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Figure 12
Energy variation of the simulated intensities (lines) and corresponding experiment (circles) of the ([\bar4, 2, 1/2]) reflection in the thin film B. The three simulated curves result from the P2/c model of displacements (a) without any charge disproportion (solid red line), (b) with charge disproportions on the octahedral B3–B4 (0.2 e) atoms included (dotted green line) and (c) with the charge disproportion on the octahedral B3–B4 atoms reduced to half this value (dashed blue line).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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