Beschreibung:
<jats:p>An instrumental technique for DAFS measurements which can provide site-specific information is proposed. The approach uses (i) focusing optics with parabolic mirrors and a double-crystal monochromator, (ii) the Laue and Bragg settings and (iii) data collection by the image-plate Weissenberg method. Six image exposures are recorded per plate at five intrinsic energies and one reference energy. The single-crystal measurements were performed at the Co <jats:italic>K</jats:italic>-absorption edge, and the 200, 220 and 311 reflections of CoO and 511 and 911 reflections of Co<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub> were used for analysis. The regression analysis of χ(<jats:italic>k</jats:italic>), Fourier transforms of <jats:italic>k</jats:italic>
<jats:sup>3</jats:sup>χ(<jats:italic>k</jats:italic>) and back-Fourier filtering have been performed.</jats:p>