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*data for   ICSD #88367
Coll Code   88367
Rec  Date   2001/07/16
Mod  Date   2006/04/01
Chem Name   Tungsten Oxide
Structured  W O3
Sum         O3 W1
ANX         AX3
D(calc)     6.96
Title       Transition to a new tetragonal phase of W O3 : crystal structure and
            distortion parameters
Author(s)   Locherer, K.R.;Swainson, I.P.;Salje, E.K.H.
Reference   Journal of Physics: Condensed Matter
            (1999), 11, 4143-4156
Unit Cell   5.3031(4) 5.3031(4) 3.9348(3) 90. 90. 90.
Vol         110.66
Z           2
Space Group P 4/n m m Z
SG Number   129
Cryst Sys   tetragonal
Pearson     tP8
Wyckoff     d c2
R Value     .033
Red Cell    P  3.934 5.303 5.303 90 90 90 110.658
Trans Red   0.000 0.000 1.000 / 1.000 0.000 0.000 / 0.000 1.000 0.000
Comments    Stable from 1183 to 1503 K (2nd ref., Tomaszewski), 1013-
            1183 K: P4/ncc
            M.p. 1740 K
            Neutron diffraction (powder)
            The structure has been assigned a PDF number (calculated
            powder diffraction data): 01-089-8053
            The structure has been assigned a PDF number (experimental
            powder diffraction data): 18-1417
            Rietveld profile refinement applied
            Temperature in Kelvin: 1200
Atom  #   OX   SITE      x           y           z           SOF      H
W    1  +6    2 c   0.25        0.25        -.0664(8)      1.         0   
O    1  -2    2 c   0.25        0.25        0.4940(9)      1.         0   
O    2  -2    4 d   0           0           0              1.         0   
Lbl  Type      U11         U22         U33         U12         U13         U23
W1   W6+   0.015(1)    0.015(1)    0.015(2)    0           0           0           
O1   O2-   0.057(2)    0.057(2)    0.021(2)    0           0           0           
O2   O2-   0.0340(9)   0.0340(9)   0.062(2)    -.022(1)    0.001(1)    0.001(1)   
*end for    ICSD #88367
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