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shad-hunter: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл 2013-11-01 10:18:21
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shad-hunter: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл 2013-11-01 10:18:21
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ÕÒµ½Ò»¸öÀàËÆµÄ£¬Ï£ÍûÓаïÖú°É *data for ICSD #52623 Coll Code 52623 Rec Date 2003/04/01 Chem Name Aluminum Iron Manganese Silicide (17/3.2/0.8/2) Structured Al17 (Fe3.2 Mn0.8) Si2 Sum Al17 Fe3.2 Mn0.8 Si2 ANX N4O19 D(calc) 3.71 Title The crystal structure of ternary alpha-(Al Fe Si) Author(s) Cooper, M. Reference Acta Crystallographica (1,1948-23,1967) (1967), 23, 1106-1107 Unit Cell 12.56(2) 12.56 12.56 90. 90. 90. Vol 1981.39 Z 6 Space Group P m -3 SG Number 200 Cryst Sys cubic Pearson cP138 Wyckoff l2 k3 j3 h f e R Value .1 Red Cell P 12.56 12.56 12.56 90 90 90 1981.385 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments In other domains other positions for Al7 (.2010 .5 0), Al8 (.3725 .3803 0), and Al9 (.1734 .097 .5) (and Si7, Si8, Si9) Both domains together yield as average space group IM3- The structure has been assigned a PDF number (calculated powder diffraction data): 01-071-4015 X-ray diffraction from single crystal Unusual difference between calculated and measured density At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Fe 1 +0 12 j 0.3243 0.1981 0 0.8 0 Mn 1 +0 12 j 0.3243 0.1981 0 0.2 0 Fe 2 +0 12 k 0.1757 0.3019 0.5 0.8 0 Mn 2 +0 12 k 0.1757 0.3019 0.5 0.2 0 Al 1 +0 6 e 0.3777 0 0 0.895 0 Al 2 +0 6 h 0.1223 0.5 0.5 0.895 0 Al 3 +0 12 j 0.1651 0.1006 0 0.895 0 Al 4 +0 12 k 0.3349 0.3994 0.5 0.895 0 Al 5 +0 24 l 0.1146 0.1872 0.3003 0.895 0 Al 6 +0 24 l 0.3854 0.3128 0.1977 0.895 0 Al 7 +0 6 f 0.299 0 0.5 0.895 0 Al 8 +0 12 j 0.3266 0.403 0 0.895 0 Al 9 +0 12 k 0.1275 0.117 0.5 0.895 0 Si 1 +0 6 e 0.3777 0 0 0.105 0 Si 2 +0 6 h 0.1223 0.5 0.5 0.105 0 Si 3 +0 12 j 0.1651 0.1006 0 0.105 0 Si 4 +0 12 k 0.3349 0.3994 0.5 0.105 0 Si 5 +0 24 l 0.1146 0.1872 0.3003 0.105 0 Si 6 +0 24 l 0.3854 0.3128 0.1977 0.105 0 Si 7 +0 6 f 0.299 0 0.5 0.105 0 Si 8 +0 12 j 0.3266 0.403 0 0.105 0 Si 9 +0 12 k 0.1275 0.117 0.5 0.105 0 *end for ICSD #52623 |
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