Information card for entry 1000030

Structure parameters

• Chemical name: Yttrium barium copper oxide (1/2/3/6.9)
• Formula: Ba2 Cu3 O6.9 Y
• Calculated formula: Ba2 Cu3 O6.91 Y
• Title of publication: Joint X-ray and neutron refinement of the structure of superconducting YBa~2~Cu~3~O~7-x~: precision structure, anisotropic thermal parameters, strain and cation disorder
• Authors of publication: Williams, A; Kwei, G H; Dreele, R B von; Larson, A C; Raistrick, I D; Bish, D L
• Journal of publication: Physical Review, Serie 3. B - Condensed Matter (18,1978-)
• Year of publication: 1988
• Journal volume: 37
• Pages of publication: 7960 - 7962
• a: 3.8203 ± 0.00008 Å
• b: 3.88548 ± 0.0001 Å
• c: 11.68349 ± 0.00023 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 173.4 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: 0.0524
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No