X-ray powder diffraction data for potassium erbium fluoride

摘要

X-ray powder diffraction data, unit-cell parameters, and space group for potassium erbium fluoride, K_(0.5)Er_(0.5)F_2, are reported [a = 5.6862(5) A, unit-cell volume V= 183.85 A~3, Z=4, and space group Fm-3m]. Potassium erbium fluoride is isostructural with a large family of fluorides represented by the mineral fluorite CaF_2. All of the measured lines of the title compound were indexed and are consistent with the Fm-3m space group. No detectable impurities were observed.