#------------------------------------------------------------------------------
#$Date: 2016-02-14 15:26:36 +0100 (Sun 14 de Feb de 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/14/1001497.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_1001497
loop_
_publ_author_name
'Suard, E'
'Caignaert, V'
'Maignan, A'
'Raveau, B'
_publ_section_title
;
The important role of pyramidal copper layers of the 123-structure in
superconductivity. The oxides Ba₂Y₁₋ₓCaₓCu₃₋ₓFeₓO₇ and
Ba₂Y₁₋ₓCaₓCu₃₋ₓFeₓO₆
;
_journal_coden_ASTM              PHYCE6
_journal_name_full               'Physica C (Amsterdam) (152,1988-)'
_journal_page_first              219
_journal_page_last               227
_journal_paper_doi               10.1016/0921-4534(91)90515-Z
_journal_volume                  182
_journal_year                    1991
_chemical_formula_structural
;
(Y0.76 Ca0.24) Ba2 Cu (Cu0.88 Fe0.12)2 O7.07
;
_chemical_formula_sum            'Ba2 Ca0.24 Cu2.76 Fe0.24 O7.07 Y0.76'
_chemical_name_systematic
;
Yttrium calcium barium copper iron(III) oxide (0.8/0.2/2/2.8/0.2/7.1)
;
_space_group_IT_number           47
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      47
_symmetry_space_group_name_Hall  '-P 2 2'
_symmetry_space_group_name_H-M   'P m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   3.8263(1)
_cell_length_b                   3.8263(1)
_cell_length_c                   11.6643(3)
_cell_volume                     170.8
_refine_ls_R_factor_all          0.063
_cod_original_formula_sum        'Ba2 Ca.24 Cu2.76 Fe.24 O7.07 Y.76'
_cod_database_code               1001497
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z
x,-y,-z
-x,y,-z
-x,-y,-z
x,y,-z
-x,y,z
x,-y,z
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
Y1 Y3+ 1 h 0.5 0.5 0.5 0.76 0 d
Ca1 Ca2+ 1 h 0.5 0.5 0.5 0.24 0 d
Ba1 Ba2+ 2 t 0.5 0.5 0.1841(3) 1. 0 d
Cu1 Cu2+ 1 a 0. 0. 0. 1. 0 d
Cu2 Cu2+ 2 q 0. 0. 0.3544(2) 0.88 0 d
Fe1 Fe3+ 2 q 0. 0. 0.3544(2) 0.12 0 d
O1 O2- 2 r 0. 0.5 0.3766(3) 1. 0 d
O2 O2- 2 s 0.5 0. 0.3760(3) 1. 0 d
O3 O2- 2 q 0. 0. 0.1592(2) 1. 0 d
O4 O2- 1 b 0.5 0. 0. 0.93(2) 0 d
O5 O2- 1 e 0. 0.5 0. 0.14(1) 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Y3+ 3.000
Ca2+ 2.000
Ba2+ 2.000
Cu2+ 2.413
Fe3+ 3.000
O2- -2.000
