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gaohong1399

½ð³æ (³õÈëÎÄ̳)

[ÇóÖú] ÇóÖúBi1.5MgNb1.5O7µÄcifÎļþ

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xi2004

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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drg1984(½ð±Ò+1): ¸ÐлÄúµÄ½¨ÒéºÍ°ïÖú£¡ 2011-12-06 14:39:24
ÒýÓûØÌû:
3Â¥: Originally posted by gaohong1399 at 2011-12-06 11:11:21:
ÕâÀïÃæÔõôûÓÐÔ­×ÓÐÅÏ¢ÄØ£¿

ÕâЩ¿´µÃ¼ûÂð£¿

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
xi2004-emuch@163.com
4Â¥2011-12-06 11:15:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

xi2004

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
drg1984(½ð±Ò+1): ¸ÐлÄúµÄ½¨ÒéºÍ°ïÖú£¡ 2011-12-06 14:39:13
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
xi2004-emuch@163.com
2Â¥2011-12-06 08:37:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

gaohong1399

½ð³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by xi2004 at 2011-12-06 08:37:18:
Ö»¿´µ½ÏÂÃæÕâ¸ö

data_245716-ICSD
_database_code_ICSD                245716
_audit_creation_date               2008/08/01
_chemical_name_systematic
;
Bismuth Magnesium Niobium Oxide (1.66/0.7 ...

ÕâÀïÃæÔõôûÓÐÔ­×ÓÐÅÏ¢ÄØ£¿
3Â¥2011-12-06 11:11:21
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