F2.46 Pb0.77 Th0.23 Soubeyroux J, Reau J, Matar S, Hagenmueller P, Lucat C Solid State Ionics 2 (1981) 215-229 Etude par diffracton de neutrons de la solution solide Pb1-x Thx F2+2x _cod_database_code 1008616 _database_code_amcsd 0016507 5.9687 5.9687 5.9687 90 90 90 Fm3m atom x y z occ Pb1 0 0 0 .77 Th1 0 0 0 .23 F1 .25 .25 .25 .73 F2 .5 .409 .409 .023 F3 .397 .397 .397 .05 F4 .304 .304 .304 .04