L.A. Bliznyuk1, E.S. Maksimovich2, N.V. Liubetski3, T.P. Petrochenko4, V.I. Kasko5

1, 3–5 Scientific and Practical Center of the National Academy of Sciences of Belarus for Materials Science (Minsk, Republic of Belarus)
2,3 Belarusian State University (Minsk, Republic of Belarus)
2 Institute of Applied Physics of the National Academy of Sciences of Belarus (Minsk, Republic of Belarus)
1 tanya-petr@physics.by