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yuanzilee23至尊木虫 (著名写手)
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[交流]
[求助] LaCrO3晶体结构
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求LaCrO3 (JCPDS 24-1016)中各个原子的空间坐标,作图用 弱问:这些数据一般在哪里找的 谢谢 |
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xi2004
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5楼2008-10-13 16:04:36
xi2004
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看这是不是你想要的? *data for ICSD #91270 Coll Code 91270 Rec Date 2002/10/01 Mod Date 2005/10/01 Chem Name Lanthanum Chromate(III) Structured La (Cr O3) Sum Cr1 La1 O3 ANX ABX3 D(calc) 6.74 Title Structural phase transition of orthorhombic La Cr O3 studied by neutron powder diffraction Author(s) Oikawa, K.;Kamiyama, T.;Hashimoto, T.;Shimojyo, Y.;Morii, Y. Reference Journal of Solid State Chemistry (2000), 154, 524-529 Golden Book of Phase Transitions, Wroclaw (2002), 1, 1-123 Unit Cell 5.48588(14) 7.76824(19) 5.52467(12) 90. 90. 90. Vol 235.44 Z 4 Space Group P n m a SG Number 62 Cryst Sys orthorhombic Pearson oP20 Wyckoff d c2 b R Value .031 Red Cell P 5.485 5.524 7.768 89.999 89.999 90 235.438 Trans Red 1.000 0.000 0.000 / 0.000 0.000 1.000 / 0.000 -1.000 0.000 Comments Stable up to 533 K (2nd ref., Tomaszewski), above R3-c Neutron diffraction (powder) The structure has been assigned a PDF number (calculated powder diffraction data): 01-071-6612 The structure has been assigned a PDF number (experimental powder diffraction data): 24-1016 Rietveld profile refinement applied Temperature in Kelvin: 473 Structure type : GdFeO3 Atom # OX SITE x y z SOF H ITF(B) La 1 +3 4 c 0.0167(5) 0.25 -.0037(5) 1. 0 0 Cr 1 +3 4 b 0 0 0.5 1. 0 0.27(4) O 1 -2 4 c 0.4935(8) 0.25 0.0646(6) 1. 0 0 O 2 -2 8 d 0.2282(5) 0.5350(3) 0.2285(5) 1. 0 0 Lbl Type U11 U22 U33 U12 U13 U23 La1 La3+ 0.0063(11) 0.0086(11) 0.0051(8) 0 0.0010(9) 0 O1 O2- 0.0118(19) 0.0038(15) 0.0083(11) 0 -.0001(14) 0 O2 O2- 0.0085(10) 0.0113(10) 0.0071(9) 0.0008(10) 0.0036(9) 0.0005(10) *end for ICSD #91270 |

2楼2008-10-13 15:13:21
xi2004
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yuanzilee23(金币+5,VIP+0):xieixe
yuanzilee23(金币+5,VIP+0):xieixe
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也可能是这个 *data for ICSD #50755 Coll Code 50755 Rec Date 2000/07/15 Mod Date 2005/10/01 Chem Name Lanthanum Chromate(III) Structured La (Cr O3) Sum Cr1 La1 O3 ANX ABX3 D(calc) 6.76 Title A new series of complex perovskites La(1-x) Sr(x) Cr(1-x) Ti(x) O3:structural characterization Author(s) Mitchell, R.H.;Chakhmouradian, A.R. Reference Journal of Solid State Chemistry (1999), 144, 81-85 Golden Book of Phase Transitions, Wroclaw (2002), 1, 1-123 Unit Cell 5.5163(1) 5.4797(1) 7.7588(2) 90. 90. 90. Vol 234.53 Z 4 Space Group P b n m SG Number 62 Cryst Sys orthorhombic Pearson oP20 Wyckoff d c2 b R Value .07 Red Cell P 5.479 5.516 7.758 89.999 89.999 90 234.53 Trans Red 0.000 1.000 0.000 / 1.000 0.000 0.000 / 0.000 0.000 -1.000 Comments Stable up to 533 K (2nd ref., Tomaszewski), above R3-c The structure has been assigned a PDF number (calculated powder diffraction data): 01-089-4504 The structure has been assigned a PDF number (experimental powder diffraction data): 24-1016 Rietveld profile refinement applied Structure type : GdFeO3 X-ray diffraction (powder) Atom # OX SITE x y z SOF H ITF(B) La 1 +3 4 c -.0026(5) 0.0191(2) 0.25 1. 0 0.64(2) Cr 1 +3 4 b 0.5 0 0 1. 0 0.44(4) O 1 -2 4 c 0.059(3) 0.496(2) 0.25 1. 0 0.4(4) O 2 -2 8 d 0.228(3) 0.233(3) 0.537(2) 1. 0 1.3(3) *end for ICSD #50755 |

3楼2008-10-13 15:19:52
yuanzilee23
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4楼2008-10-13 15:39:05











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