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Перегляд Физика низких температур за темою "Динамика кристаллической решетки"

Репозиторій DSpace/Manakin

Перегляд Физика низких температур за темою "Динамика кристаллической решетки"

Сортувати за: Порядок: Результатів:

  • Crystalline phase detection in glass ceramics by EPR spectroscopy 
    Antuzevics, A.; Rogulis, U.; Fedotovs, A.; Popov, A.I. (Физика низких температур, 2018)
    The advances of EPR spectroscopy for the detection of activators as well as determining their local structure in the crystalline phase of glass ceramics is considered. The feasibility of d-element (Mn²⁺, Cu²⁺) and ...
  • Fermi resonance in Ne, Ar and Kr-matrix infrared spectra of 5-bromouracil 
    Ivanov, A.Yu.; Rubin, Yu.V.; Egupov, S.A.; Belous, L.F.; Karachevtsev, V.A. (Физика низких температур, 2013)
    Low-temperature matrix isolation Fourier-transform infrared spectroscopy and quantum-chemical calcula-tions with DFT/B3LYP and MP2 methods were used for investigation of isolated 5-bromouracil (BrU) mole-cules. Only one ...
  • From optical spectra to phase diagrams — the binary mixture N2–CO 
    Vetter, M.; Brodyanski, A.; Jodl, H.-J. (2007)
    We investigated the T–c% phase diagram of the binary system N2–CO. From changes in IR spectra of all kinds of mode excitations (phonons, vibrons) we were able to determine the temperature of phase transitions (solid–solid, ...
  • Hysteretic phenomena in Xe-doped C₆₀ from x-ray diffraction 
    Prokhvatilov, A.I.; Galtsov, N.N.; Legchenkova, I.V.; Strzhemechny, M.A.; Cassidy, D.; Gadd, G.E.; Moricca, S.; Sundqvist, B.; Aksenova, N.A. (Физика низких температур, 2005)
    Polycrystalline fullerite С₆₀ intercalated with Xe atoms at 575 K and a pressure of 200 MPa was studied by powder x-ray diffraction. The integrated intensities of a few brighter reflections have been utilized to evaluate ...
  • Interaction between C₆₀ and gases under pressure 
    Sundqvist, B. (Физика низких температур, 2003)
    A brief review is given of the interaction between fullerite C₆₀ and various gases under elevated pressure. Subjects discussed include the formation of ordered interstitial gas-fullerene compounds, reactions between ...
  • Intercalation of fullerite C₆₀ with N₂ molecules. An investigation by x-ray powder diffraction 
    Galtsov, N.N.; Prokhvatilov, A.I.; Dolgova, G.N.; Cassidy, D.; Gadd, G.E.; Moricca, S.; Sundqvist, B. (Физика низких температур, 2007)
    The lattice parameter a of fullerite C₆₀ intercalated with N₂ molecules is investigated in the temperature interval 6–295 K by x-ray diffraction. It is found that the interstitial molecular N₂ has a considerable effect ...
  • Low-temperature control of nanoscale molecular dynamics 
    Hyldgaard, P. (Физика низких температур, 2001)
    A novel in situ probe of the nanoscale molecular dynamics of organic-molecule and fullerene-tube nanostructures is proposed. General and consistent results for the nonlinear-current coupling to the nanostructure excitations ...
  • Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions 
    Gnezdilov, V.; Choi, K.-Y.; Pashkevich, Yu.; Lemmens, P.; Shiryaev, S.; Bychkov, G.; Barilo, S.; Fomin, V.; Yeremenko, A.V. (Физика низких температур, 2006)
    One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger number of phonon modes than allowed ...
  • Low-temperature thermal conductivity of solid carbon dioxide 
    Sumarokov, V.V.; Stachowiak, P.; Jezowski, A. (Физика низких температур, 2003)
    Preliminary results of the thermal conductivity measurements performed in the temperature range 1.5-35 K on pure carbon dioxide are presented. The data below 25 K have been obtained for the first time. The thermal conductivity ...
  • Low temperature thermal expansion of fullerite C₆₀ alloyed with argon and neon 
    Aleksandrovskii, A.N.; Gavrilko, V.G.; Esel`son, V.B.; Manzhelii, V.G.; Udovidchenko, B.G.; Maletskiy, V.P.; Sundqvist, B. (Физика низких температур, 2001)
    Динамика кристаллической решетки The linear thermal expansion of compacted fullerite C₆₀ alloyed with argon (ArxC₆₀) and neon (NexC₆₀) are investigated by a dilatometric method. The experimental temperature is 2-12 K. ...
  • Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ 
    Aleksandrovskii, A.N.; Bakai, A.S.; Dolbin, A.V.; Esel`son, V.B.; Gadd, G.E.; Gavrilko, V.G.; Manzhelii, V.G.; Moricca, S.; Sundqvist, B.; Udovidchenko, B.G. (Физика низких температур, 2003)
    The low temperature (2-24 K) thermal expansion of pure (single-crystal and polycrystalline) C₆₀ and polycrystalline C₆₀ intercalated with He, Ne, Ar, and Kr has been investigated using the high-resolution capacitance ...
  • Low-temperature vibration characteristics in InSe single crystals intercalated by Ni 
    Baran, A.; Botko, M.; Kajňaková, M.; Feher, A.; Feodosyev, S.; Syrkin, E.; Klochko, M.; Tovstyuk, N.; Grygorchak, I.; Fomenko, V. (Физика низких температур, 2015)
    The theoretical and experimental study of low-temperature heat capacity of InSe intercalated by nickel as a function of temperature has been carried out in range 0.3–30 K. The effect of intercalation by nickel on phonon heat ...
  • On phase, action and canonical conservation laws in kinematic-wave theory 
    Maugin, Gerard A. (Физика низких температур, 2008)
    Canonical equations of energy and momentum are constructed in the kinematic-wave theory of waves in a continuum. This is done in analogy with what is achieved in nonlinear continuum mechanics. The starting point is a ...
  • On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ 
    Khalack, J.M.; Loktev, V.M. (Физика низких температур, 2003)
    A simple planar model for an orientational ordering of threefold molecules on a triangular lattice modeling a close-packed (111) plane of fullerite is considered. The system has 3-sublattice ordered ground state which ...
  • On the polyamorphism of fullerite-based orientational glasses 
    Aleksandrovskii, A.N.; Bakai, A.S.; Cassidy, D.; Dolbin, A.V.; Esel’son, V.B.; Gadd, G.E.; Gavrilko, V.G.; Manzhelii, V.G.; Moricca, S.; Sundqvist, B. (Физика низких температур, 2005)
    The dilatometric investigation in the temperature range of 2–28 K shows that a first-order polyamorphous transition occurs in the orientational glasses based on C₆₀ doped with H₂, D₂ and Xe. A polyamorphous transition ...
  • Orientational isotopic effects in the thermal conductivity of CH4/CD4 solid solutions 
    Krivchikov, A.I.; Stachowiak, P.; Pisarska, E.; Jezowski, A. (2007)
    The thermal conductivity of (CH4)1–c(CD4)c solid solutions with c = 0, 0.03, 0.065, 0.13, 0.22, 0.4, 0.78, and 1.0 has been measured in the region of existence of three orientational phases: disordered (phase I), partially ...
  • Process of intercalation of C₆₀ with molecular hydrogen from XRD data 
    Yagotintsev, K.A.; Stetsenko, Yu.E.; Legchenkova, I.V.; Prokhvatilov, A.I.; Strzhemechny, M.A.; Schafler, E.; Zehetbauer, M. (Физика низких температур, 2009)
    The process of normal hydrogen infusion into a C₆₀ powder at 1 bar and room temperature was monitored using x-ray diffraction. The effect of the intercalation on the lattice proved to be rather weak: the volume expansion ...
  • Relaxation dynamics in the high-frequency crystal-field spectroscopy of PrNi₅ point contacts 
    Balkashin, O.P.; Sukhodub, G.L.; Yanson, I.K.; Brill, T.M.; Jansen, A.G. M.; Wyder, P. (Физика низких температур, 2001)
    High-frequency point-contact (PC) spectroscopy is used to investigate the relaxation processes kinetics in the intermetallic rare-earth compound PrNi₅. A difference is observed in the spectral response between the conventional ...
  • Resonance absorption, reflection, transmission of phonons and heat transfer through interface between two solids 
    Kosevich, Yu.A.; Feher, A.; Syrkin, E.S. (Физика низких температур, 2008)
    The different mechanisms of resonant transport of phonons between two media in the presence of impurity intermediate layer are described. Particular attention is focused on the resonance interaction of elastic waves with ...
  • Specific features of thermal expansion and polyamorphism in CH4–C60 solutions at low temperatures 
    Dolbin, A.V.; Esel’son, V.B.; Gavrilko, V.G.; Manzhelii, V.G.; Vinnikov, N.A.; Gadd, G.E.; Moricca, S.; Cassidy, D.; Sundqvist, B. (2007)
    The temperature dependence of the linear thermal expansion coefficient α(T) has been investigated in the temperature range of 2.5 to 23 K for two different CH4–C60 solutions in which CH4 molecules occupied 24 and 50% of ...

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