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Extended Data Fig. 2 | Diffraction peaks arising from ribbon superstructure
ordering in Na0.6[Li0.2Mn0.8]O 2. a, PXRD data for pristine Na0.6[Li0.2Mn0.8]O 2
indexed using the P 63 /mmc space group which does not account for
superstructure peaks arising from in-plane ordering in the TM layer.
b, Superstructure region of PXRD compared with computer generated
diffraction patterns. Model crystal structures were prepared with different
alignments of ribbon ordered layers. The only structure to successfully match
all the peaks is the P 21 /c space group. Structures are all viewed along the [010]
direction.