CrFe
      Bergman G, Shoemaker D P
      Acta Crystallographica 7 (1954) 857-865
      The determination of the crystal structure of the sigma phase
      in the iron-chromium and iron-molybdenum systems
      _database_code_amcsd 0017754

      CELL PARAMETERS:    8.8000   8.8000   4.5440   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    351.887
      Density (g/cm3):      7.632
      MAX. ABS. INTENSITY / VOLUME**2:      65.46057759    
      RIR:      2.793
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.02          2.01        4.0375    1   0   1         8
                37.91          6.75        2.3731    3   1   1        16
                39.67         22.78        2.2720    0   0   2         2
                42.35         90.83        2.1343    4   1   0         8
                42.35          2.62        2.1342    1   1   2         8
                43.64         39.97        2.0742    3   3   0         4
                44.90         34.05        2.0188    2   0   2         8
                46.13         67.03        1.9676    2   1   2        16
                47.04        100.00        1.9318    4   1   1        16
                48.23         48.15        1.8869    3   3   1         8
                49.69         11.29        1.8348    2   2   2         8
                51.96         12.76        1.7599    3   1   2        16
                55.24          2.81        1.6630    3   2   2        16
                56.03          2.93        1.6412    4   3   1        16
                57.09          2.73        1.6134    5   1   1        16
                60.18          1.07        1.5377    5   2   1        16
                67.29          2.41        1.3914    4   3   2        16
                68.24          2.52        1.3743    5   1   2        16
                70.82          1.12        1.3304    6   2   1        16
                71.06          5.00        1.3266    5   2   2        16
                75.65         13.89        1.2571    5   3   2        16
                76.55          5.25        1.2445    5   5   0         4
                77.23         17.05        1.2352    4   1   3        16
                77.46          7.28        1.2322    6   0   2         8
                78.13          8.68        1.2232    3   3   3         8
                78.36          5.70        1.2203    6   1   2        16
                79.03          1.00        1.2116    7   0   1         8
                79.25         12.38        1.2088    7   2   0         8
                79.92          6.61        1.2003    5   5   1         8
                81.04          3.80        1.1866    6   2   2        16
                81.93          3.45        1.1759    5   4   2        16
                82.59          8.29        1.1681    7   2   1        16
                85.47          7.47        1.1360    0   0   4         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.