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xiexie99
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
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*data for ICSD #22505 Coll Code 22505 Rec Date 1988/05/17 Mod Date 2003/04/01 Chem Name Iron(III) Oxide - Alpha Structured Fe2 O3 Sum Fe2 O3 ANX A2X3 Min Name Hematite D(calc) 5.27 Title The electron density distribution in hematite, Fe2 O3 alpha, from precision X-ray diffraction data. Author(s) Antipin, M.Yu.;Tsirel'son, V.G.;Flugge, M.P.;Gerr, R.G.; Struchkov, Yu.T.;Ozerov, R.P. Reference Doklady Akademii Nauk SSSR (1985), 281, 854-857 Unit Cell 5.0342(3) 5.0342(3) 13.7483(4) 90. 90. 120. Vol 301.75 Z 6 Space Group R -3 c H SG Number 167 Cryst Sys trigonal/rhombohedral Pearson hR10 Wyckoff e c R Value 0.0179 Red Cell RH 5.034 5.034 5.426 62.365 62.365 60 100.582 Trans Red 1.000 0.000 0.000 / 1.000 1.000 0.000 / 0.667 0.333 0.333 Comments Electron diffraction (powder) Compound with mineral name: Hematite The structure has been assigned a PDF number: 33-664 Atom # OX SITE x y z SOF H Fe 1 +3 12 c 0 0 0.3553(1) 1. 0 O 1 -2 18 e 0.6942(1) 0 0.25 1. 0 Lbl Type Beta11 Beta22 Beta33 Beta12 Beta13 Beta23 Fe1 Fe3+ 0.629(3) 0.629(3) 0.599(4) 0.315(2) 0 0 O1 O2- 0.693(5) 0.681(7) 0.667(6) 0.340(4) 0.044(2) 0.088(2) *end for ICSD #22505 |
2Â¥2007-12-03 18:54:21
xiexie99
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
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- ³æºÅ: 433986
- ×¢²á: 2007-08-18
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*data for ICSD #99305 Coll Code 99305 Rec Date 2005/04/01 Chem Name Iron Diiron(III) Oxide - Hp Structured Fe3 O4 Sum Fe3 O4 ANX AB2X4 Min Name Magnetite D(calc) 6.44 Title The structure of the metallic high-pressure Fe3 O4 polymorph: experimental and theoretical study Author(s) Dubrovinsky, L.S.;Dubrovinskaia, N.A.;McCammon, C.;Rozenberg, G.Kh.; Osorio-Guillen, J.M.;Dmitriev, V.;Weber, H.-P.; Le Bihan, T.;Johansson, B. Reference Journal of Physics: Condensed Matter (2003), 15, 7697-7706 Unit Cell 9.326 9.288 2.7555 90 90 90 Vol 238.68 Z 4 Space Group B b m m SG Number 63 Cryst Sys orthorhombic Pearson oS28 Wyckoff f2 c2 b Red Cell B 2.755 4.862 9.288 90 89.999 106.460 119.341 Trans Red 0.000 0.000 1.000 / -0.500 0.000 -0.500 / 0.000 -1.000 0.000 Comments Compound with mineral name: Magnetite Pressure in MPa: 41000 Structure calculated theoretically No R value given in the paper. At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Fe 1 +2 4 c 0.373 0.250 0. 1. 0 Fe 2 +3 8 f 0.128 0.071 0. 1. 0 O 1 -2 4 c 0.028 0.250 0. 1. 0 O 2 -2 8 f 0.221 0.620 0. 1. 0 O 3 -2 4 b 0.5 0. 0. 1. 0 *end for ICSD #99305 |
3Â¥2007-12-03 18:55:16
xiexie99
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
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- ³æºÅ: 433986
- ×¢²á: 2007-08-18
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maike01(½ð±Ò+3,VIP+0):лл
maike01(½ð±Ò+3,VIP+0):лл
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fe3o4 ±È½Ï¶à£¬×îºÃ˵Ïêϸµã¡£ÕâÊÇÆäÖеÄÒ»¸ö¡£ Á´½Ó¹ýÆÚÁË¡£ [ Last edited by xiexie99 on 2008-6-13 at 20:05 ] |
4Â¥2007-12-03 19:03:38
maike01
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5Â¥2007-12-03 19:40:44
xiexie99
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
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6Â¥2007-12-03 19:43:26
xiexie99
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
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- ×¢²á: 2007-08-18
7Â¥2007-12-03 19:44:57













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