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 1008389 _database_code_amcsd 0016298 CELL PARAMETERS: 3.8115 3.8795 11.6512 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 172.283 Density (g/cm3): 6.406 MAX. ABS. INTENSITY / VOLUME**2: 1.958541602 RIR: 0.100 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.59 100.00 11.6512 0 0 1 2 15.21 23.05 5.8256 0 0 2 2 22.90 4.94 3.8837 0 0 3 2 22.92 10.99 3.8795 0 1 0 2 23.34 3.82 3.8115 1 0 0 2 24.18 3.19 3.6808 0 1 1 4 27.63 2.17 3.2290 0 1 2 4 27.97 4.11 3.1895 1 0 2 4 32.62 29.79 2.7447 0 1 3 4 32.93 29.00 2.7203 1 0 3 4 32.94 26.99 2.7189 1 1 0 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.