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 1008398
      _database_code_amcsd 0016307

      CELL PARAMETERS:    3.8091   3.8788  11.6369   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    171.932
      Density (g/cm3):      6.419
      MAX. ABS. INTENSITY / VOLUME**2:      6.496162522    
      RIR:      0.330
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.60         34.58       11.6369    0   0   1         2
                15.23         26.87        5.8184    0   0   2         2
                22.93          8.77        3.8790    0   0   3         2
                22.93         11.93        3.8788    0   1   0         2
                23.35          6.15        3.8091    1   0   0         2
                24.19          5.80        3.6798    0   1   1         4
                24.59          4.48        3.6201    1   0   1         4
                27.64          4.77        3.2274    0   1   2         4
                28.00          5.26        3.1869    1   0   2         4
                30.73          1.47        2.9092    0   0   4         2
                32.65         51.11        2.7428    0   1   3         4
                32.96         49.26        2.7178    1   0   3         4
                32.96         50.74        2.7177    1   1   0         4
                36.49          1.01        2.4624    1   1   2         8
                38.69          1.58        2.3273    0   1   4         4
                38.96          1.58        2.3120    1   0   4         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.