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 1008393
      _database_code_amcsd 0016302

      CELL PARAMETERS:    3.8143   3.8812  11.6662   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.707
      Density (g/cm3):      6.391
      MAX. ABS. INTENSITY / VOLUME**2:      2.264790193    
      RIR:      0.115
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.58        100.00       11.6662    0   0   1         2
                15.19          4.05        5.8331    0   0   2         2
                22.87          2.43        3.8887    0   0   3         2
                22.91          5.13        3.8812    0   1   0         2
                23.32          1.90        3.8143    1   0   0         2
                32.60          6.75        2.7471    0   1   3         4
                32.89          6.39        2.7231    1   0   3         4
                32.92          5.87        2.7205    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.