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- Title
Picosecond Acoustics Technique to Measure the Sound Velocities of Fe-Si Alloys and Si Single-Crystals at High Pressure.
- Authors
Edmund, Eric; Gauthier, Michel; Antonangeli, Daniele; Ayrinhac, Simon; Boccato, Silvia; Deletang, Thibault; Morand, Marc; Garino, Yiuri; Parisiades, Paraskevas; Decremps, Frédéric
- Abstract
We describe here a time resolved pump-probe laser technique—picosecond interferometry—which has been combined with diamond anvil cells (DAC). This method enables the measurement of the longitudinal sound velocity up to Mbar pressure for any kind of material (solids, liquids, metals, insulators). We also provide a description of picosecond acoustics data analysis in order to determine the complete set of elastic constants for single crystals. To illustrate such capabilities, results are given on the pressure dependence of the acoustic properties for prototypical cases: polycrystal (hcp-Fe-5 wt% Si up to 115 GPa) and single-crystal (Si up to 10 GPa).
- Subjects
SPEED of sound; ACOUSTICS; SOUND pressure; PUMP probe spectroscopy; DIAMOND anvil cell; ELASTIC constants
- Publication
Minerals (2075-163X), 2020, Vol 10, Issue 3, p214
- ISSN
2075-163X
- Publication type
Article
- DOI
10.3390/min10030214