Abstract
Several methods can be used to obtain, from powder diffraction patterns,
crystallite size and lattice strain of polycrystalline samples. Some
examples are the Scherrer equation, Williamson-Hall plots,
Warren/Averbach Fourier decomposition, Whole Powder Pattern Modeling,
and Debye function analysis. To apply some of these methods, it is
necessary to remove the contribution of the instrument to the widths of
the diffraction peaks. Nowadays, one of the main samples used for this
purpose is the LaB6 SRM660b commercialized by the National Institute of
Standard Technology; the width of the diffraction peak of this sample is
caused only by the instrumental apparatus. However, this sample can be
expensive for researchers in developing countries. In this work, the
authors present a simple route to obtain micron-sized polycrystalline
CeO2 that have a full width at half maximum comparable with the SRM660b
and therefore it can be used to remove instrumental broadening. (C) 2018
International Centre for Diffraction Data.
Users
Please
log in to take part in the discussion (add own reviews or comments).