Work

The series of scientific publications is devoted to establishment of crystallization features, structurally - phase transformations and properties of new low-size forms of oxide materials (R2O3, (R1-xEux)2O3, Y3Al5O12, R–Lu, Y) as monodispersible nanopowders of the controlled morphology and consolidated наноceramics on their basis. The following results have been obtained: 1. It was concluded that the basic structural-morphological properties of the R2O3 spheres is polycrystalline structure, mesoporosity and stability of spherical morphology. 2. Interval of thermal stability (Т=600-800 ºС) of composite Y2O3-ZnO spheres was determinate. Degree of deformation of ZnO crystalline grate, that is formed on the surfaces of pores of high curvature leads to plate morphology of zincite nanocrystalls. 3. Morphological and phase stability of Y3Al5O12 nanopowders is studied depending on the temperature at consolidation under pressure 8 GPa. It is determinate that the overhead temperature interval of phase stability of compact nanomaterials with the grain size of 40 nm limits to Т= 550 °С. 4. The conditions were determinate of formation of high-dense (≥99%) monophase compact Y3Al5O12 nanomaterials with the grain size of 20÷40 nm prepared by the method of nanopowders consolidation at Р = 8 GPa, Т = 350 ÷450 °С. 5. The method of search of localized vortical objects is offered in two-dimensional ideal hydrodynamics in the class of the generalized functions. Existence of wide class of localized vortical objects is well-proven as exact decisions of equalizations of Euler, in particular point whirlwinds of dipole type, and difficult stationary vortical to singularity with the difficult underlying structure of flow. The series of scientific publications has been realizing during 2006 – beginning (February) 2013 years in Institute for Single Crystals NAS of Ukraine. The series includes 29 publications in scientific editions, which consists of 1 monography, 2 reviews, 7 articles in Ukrainian journals and 17 – in international journals. The total impact-factor of the journals, where works have been published, is 23,61. The works have been cited 57 times based on SCOPUS database data. The results obtained reported on 5 Ukrainian and 16 International conferences and published as 33 abstracts in books of abstracts of scientific conferences. The volume of the works is 143 printed pages.