Information card for entry 1001493

Structure parameters

• Chemical name: Yttrium calcium barium copper iron(III) oxide (0.8/0.2/2/2.8/0.2/7)
• Formula: Ba2 Ca0.24 Cu2.76 Fe0.24 O7.04 Y0.76
• Calculated formula: Ba2 Ca0.24 Cu2.76 Fe0.24 O7.04 Y0.76
• Title of publication: The important role of pyramidal copper layers of the 123-structure in superconductivity. The oxides Ba~2~Y~1-x~Ca~x~Cu~3-x~Fe~x~O~7~ and Ba~2~Y~1-x~Ca~x~Cu~3-x~Fe~x~O~6~
• Authors of publication: Suard, E; Caignaert, V; Maignan, A; Raveau, B
• Journal of publication: Physica C (Amsterdam) (152,1988-)
• Year of publication: 1991
• Journal volume: 182
• Pages of publication: 219 - 227
• a: 3.8637 ± 0.0001 Å
• b: 3.8637 ± 0.0001 Å
• c: 11.6899 ± 0.0004 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 174.5 ų
• Number of distinct elements: 6
• 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: 0.063
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No