Information card for entry 1008857

Structure parameters

• Chemical name: Yttrium barium copper oxide (1/2/2.8/7)
• Formula: Ba2 Cu2.78 O7 Y
• Calculated formula: Ba2 Cu2.787 O7 Y
• Title of publication: Evidence by x-ray diffraction for two apical oxygen sites in a copper- deficient Y Ba2 Cu2.78 O7 crystal
• Authors of publication: Bordet, P; Chaillout, C; Fournier, T; Marezio, M; Kaldis, E; Karpinski, J; Jilek, E
• Journal of publication: Physical Review, Serie 3. B - Condensed Matter (18,1978-)
• Year of publication: 1993
• Journal volume: 47
• Journal issue: 6
• Pages of publication: 3465 - 3468
• a: 3.8764 ± 0.0004 Å
• b: 3.8764 ± 0.0004 Å
• c: 11.624 ± 0.001 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 174.7 ų
• Number of distinct elements: 4
• Space group number: 123
• Hermann-Mauguin space group symbol: P 4/m m m
• Hall space group symbol: -P 4 2
• Residual factor for all reflections: 0.047
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No