1. Research Institute of Physics, Southern Federal University, av. Stachki 193, Rostov-on-Don, 344090, Russia
2. Research Institute of Solid State Electronics Materials, MIREA – Russian Technological University (RTU MIREA), 5th Street of Sokolinaya Gora 22, Moscow, 119454, Russia
3. Technological Department, Platov South-Russian State Polytechnic University (NPI), Prosvescheniya Str. 132, Novocherkassk, 346428, Russia