Ba2 Cu3 O6.91 Y
      Francois M, Junod A, Yvon K, Hewat A, Capponi J, Strobel P, Marezio M, Fischer P
      Solid State Communications 66 (1988) 1117-1125
      A study of the Cu-O chains in the high Tc superconductor Y Ba2 Cu3 O7
      by high resolution neutron powder diffraction
      _cod_database_code 1008406
      _database_code_amcsd 0016315

      CELL PARAMETERS:    3.8121   3.8798  11.6542   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.368
      Density (g/cm3):      6.403
      MAX. ABS. INTENSITY / VOLUME**2:      2.689495792    
      RIR:      0.137
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.59        100.00       11.6542    0   0   1         2
                15.20         12.14        5.8271    0   0   2         2
                22.89          3.41        3.8847    0   0   3         2
                22.92          4.72        3.8798    0   1   0         2
                23.33          2.85        3.8121    1   0   0         2
                32.62         16.81        2.7452    0   1   3         4
                32.92         15.03        2.7209    1   0   3         4
                32.94         14.79        2.7192    1   1   0         4
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.