Open AccessDAFS measurements using the image‐plate Weissenberg method
Author(s) -
Sugioka Naoya,
Matsumoto Kenji,
Tanaka Masahiko,
Mori Takeharu,
Sasaki Satoshi
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049598000594
Subject(s) - monochromator , optics , fourier transform , absorption edge , crystal (programming language) , energy (signal processing) , fourier analysis , fourier optics , physics , crystal optics , image (mathematics) , materials science , computer science , laser , optoelectronics , wavelength , artificial intelligence , quantum mechanics , band gap , programming language
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 K ‐absorption edge, and the 200, 220 and 311 reflections of CoO and 511 and 911 reflections of Co 3 O 4 were used for analysis. The regression analysis of χ( k ), Fourier transforms of k 3 χ( k ) and back‐Fourier filtering have been performed.