Further discussion on the space group of spinel
- 7 December 1975
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 8 (23) , L541-L543
- https://doi.org/10.1088/0022-3719/8/23/002
Abstract
Electron-diffraction evidence that spinel has a lower space group than Fd3m is reviewed, and it is reaffirmed that the presence of (200), (420), etc reflections in (001) zone axis diffraction patterns are not due to multiple scattering or other experimental difficulties, but support our earlier conclusions. Structure factors for certain weak reflections of the most likely space group, F43m, are calculated, and it is concluded that electron diffraction is a more suitable technique for their detection than neutron diffraction. Furthermore, the departure from Fd3m symmetry appears to be greater for MgFe2O4 than for MgAl2O4.Keywords
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