Z. A. Rekhman
North-Caucasus Federal University
Russian Federation

Zafar A. Rekhman – Assistant at the Department of Physics and Technology of Nanostructures and Materials, Faculty of Physics and Technology 

Stavropol

M. A. Pirogov
North-Caucasus Federal University
Russian Federation

Maxim A. Pirogov – Student of the Department of Physics and Technology of Nanostructures and Materials, Faculty of Physics and Technology 

Stavropol

A. V. Serov
North-Caucasus Federal University
Russian Federation

Alexander V. Serov – Dr. Sci. (Techn.), Associate Professor of the Department of Inorganic and Physical Chemistry, Faculty of Chemistry 

Stavropol

I. M. Shevchenko
North-Caucasus Federal University
Russian Federation

Irina M. Shevchenko – PhD, Associate Professor of the Department of Physics and Technology of Nanostructures and Materials, Faculty of Physics and Technology 

Stavropol

A. V. Blinov
North-Caucasus Federal University
Russian Federation

Andrey V. Blinov – PhD, Head of the Department of Physics and Technology of Nanostructures and Materials, Faculty of Physics and Technology 

Stavropol