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Information × Registration Number 0221U105350, 0119U100315 , R & D reports Title Dynamic phenomena and phase transitions in micro and nanostructured materials for modern magnetoelectronics devices. popup.stage_title Head Sheka Denys D., Доктор фізико-математичних наук Registration Date 29-06-2021 Organization Taras Shevchenko National University of Kyiv popup.description2  The object of research - solid metal alloys, which are characterized by magnetostructural phase transitions, magnetic structures of complex geometry, layered magnetic structures of reduced dimension with dielectric and metal layers, ordered and disordered arrays of magnetic nanoelements. The aim of the work is to study dynamic electromagnetic phenomena and phase transitions in micro- and nanostructured magnetic materials, magnetic layered structures and structures with complex geometry to improve existing and develop new devices of spintronics, magnonics, spin-orbitronics, skirmionics and strey. Research methods - theoretical analysis, numerical modeling, experimental research in the microwave and optical range, radio, photoelectron and Auger electron spectroscopy, atomic force and electron microscopy. In the newest field of magnetism - curvilinear magnetism - the micromagnetic theory of curvature effects in ferro- and antiferromagnets is developed, by means of which the classification of curvature effects is carried out, the nonlocal effect of chiral symmetry destruction is provided, a new type of domain walls distorted magnetic film. The concept of a diode that implements the filtering of domain walls of a certain topological charge and helix in a magnetic film with a functionally graduated Dzialoshinsky-Moria interaction is proposed. A phenomenological model of the nonlinear magnetoelectric effect in hexaferrites with a Y-type crystal structure at microwave frequencies, which qualitatively corresponds to the experimental data, is proposed. Product Description popup.authors Budnyk Mykola M. Vasylev Anatoliy G. Danko Volodymyr P. Danko Oleksandr V. Derevnina Zinaida M. Zavyslyak Іgor V. Koblyanskyj Yuriy V. Kovalenko Andriy V. Kolesnyk Oleg G. Kondratovych Yuriy M. Kononenko Denys Yu. Kot Oleksandr O. Kotov Mykhailo M. Kulyk Sergiy P. Kuraschov Vitaliy N. Len Yurii A. Malyschev Volodymyr Yu. Melkov Gennadiy A. Pylypovskyi Oleksandr V. Popov Maksym O. Prokopenko Oleksandr V. Pustovit Yurii V. Radionova Tetyana V. Romanyuk Olena V. Tomilo Artem V. Chernoluzkyj Dmytro L. Yakymov Costyantyn I. popup.nrat_date 2021-06-29 Close