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Information × Registration Number 0306U001502, 0101U005420 , R & D reports Title Spin dynamic and kinetic effects in magnetic popup.stage_title Дослідження процесів згасання сигналів ядерної спінової луни в магнітовпорядкованих речовинах. Дослідження імпульсних відгуків ЯМР у твердих тілах із внутрішньою рухливістю. Дослідження взаємодії СВЧ випромінювання 3-х сантиметрового діапазону композиційними матеріалами й структурами. Дослідження гальваномагнітних ефектів у магнітних напівпровідниках з домішками. Дослідження надтонких взаємодій у магнетиках. Head Berzhansky Vladimir Naumovich, Registration Date 05-04-2006 Organization National Taurida V.Vernadsky University popup.description2 The theory of multiquantum effects in the spectroscopy of nuclear mag-netic resonance is extended and experimentally confirmed in cases of multipulsing excitation and arbitrary values of nuclear spins, that consid-erably dilates opportunities of a method of a multiquantum echo-spectroscopy of magnetics. Requirements of formation of hyperfine fields on nucleus of copper and chromium halcogenide spinels are explored. The crucial importance of anions and transition metals in tetra positions in formation of hyperfine fields in chromium spinels is shown. The cor-relation between hyperfine field and covalence of the chro-mium-ligand bond is set. The two-pulse spin echo decay from protons in magnetic fluids based on bensole with magnetite nanoparticles as magnetic filling compound and olein acid as surface-active substance is studied. The magnification of velocity of signal attenuation of signals an echo owing to magnification of concentration of a magnetic filling compound is revealed. It is shown, that themagnification of velocity of a nuclear relaxation is caused by magnification of a degree of inhomogeneity of magnetic fields at protons Nuclear magnetic resonance and electrical properties of the copper sul-fochromite, having semimetallic type of conductance is studied. It is shown, that the replacement of Cr3+ ions by Sb5+ions results in the transformation of this compound into ferromagnetic semiconductor. The theory of a simulated magnetic with random structure on the basis of metallized spherical particles is constructed. Theoretical expressions for the frequency dependences of the real and imaginary parts of a magnetic conductivity are received. The new method of measuring of a reflectivity in a wave guide is designed and tested. This method gives the high-accuracy measurements of magnetic and dielectric permeability of lamellar samples of model materials, including composite materials. Reflection of electromagnetic waves from a stratum of the two-level composition material consisting of distributed in the dielectric matrix of inserts as pieces of microwires for a case of the strong and feeble skin ef-fect is investigated. On the basis of the solution of a problem of optimization it is shown, that the greatest wide-branding at the given thickness the composite in which both levels of inserts will consist of a microwire with the strong skin effect has. Product Description popup.authors popup.nrat_date 2020-04-02 Close