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*data for   ICSD #30267
Coll Code   30267
Rec  Date   1980/01/01
Chem Name   Aluminium Oxide - Gamma
Structured  (Al2 O3)1.333
Sum         Al2.666 O3.999
ANX         A3X4
D(calc)     3.66
Title       The Structure of the electrolytical Oxide Layer on Aluminium
Author(s)   Verwey, E.J.W.
Reference   Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977)
            (1935), 91, 317-320
Unit Cell   3.95 3.95 3.95 90. 90. 90.
Vol         61.63
Z           1
Space Group F m -3 m
SG Number   225
Cryst Sys   cubic
Pearson     cF7
Wyckoff     c b a
Red Cell    F  2.793 2.793 2.793 60 60 60 15.407
Trans Red   0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500
Comments    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): 01-075-0921
            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
O    1  -2    4 a   0           0           0              1.         0   
Al   1  +3    4 b   0.5         0.5         0.5            0.4665     0   
Al   2  +3    8 c   0.25        0.25        0.25           0.0999     0   
*end for    ICSD #30267

Al2O3-gama.jpg

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