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Due to their optical properties and multitudinous applications in optoelectronic and laser devices, the interest in studying luminescent nanostructured materials is growing. In this work the crystallite size distribution of nanostructured rare-earth doped KY3F10 fluorides were determined as a first step to understand its microstructure behavior when different dopants are introduced. A pure and two RE-doped samples of KY3F10 were analyzed in order to verify the dopant influence in the size distribution of its crystallites. The Warren-Averbach method of X-ray line profile analysis was applied to obtain the areaweighted mean crystallite size. Alternatively, the volume-weighted mean crystallite size was calculated using a Full Profile Fitting method known as Pawley method without reference to a structural model. The results provided by the two methods were used to determine the crystallite size distribution, in order to obtain a more detailed study of the microstructure.

Size-strain analysis in RE-doped KY3F10 fluorides using X-ray line profile analysis