Abstract
Fluorite, CaF2, is a model ionic solid and prototypical structure type in condensed matter physics, undergoing pressure-induced phase transitions to a highly coordinated AX2 structure. In this study, the shock-induced phase transitions in CaF2 were investigated by plate impact experiments carried out using the single stage powder gun at Soreq NRC. Single-crystal samples in (111) and (100) orientations were shock loaded to pressures in the range of 16 to 42 GPa. The particle velocities were probed by a PDV interferometer. The wave structure evolution measured in samples of different thicknesses allowed us to extract the shock velocity in the compressed material. We observe evidence of a transition to a high-pressure phase, where the phase transition seems to be sensitive to pressure and strain-rate.
Original language | English |
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Article number | 400001 |
Journal | AIP CONFERENCE PROCEEDINGS |
Volume | 2844 |
Issue number | 1 |
DOIs | |
State | Published - 26 Sep 2023 |
Externally published | Yes |
Event | 22nd Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2022 - Anaheim, United States Duration: 10 Jul 2022 → 15 Jul 2022 |
ASJC Scopus subject areas
- General Physics and Astronomy