Fabrication of Nanodispersed Powder of Dysprosium Hafnate Dy2HfO5 by Mechanochemical Method

Abstract Dysprosium hafnate Dy2HfO5 powders are prepared through mechanochemical synthesis from hafnium and dysprosium oxides. The structure and main physicochemical characteristics are studied using XRD, scanning electron spectroscopy, Raman spectroscopy (CS spectra), TEM, and chemical analysis. XRD and analysis of CS spectra shows that full transformation of initial oxides into single-phase nanodispersed dysprosium hafnate (Dy2HfO5) occurs during mechanical treatment of the mixture for 40 min. Raman spectrometry of the dysprosium hafnate powder prepared through mechanosynthesis shows the absence of unreacted hafnium and dysprosium oxides and the formation of single-phase dysprosium hafnate.