Bi1.5 O7 Ta1.5 Zn Jeanne G, Desgardin G, Raveau B Materials Research Bulletin 9 (1974) 1321-1332 Synthese et evolution structurale de nouveaux pyrochlores au bismuth _cod_database_code 1001126 _database_code_amcsd 0014240 10.54 10.54 10.54 90 90 90 Fd3m atom x y z occ Bi1 .625 .625 .625 .75 Zn1 .625 .625 .625 .25 Zn2 .125 .125 .125 .25 Ta1 .125 .125 .125 .75 O1 .35 0 0 O2 .5 .5 .5