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Figure 2
The same family of lattice planes for a C-centred unit cell. Planes shown in orange do not exist in a primitive unit cell. If the same Miller indices, (301), are used, then these planes would correspond to half-integer values of n in equation (2)[link] and the one leading to n = 1 is not the first plane of the family but the second one, contrary to the definition of Miller indices. Accordingly, from bottom to top of the figure, the planes would correspond to n = 0, [\textstyle{1 \over 2}], 1, [\textstyle{3 \over 2}], 2, [\textstyle{5 \over 2}], 3, [\textstyle{7 \over 2}], 4 in equation (2)[link]. By adopting the correct non-relatively prime indices (602), the first plane of the family does correspond again to n = 1 in equation (2)[link]; from bottom to top of the figure, the planes correspond now to n = 0, 1, 2, 3, 4, 5, 6, 7, 8. Figures drawn with VESTA (Momma & Izumi, 2011BB2).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 50| Part 3| June 2017| Pages 978-979
https://doi.org/10.1107/S1600576717006306
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