Evgeniy Stanislavovich Orel

Evgeniy Stanislavovich Orel
O.M. Beketov National University of Urban Economy in Kharkiv · Department of Physics

Doctor of Philosophy

About

35
Publications
296
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15
Citations
Additional affiliations
February 2003 - April 2016
O.M. Beketov National University of Urban Economy in Kharkiv
Position
  • Professor (Associate)
September 1991 - January 2003
National Academy of Sciences of Ukraine
Position
  • Research Assistant
September 1991 - December 2002
B.Verkin Institute for Low Temperature Physics and Engineering
Position
  • Researcher

Publications

Publications (35)
Article
Full-text available
Introduction Rare-earth elements (REE) are the fundamental constituent of many compounds used in construction materials of modern electronics, in particular in magnetoop cs () devices. In this connection there is of interest nding out of mechanisms of forming of of properties of REE. In the real work we develop the model of local optical dipoles [1...
Article
Full-text available
The magnetic ordering temperature Theta(C) of systems with double exchange is calculated using a model of interacting spin systems. This is compared with calculations based on the molecular field model and the spin-wave model. A maximum of the magnetic transition temperature Theta(C) is obtained for an electron concentration x = 0.35, which is in b...
Article
Full-text available
The transformation of the magnetic absorption spectra of a narrow-band ferromagnetic conductor containing local f and quasilocal d magnetic moments under conditions of weak spin–lattice coupling and spatial randomization of the g factors of the quasilocal and local spin subsystems is investigated. It is shown that randomization of the g factors (e....
Article
Full-text available
In narrow-band ferromagnetic conductors containing local f and quasilocal d magnetic moments the interatomic spin correlations created by the combined effects of the intra-atomic interactions of the quasilocal electrons and their intersite hops are playing a role in the formation of the magnetic resonance spectra. This role is examined, and the tra...
Article
The temperature and volume dependences of the thermal conductivity of the Kr1−&xgr;Xe&xgr; solid solution are analyzed in a model in which heat is transferred by low-frequency phonons; above the phonon mobility edge this is done by “diffusive” modes migrating randomly from site to site. The phonon mobility edge ω0 is determined from the condition t...
Article
Full-text available
The temperature and volume dependences of the thermal conductivity of solid Kr(1-x)Xe(x)solution are analyzed within the model in which heat is transferred by mobile low-frequency phonons; above the phonon mobility edge this is done by "localized" modes migrating randomly from site to site. The phonon mobility edge (w0)is determined from the condit...
Article
The dependence of the thermal conductivity Λ of solid solutions of cryocrystals on the molar volume is investigated theoretically in the Callaway approach under the assumption that the heat is transferred by mobile low-frequency phonons and, above the phonon mobility edge, by “localized” modes which migrate randomly from site to site. The phonon mo...
Article
The magnetic contribution to the dynamic dielectric susceptibility tensor χαβ(ω) = χ1αβ(ω)+iχ2αβ(ω) of a system of randomized quasilocal optical dipoles of a magnetic conductor is calculated by the method of two-time retarded Green’s functions. The spectrum of χαβ(ω) consists of a coherent component χcohαβ and an incoherent component χincohαβ which...
Article
The transverse dynamic magnetic susceptibility spectrum is calculated of the narrow band magnetic conductor with strong single-site tensor exchange between quasilocal itinerant electrons and localized magnetic shells electrons and chaotic spatial modulation of g-factors of quasilocal electrons as well as of local spins with the condition of a moder...

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