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*data for   ICSD #67782
Coll Code   67782
Rec  Date   1994/06/30
Mod  Date   2004/10/01
Chem Name   Gallium Nitride
Structured  Ga N
Sum         Ga1 N1
ANX         AX
D(calc)     6.69
Title       Zinc-blende-Wurtzite polytypism in semiconductors
Author(s)   Yeh, C.;Lu, Z.W.;Froyen, S.;Zunger, A.
Reference   Physical Review, Serie 3. B - Condensed Matter (18,1978-)
            (1992), 46(16), 10086-10097
Unit Cell   4.364 4.364 4.364 90. 90. 90.
Vol         83.11
Z           4
Space Group F -4 3 m
SG Number   216
Cryst Sys   cubic
Pearson     cF8
Wyckoff     c a
Red Cell    F  3.085 3.085 3.085 60 60 60 20.778
Trans Red   0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500
Comments    PDF 52-791
            The structure has been assigned a PDF number: 52-791
            Structure calculated theoretically
            Structure type : ZnS(cF8)
            No R value given in the paper.
            At least one temperature factor missing in the paper.
Atom  #   OX   SITE      x           y           z           SOF      H
Ga   1  +3    4 a   0           0           0              1.         0   
N    2  -3    4 c   0.25        0.25        0.25           1.         0   
*end for    ICSD #67782
2Â¥2008-07-11 12:33:51
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huahua1216

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*data for   ICSD #34236
Coll Code   34236
Rec  Date   1980/01/01
Mod  Date   2005/10/01
Chem Name   Aluminium Nitride
Structured  Al N
Sum         Al1 N1
ANX         AX
D(calc)     3.26
Title       Study of the wurtzite-type binary compounds. I. Structures of
            aluminum nitride and beryllium oxide
Author(s)   Jeffrey, G.A.;Parry, G.S.;Mozzi, R.L.
Reference   Journal of Chemical Physics
            (1956), 25, 1024-1031
            Journal of Chemical Physics
            (1955), 23, 406-406
Unit Cell   3.111 3.111 4.978 90. 90. 120.
Vol         41.72
Z           2
Space Group P 63 m c
SG Number   186
Cryst Sys   hexagonal
Pearson     hP4
Wyckoff     b2
R Value     .058
Red Cell    P  3.111 3.111 4.978 90 90 120 41.724
Trans Red   1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000
Comments    z(N) in 2nd reference: .385, R=0.026
            The structure has been assigned a PDF number: 25-1133
            Structure type : ZnS(2H)
            X-ray diffraction (powder)
Atom  #   OX   SITE      x           y           z           SOF      H        ITF(B)   
Al   1  +3    2 b   0.3333      0.6667      0              1.         0            0.26
N    1  -3    2 b   0.3333      0.6667      0.388          1.         0            0.79
*end for    ICSD #34236
3Â¥2008-07-11 12:34:25
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