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2H-SiC 的分数坐标
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大家好,我想求2H-SiC的分数坐标数据。 目前只有如下信息:六角纤锌矿结构(Hexagonal Wurtzite)属于P63mc空间群,晶格常数a=b=0.3081nm,c=0.5031nm,α=β=90°,γ=120° 目前金币不多,请大家慷慨帮忙啊。。。 |
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★ ★ ★ ★
小木虫: 金币+0.5, 给个红包,谢谢回帖
xueht987: 金币+1, 多谢指教! 2012-06-19 09:44:06
Yolanda7: 金币+2, 谢谢啦 2012-06-25 20:13:03
小木虫: 金币+0.5, 给个红包,谢谢回帖
xueht987: 金币+1, 多谢指教! 2012-06-19 09:44:06
Yolanda7: 金币+2, 谢谢啦 2012-06-25 20:13:03
2楼2012-06-19 05:57:29
★ ★ ★ ★ ★ ★ ★
小木虫: 金币+0.5, 给个红包,谢谢回帖
Yolanda7: 金币+6, 谢谢啦 2012-06-25 20:12:51
小木虫: 金币+0.5, 给个红包,谢谢回帖
Yolanda7: 金币+6, 谢谢啦 2012-06-25 20:12:51
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搜索ICSD,有下面几个结果,给你参考: *data for ICSD #86253 CopyRight ?2008 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. Coll Code 86253 Rec Date 1999/11/30 Mod Date 2003/10/01 Chem Name Silicon Carbide - 2h Structured Si C Sum C1 Si1 ANX AX D(calc) 3.21 Title Structure parameters and polarity of the wurtzite type compounds (Si C)-2H and Zn O Author(s) Schulz, H.;Thiemann, K.H. Reference Solid State Communications (1979), 32, 783-785 Phase Transition (1992), 38, 127-220 Unit Cell 3.079(1) 3.079(1) 5.053(1) 90. 90. 120. Vol 41.49 Z 2 Space Group P 63 m c SG Number 186 Cryst Sys hexagonal Pearson hP4 Wyckoff b2 R Value .032 Red Cell P 3.079 3.079 5.053 90 90 120 41.486 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Stable above 2270 K (2nd ref. , Tomaszewski) The structure has been assigned a PDF number (calculated powder diffraction data): 01-089-1396 The structure has been assigned a PDF number (experimental powder diffraction data): 29-1130 Structure type : ZnS(2H) X-ray diffraction from single crystal Atom # OX SITE x y z SOF H Si 1 +4 2 b 0.3333 0.6667 0 1. 0 C 1 -4 2 b 0.3333 0.6667 0.3760(4) 1. 0 Lbl Type U11 U22 U33 U12 U13 U23 Si1 Si4+ 0.0036(2) 0.0036(2) 0.0037(2) 0.0018(1) 0 0 C1 C4- 0.0038(5) 0.0038(5) 0.0036(7) 0.0019(3) 0 0 *end for ICSD #86253 *data for ICSD #42855 CopyRight ?2008 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. Coll Code 42855 Rec Date 2000/07/15 Mod Date 2003/10/01 Chem Name Silicon Carbide (1/1) Structured Si C Sum C1 Si1 ANX NO Min Name Moissanite 2H D(calc) 3.24 Title A review of the structure of silicon carbide Author(s) Shaffer, P.T.B. Reference Acta Crystallographica B (24,1968-38,1982) (1969), 25, 477-488 Kristallografiya (1965), 10, 418-418 Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) (1959), 111, 350-361 Phase Transition (1992), 38, 127-220 Unit Cell 3.073 3.073 5.028 90. 90. 120. Vol 41.12 Z 2 Space Group P 63 m c SG Number 186 Cryst Sys hexagonal Pearson hP4 Wyckoff b2 Red Cell P 3.073 3.073 5.028 90 90 120 41.12 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Zhdanov-symbol: (1 1) Cell from 3rd reference: 3.076. 5.048, cf. 24261 Stable above 2270 K (4th ref. , Tomaszewski) Compound with mineral name: Moissanite 2H The structure has been assigned a PDF number (calculated powder diffraction data): 01-089-2213 The structure has been assigned a PDF number (experimental powder diffraction data): 29-1130 Polytype structure 2H Structure type : ZnS(2H) 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 Si 1 +0 2 b 0.3333 0.6667 0 1. 0 C 1 +0 2 b 0.3333 0.6667 0.375 1. 0 *end for ICSD #42855 *data for ICSD #41487 CopyRight ?2008 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. Coll Code 41487 Rec Date 2002/04/01 Mod Date 2003/10/01 Chem Name Silicon Carbide (1/1) Structured Si C Sum C1 Si1 ANX NO Min Name Moissanite 2H D(calc) 3.22 Title Electronic, optical, and structural properties of some wurtzite crystals Author(s) Xu, Y.-N.;Ching, W.Y. Reference Physical Review, Serie 3. B - Condensed Matter (18,1978-) (1993), 48, 4335-4351 Applied Physics Letters (1978), 33, 319-319 Phase Transition (1992), 38, 127-220 Unit Cell 3.076 3.076 5.048 90. 90. 120. Vol 41.36 Z 2 Space Group P 63 m c SG Number 186 Cryst Sys hexagonal Pearson hP4 Wyckoff b2 Red Cell P 3.076 3.076 5.048 90 90 120 41.364 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Wurtzite-type, cf. 24261 Stable above 2270 K (3rd ref. , Tomaszewski) Compound with mineral name: Moissanite 2H The structure has been assigned a PDF number (calculated powder diffraction data): 01-070-2550 The structure has been assigned a PDF number (experimental powder diffraction data): 29-1130 Structure type : ZnS(2H) 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 Si 1 +0 2 b -.3333 -.6667 0 1. 0 C 1 +0 2 b -.3333 -.6667 0.375 1. 0 *end for ICSD #41487 *data for ICSD #24261 CopyRight ?2008 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. Coll Code 24261 Rec Date 1980/01/01 Mod Date 2007/08/01 Chem Name Silicon Carbide - 2h Structured Si C Sum C1 Si1 ANX AX Min Name Moissanite 2H D(calc) 3.22 Title Synthesis and crystallography of the wurtzite form of silicon carbide Author(s) Adamsky, R.F.;Merz, K.M. Reference Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) (1959), 111, 350-361 Acta Crystallographica B (24,1968-38,1982) (1969), 25, 477-488 Unit Cell 3.0763(10) 3.0763(3) 5.048(1) 90. 90. 120. Vol 41.37 Z 2 Space Group P 63 m c SG Number 186 Cryst Sys hexagonal Pearson hP4 Wyckoff b2 R Value .118 Red Cell P 3.076 3.076 5.048 90 90 120 41.372 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Zhdanov-symbol: (1 1) Coordinates shifted by 2/3 1/3 0 to fit space group Compound with mineral name: Moissanite 2H The structure has been assigned a PDF number (calculated powder diffraction data): 01-073-1749 The structure has been assigned a PDF number (experimental powder diffraction data): 29-1130 Polytype structure 2H Structure type : ZnS(2H) X-ray diffraction from single crystal At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Si 1 +4 2 b 0.6667 0.3333 0 1. 0 C 1 -4 2 b 0.6667 0.3333 0.375 1. 0 |
3楼2012-06-19 14:44:04












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