Affiliation: | 1. Kyiv Taras Shevchenko National University, 64 Volodymirska St., Kyiv, 01033, Ukraine 2. Scientific-Technological Complex “Institute of Monocrystals”, National Academy of Sciences of Ukraine, 60 Lenina Ave., Kharkiv, 61001, Ukraine 3. V. N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv, 61077, Ukraine
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