data_2003146 _journal_name_full 'Acta Crystallographica, Section B' _journal_year 1998 _journal_volume B54 _journal_page_first 750 _journal_page_last 765 _chemical_formula_sum 'Pb Zr O3' _chemical_formula_weight 346.41 _symmetry_cell_setting orthorhombic _symmetry_space_group_name_H-M 'P b a m' _symmetry_space_group_name_Hall '-P 2 2ab' loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,-z' 'x,y,-z' '-x,-y,+z' '1/2+x,1/2-y,z' '-1/2-x,-1/2+y,-z' '1/2-x,1/2+y,z' '-1/2+x,-1/2-y,-z' _cell_length_a 5.8775(3) _cell_length_b 11.7835(4) _cell_length_c 8.2088(4) _cell_angle_alpha 90.00 _cell_angle_beta 90.00 _cell_angle_gamma 90.00 _cell_volume 568.50 _cell_formula_units_Z 4 _diffrn_radiation_type 'neutron' _diffrn_radiation_wavelength 0.71073 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_type_symbol Pb 0.704(2) 0.123(2) 0.000(2) 0.190(10) Biso Pb Pb' 0.704(2) 0.127(2) 0.500(2) 0.190(10) Biso Pb Zr 0.240(2) 0.125(2) 0.250(2) 0.130(10) Biso Zr Zr' 0.240(2) 0.125(2) 0.750(2) 0.130(10) Biso Zr O1 0.278(2) 0.151(2) 0.000(2) 0.150(10) Biso O O1' 0.308(2) 0.094(2) 0.500(2) 0.150(10) Biso O O2 0.034(2) 0.262(2) 0.284(2) 0.150(10) Biso O O2' 0.034(2) 0.262(2) 0.716(2) 0.150(10) Biso O O3 0.000(2) 0.500(2) 0.202(2) 0.150(10) Biso O O3' 0.000(2) 0.500(2) 0.798(2) 0.150(10) Biso O O4 0.000(2) 0.000(2) 0.229(2) 0.150(10) Biso O O4' 0.000(2) 0.000(2) 0.771(2) 0.150(10) Biso O