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drg1984(½ð±Ò+1): ¸ÐлÄúµÄ½¨ÒéºÍ°ïÖú£¡ 2011-12-06 14:39:24
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ÕâЩ¿´µÃ¼ûÂ𣿠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 Bi1 Bi3+ 96 h 0.5 0.4716(9) 0.5284(9) 0.1388 0 Mg1 Mg2+ 96 h 0.5 0.4716(9) 0.5284(9) 0.0183 0 Nb1 Nb5+ 16 c 0 0 0 0.76 0 Mg2 Mg2+ 16 c 0 0 0 0.24 0 O1 O2- 48 f 0.3199(1) 0.125 0.125 1. 0 O2 O2- 32 e 0.3548(11) 0.3548(11) 0.3548(11) 0.25 0 |

4Â¥2011-12-06 11:15:18
xi2004
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Ö»¿´µ½ÏÂÃæÕâ¸ö data_245716-ICSD _database_code_ICSD 245716 _audit_creation_date 2008/08/01 _chemical_name_systematic ; Bismuth Magnesium Niobium Oxide (1.66/0.70/1.52/7) ; _chemical_formula_structural ; (Bi0.833 Mg0.11)2 (Mg0.24 Nb0.76)2 O7 ; _chemical_formula_sum 'Bi1.666 Mg0.7 Nb1.52 O7' _publ_section_title ; The disordered structures and low temperature dielectric relaxation properties of two misplaced-displacive cubic pyrochlores found in the Bi2O3-M(II)O-Nb2O5 (M = Mg, Ni) systems ; loop_ _citation_id _citation_journal_abbrev _citation_year _citation_journal_volume _citation_journal_issue _citation_page_first _citation_page_last _citation_journal_id_ASTM primary 'Journal of Solid State Chemistry' 2007 180 9 2558 2565 JSSCBI _publ_author_name ; Nguyen Hai Binh;Noren, L.;Liu Yun;Withers, R.L.;Wei Xiaoyong;Elcombe, M.M. ; _cell_length_a 10.5662(2) _cell_length_b 10.5662(2) _cell_length_c 10.5662(2) _cell_angle_alpha 90. _cell_angle_beta 90. _cell_angle_gamma 90. _cell_volume 1179.66 _cell_formula_units_Z 8 _symmetry_space_group_name_H-M 'F d -3 m Z' _symmetry_Int_Tables_number 227 _refine_ls_R_factor_all .0534 loop_ _symmetry_equiv_pos_site_id _symmetry_equiv_pos_as_xyz 1 '-z, y+.75, x+.75' 2 'z+.75, -y, x+.75' 3 'z+.75, y+.75, -x' 4 '-z, -y, -x' 5 'y+.75, x+.75, -z' 6 '-y, x+.75, z+.75' 7 'y+.75, -x, z+.75' 8 '-y, -x, -z' 9 'x+.75, -z, y+.75' 10 'x+.75, z+.75, -y' 11 '-x, z+.75, y+.75' 12 '-x, -z, -y' 13 '-z, x+.75, y+.75' 14 'z+.75, x+.75, -y' 15 'z+.75, -x, y+.75' 16 '-z, -x, -y' 17 'y+.75, -z, x+.75' 18 '-y, z+.75, x+.75' 19 'y+.75, z+.75, -x' 20 '-y, -z, -x' 21 'x+.75, y+.75, -z' 22 'x+.75, -y, z+.75' 23 '-x, y+.75, z+.75' 24 '-x, -y, -z' 25 'z, -y+.25, -x+.25' 26 '-z+.25, y, -x+.25' 27 '-z+.25, -y+.25, x' 28 'z, y, x' 29 '-y+.25, -x+.25, z' 30 'y, -x+.25, -z+.25' 31 '-y+.25, x, -z+.25' 32 'y, x, z' 33 '-x+.25, z, -y+.25' 34 '-x+.25, -z+.25, y' 35 'x, -z+.25, -y+.25' 36 'x, z, y' 37 'z, -x+.25, -y+.25' 38 '-z+.25, -x+.25, y' 39 '-z+.25, x, -y+.25' 40 'z, x, y' 41 '-y+.25, z, -x+.25' 42 'y, -z+.25, -x+.25' 43 '-y+.25, -z+.25, x' 44 'y, z, x' 45 '-x+.25, -y+.25, z' 46 '-x+.25, y, -z+.25' 47 'x, -y+.25, -z+.25' 48 'x, y, z' 49 '-z, y+.25, x+.25' 50 '-z+.5, y+.75, x+.25' 51 '-z+.5, y+.25, x+.75' 52 'z+.75, -y+.5, x+.25' 53 'z+.25, -y, x+.25' 54 'z+.25, -y+.5, x+.75' 55 'z+.75, y+.25, -x+.5' 56 'z+.25, y+.75, -x+.5' 57 'z+.25, y+.25, -x' 58 '-z, -y+.5, -x+.5' 59 '-z+.5, -y, -x+.5' 60 '-z+.5, -y+.5, -x' 61 'y+.75, x+.25, -z+.5' 62 'y+.25, x+.75, -z+.5' 63 'y+.25, x+.25, -z' 64 '-y, x+.25, z+.25' 65 '-y+.5, x+.75, z+.25' 66 '-y+.5, x+.25, z+.75' 67 'y+.75, -x+.5, z+.25' 68 'y+.25, -x, z+.25' 69 'y+.25, -x+.5, z+.75' 70 '-y, -x+.5, -z+.5' 71 '-y+.5, -x, -z+.5' 72 '-y+.5, -x+.5, -z' 73 'x+.75, -z+.5, y+.25' 74 'x+.25, -z, y+.25' 75 'x+.25, -z+.5, y+.75' 76 'x+.75, z+.25, -y+.5' 77 'x+.25, z+.75, -y+.5' 78 'x+.25, z+.25, -y' 79 '-x, z+.25, y+.25' 80 '-x+.5, z+.75, y+.25' 81 '-x+.5, z+.25, y+.75' 82 '-x, -z+.5, -y+.5' 83 '-x+.5, -z, -y+.5' 84 '-x+.5, -z+.5, -y' 85 '-z, x+.25, y+.25' 86 '-z+.5, x+.75, y+.25' 87 '-z+.5, x+.25, y+.75' 88 'z+.75, x+.25, -y+.5' 89 'z+.25, x+.75, -y+.5' 90 'z+.25, x+.25, -y' 91 'z+.75, -x+.5, y+.25' 92 'z+.25, -x, y+.25' 93 'z+.25, -x+.5, y+.75' 94 '-z, -x+.5, -y+.5' 95 '-z+.5, -x, -y+.5' 96 '-z+.5, -x+.5, -y' 97 'y+.75, -z+.5, x+.25' 98 'y+.25, -z, x+.25' 99 'y+.25, -z+.5, x+.75' 100 '-y, z+.25, x+.25' 101 '-y+.5, z+.75, x+.25' 102 '-y+.5, z+.25, x+.75' 103 'y+.75, z+.25, -x+.5' 104 'y+.25, z+.75, -x+.5' 105 'y+.25, z+.25, -x' 106 '-y, -z+.5, -x+.5' 107 '-y+.5, -z, -x+.5' 108 '-y+.5, -z+.5, -x' 109 'x+.75, y+.25, -z+.5' 110 'x+.25, y+.75, -z+.5' 111 'x+.25, y+.25, -z' 112 'x+.75, -y+.5, z+.25' 113 'x+.25, -y, z+.25' 114 'x+.25, -y+.5, z+.75' 115 '-x, y+.25, z+.25' 116 '-x+.5, y+.75, z+.25' 117 '-x+.5, y+.25, z+.75' 118 '-x, -y+.5, -z+.5' 119 '-x+.5, -y, -z+.5' 120 '-x+.5, -y+.5, -z' 121 'z, -y+.75, -x+.75' 122 'z+.5, -y+.25, -x+.75' 123 'z+.5, -y+.75, -x+.25' 124 '-z+.25, y+.5, -x+.75' 125 '-z+.75, y, -x+.75' 126 '-z+.75, y+.5, -x+.25' 127 '-z+.25, -y+.75, x+.5' 128 '-z+.75, -y+.25, x+.5' 129 '-z+.75, -y+.75, x' 130 'z, y+.5, x+.5' 131 'z+.5, y, x+.5' 132 'z+.5, y+.5, x' 133 '-y+.25, -x+.75, z+.5' 134 '-y+.75, -x+.25, z+.5' 135 '-y+.75, -x+.75, z' 136 'y, -x+.75, -z+.75' 137 'y+.5, -x+.25, -z+.75' 138 'y+.5, -x+.75, -z+.25' 139 '-y+.25, x+.5, -z+.75' 140 '-y+.75, x, -z+.75' 141 '-y+.75, x+.5, -z+.25' 142 'y, x+.5, z+.5' 143 'y+.5, x, z+.5' 144 'y+.5, x+.5, z' 145 '-x+.25, z+.5, -y+.75' 146 '-x+.75, z, -y+.75' 147 '-x+.75, z+.5, -y+.25' 148 '-x+.25, -z+.75, y+.5' 149 '-x+.75, -z+.25, y+.5' 150 '-x+.75, -z+.75, y' 151 'x, -z+.75, -y+.75' 152 'x+.5, -z+.25, -y+.75' 153 'x+.5, -z+.75, -y+.25' 154 'x, z+.5, y+.5' 155 'x+.5, z, y+.5' 156 'x+.5, z+.5, y' 157 'z, -x+.75, -y+.75' 158 'z+.5, -x+.25, -y+.75' 159 'z+.5, -x+.75, -y+.25' 160 '-z+.25, -x+.75, y+.5' 161 '-z+.75, -x+.25, y+.5' 162 '-z+.75, -x+.75, y' 163 '-z+.25, x+.5, -y+.75' 164 '-z+.75, x, -y+.75' 165 '-z+.75, x+.5, -y+.25' 166 'z, x+.5, y+.5' 167 'z+.5, x, y+.5' 168 'z+.5, x+.5, y' 169 '-y+.25, z+.5, -x+.75' 170 '-y+.75, z, -x+.75' 171 '-y+.75, z+.5, -x+.25' 172 'y, -z+.75, -x+.75' 173 'y+.5, -z+.25, -x+.75' 174 'y+.5, -z+.75, -x+.25' 175 '-y+.25, -z+.75, x+.5' 176 '-y+.75, -z+.25, x+.5' 177 '-y+.75, -z+.75, x' 178 'y, z+.5, x+.5' 179 'y+.5, z, x+.5' 180 'y+.5, z+.5, x' 181 '-x+.25, -y+.75, z+.5' 182 '-x+.75, -y+.25, z+.5' 183 '-x+.75, -y+.75, z' 184 '-x+.25, y+.5, -z+.75' 185 '-x+.75, y, -z+.75' 186 '-x+.75, y+.5, -z+.25' 187 'x, -y+.75, -z+.75' 188 'x+.5, -y+.25, -z+.75' 189 'x+.5, -y+.75, -z+.25' 190 'x, y+.5, z+.5' 191 'x+.5, y, z+.5' 192 'x+.5, y+.5, z' loop_ _atom_type_symbol _atom_type_oxidation_number Bi3+ 3 Mg2+ 2 Nb5+ 5 O2- -2 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 Bi1 Bi3+ 96 h 0.5 0.4716(9) 0.5284(9) 0.1388 0 Mg1 Mg2+ 96 h 0.5 0.4716(9) 0.5284(9) 0.0183 0 Nb1 Nb5+ 16 c 0 0 0 0.76 0 Mg2 Mg2+ 16 c 0 0 0 0.24 0 O1 O2- 48 f 0.3199(1) 0.125 0.125 1. 0 O2 O2- 32 e 0.3548(11) 0.3548(11) 0.3548(11) 0.25 0 loop_ _atom_site_aniso_label _atom_site_aniso_type_symbol _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Bi1 Bi3+ 0.025(9) 0.025(9) 0.018(6) -0.012(11) 0.0039(23) 0.0039(23) Mg1 Mg2+ 0.025(9) 0.025(9) 0.018(6) -0.012(11) 0.0039(23) 0.0039(23) Nb1 Nb5+ 0.0124(4) 0.0124(4) 0.0124(4) -0.0031(5) -0.0031(5) -0.0031(5) Mg2 Mg2+ 0.0124(4) 0.0124(4) 0.0124(4) -0.0031(5) -0.0031(5) -0.0031(5) O1 O2- 0.0281(8) 0.0166(4) 0.0166(4) 0.0000 0.0000 0.0090(6) O2 O2- 0.062(7) 0.062(7) 0.062(7) -0.004(3) -0.004(3) -0.004(3) #End of data_245716-ICSD |

2Â¥2011-12-06 08:37:18
gaohong1399
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3Â¥2011-12-06 11:11:21









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