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 1008403 _database_code_amcsd 0016312 CELL PARAMETERS: 3.8102 3.8791 11.6445 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 172.107 Density (g/cm3): 6.413 MAX. ABS. INTENSITY / VOLUME**2: 2.276649023 RIR: 0.116 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.59 100.00 11.6445 0 0 1 2 15.22 31.39 5.8222 0 0 2 2 22.91 7.82 3.8815 0 0 3 2 22.93 10.43 3.8791 0 1 0 2 23.35 5.59 3.8102 1 0 0 2 24.18 1.82 3.6803 0 1 1 4 27.63 3.84 3.2282 0 1 2 4 27.99 4.11 3.1882 1 0 2 4 32.64 47.62 2.7438 0 1 3 4 32.94 43.90 2.7191 1 0 3 4 32.95 44.11 2.7183 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.