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hanguihong鐵桿木蟲 (小有名氣)
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[求助]
求Fe3O4, Fe2O3 and FeTiO3晶體結(jié)構(gòu)
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| 每個(gè)100金幣。 |

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Fe3O4:空間群為 F d -3 m Z時(shí),是立方結(jié)構(gòu);空間群為B b m m時(shí),為正交; 空間群為P 1 2/c 1時(shí),為單斜; Fe2O3:空間群有好幾種,但是結(jié)構(gòu)全為為三方或四方結(jié)構(gòu); FeTiO3:空間群為R -3 H,結(jié)構(gòu)為三方或四方結(jié)構(gòu)。 |
鐵桿木蟲 (正式寫手)

鐵桿木蟲 (小有名氣)

鐵桿木蟲 (小有名氣)
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我把我測的晶胞參數(shù)發(fā)給你,如果幫我完成,定當(dāng)重謝!!! 礦物 空間群 a(Å) b(Å) c(Å) α(o) β(o) γ(o) Fe3O4 Fd-3m 8.38265 8.38265 8.38265 90.000 90.000 90.000 Fe2O3 R-3 5.07934 5.07934 14.05878 90.000 90.000 120.000 FeTiO3 R-3c 5.02169 5.02169 13.71474 90.000 90.000 120.000 |

鐵桿木蟲 (小有名氣)

鐵桿木蟲 (正式寫手)

版主 (職業(yè)作家)
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Fe3O4 *data for ICSD #158741 Coll Code 158741 Rec Date 2008/08/01 Chem Name Iron Diiron(III) Oxide Structured Fe3 O4 Sum Fe3 O4 ANX AB2X4 Min Name Magnetite D(calc) 5.22 Title Crystal structure of magnetite under pressure Author(s) Nakagiri, N.;Manghnani, M.H.;Ming, L.C.;Kimura, S. Reference Physics and Chemistry of Minerals (Germany) (1986), 13, 238-244 Unit Cell 8.3862(2) 8.3862(2) 8.3862(2) 90. 90. 90. Vol 589.79 Z 8 Space Group F d -3 m Z SG Number 227 Cryst Sys cubic Pearson cF56 Wyckoff e d a R Value .026 Red Cell F 5.929 5.929 5.929 60 60 60 147.447 Trans Red 0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500 Comments Compound with mineral name: Magnetite Pressure in MPa: 630 Temperature in Kelvin: 293 Structure type : Al2MgO4 X-ray diffraction from single crystal Atom # OX SITE x y z SOF H Fe 1 +3 8 a 0.125 0.125 0.125 1. 0 Fe 2 +2.5 16 d 0.5 0.5 0.5 1. 0 O 1 -2 32 e 0.2539(5) 0.2539(5) 0.2539(5) 1. 0 *end for ICSD #158741 ----------------------------------- Fe2O3 *data for ICSD #415251 Coll Code 415251 Rec Date 2007/08/01 Chem Name Diiron(III) Oxide - Alpha Structured Fe2 O3 Sum Fe2 O3 ANX A2X3 Min Name Hematite D(calc) 5.3 Title Synthesis and structural analysis of epsilon-(Fe2 O3) Author(s) Kelm, K.;Mader, W. Reference Zeitschrift fuer Anorganische und Allgemeine Chemie (2005), 631, 2383-2389 Unit Cell 5.0259(2) 5.0259(2) 13.735(1) 90. 90. 120. Vol 300.46 Z 6 Space Group R -3 c H SG Number 167 Cryst Sys trigonal/rhombohedral Pearson hR10 Wyckoff e c R Value .0185 Red Cell RH 5.025 5.025 5.420 62.379 62.379 60 100.153 Trans Red 1.000 0.000 0.000 / 1.000 1.000 0.000 / 0.667 0.333 0.333 Comments Compound with mineral name: Hematite Rietveld profile refinement applied Structure type : Al2O3 X-ray diffraction (powder) Atom # OX SITE x y z SOF H Fe 1 +3 12 c 0.0000000 0.0000000 0.3553000 1. 0 O 1 -2 18 e 0.3059000 0.0000000 0.2500000 1. 0 Lbl Type U11 U22 U33 U12 U13 U23 O1 O2- 0.0064208 0.0079084 0.0031540 0.0039926 0.0015144 0.0034830 *end for ICSD #415251 ------------------------------------------- FeTiO3 *data for ICSD #30664 Coll Code 30664 Rec Date 1984/12/31 Mod Date 1998/06/26 Chem Name Iron Titanate Structured Fe (Ti O3) Sum Fe1 O3 Ti1 ANX ABX3 Min Name Ilmenite D(calc) 4.79 Title Crystal structure of ilmenite (Fe Ti O3) at high temperature and high pressure Author(s) Wechsler, B.A.;Prewitt, C.T. Reference American Mineralogist (1984), 69, 176-185 Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) (1934), 88, 265-270 Unit Cell 5.0884(1) 5.0884(1) 14.0855(4) 90. 90. 120. Vol 315.84 Z 6 Space Group R -3 H SG Number 148 Cryst Sys trigonal/rhombohedral Pearson hR10 Wyckoff f c2 R Value .019 Red Cell RH 5.088 5.088 5.538 62.653 62.653 60 105.28 Trans Red 1.000 0.000 0.000 / 1.000 1.000 0.000 / 0.667 0.333 0.333 Comments Compound with mineral name: Ilmenite The structure has been assigned a PDF number (calculated powder diffraction data): 01-075-1203 The structure has been assigned a PDF number (experimental powder diffraction data): 29-733 Temperature in Kelvin: 297 Structure type : FeTiO3 X-ray diffraction from single crystal Unusual difference between calculated and measured density Atom # OX SITE x y z SOF H Fe 1 +2 6 c 0 0 0.35537(2) 1. 0 Ti 1 +4 6 c 0 0 0.14640(2) 1. 0 O 1 -2 18 f 0.31743(18) 0.02332(17) 0.24506(5) 1. 0 *end for ICSD #30664 ------------------------- 可以使用diamond那樣的軟件繪制圖形。 軟件在這里可下: http://www.gaoyang168.com/bbs/viewthread.php?tid=4475643&fpage=1 |
鐵桿木蟲 (小有名氣)

鐵桿木蟲 (小有名氣)

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