F2.4 Pb0.8 Th0.2 Soubeyroux J, Reau J, Matar S, Hagenmueller P, Lucat C Solid State Ionics 2 (1981) 215-229 Etude par diffraction de neutrons de la solution solide Pb1-x Thx F2+2x _cod_database_code 1008615 _database_code_amcsd 0016506 5.9644 5.9644 5.9644 90 90 90 Fm3m atom x y z occ Pb1 0 0 0 .8 Th1 0 0 0 .2 F1 .25 .25 .25 .69 F2 .5 .407 .407 .023 F3 .398 .398 .398 .04 F4 .307 .307 .307 .05