STRUCTURE AND PROPERTIES OF DYSPROSIUM TITANATE POWDER PRODUCED BY THE MECHANOCHEMICAL METHOD

The paper studies the structure and basic physical and chemical properties of titanate dysprosium powders produced by mechanochemical synthesis from the low-temperature modification of titanium oxide and modification of dysprosium oxide using X-ray diffraction methods (XRD), scanning electron microscopy, Raman spectroscopy (Raman spectra), transmission electron microscopy, and chemical analyz. Based on XRD it was found that complete conversion of initial oxides into X-ray amorphous dysprosium titanate (Dy₂TiO₅) occurs during mechanical treatment of the mixture for 30–60 min. Microelectron-diffraction pattern of Dy₂TiO₅ powders produced by mechanical synthesis has a ring-shaped structure with a certain amount of crystalline phase inclusions, which is typical for an X-ray amorphous phase. Dysprosium titanate powder produced by the induction melting method has a regular cubical lattice with a parameter 3,4 Å.

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