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2Â¥2008-09-20 15:59:27
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ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- CMEI: 10
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*data for ICSD #23811 Coll Code 23811 Rec Date 1986/09/23 Mod Date 2006/04/01 Chem Name Yttrium Oxide Structured Y2 O3 Sum O3 Y2 ANX A2X3 D(calc) 5.03 Title A refinement of the crystal structure of yttria Author(s) Paton, M.G.;Maslen, E.N. Reference Acta Crystallographica (1,1948-23,1967) (1965), 19, 307-310 Golden Book of Phase Transitions, Wroclaw (2002), 1, 1-123 Unit Cell 10.604(2) 10.604(2) 10.604(2) 90. 90. 90. Vol 1192.36 Z 16 Space Group I a -3 SG Number 206 Cryst Sys cubic Pearson cI80 Wyckoff e d b R Value .082 Red Cell I 9.183 9.183 9.183 109.471 109.471 109.471 596.182 Trans Red 0.500 0.500 -0.500 / -0.500 0.500 0.500 / 0.500 -0.500 0.500 Comments Stable up to 2570 K (2nd ref., Tomaszewski), above hexagonal, m.p. 2670 K The structure has been assigned a PDF number (calculated powder diffraction data): 01-073-1334 The structure has been assigned a PDF number (experimental powder diffraction data): 41-1105 Structure type : Mn2O3 X-ray diffraction from single crystal Atom # OX SITE x y z SOF H ITF(B) Y 1 +3 8 b 0.25 0.25 0.25 1. 0 0.98 Y 2 +3 24 d -.0328(2) 0 0.25 1. 0 0 O 1 -2 48 e 0.389(1) 0.154(1) 0.378(1) 1. 0 0 Lbl Type Beta11 Beta22 Beta33 Beta12 Beta13 Beta23 Y2 Y3+ 0.0019 0.0028 0.0018 0 0 0 O1 O2- 0.0031 0.0027 0.0035 0.0009 -.0003 -.0001 *end for ICSD #23811 ºÃ¶à£¬¡¡ÊDz»ÊÇÕâ¸ö£¿ |

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4Â¥2008-09-25 10:19:11














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