Publications by authors named "R V Korolev"
Article Synopsis
- Investigated the phase formation of complex pyrochlores (BiMg(Zn)NiTaO) during solid-phase synthesis, finding that α-BiTaO serves as a precursor, with significant reactions occurring above 850-900 °C.
- Analyzed the effect of magnesium and zinc on synthesis, determining reaction temperatures of 800 °C for magnesium and 750 °C for nickel, alongside changes in the unit cell parameters with temperature variations.
- Found that nickel-magnesium pyrochlores have a porous microstructure with 20% porosity while nickel-zinc variants are dense with under 10% porosity, with optimal conditions for pure phase production established at 1050 °C for 15 hours.
The results of the research of a composite based on multi-walled carbon nanotubes (MWCNTs) decorated with CuO/CuO/Cu nanoparticles deposited by the cupric formate pyrolysis are discussed. The study used a complementary set of methods, including scanning and transmission electron microscopy, X-ray diffractometry, Raman, and ultrasoft X-ray spectroscopy. The investigation results show the good adhesion between the copper nanoparticles coating and the MWCNT surface through the oxygen atom bridge formation between the carbon atoms of the MWCNT outer graphene layer and the oxygen atoms of CuO and CuO oxides.
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