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Faculty of Mathematics and Physics, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Prospect Peremohy 37, Kyiv, 03056, Ukraine
Faculty of Mathematics and Physics, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Prospect Peremohy 37, Kyiv, 03056, Ukraine
Faculty of Mathematics and Physics, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Prospect Peremohy 37, Kyiv, 03056, Ukraine
Institute of Magnetism NAS and MES of Ukraine, Vernadskiy Av., 36-b, Kyiv, 03142, Ukraine