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 1008401 _database_code_amcsd 0016310 CELL PARAMETERS: 3.8097 3.8788 11.6409 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 172.018 Density (g/cm3): 6.416 MAX. ABS. INTENSITY / VOLUME**2: 2.374582664 RIR: 0.121 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.59 75.18 11.6409 0 0 1 2 15.22 68.25 5.8204 0 0 2 2 22.92 27.85 3.8803 0 0 3 2 22.93 42.92 3.8788 0 1 0 2 23.35 24.59 3.8097 1 0 0 2 24.19 15.66 3.6799 0 1 1 4 24.59 10.08 3.6207 1 0 1 4 27.64 15.40 3.2277 0 1 2 4 27.99 17.55 3.1876 1 0 2 4 30.72 1.95 2.9102 0 0 4 2 32.64 100.00 2.7433 0 1 3 4 32.95 96.10 2.7185 1 0 3 4 32.95 96.17 2.7180 1 1 0 4 36.48 2.43 2.4627 1 1 2 8 38.67 1.61 2.3282 0 0 5 2 38.68 1.75 2.3279 0 1 4 4 38.94 1.67 2.3127 1 0 4 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.