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 1008413 _database_code_amcsd 0016322 CELL PARAMETERS: 3.8177 3.8836 11.6827 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 173.213 Density (g/cm3): 6.372 MAX. ABS. INTENSITY / VOLUME**2: 2.354862041 RIR: 0.120 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.57 100.00 11.6827 0 0 1 2 15.17 1.64 5.8414 0 0 2 2 32.56 1.30 2.7499 0 1 3 4 32.85 1.10 2.7262 1 0 3 4 32.90 1.07 2.7225 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.