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Information × Registration Number 0207U008320, 0107U004212 , R & D reports Title The influence of the form of density of electronic states on electric and magnetic properties of narrow-band materials popup.stage_title Head Kramar Oleksandr, Registration Date 07-12-2007 Organization Ternopil State Technical Ivan Puluj University popup.description2 In the framework of generalized model for electronic subsystem of Mott-Hubbard material with correlated hopping and taking into account the peculiarities of the bare electronic density of states form the comprehensive description of magnetic and electrical properties of narrow-band systems as well as their changes under the external influences has been carried out. Within the Green function method using the proposed projection procedure the quasi-particle energy spectra have been obtained and on this basis the ground state energy, the critical concentrations for transitions from paramagnetic state to ferromagnetic one (saturated or non-saturated), the lattice magnetization at arbitrary temperatures, Curie temperature have been calculated. The peculiarities of static electronic conductivity, effective masses of current carriers, the chemical potential at different forms of the density of states in systems with strong electron correlation have been studied. On the basis of these results a series of peculiarities of the effects caused by external influences (doping, temperature changes, external pressure and magnetic field) on ferromagnetic and transport properties of narrow-band materials like oxides, sulphides or selenides of transition metals have been explained. Product Description popup.authors popup.nrat_date 2020-04-02 Close