Silicon Olijnyk H, Sikka S K, Holzapfel W B Physics Letters 103A (1984) 137-140 Structural phase transitions in Si and Ge under pressures up to 50 GPa Locality: synthetic Sample: at P = 19.5 GPa Note: phase V, structure stable between 16 GPa & 34 GPa _database_code_amcsd 0015303 2.527 2.527 2.373 90 90 120 P6/mmm atom x y z Si 0 0 0