Nanocomposites based on niobium, tantalum, and rare-earth elements: low-temperature synthesis and properties
Perspective to synthesize europium and terbium polytantalates MTaxOy, where M - Eu and Tb, x - 7, y - 19, x - 5, y -14; x - 3, y - 9 as well as europium polyniobates EuNb3O9 and EuNb5O14 by the low-temperature extractionpyrolytic method was shown. The luminescent properties of the compounds were estimated according to the excitation and luminescence spectra at 300 K. The dependence of the luminescent features of the rare-earth polytantalates and polyniobates on the temperature and duration of pyrolysis of their precursors was established.