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Перегляд Condensed Matter Physics, 2007, № 1 за назвою

Репозиторій DSpace/Manakin

Перегляд Condensed Matter Physics, 2007, № 1 за назвою

Сортувати за: Порядок: Результатів:

  • Dielectric properties of CuInP₂S₆ crystals under high pressure 
    Shusta, V.S.; Prits, I.P.; Guranich, P.P.; Gerzanich, E.I.; Slivka, A.G. (Condensed Matter Physics, 2007)
    Dielectric properties of CuInP₂S₆ layered crystals in the range of ferrielectric phase transition are studied under hydrostatic pressure. The pressure dependence of the phase transition temperature testifies to the phase ...
  • Dynamics of the domain structure in non-uniform ferroelectric crystals 
    Matyjasek, K.; Rogowski, R. (Condensed Matter Physics, 2007)
    This work presents a study of the domain reversal characteristics related to the internal bias field in nonuniform telluric acid ammonium phosphate (TAAP) crystal. We have shown that there is a direct connection between ...
  • Effect of hydrostatic pressure on structural and electronic properties of TGS crystals (first-principle calculations) 
    Andriyevsky, B.; Ciepluch-Trojanek, W.; Patryn, A. (Condensed Matter Physics, 2007)
    First principle calculations of the effect of hydrostatic pressure on the structural and electronic parameters of TGS crystals have been carried out within the framework of density functional theory using the CASTEP code. ...
  • Electret effect in intercalated crystals of the A³B⁶ group 
    Grygorchak, I.; Voitovych, S.; Stasyuk, I; Velychko, O.; Menchyshyn, O. (Condensed Matter Physics, 2007)
    Measurements of dielectric properties of Ni-intercalated GaSe and InSe have been performed. The present study is aimed at the investigation of the low-admixture region where the intercalation induced electret effect occurs. ...
  • Electron and hole spectra in quantum wire with two quantum dots in the electric field 
    Makhanets, O.; Gryschyk, A.; Dovganiuk, M. (Condensed Matter Physics, 2007)
    The energy spectrum of electron and hole is investigated in a complicated nanoheterosystem consisting of two cylindrical semiconductor quantum dots placed into semiconductor quantum wire. Quantum dots are separated by ...
  • Electron energy spectrum in core-shell elliptic quantum wire 
    Holovatsky, V.; Gutsul, V. (Condensed Matter Physics, 2007)
    The electron energy spectrum in core-shell elliptic quantum wire and elliptic semiconductor nanotubes are investigated within the effective mass approximation. The solution of Schrodinger equation based on the Mathieu ...
  • EPR and dielectric spectroscopy of reorienting Cr³⁺-Li⁺ pair centres in Li₂Ge₇O₁₅ crystal 
    Volnianskii, M.D.; Trubitsyn, M.P.; Obaidat, Yahia A.H. (Condensed Matter Physics, 2007)
    Earlier it has been shown that in the lithium heptagermanate Li₂Ge₇O₁₅ structure the chromium doping ions substitute the germanium hosts and create Cr³⁺-Li⁺ pair centres. In the paper EPR and dielectric spectra of ...
  • Exciton in closed and opened quantum dot 
    Tkach, M.V.; Seti, Ju.O. (Condensed Matter Physics, 2007)
    The theory of exciton spectrum in spherically symmetric states for the three- shell closed spherical quantum dot is proposed. The evolution of the exciton spectrum while varying the outer well thickness from zero (stationary ...
  • On a correlation between EPR data for SASeD doped with Cr³⁺ and soft modes 
    Lipinski, I.E.; Kuriata, J.; Korynevskii, N.A. (Condensed Matter Physics, 2007)
    EPR experimental results obtained for SASeD doped with Cr³⁺ are reported with special emphasis on those observations which reveal the effect of soft modes i.e. the temperature dependence of the DZZ spin- Hamiltonian ...
  • Phase transitions in KDP crystals with the complex organic and inorganic impurities 
    Strukov, B.; Shnaidshtein, I.; Grabovsky, S (Condensed Matter Physics, 2007)
    In this paper we present the results of the study of dielectric and thermal properties of KDP crystals doped with different complex organic and inorganic molecules which decorate different (pyramidal or prismatic) crystal ...
  • Phonon spectra of Cu₆PS₅Br superionic ferroelastic: experimental and theoretical studies 
    Studenyak, I.P.; Rushchanskii, K.Z.; Buchuk, R.Yu.; Stephanovich, V.O. (Condensed Matter Physics, 2007)
    The anomalous temperature behavior of the Raman scattering bands at superionic phase transition of Cu₆PS₅Br is revealed. Using density functional perturbation theory within local density approximation, ab initio long-wavelength ...
  • Properties of interface phonon spectra in complicated cylindrical nanosystem 
    Voitsekhivska, O.M.; Gryschyk, A.M. (Condensed Matter Physics, 2007)
    The spectra of two types of interface phonons (top and side optical) are studied within the framework of dielectric continuum model for combined nanoheterosystems consisting of semiconductor cylindrical quantum dots inside ...
  • Pyroelectric response of inhomogeneous ferroelectric-semiconductor films 
    Morozovska, A.N. (Condensed Matter Physics, 2007)
    We have modified Landau-Khalatnikov approach and shown that the pyroelectric response of inhomogeneous ferroelectric-semiconductor films can be described by using six coupled equations for the average displacement, its ...
  • Radiation spectrum of an electron moving in a spiralin medium 
    Konstantinovich, A.V.; Konstantinovich, I.A. (Condensed Matter Physics, 2007)
    The action of the Doppler effect on the particularities of radiation power spectral distribution of an electron moving in a spiral in a medium has been investigated near the Cherenkov threshold. The fine structure of the ...
  • The 60th anniversary of Ivan Vakarchuk 
    Автор відсутній (Condensed Matter Physics, 2007)
    Professor Ivan Vakarchuk is a well-known Ukrainian physicist internationally recognized among theoreticians owing to his works on quantum liquids, phase transitions and critical phenomena, disordered systems and quantum ...
  • The band energy structure of RbKSO₄ crystals 
    Bovgyra, O.V.; Stadnyk, V.Yo.; Franiv, A.V.; Tuzyak, M.R.; Chyzh, O.Z. (Condensed Matter Physics, 2007)
    The energy band structure of mechanically free and compressed RbKSO₄ single crystals is investigated. It is established that the top of the valence band is located at the D point of the Brillouin zone [k = (0.5, 0.5, 0)], ...
  • The baric changes of the refractive properties of K₂SO₄ crystals 
    Stadnyk, V.Yo.; Romanyuk, M.O.; Chyzh, O.Z.; Vachulovych, V.F. (Condensed Matter Physics, 2007)
    The dependencies of the birefringence ∆ni of K₂SO₄ crystals in wide spectral (250–800 nm) ranges, as well as the effect of uniaxial mechanical stress on them have been studied. The values of ni for K₂SO₄ are found to be ...
  • To the memory of Yuri Rudavskii 
    Автор відсутній (Condensed Matter Physics, 2007)
    On February 21, 2007 a sudden regrettable death took away Yuri Rudavskii, a renowned Ukrainian scientist in the field of theoretical physics, doctor of physics and mathematics, professor, head of the Chair of higher ...
  • VIII Ukrainian-Polish and III East-European Meeting on Ferroelectrics Physics 
    Автор відсутній (Condensed Matter Physics, 2007)
    This issue contains Proceedings of the VIII Ukrainian-Polish and III~East-European Meeting on Ferroelectrics Physics (Ukr-Pol 8) held in Lviv on September 4--7, 2006. The Meeting was the continuation of the common ...
  • X-ray photoelectron spectra and electronic structure of quasi-one-dimensional SbSeI crystals 
    Grigas, J.; Talik, E.; Adamiec, M.; Lazauskas, V. (Condensed Matter Physics, 2007)
    The paper presents the X-ray photoelectron spectra (XPS) of the valence band (VB) and of the principal core levels from the (110) and (001) crystal surfaces for the quasi-one-dimensional high permittivity SbSeI single ...

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