Abstract :
Microstructure of MnF2 subjected to by shock compression at 4.4 GPa was examined using transmission electron microscopy (TEM). Lamellar structure consisting of twin-related domains of rutile-structure and intergrowth of α - PbO2-type phase is observed in the electron diffraction pattern and TEM images. The crystallographic relationship between rutile and α - PbO2-type phases can be expressed as ( 1 ̄ 01 ) rutile ∥ ( 001 ) α -PbO 2 and [ 111 ] rutile ∥ [ 110 ] α -PbO 2 .
