E.A. Stepantsov – Ph.D. (Phys.-Math.), Leader Research Scientist, 

Institute of Crystallography n.a. A.V. Shubnikov, FSIC Crystallography and Photonics of RAS (Moscow)

E-mail: stepantsov@ns.crys.ras.ru

E.A. Stepantsov – Ph.D. (Phys.-Math.), Leader Research Scientist, 

Institute of Crystallography n.a. A.V. Shubnikov, FSIC Crystallography and Photonics of RAS (Moscow, Russia)

A.Kh. Abduev1, A.Sh. Asvarov2, A.K. Akhmedov3, S.V. Agasieva4, V.V. Belyaev5, A.S. Borisova6, L.S. Flyzhnikova7, F.M.A. Abdelrkhman8

1, 4–8 Peoples' Friendship University of Russia (Moscow, Russia),
2, 3 Institute of Physics, Dagestan Federal Research Center of the Russian Academy of Sciences (Makhachkala, Republic Dagestan)
5 Moscow State Regional University (Mytishchi, Moscow Region, Russia)