Selected acomplished national R&D projects
NAS of Ukraine grant "Controlling nonlinear processes in spintronic nanostructures"
NAS of Ukraine grant for young researcher groups & laboratories # 08/01-2024(5)
Duration – 2024-2025
PI – D.Sc. Roman Verba
Project abstract
Magnetically ordered materials and structures based on them are an excellent platform for studying and utilizing various nonlinear effects. In bulk samples and thin films, the possibilities for manipulating nonlinear processes are quite limited. Magnetic nanostructures are a completely different matter, as the discrete nature of the spin excitation spectrum and the specific symmetry of spin wave modes open up wide possibilities for controlling nonlinear processes, in particular their intensity and selection rules.
The aim of this project is to study in detail the ways of controlling nonlinear three- and four-magnon processes in single- and multilayer magnetic nanostructures and to develop methods for using the studied regularities to expand the functional capabilities of spintronics nanoelements. We plan to study various mechanisms of affecting nonlinear processes, such as changing the symmetry of the magnetic state and/or interacting spin wave modes, hybridization of oscillations in multilayer structures, and dynamic changes in the strength of magnetic interactions. The results of this project will be of fundamental importance in terms of deepening the understanding of the symmetry of nonlinear processes in magnetic nanostructures, as well as applied value, in particular, enabling the development of spintronic nanoelements with controlled nonlinear response, interesting for microwave nanoelectronics, non-Boolean computing, and beyond.
NRFU grant "The development of physical principles of magnetic nanoelectronics"
National Research Foundation of Ukraine grant #2020.02/0261, call “Support for research of leading and young scientists”.
Duration – 2020-2021, 2023.
PI – Prof. Boric Ivanov, D.Sc. Volodymyr Golub.
Project abstract
The project focused on the development of physical principles of sub-terahertz range electronic systems based on magnetic materials to overcome the limits of modern semiconductor systems: limited speed and relatively high energy consumption for recording, rewriting and information processing. In particular, the project is focused to solve the problem of creation of compact sources of terahertz radiation for future telecommunications systems, security systems, space communication, biology and medicine, and information technologies. The search for magnetic materials, where the effects of exchange amplification of dynamic parameters accompanied by rather large galvanomagnetic effects take place for the efficient operation of electrically controlled devices, is planned. The principles of the formation of functional structures with the desired properties will be developed, the physical processes occurring in such structures will be clarified, and application recommendations will be given.
Project "Combined temperature and electrically controlled magnetic nanostructures for spintronics and magnonics"
NAS of Ukraine projects under the budget program “Support for the development of priority areas of scientific research” (Budget Program Classification Code 6541230)
Duration – 2022.
PI – D.Sc. Volodymyr Golub.
Project abstract
The goal of the project is the development of physical principles as for static and dynamic processes in one- and multicomponent nanoscale magnetic heterostructures with interactions that can be controlled by the influence of external factors (temperature, electricity, etc.), and to elaborate methods to improve existing energy efficient devices for magnonics and spintronics applications and to discover ways to create new ones.
Project “Nanostructured magnetic composites for thermoelectronic control and thermostabilization systems”
NAS of Ukraine projects under the budget program “Support for the development of priority areas of scientific research” (Budget Program Classification Code 6541230)
Duration – 2020-2021.
PI – Prof. Oleksandr Tovstolytkin
Project abstract
This work aimed to develop magnetic nanostructures with controlled switching of magnetic configurations within a given temperature range, clarify how the parameters of individual nanostructure components influence magnetic transition characteristics and magnetically induced entropy change, and develop the physical basis for creating a new type of functional elements for thermal stabilization of micro-sized electronic circuit and temperature sensor components.
The study focused on three- and multilayer nanostructures containing ferromagnetic layers based on iron group elements and weakly magnetic (antiferromagnetic) spacers based on iron alloys with chromium or manganese. As an integral part of this study, we also examined single- and/or double-layer films to develop manufacturing methods and optimize the magnetic properties of each component.