Abstract
Nanocrystalline CeO 2 powder has been obtained by thermal decomposition of hydrated ceria prepared from a solution of ammonium cerium(IV) nitrate. Thermal treatments up to 700°C were applied in order to reduce microstrains without substantial increase of grain growth. Crystallite size and size-distribution has been determined by X-ray diffraction profile analysis. The Williamson–Hall plots of the FWHM have revealed pronounced strain anisotropy which has been treated and rationalised in terms of the dislocation model of the mean square strain in the modified Williamson–Hall plots. The dislocation densities were obtained from the modified Warren–Averbach method. A strong decrease of the dislocation density and a slight increase of the crystallite size is observed with increasing annealing temperature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
