Information card for entry 2107468

Structure parameters

• Formula: Ca2 Co O7 Si2
• Calculated formula: Ca2 Co O7 Si2
• Title of publication: The low-temperature crystal structure of the multiferroic melilite Ca~2~CoSi~2~O~7~
• Authors of publication: Sazonov, Andrew; Hutanu, Vladimir; Meven, Martin; Roth, Georg; Kézsmárki, István; Murakawa, Hiroshi; Tokura, Yoshinori; Náfrádi, Bálint
• Journal of publication: Acta Crystallographica Section B
• Year of publication: 2016
• Journal volume: 72
• Journal issue: 1
• Pages of publication: 126 - 132
• a: 23.52 ± 0.01 Å
• b: 23.52 ± 0.01 Å
• c: 5.03 ± 0.01 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 2783 ± 6 ų
• Cell temperature: 10 K
• Ambient diffraction temperature: 10 K
• Number of distinct elements: 4
• Space group number: 18
• Hermann-Mauguin space group symbol: P 21 21 2
• Hall space group symbol: P 2 2ab
• Residual factor for all reflections: 0.0428
• Residual factor for significantly intense reflections: 0.0428
• Weighted residual factors for significantly intense reflections: 0.0988
• Weighted residual factors for all reflections included in the refinement: 0.0988
• Goodness-of-fit parameter for all reflections included in the refinement: 3.17
• Diffraction radiation wavelength: 1.1695 Å
• Diffraction radiation type: neutron
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes