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Information × Registration Number 0223U001722, 0122U001908 , R & D reports Title Spin-dependent effects in nanostructured materials and structures of reduced dimension popup.stage_title Head Prokopenko Oleksandr V., Доктор фізико-математичних наук Registration Date 02-02-2023 Organization Taras Shevchenko National University of Kyiv popup.description2 Object of research – Heterogeneous and nanostructured magnetic materials, conducting and non-conducting magnetic films, two-layer magnetic-metallic film structures, multilayer spintronic nanostructures with dielectric and/or metal layers, magnon crystals, ordered and disordered arrays of magnetic nanostructures. The purpose of the work is the study of fundamental spin-dependent phenomena in nanostructured magnetic materials and structures of reduced dimensions (films, wires, spintronic nanostructures, magnon crystals) for the development of new areas of modern physics and electronics, improvement of existing and development of new magnetoelectronic devices. Research methods – theoretical analysis, numerical modeling, experimental studies in the microwave and optical ranges, radio and Auger electron spectroscopy, atomic force and electron microscopy. The stochastic mode of generation of the antiferromagnetic Hall spin oscillator of the Josephson type is studied and it is shown that there are several regions of its stochastic dynamics. It is shown that cooling the signal detector based on antiferromagnetic tunneling (ATP) to cryogenic temperatures T practically does not change the constant output voltage of the detector, but allows to significantly increase its signal-to-noise ratio (up to ~500 at T = 10 K). It was established that the output power of the ATP-based signal source located inside a rectangular dielectric microresonator can exceed 1–10 μW in the frequency range of 0.1–1 THz. The existence of plasmon polaritons (PP) in the microwave range above a ferromagnetic film and a ferromagnetic wire is theoretically predicted, and the conditions for increasing the Q factor of the corresponding resonant systems, in particular, resonators placed in metal waveguides, are determined.  Product Description popup.authors Derevnina Zinayida М. Kondratovych Yuriy M. Malyschev Volodymyr Yu. Malyshev Oleksiy V. Melkov Gennadiy A. Popov Maksym O. Prokopenko Volodimir O. Pustovit Yurii V. Reznikov Mikhail I. Rodionova Tetyana V. Romanyuk Olena V. Sizhuk Andrii S. Slobodianiuk Denys V. Fantych Ivan Ya. Schtanko Oleg V. popup.nrat_date 2023-02-02 Close