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Information × Registration Number 0224U033036, (0124U003644) , R & D reports Title Ferromagnetic Insulator Systems with Improved Magneto-transport Properties for Spintronic Devices popup.stage_title Формування композитних матеріалів феромагнітний метал-діелектрик шляхом пошарової конденсації окремих компонент із наступною термообробкою Head Shkurdoda Yurii O., Доктор фізико-математичних наук Registration Date 16-12-2024 Organization Sumy State University popup.description1 This project aimed at the improvement of magnetotransport properties of ferromagnetic-insulator thin-film systems. The focus of material improvement will be based on layer-by-layer condensation systems that feature a transition from the two-dimensional continuous to the discontinuous threedimensional systems popup.description2  In the class of nanoscale magnetic materials, ferromagnetic metal-dielectric nanocomposites and layered structures of the [FM/I]n type occupy a special place. With appropriate ratios of volume fractions of components in nanocomposites and appropriate effective layer thicknesses in layered structures, they can consist of magnetic nanoparticles distributed in a dielectric matrix. The scientific and practical importance of such materials is determined by the fact that their electrical and magnetic properties can be controlled by changing the concentration of components or the effective thickness of the layers, which in turn leads to a change in the size of magnetic nanoparticles and, as a result, changes in electrical conductivity, magnetic and magnetoresistive properties. This is especially evident in the electrical resistance's dependence on the components' volume fraction or the layers' effective thickness. The critical behavior of this dependence is related to the difference in the conductivity mechanisms and the electrical resistance of the metallic and dielectric phases. So, the proposed method of forming metal-dielectric composite materials by the method of layer-by-layer condensation with dFe = 3 nm and subsequent heat treatment at temperatures of 100, 200, and 300 ºС makes it possible to obtain composite materials with a dielectric amorphous matrix without the content of ferromagnetic metal atoms, almost the same size of magnetic granules and a change these sizes if necessary Product Description popup.authors Lohvynov Andrii M. Pazukha Iryna M. Pylypenko Oleksandr V. Tyschenko Kostiantyn V. Shkurdoda Yurii О. popup.nrat_date 2024-12-16 Close