Biography

Oleg V'yunov was born on 12 May 1968 in Kyiv, Ukraine. After completing secondary education, he enrolled at the Kyiv Polytechnic Institute (now the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"), Faculty of Electronic Engineering, where he studied from 1985 to 1993. During this period, he also served for two years in the Soviet Armed Forces, attaining the rank of sergeant.

From 1994 to 1997, he pursued PhD studies at the V.I. Vernadsky Institute of General and Inorganic Chemistry in Kyiv. In 1998, he successfully defended his Ph.D. thesis entitled “Synthesis, Structure, and Properties of Aliovalent-Substituted Titanium Oxides with Perovskite Structure.” Between 1998 and 2000, he worked as a research scientist at the V.I. Vernadsky Institute of General and Inorganic Chemistry, and since 2000, he has held the position of senior scientist at the same institution.

His professional experience includes several research visits to France and China, where he acquired advanced expertise in instrumental techniques used in solid-state chemistry. He is the co-author of more than 100 peer-reviewed publications in international scientific journals.

His scientific interests are primarily focused on chemical methods for synthesizing powders of complex oxide systems and solid solutions, as well as the development of ceramics and thin films based on these materials. His research aims to establish predictive models and deepen the understanding of the interrelation between structural, electrical, and physical properties of functional oxide materials.

Grants and diplomas

1. 1996. Grant of the State Committee of Ukraine for Science, Technology, and Industrial Policy for young scientists (№ 103/96 from 11.06.96).
2. 1997. Grant of the President of Ukraine for young scientists (№ 287 from 11.09.96).
3. 1998. Grant of the International Association of Academies of Sciences and the National Academy of Sciences of Ukraine (№ 175 from 27.05.98).
4. 2013. Jubilee diploma of the National Academy of Sciences of Ukraine for a significant personal contribution to the development and promotion of the ideas of V.I. Vernadsky.
5. 2018. Jubilee diploma of the National Academy of Sciences of Ukraine for achievements in solving the most important scientific and scientific-technical problems, implementation of developments in the national economy and practice of socio-cultural construction, training and education, active participation in public life and dedication to conscientious work.

Publications for the last 10 years in professional editions included in the first (Q1) or second (Q2) quartiles

1. Belous, A.; Kobylianska, S.; V’yunov, O.; Torchyniuk, P.; Yukhymchuk, V.; Hreshchuk, O., Effect of non-stoichiometry of initial reagents on morphological and structural properties of perovskites CH₃NH₃PbI₃. Nanoscale Research Letters 2019, 14 (4), 1-9.
2. V’yunov, O.; Reshytko, B.; Belous, A.; Kovalenko, L., Contribution of nanointerfaces to colossal permittivity of doped Ba(Ti,Sn)O₃ ceramics. Applied Nanoscience 2018, 9 (5), 767-773.
3. Belous, A. G.; V’yunov, O. I.; Kobylianska, S. D.; Kovalenko, L. L., Impedance analysis of thin films of organic-inorganic perovskites CH₃NH₃PbI₃ with control of microstructure. Nanoscale Research Letters 2018, 13 (98), 1-7.
4. Daugėla, S.; Kežionis, A.; Šalkus, T.; Orliukas, A. F.; Belous, A. G.; V'yunov, O. I.; Kobylianska, S. D.; Vasylechko, L. O., Peculiarities of ionic conduction in Li_0.5−yNa_yLa_0.5Nb₂O₆ system at high temperatures. Solid State Ionics 2017, 300, 86-90.
5. Plutenko, T. A.; V’yunov, O. I.; Belous, A. G.; Yanchevskii, O. Z., Semi-oxalate synthesis of (1-x)BaTiO₃-xM_0.5Bi_0.5TiO₃ (M = Li, Na, K) PTCR materials. Journal of Advanced Ceramics 2016, 5 (2), 117-125.
6. Kazakevičius, E.; Kežionis, A.; Šalkus, T.; Orliukas, A. F.; V'yunov, O. I.; Kovalenko, L. L.; Belous, A. G., Some aspects of charge transport in Li_0.5-xNa_xLa_0.5TiO₃ (x = 0, 0.25) ceramics. Funct. Mater. Lett. 2015, 8 (6), 1550076-1 – 1550076-5.
7. Jiménez, R.; Díez, V.; Sanz, J.; Kobylianska, S. D.; V'yunov, O. I.; Belous, A. G., Evidence for changes on the lithium conduction dimensionality of Li_0.5−yNa_yLa_0.5Nb₂O₆ (0 ≤ y ≤ 0.5) perovskites. RSC Advances 2015, 5 (35), 27912-27921.
8. Bohnke, O.; Gunes, V.; Kravchyk, K. V.; Belous, A. G.; Yanchevskii, O. Z.; V'yunov, O. I., Ionic and electronic conductivity of 3 mol% Fe₂O₃-substituted cubic yttria-stabilized ZrO₂ (YSZ) and scandia-stabilized ZrO₂ (ScSZ). Solid State Ionics 2014, 262, 517-521.
9. Solovyova, E. D.; Pashkova, E. V.; Ivanitski, V. P.; V′yunov, O. I.; Belous, A. G., Mössbauer and X-ray diffraction study of Co²⁺–Si⁴⁺ substituted M-type barium hexaferrite BaFe_12−2хСо_хSi_хO_19±γ. J. Magn. Magn. Mater. 2013, 330, 72-75.
10. Solopan, S.; V’yunov, O.; Belous, A.; Polek, T.; Tovstolytkin, A., Effect of nanoparticles agglomeration on electrical properties of La_1−xA_xMnO₃ (A = Sr, Ba) nanopowder and ceramic solid solutions. Solid State Sciences 2012, 14 (4), 501-505.
11. Plutenko, T. A.; V'yunov, O. I.; Belous, A. G., Synthesis and electrical characteristics of (1−x)BaTiO₃–xK_0.5Bi_0.5TiO₃ PTCR ceramics. Mater. Chem. Phys. 2012, 136 (1), 167-172.
12. Solopan, S. A.; V’yunov, O. I.; Belous, A. G.; Tovstolytkin, A. I.; Kovalenko, L. L., Magnetoelectric effect in composite structures based on ferroelectric–ferromagnetic perovskites. J. Eur. Ceram. Soc. 2010, 30 (2), 259-263.
13. Domenici, V.; Zupančič, B.; Laguta, V. V.; Belous, A. G.; V’yunov, O. I.; Remškar, M.; Zalar, B. t., PbTiO₃ nanoparticles embedded in a liquid crystalline elastomer matrix: structural and ordering properties. Journal of Physical Chemistry C 2010, 114 (24), 10782-10789.
14. Kravchyk, K. V.; Gomza, Y. P.; Pashkova, O. V.; V’yunov, O. I.; Nesin, S. D.; Belous, A. G., Effect of synthesis conditions on the fractal structure of yttrium-stabilized zirconium dioxide. J. Non-Cryst. Solids 2009, 355 (52), 2557-2561.