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wyy1988v金蟲(chóng) (小有名氣)
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[求助]
誰(shuí)知道MS中鎂鋁尖晶石的模型怎樣構(gòu)建?
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| 我想要在MS中構(gòu)建鎂鋁尖晶石結(jié)構(gòu)晶胞,群代號(hào)和晶格常數(shù)都知道,主要是各原子的位置坐標(biāo)和占位,有誰(shuí)知道嗎?拜托幫幫忙了! |
科研軟件資料 |

金蟲(chóng) (正式寫(xiě)手)
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版主,我在建尖晶石模型的時(shí)候,添加原子出現(xiàn)這個(gè)提示:Chosen position is within the specified tolerance(1.0) of a symmetry copy of itself.這個(gè)是什么原因?怎么解決?盼望您的回復(fù) 以下是詳細(xì)晶胞數(shù)據(jù) Structured Mg Al2 O4 Sum Al2 Mg1 O4 ANX AB2X4 Min Name Spinel Unit Cell 8.0834(5) 8.0834 8.0834 90. 90. 90. Space Group F d -3 m Z SG Number 227 Cryst Sys cubic Pearson cF56 Wyckoff e d a Red Cell F 5.715 5.715 5.715 60 60 60 132.045 Trans Red 0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500 Comments Cell from empirical functions related to composition: 8.087 (2nd reference) Compound with mineral name: Spinel The structure has been assigned a PDF number (calculated powder diffraction data): 01-071-6328 The structure has been assigned a PDF number (experimental powder diffraction data): 21-1152 Temperature in Kelvin: 293 Structure type : Al2MgO4 X-ray diffraction from single crystal No R value given in the paper. At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Mg 1 +2 8 a 0.125 0.125 0.125 0.79 0 Al 1 +3 8 a 0.125 0.125 0.125 0.21 0 Al 2 +3 16 d 0.5 0.5 0.5 0.895 0 Mg 2 +2 16 d 0.5 0.5 0.5 0.105 0 O 1 -2 32 e 0.2623(1) 0.2623 0.2623 1. 0 |
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