Information card for entry 4124694

Structure parameters

• Formula: Ca2 Mg O7 Si2
• Calculated formula: Ca2 Mg O7 Si2
• Title of publication: Chemical Unit Cosubstitution and Tuning of Photoluminescence in the Ca2(Al1-xMgx)(Al1-xSi1+x)O7:Eu2+ Phosphor
• Authors of publication: Zhiguo Xia; C.-G. Ma; Maxim Molokeev; Quanlin Liu; Karl Rickert; Kenneth Poeppelmeier
• Journal of publication: Journal of the American Chemical Society
• Year of publication: 2015
• Journal volume: 137
• Journal issue: 39
• Pages of publication: 12494 - 12497
• a: 7.83456 ± 0.00019 Å
• b: 7.83456 ± 0.00019 Å
• c: 5.00875 ± 0.00015 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 307.439 ± 0.014 ų
• Cell temperature: 300 K
• Ambient diffraction temperature: 300 K
• Number of distinct elements: 4
• Space group number: 113
• Hermann-Mauguin space group symbol: P -4 21 m
• Hall space group symbol: P -4 2ab
• Residual factor R(I) for significantly intense reflections: 4.02
• Goodness-of-fit parameter for all reflections: 1.163
• Method of determination: powder diffraction
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 1.5406 Å
• Diffraction radiation type: CuKα~1~~2~
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes