data_global _amcsd_formula_title 'Cr7.87 Ga4.13 O19 Sr' loop_ _publ_author_name 'Obradors X' 'Labarta A' 'Isalgue A' 'Tejada J' 'Rodriguez J' 'Pernet M' _journal_name_full 'Solid State Communications' _journal_volume 65 _journal_year 1988 _journal_page_first 189 _journal_page_last 192 _publ_section_title ; Magnetic frustration and lattice dimensionality in Sr Cr8 Ga4 O19 _cod_database_code 1006009 ; _database_code_amcsd 0015456 _chemical_formula_sum 'Sr Ga4.13 Cr7.87 O19' _cell_length_a 5.7993 _cell_length_b 5.7993 _cell_length_c 22.6584 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 659.950 _exptl_crystal_density_diffrn 5.479 _symmetry_space_group_name_H-M 'P 63/m m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' '-y,-x,z' 'y,x,-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x,x-y,z' '-x,-x+y,-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x+y,y,z' 'x-y,-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Sr1 0.00000 0.00000 0.25000 1.00000 Ga1 0.00000 0.00000 0.00000 0.04000 Cr1 0.00000 0.00000 0.00000 0.96000 Ga2 0.00000 0.00000 0.25610 0.50000 Ga3 0.33333 0.66667 0.02820 1.00000 Ga4 0.33333 0.66667 0.19250 0.13500 Cr2 0.33333 0.66667 0.19250 0.86500 Ga5 0.16810 0.33620 -0.10840 0.13670 Cr3 0.16810 0.33620 -0.10840 0.86330 O1 0.00000 0.00000 0.15150 1.00000 O2 0.33333 0.66667 -0.05450 1.00000 O3 0.18210 0.36420 0.25000 1.00000 O4 0.15670 0.31340 0.05280 1.00000 O5 0.50530 0.01060 0.15100 1.00000