State budget theme “New substances, materials, types of matter and approaches to energy conservation and environmental protection”. Code No. 2P2-BF (state registration number 0121U113567). Supervisor, Doctor of Physics and Mathematics, Professor, Honoured Worker of Science and Technology of Ukraine, Head of the Department of Experimental Physics A. S. Voloshinovsky. Completion time: 1 January 2021 – 31 December 2021. The amount of funding in 2021 is 988.480 th. UAH (47.114 th. UAH – the Department of Mineralogy, Petrography and Geochemistry).