Opacity of KCl single crystal shocked above the transition pressure Academic Article uri icon

abstract

  • Strong absorption of light by shock-transformed KCl (potassium chloride) single crystal has been used for measurement of electrical conductivity of its high-pressure B2 phase. The obtained conductivity values allow the determination of the width W of the gap between the valence and the conduction bands and its dependence W=W0(1−be) on the compressive strain e. The values of the gap width W0=0.49±0.06 eV and of the parameter b=1.4±0.4 lead to the conclusion that KCl in its high-pressure modification is a semiconductor.

publication date

  • January 1, 2001