Cu La0.7 O5 Sr Tl1.3 Huve M, Michel C, Martin C, Hervieu M, Maignan A, Provost J, Raveau B Physica C 179 (1991) 214-226 The "1201"-phase of the "Tl-Sr-La-Cu-O" system. Homogeneity range, structure and superconductivity _cod_database_code 1001489 _database_code_amcsd 0015028 3.7713 3.7713 8.8676 90 90 90 P4/mmm atom x y z occ Tl1 0 0 .5 Sr1 .5 .5 .2044 .5 La1 .5 .5 .2044 .35 Tl2 .5 .5 .2044 .15 Cu1 0 0 0 O1 0 0 .281 O2 .5 .5 .5 O3 .5 0 0