Information card for entry 1008391

Structure parameters

• Chemical name: Yttrium barium copper oxide (1/2/3/6.91)
• Formula: Ba2 Cu3 O6.91 Y
• Calculated formula: Ba2 Cu3 O6.91 Y
• Title of publication: A study of the Cu-O chains in the high T~c~ superconductor Y Ba~2~ Cu~3~ O~7~ by high resolution neutron powder diffraction
• Authors of publication: Francois, M; Junod, A; Yvon, K; Hewat, A W; Capponi, J J; Strobel, P; Marezio, M; Fischer, P
• Journal of publication: Solid State Communications
• Year of publication: 1988
• Journal volume: 66
• Pages of publication: 1117 - 1125
• a: 3.8128 ± 0.0001 Å
• b: 3.8802 ± 0.0001 Å
• c: 11.658 ± 0.0003 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 172.5 ų
• Number of distinct elements: 4
• Space group number: 47
• Hermann-Mauguin space group symbol: P m m m
• Hall space group symbol: -P 2 2
• Residual factor for all reflections: 0.0279
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No