velocities in xenon and methane hydrates by Brillouin Spectroscopy

1982 ◽  
Vol 9 (6) ◽  
pp. 645-648 ◽  
Author(s):  
B. L. Whiffen ◽  
H. Kiefte ◽  
M. J. Clouter
Keyword(s):  
Methane Hydrates ◽  
Brillouin Spectroscopy ◽  
Acoustic Velocities

Determination of the whole set of elastic constants of a polymeric Langmuir-Blodgett film by Brillouin spectroscopy

1989 ◽  
Vol 40 (5) ◽  
pp. 3323-3328 ◽  
Author(s):  
Fabrizio Nizzoli ◽  
Burkard Hillebrands ◽  
Sukmock Lee ◽  
George I. Stegeman ◽  
Gisela Duda ◽  
...  
Keyword(s):  
Elastic Constants ◽  
Brillouin Spectroscopy ◽  
Blodgett Film ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Film

Determination of the elastic constants of a polymeric Langmuir-Blodgett film by Brillouin spectroscopy

1990 ◽  
Vol 5 (2) ◽  
pp. 173-176 ◽  
Author(s):  
F Nizzoli ◽  
B Hillebrands ◽  
S Lee ◽  
G.I Stegeman ◽  
G Duda ◽  
...  
Keyword(s):  
Elastic Constants ◽  
Brillouin Spectroscopy ◽  
Blodgett Film ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Film

Hypersonic dispersion in tetragonal BaTiO3measured by double-axis Brillouin spectroscopy and determination of dielectric constant

1981 ◽  
Vol 23 (4) ◽  
pp. 1664-1669 ◽  
Author(s):  
Yasunori Tominaga ◽  
Masayuki Udagawa ◽  
Sukekatsu Ushioda ◽  
Terutaro Nakamura ◽  
Hisako Urabe
Keyword(s):  
Dielectric Constant ◽  
Brillouin Spectroscopy

Brillouin Spectroscopy as a Suitable Technique for the Determination of the Eutectic Composition in Mixtures of Choline Chloride and Water

2020 ◽  
Vol 124 (19) ◽  
pp. 4002-4009 ◽  
Author(s):  
Huan Zhang ◽  
M. Luisa Ferrer ◽  
María J. Roldán-Ruiz ◽  
Rafael J. Jiménez-Riobóo ◽  
María C. Gutiérrez ◽  
...  
Keyword(s):  
Eutectic Composition ◽  
Choline Chloride ◽  
Brillouin Spectroscopy ◽  
Suitable Technique

Raman spectroscopic determination of hydration number of methane hydrates

AIChE Journal ◽  
1999 ◽  
Vol 45 (12) ◽  
pp. 2641-2645 ◽  
Author(s):  
Tsutomu Uchida ◽  
Takashi Hirano ◽  
Takao Ebinuma ◽  
Hideo Narita ◽  
Kazutoshi Gohara ◽  
...  
Keyword(s):  
Hydration Number ◽  
Spectroscopic Determination ◽  
Methane Hydrates ◽  
Raman Spectroscopic

scholarly journals High Pressure Brillouin Spectroscopy and X-ray Diffraction of Cerium Dioxide

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3683
Author(s):  
Mungo Frost ◽  
John D. Lazarz ◽  
Abraham L. Levitan ◽  
Vitali B. Prakapenka ◽  
Peihao Sun ◽  
...  
Keyword(s):  
High Pressure ◽  
Bulk Modulus ◽  
Cerium Dioxide ◽  
Room Temperature ◽  
Nanocrystalline Powders ◽  
X Ray Diffraction ◽  
Brillouin Spectroscopy ◽  
X Ray ◽  
Nanocrystalline Cerium Dioxide ◽  
Acoustic Velocities

Simultaneous high-pressure Brillouin spectroscopy and powder X-ray diffraction of cerium dioxide powders are presented at room temperature to a pressure of 45 GPa. Micro- and nanocrystalline powders are studied and the density, acoustic velocities and elastic moduli determined. In contrast to recent reports of anomalous compressibility and strength in nanocrystalline cerium dioxide, the acoustic velocities are found to be insensitive to grain size and enhanced strength is not observed in nanocrystalline CeO2. Discrepancies in the bulk moduli derived from Brillouin and powder X-ray diffraction studies suggest that the properties of CeO2 are sensitive to the hydrostaticity of its environment. Our Brillouin data give the shear modulus, G0 = 63 (3) GPa, and adiabatic bulk modulus, KS0 = 142 (9) GPa, which is considerably lower than the isothermal bulk modulus, KT0∼ 230 GPa, determined by high-pressure X-ray diffraction experiments.

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