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Figure 9
Shift of the luminescence maximum for 2°AP-β with increasing applied pressure. The formation of a new emission band at about 500 nm above 2.00 GPa suggests an onset of prominent lattice vibrations or structural changes yet to be investigated.

IUCrJ
Volume 11| Part 4| July 2024| Pages 519-527
ISSN: 2052-2525
https://doi.org/10.1107/S2052252524003634