1. Research Institute of Physics, Southern Federal University, Stachki Ave., 194, 344090 Rostov-on-Don, Russia
2. Kh. Ibragimov Complex Institute of the Russian Academy of Sciences (CI RAS), Staropromyslovskoe hw., 21a, 364051 Grozny, Russia
3. Physical Faculty, Southern Federal University, Zorge Str., 5, 344090 Rostov-on-Don, Russia
4. Institute of High Technology and Piezo Technic, Southern Federal University, Milchakova Str., 10, 344090 Rostov-on-Don, Russia