Search academic texts

Information × Registration Number 0218U001874, 0117U002360 , R & D reports Title Spectral and transport properties of the metal oxide compounds with elements of the transition groups popup.stage_title Head Zubov Eduard E., Registration Date 14-12-2018 Organization Donetsk State University popup.description2 Current-voltage characteristics of metallic heterostructures with a tunnel barrier formed by a semiconducting oxide layer with transition-metal impurity centers have been investigated. A physical mechanism responsible for the appearance of negative differential resistance regions is proposed. A theory of a nonlinear transport in the hybrid normal metal - oxide barrier - superconductor structure was developed. Asymmetry of current-voltage characteristic of the considered electronic system was revealed. Dissipation effects in MoRe/doped silicon oxide/MoRe trilayers, which are caused by the emergence of phase-slip centers in tungsten weak links, have been investigated. A new method for determining a spin relaxation length in wide superconducting films has been proposed. Dynamics of single-particle wave packets in superconducting quantum networks has been studied. A method for obtaining different output (energetically acceptable) packets using a single parameter controlled from outside has been developed. The nature of the unusual hysteresis loop exchange bias and the inversion of the ferromagnetic moment as a spin switching in the compensated single-crystal ferrimagnets RFeO3 (R = Nd, Sm, Er) were investigated. Theoretical mechanism of this phenomenon is presented, which is based on a tiny deformation of the antiferromagnetic moment of the iron sublattice by the magnetic field. The effect of partial replacement of Cr on Mn and quenching of the samples on the nature of structural and magnetic phase transitions in semi-Heusler NiMn1-xCrxGe alloys was studied. It has been established that the magnetic phase transition temperatures decrease as a result of the sample quenching and magnetic-entropy changes reach a maximum value. Product Description popup.authors Білоголовський М.О. Горностаєва О.В. Житлухіна О.С. Залуцька М.Н. Зубов Е.Є. popup.nrat_date 2020-04-02 Close