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An approach is described for studying texture in nanostructured materials.The approach implements the real space texture PDF, txPDF, laid out in [Gongand Billinge (2018) arXiv:1805.10342 [cond-mat]]. It is demonstrated on a fibertextured polycrystalline Pt thin film. The approach uses 3D PDF methods toreconstruct the orientation distribution function (ODF) of the powdercrystallites from a set of diffraction patterns taken at different tilt anglesof the substrate with respect to the incident beam directly from the 3D PDF ofthe sample. A real space equivalent of the reciprocal space pole figure isdefined in terms of interatomic vectors in the PDF and computed for variousinteratomic vectors in the Pt film. Further, it is shown how a valid isotropicPDF may be obtained from a weighted average over the tilt series, and themeasurement conditions for the best approximant to the isotropic PDF from asingle exposure, which for the case of the fiber textured film was in a nearlygrazing incidence orientation of around 10 degrees. Finally, we describe anopen source Python software package, Fourigui, that may be used to help instudies of texture from 3D reciprocal space data, and indeed for Fouriertransforming and visualizing 3D PDF data in general.

Real space texture and pole figure analysis using the three-dimensional pair distribution function (PDF) on a Platinum thin film