A prominent Ukrainian scientist, one of the founders and the 1st dean of the Physico-mathematical Faculty of NTUU “KPI”, member of the Ukrainian National Academy of Sciences Viktor Grygorovych Bariahtar was born on the 9th of August 1930. In 1953 he graduated from Kharkiv State University with honours. In 1959 he obtained the Candidate`s degree and in 1965 he received the degree of Doctor in the field of Physico-mathematical sciences. In 1972 he became a corresponding member of the USSR Academy of Sciences (AS) and in 1978 Viktor Grygorovych became academician.
In 1954-73 V.G. Bariahtar was a scientific associate, the head of the laboratory at Kharkiv Physico-technical institute at the USSR Academy of Sciences; in 1973-82 – the head of the department, deputy director (in charge of scientific work) of the Donetsk Physico-technical institute of the USSR AS; in 1985-89 he occupied the position of the Head of Theorethical Physics Department and the director of Metallophysics institute of the USSR AS. In 1982-89 he was academician-secretary of the Physics and Astronomy Department of the USSR AS, in 1989-94 - Viktor Grygorovych is the vice-president of National Academy of Sciences (NAS) of Ukraine, 1994-98 – the 1st vice-president of NAS of Ukraine. He was the founder and the head of the Theoretical Radiophysics Subdepartment at the Radiophysical Department of the Kyiv National Taras Shevchenko university (1983-86) as well as the the founder and the 1st head of the Mathematical Department (1986-96). Sinse 1995 he had been the director of Magnetics NAS and Ministry of Education and Science (MES) of Ukraine.
Viktor Grygorovych Bariahtar is outstanding Ukrainian scientist in the field of Physics, who succeed to obtain results on world level in the theory of Magnetism of condensed matter, specific conductivity, mechanic properties of solid states, nonlinear phenomena and kinetics of solitons. Together with colleagues and students he created the theory of flux waves spectrum in magnetic materials, developed the microscopic theory of relaxation of magnetic moment in ferrimagnetics (taking the exchange interaction into account), he was among those initiators who studied static and dynamic properties of cylindrical furnace (in lattices of such furnaces there were predicted and then experimentally discovered isostructural phase transformations. V.G. Bariahtar formulated new vision of furnace structures as inhomogeneous medium – it helped to describe the properties of magnetics, ferroelectrics and superconductors those under the process of phase transformations. He was one of the first scientists who started to investigate nonlinear properties of magnetics and used the notion ‘soliton’ in physics of magnetic phenomena. He obtained really essential results inn the field of solitons` cynetics. Widely known V.G. Bariahtar`s works are devoted to the original usage of the pseudopotential concept in the theory of normal metals and superconductors (high-temperature, particulary) and the theory of topological phase transformations.
V.G. Bariahtar took active part in elimination of the consequences of the Chornobyl disaster. He was the head of the Nuclear Policy Committee uder the President of Ukraine, member of the International Coordinating Board of European Community countries (considering the problem of the consequences of the Chornobyl disaster). He was also a participant of international group within a project called “Chornobyl” under International Atomic Energy Agency (IAEA), a member of scintifical board in charge of emergency affairs, a member of Scientific-technical Council (regarding the Chornobyl disaster).
Academician Bariahtar had written more than 500 scientific papers, including 16 monographs on physics and 5 monographs devoted to the Chornobyl concerns. He was a co-author (with A.I. Ahiiezer and S.V. Peletminskyi) while publishing the “Magnetoacoustic Resonance in ferri- , ferro- and antiferromagnetics” (1956).
V.G. Bariahtar delivered the general courses in the Karazin Kharkiv National University, Donetsk University, Taras Shevchenko National University of Kyiv and National Technical University of Ukraine “Kyiv Polytechnic Institute”.
Viktor Grygorovych developed a system of gifted students selection – the 3rd year students are offered to pass the comprehensive examinations for the Candidate's degree, having covered the course of theoretical physics by A. D. Landau and E. M. Lifshytsia and offer a solution for this or that pressing problem (which, in most cases, requires more knowledge than an ordinary 3rd year student has). Such an approach helped Viktor Grygorovych to encourage young people and promtly involve them into scientific work.
There are 23 Doctors of Science, 6 State Prize laureates (E.P. Stefanovsky, A.E. Borovyck, V.O. Popov, V.V. Tarasenko, V.M. Kryvoruchko, D.A. Jablonskyi), two heads of research institutes (corresponding members of National Academy of Sciences of Ukraine V.M. Variuhin and V.F. Klepikov), academician V.P. Semynozhenko, the corresponding member of the Pedagogical Sciences Academy J.I. Gorobets.
V.G. Bariahtar is the founder and the 1st president of Ukrainian Physical Community, member of American and Italian Physical Communities, member of Russian Art and Social Concerns Academy, member of New York Scientific Academy.
The V.G. Bariahtar scientific achievements are awarded with 4 personal prizes of the National Academy of Scienses, 3 State prizes of Ukraine in the field of Science and Technology, 2 international prizes. Another eloquent testimony to the sufficiency of Bariahtar`s achievements is the title of Hero of Ukraine. He is a prominent scholar of Ukraine. Viktor Grygorovych is awarded with Order of the Red Banner of Labour, Lenins Order, Order of Prince Yaroslav the Wise (V degree), the V.I. Vernadsky Gold Medal, the highest award of National Academy of Scienses – the Ushynskyi Gold Medal, Order of Merit (holder of all 3 grades).
In 2003 Viktor Grygorovych Bariahtar was selected as a honoured member of the Pedagogical Sciences Academy, honoured Doctor of Sciences at Taras Shevchenko National University of Kyiv, National Technical University of Ukraine “Kyiv Polytechnic Institute”, Karazin Kharkiv National University, the National Pedagogical Dragomanov University, East Ukraine Volodymyr Dahl National University, Vasyl Stefanyk National University of Precarpathia.
The staff of the Physico-mathematical Faculty and the university administration wish Viktor Grygorovych sound health, inexhaustible source of inspiration and new scientific achievements. God bless you, dear Viktor Grygorovych!
Translated by Nikitina Viktoriia, LA-02