Electrophysical and thermodynamic properties of shock compressed incommensurate phase Sc-II

The electric resistance of shock-compressed scandium has been studied up to pressures of 90 GPa. The low-pressure phase of scandium Sc-I undergoes polymorphic transformation in the high-pressure incommensurate phase Sc-II at a shock pressure of approximate to 16.5 GPa and a calculated shock temperature of approximate to 510 K. The equation of state of the incommensurate phase Sc-II is constructed.