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Figure 6
Distortion mode amplitudes as a function of pressure for A21am phase, showing the rotation, [{\rm X}_{2}^{+}], and tilt, [{\rm X}_{3}^{-}], and polar, Γ[{}_{5}^{-}], modes. Darker and lighter markers indicate a lower and higher uncertainty, respectively. A weighted linear regression was performed based on errors generated through AMPLIMODES with shaded regions showing the confidence interval of one sigma.

Journal logo STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 81| Part 3| June 2025| Pages 318-324
https://doi.org/10.1107/S2052520625002306
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