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Figure 5
In situ 2D Raman mapping of polycrystalline powders after 90 min of milling (β → α → β). The horizontal and vertical coordinates represent the position of the micro-region characterized by Raman spectra, and the scale is the ratio of the peak intensity between 782 and 762 cm−1. Red and blue represent the pure β and α forms, respectively.

IUCrJ
Volume 8| Part 4| July 2021| Pages 584-594
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521004401