Abstract
Measurements of Raman scattering under hydrostatic pressure in ${\mathrm{SrF}}_{2}$ show that the \ensuremath{\beta}\ensuremath{\rightarrow}\ensuremath{\alpha} phase transition, common to fluorite structures, occurs around 5.0 GPa at 300 K. Symmetry assignment of phonons in the \ensuremath{\alpha} phase is based on a comparison to other fluorite crystals. Hysteresis phenomena are observed and discussed. Anharmonic processes are shown to be small but not negligible.
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