TY  - JOUR
AU  - Fabrykiewicz, Piotr
TI  - A note on the relation of anisotropic peak broadening with lattice symmetry in powder diffraction
JO  - Acta crystallographica / Section A
VL  - 81
IS  - 3
SN  - 0108-7673
CY  - Chester
PB  - IUCr/Wiley
M1  - FZJ-2025-05362
SP  - 245 - 247
PY  - 2025
AB  - A bridge is established between the Gregorkiewitz & Boschetti [Acta Cryst. (2024), A80, 439–445] and Stephens [J. Appl. Cryst. (1999), 32, 281–289] formalisms of anisotropic peak broadening in powder diffraction. The paper by Gregorkiewitz & Boschetti presented formulas describing position shifts of low symmetry peaks due to different lattice relaxation schemes. Anisotropic peak broadening caused by lattice relaxation can be parameterized by the variance of slightly dispersed peaks’ positions. The calculated variances are compared with formulas from the widely used phenomenological model of anisotropic peak broadening by Stephens. Specific relations between anisotropic peak broadening parameters can be a hint of a possible unresolved peak splitting due to lattice symmetry lowering.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1107/S2053273325003134
UR  - https://juser.fz-juelich.de/record/1049558
ER  -