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四方相鈦酸鋇
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木蟲(chóng) (正式寫(xiě)手)
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*data for ICSD #15453 Coll Code 15453 Rec Date 1980/01/01 Mod Date 2007/08/01 Chem Name Barium Titanate Structured Ba (Ti O3) Sum Ba1 O3 Ti1 ANX ABX3 D(calc) 6.02 Title An X-ray diffraction study of tetragonal barium titanate Author(s) Evans, H.T.jr. Reference Acta Crystallographica (1,1948-23,1967) (1961), 14, 1019-1026 Phase Transition (1992), 38, 127-220 Unit Cell 3.9945 3.9945 4.0335 90. 90. 90. Vol 64.36 Z 1 Space Group P 4 m m SG Number 99 Cryst Sys tetragonal Pearson tP5 Wyckoff c b2 a R Value .0372 Red Cell P 3.994 3.994 4.033 90 90 90 64.359 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Stable from 273 to 403 K (2nd ref., Tomaszewski), from 403 to 1733 K cubic (Pm3-m) The structure has been assigned a PDF number (calculated powder diffraction data): 01-072-0138 The structure has been assigned a PDF number (experimental powder diffraction data): 5-626 Structure type : PbTiO3 X-ray diffraction from single crystal Atom # OX SITE x y z SOF H Ba 1 +2 1 a 0 0 0 1. 0 Ti 1 +4 1 b 0.5 0.5 0.512 1. 0 O 1 -2 1 b 0.5 0.5 -.026 1. 0 O 2 -2 2 c 0 0.5 0.5 1. 0 Lbl Type Beta11 Beta22 Beta33 Beta12 Beta13 Beta23 Ba1 Ba2+ 0.27 0.27 0.28 0 0 0 Ti1 Ti4+ 0.46 0.46 0.3 0 0 0 O1 O2- 0.9 0.9 0.5 0 0 0 O2 O2- 0.6 0.9 0.9 0 0 0 *end for ICSD #15453 |
木蟲(chóng) (正式寫(xiě)手)
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*data for ICSD #27970 Coll Code 27970 Rec Date 1980/01/01 Mod Date 1985/01/15 Chem Name Barium Titanate Structured Ba Ti O3 Sum Ba1 O3 Ti1 ANX ABX3 D(calc) 6.07 Title On Phase Transformation of Ba Ti O3 Author(s) Miyake, S.;Ueda, R. Reference Journal of the Physical Society of Japan (1947), 2, 93-97 Unit Cell 3.996 3.996 3.996 90. 90. 90. Vol 63.81 Z 1 Space Group P m -3 m SG Number 221 Cryst Sys cubic Pearson cP5 Wyckoff c b a Red Cell P 3.996 3.996 3.996 90 90 90 63.808 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments The structure has been assigned a PDF number (calculated powder diffraction data): 01-073-6278 Temperature in Kelvin: 393 Structure type : CaTiO3 X-ray diffraction (powder) No R value given in the paper. At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H Ba 1 +2 1 a 0 0 0 1. 0 Ti 1 +4 1 b 0.5 0.5 0.5 1. 0 O 1 -2 3 c 0 0.5 0.5 1. 0 *end for ICSD #27970 |
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