Author Affiliations

E. I. Gorokhova Scientific Research and Technological Institute of Optical Material Science, VNTs S. I. Vavilov State Optical Institute, St. Petersburg

P. A. Rodnyi St. Petersburg State Polytechnic University, St. Petersburg

E. P. Lokshin I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, Apatity

K. P. Lott Tallinn University of Technology, Tallinn, Estonia

G. B. Kunshina I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, Apatity

K. A. Chernenko St. Petersburg State Polytechnic University, St. Petersburg

G. V. Ananieva, S. B. Eron’ko Scientific Research and Technological Institute of Optical Material Science, VNTs S. I. Vavilov State Optical Institute, St. Petersburg

I. V. Khodyuk St. Petersburg State Polytechnic University, St. Petersburg

O. G. Gromov I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, Apatity

E. A. Oreschenko Scientific Research and Technological Institute of Optical Material Science, VNTs S. I. Vavilov State Optical Institute, St. Petersburg