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small_grass銀蟲(chóng) (小有名氣)
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[求助]
無(wú)序體系的建模問(wèn)題 已有3人參與
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模擬無(wú)序體系,其中有Li1.4RuO3,有四個(gè)鋰的位置,各占0.7。不知道該怎么建立模型,想用castep算一下能帶和態(tài)密度,甚是頭大。懇請(qǐng)各位大神指點(diǎn)一二。 data for ICSD #78722 Coll Code 78722 Rec Date 1997/05/13 Chem Name Lithium Ruthenium Oxide (1.4/1/3) Structured Li1.4 Ru O3 Sum Li1.4 O3 Ru1 ANX A8B11X24 D(calc) 5.05 Title Structure and lithium deintercalation of Li2-x Ru O3 Author(s) Kobayashi, H.;Kanno, R.;Kawamoto, Y.;Tabuchi, M.;Nakamura, O.;Tanako, M. Reference Solid State Ionics (1995), 82, 25-31 Unit Cell 4.9398(6) 8.6271(10) 9.9353(8) 90. 99.262(9) 90. Vol 417.88 Z 8 Space Group C 1 2/c 1 SG Number 15 Cryst Sys monoclinic Pearson mS43 Wyckoff f4 e3 d R Value .0865 Red Cell C 4.939 4.970 9.935 85.412 80.737 60.204 208.942 Trans Red -1.000 0.000 0.000 / -0.500 -0.500 0.000 / 0.000 0.000 1.000 Comments No data on SOF(Li) given; x,y,z(O2) not consistent with listed distances Total SOF on at least one site differs from unity (SOF < 0.997 resp. SOF > 1.003) The structure has been assigned a PDF number (calculated powder diffraction data): 01-085-2001 Rietveld profile refinement applied X-ray diffraction (powder) Atom # OX SITE x y z SOF H ITF(U) Ru 1 +4.6 8 f 0.237(2) 0.0843(8) 0.0012(15) 1. 0 0.17(14) Li 1 +1 4 d 0.25 0.25 0.5 0.7 0 0.17(14) Li 2 +1 4 e 0 0.09(6) 0.25 0.7 0 0.17(14) Li 3 +1 4 e 0 0.41(7) 0.25 0.7 0 0.17(14) Li 4 +1 4 e 0 0.72(3) 0.25 0.7 0 0.17(14) O 1 -2 8 f 0.132(11) 0.25(2) 0.120(3) 1. 0 0.17(14) O 2 -2 8 f 0.122(15) 0.577(1) 0.100(4) 1. 0 0.17(14) O 3 -2 8 f 0.128(15) 0.923(15) 0.129(4) 1. 0 0.17(14) *end for ICSD #78722 |

鐵桿木蟲(chóng) (著名寫(xiě)手)
銀蟲(chóng) (小有名氣)

鐵桿木蟲(chóng) (著名寫(xiě)手)
木蟲(chóng) (正式寫(xiě)手)
銀蟲(chóng) (小有名氣)

鐵桿木蟲(chóng) (著名寫(xiě)手)
鐵桿木蟲(chóng) (正式寫(xiě)手)
| 單純用CASTEP計(jì)算,可以計(jì)算不同空位的總能,來(lái)進(jìn)行判斷。最好是能用蒙特卡洛計(jì)算進(jìn)行模擬,來(lái)得到空位 |
銀蟲(chóng) (小有名氣)

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