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 1008411 _database_code_amcsd 0016320 CELL PARAMETERS: 3.8151 3.8817 11.6699 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 172.820 Density (g/cm3): 6.386 MAX. ABS. INTENSITY / VOLUME**2: 2.567439412 RIR: 0.131 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.58 100.00 11.6699 0 0 1 2 15.18 7.87 5.8349 0 0 2 2 22.86 1.75 3.8900 0 0 3 2 22.91 2.56 3.8817 0 1 0 2 23.32 1.38 3.8151 1 0 0 2 32.59 4.25 2.7477 0 1 3 4 32.88 3.76 2.7238 1 0 3 4 32.92 3.61 2.7209 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.