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 1008382 _database_code_amcsd 0016291 CELL PARAMETERS: 3.8091 3.8788 11.6369 90.000 90.000 90.000 SPACE GROUP: Pmmm X-RAY WAVELENGTH: 1.541838 Cell Volume: 171.932 Density (g/cm3): 6.419 MAX. ABS. INTENSITY / VOLUME**2: 6.495809859 RIR: 0.329 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 7.60 32.15 11.6369 0 0 1 2 15.23 24.45 5.8184 0 0 2 2 22.93 7.95 3.8790 0 0 3 2 22.93 12.92 3.8788 0 1 0 2 23.35 5.51 3.8091 1 0 0 2 24.19 6.67 3.6798 0 1 1 4 24.59 3.82 3.6201 1 0 1 4 27.64 4.28 3.2274 0 1 2 4 28.00 5.77 3.1869 1 0 2 4 30.73 1.34 2.9092 0 0 4 2 32.65 50.34 2.7428 0 1 3 4 32.96 49.97 2.7178 1 0 3 4 32.96 50.03 2.7177 1 1 0 4 36.49 1.09 2.4624 1 1 2 8 38.69 1.62 2.3273 0 1 4 4 38.96 1.54 2.3120 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.