#------------------------------------------------------------------------------ #$Date: 2015-01-27 19:58:39 +0000 (Tue, 27 Jan 2015) $ #$Revision: 130149 $ #$URL: svn://www.crystallography.net/cod/cif/1/00/16/1001634.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1001634 loop_ _publ_author_name 'Ledesert, M' 'Maignan, A' 'Chardon, J' 'Martin, C' 'Labbe, Ph' 'Hervieu, M' 'Raveau, B' _publ_section_title ; (Tl, Bi) Sr2 Ca Cu2 O7 "1212" superconducting single crystal. A structural and magnetic study ; _journal_coden_ASTM PHYCE6 _journal_name_full 'Physica C (Amsterdam) (152,1988-)' _journal_page_first 387 _journal_page_last 395 _journal_paper_doi 10.1016/0921-4534(94)90798-6 _journal_volume 232 _journal_year 1994 _chemical_formula_structural '(Tl0.67 Bi0.33) (Ca0.89 Tl0.11) Sr2 Cu2 O7' _chemical_formula_sum 'Bi0.33 Ca0.89 Cu2 O7 Sr2 Tl0.78' _chemical_name_systematic ; Thallium bismuth calcium strontium copper oxide (0.78/0.33/0.89/2/2/7) ; _space_group_IT_number 123 _symmetry_cell_setting tetragonal _symmetry_Int_Tables_number 123 _symmetry_space_group_name_Hall '-P 4 2' _symmetry_space_group_name_H-M 'P 4/m m m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 1 _cell_length_a 3.7922(6) _cell_length_b 3.7922(6) _cell_length_c 12.0661(25) _cell_volume 173.5 _refine_ls_R_factor_all 0.025 _[local]_cod_chemical_formula_sum_orig 'Bi.33 Ca.89 Cu2 O7 Sr2 Tl.78' _cod_database_code 1001634 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,-y,z -x,y,z x,-y,z -y,x,z y,-x,z y,x,z -y,-x,z -x,-y,-z x,y,-z x,-y,-z -x,y,-z y,-x,-z -y,x,-z -y,-x,-z y,x,-z loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_22 _atom_site_aniso_U_23 _atom_site_aniso_U_33 Tl1 0.031(1) 0. 0. 0.0137(5) 0. 0.0046(2) Bi1 0.031(1) 0. 0. 0.0137(5) 0. 0.0046(2) Ca1 0.0083(6) 0. 0. 0.0083(6) 0. 0.0091(7) Tl2 0.0083(6) 0. 0. 0.0083(6) 0. 0.0091(7) Sr1 0.0101(3) 0. 0. 0.0101(3) 0. 0.0124(4) Cu1 0.0058(3) 0. 0. 0.0058(3) 0. 0.0106(5) O1 0.012(3) 0. 0. 0.010(3) 0. 0.014(2) O2 0.016(13) 0. 0. 0.016(3) 0. 0.010(3) O3 0.016(39) -0.01(1) 0. 0.016(9) 0. 0.02(1) loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Tl1 Tl3+ 4 l 0.0575(4) 0. 0. 0.1675 0 d Bi1 Bi3+ 4 l 0.0575(4) 0. 0. 0.0825 0 d Ca1 Ca2+ 1 d 0.5 0.5 0.5 0.89 0 d Tl2 Tl3+ 1 d 0.5 0.5 0.5 0.11 0 d Sr1 Sr2+ 2 h 0.5 0.5 0.2170(1) 1. 0 d Cu1 Cu2+ 2 g 0. 0. 0.3642(1) 1. 0 d O1 O2- 4 i 0. 0.5 0.3693(5) 1. 0 d O2 O2- 2 g 0. 0. 0.1660(8) 1. 0 d O3 O2- 4 j 0.411(5) 0.411(5) 0. 0.25 0 d loop_ _atom_type_symbol _atom_type_oxidation_number Tl3+ 3.000 Bi3+ 3.000 Ca2+ 2.000 Sr2+ 2.000 Cu2+ 2.445 O2- -2.000