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*data for ICSD #43951 Coll Code 43951 Rec Date 2000/07/15 Chem Name Gallium Arsenide (1/1) - Hp Structured Ga As Sum As1 Ga1 ANX AX D(calc) 7.65 Title Structural phase transitions in Ga As to 108 GPa Author(s) Weir, S.T.;Vohra, J.K.;Vanderborgh, C.A.;Ruoff, A.L. Reference Physical Review, Serie 3. B - Condensed Matter (18,1978-) (1989), 39, 1280-1285 Unit Cell 2.482(6) 4.83(1) 2.618(6) 90. 90. 90. Vol 31.38 Z 1 Space Group P m m 2 SG Number 25 Cryst Sys orthorhombic Pearson oP2 Wyckoff b a R Value .177 Red Cell P 2.482 2.618 4.83 89.999 89.999 90 31.385 Trans Red 1.000 0.000 0.000 / 0.000 0.000 1.000 / 0.000 -1.000 0.000 Comments Stable form between 16.6 and 24 GPa The structure has been assigned a PDF number (calculated powder diffraction data): 01-089-3291 Pressure in MPa: 22900 X-ray diffraction (powder) At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Ga 1 +3 1 b 0 0.5 0.35 1. 0 As 1 -3 1 a 0 0 0 1. 0 *end for ICSD #43951 |
7Â¥2009-09-09 09:00:50
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2Â¥2009-09-08 22:59:15
you can find them in Handbook of Chemistry and physics
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Handbook of Chemistry and physics or III-V compound semiconductor from http://en.wikipedia.org/wiki/Gallium_arsenide good luck |
3Â¥2009-09-08 23:36:28
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*data for ICSD #107946 Coll Code 107946 Rec Date 2006/10/01 Chem Name Gallium Arsenide Structured Ga As Sum As1 Ga1 ANX AX D(calc) 5.32 Title Thermal vibrations and bonding in Ga As: an extended-face crystal study Author(s) Stevenson, A.W. Reference Acta Crystallographica A (39,1983-) (1994), 50, 621-632 Unit Cell 5.652(1) 5.652(1) 5.652(1) 90. 90. 90. Vol 180.55 Z 4 Space Group F -4 3 m SG Number 216 Cryst Sys cubic Pearson cF8 Wyckoff c a R Value .007 Red Cell F 3.996 3.996 3.996 60 60 60 45.138 Trans Red 0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500 Comments Temperature in Kelvin: 296 Structure type : ZnS(cF8) X-ray diffraction from single crystal Atom # OX SITE x y z SOF H Ga 1 +3 4 a 0 0 0 1. 0 As 1 -3 4 c 0.25 0.25 0.25 1. 0 *end for ICSD #107946 |
4Â¥2009-09-09 08:59:26














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