TY  - JOUR
AU  - Harouna-Mayer, Sani
AU  - Tao, Songsheng
AU  - Gong, ZiZhou
AU  - von Zimmermann, Martin
AU  - Koziej, Dorota
AU  - Dippel, Ann-Christin
AU  - Billinge, Simon J. L..
TI  - Real-space texture and pole-figure analysis using the 3D pair distribution function on a platinum thin film
JO  - IUCrJ
VL  - 9
IS  - 5
SN  - 2052-2525
CY  - Chester
M1  - PUBDB-2022-06641
SP  - 594 - 603
PY  - 2022
AB  - An approach is described for studying texture in nanostructured materials. The approach implements the real-space texture pair distribution function (PDF), txPDF, laid out by Gong </td><td width="150">
AB  -  Billinge (2018[Gong, Z. </td><td width="150">
AB  -  Billinge, S. J. L. (2018). arXiv:1805.10342 [cond-mat].]). arXiv:1805.10342 [cond-mat]. It is demonstrated on a fiber-textured polycrystalline Pt thin film. The approach uses 3D PDF methods to reconstruct the orientation distribution function of the powder crystallites from a set of diffraction patterns, taken at different tilt angles of the substrate with respect to the incident beam, directly from the 3D PDF of the sample. A real-space equivalent of the reciprocal-space pole figure is defined in terms of interatomic vectors in the PDF and computed for various interatomic vectors in the Pt film. Furthermore, it is shown how a valid isotropic PDF may be obtained from a weighted average over the tilt series, including the measurement conditions for the best approximant to the isotropic PDF from a single exposure, which for the case of the fiber-textured film was in a nearly grazing incidence orientation of ∼10°. Finally, an open-source Python software package, FouriGUI, is described that may be used to help in studies of texture from 3D reciprocal-space data, and indeed for Fourier transforming and visualizing 3D PDF data in general.
LB  - PUB:(DE-HGF)16
C6  - 36071809
UR  - <Go to ISI:>//WOS:000852551800009
DO  - DOI:10.1107/S2052252522006674
UR  - https://bib-pubdb1.desy.de/record/485339
ER  -