Search academic texts

Information × Registration Number 0214U008135, 0109U006007 , R & D reports Title Strong-correlated systems: electronic instability, phase transitions, effects of dimension and structure popup.stage_title Head Krivoruchko V.N., Доктор фізико-математичних наук Registration Date 31-07-2014 Organization A.A. Galkin Physics and Engineering Institute of National Academy of Science of the Ukraine popup.description2 Magnetic and magnetoresistive properties of materials with inhomogeneity phase structure, which are due to a slow phase relaxation, have been studied. For superconductor Bi1.6Pb0.4Sr1.8Ca2.2Cu3Ox a correlation between magnitude of the energy gap and magnitude of the resistivity region where an excess current is observed at temperature above the temperature of superconducting transition has been established experimentally. Analysis of the tunnel's spectrums gives a possibility to find more precise the phonons energy for MgB2. First-principle calculations proved that in specific for compound Mn2-xFexAs0.5P0.5 paramagnetic state local magnetic moments of Mn ions preserved while magnetic moments of Fe ions disappeared. This proves that is this compound at least two groups of collective 3d-electrons coexist with fundamentally different properties. It is established that in ferri-manganese pnictides with given level of doping spontaneous inclined states are energetically favored if ferromagnetic and antiferromagnetic components of magnetic moments are no orthogonal. An original method of nanostructured system ferromagnetic resonance spectrum calculation has been proposed. The effects of the antidots lattice parameters and symmetry on structure of ferromagnetic resonance spectrum of a thin ferromagnetic film with antidots lattices have been analyzed. Product Description popup.authors Вальков В.І. Д'яченко О.І. Заворотнев Ю.Д. Каменев В.І. Таренков В.Ю. popup.nrat_date 2020-04-02 Close