Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gunyakov V. A., Parshin A. M., Khrustalev B. P., Shabanov V. F.
Заглавие : Determination of anchoring energy for nematic onto ferroelectric substrate
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1993. - Vol. 87, Is. 9. - P.751-753. - ISSN 0038-1098, DOI 10.1016/0038-1098(93)90406-D
Примечания : Cited References: 8
Предметные рубрики: LIQUID-CRYSTALS
SURFACE
Аннотация: A technique to determine anchoring energy of planar MBBA layer with cleavage surfaces of triglycine sulphate is presented. The method is based on guest-host phenomenon in impure nematic. The anchoring energy W = (1.0 +/- 0.3).10(-4) erg/cm2 is calculated within Rapini-Papoular approximation.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gunyakov V. A., Parshin A. M., Shabanov V. F.
Заглавие : Investigation of the nematic-ferroelectric interface under a strong magnetic field
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1998. - Vol. 105, Is. 12. - P761-765. - ISSN 0038-1098, DOI 10.1016/S0038-1098(97)10221-6
Примечания : Cited References: 14
Предметные рубрики: ANCHORING ENERGY
LIQUID-CRYSTAL
WALL INTERFACE
SURFACE
TRANSITION
Ключевые слова (''Своб.индексиров.''): ferroelectrics--liquid crystals--surfaces and interfaces--phase transitions--light absorption
Аннотация: The behaviour of methoxy benzylidene butyl aniline (MBBA) nematic liquid crystal on the;cleavage surface of triglycine sulphate under a strong magnetic field has been investigated. With the saturation regime obtained for the liquid crystal cell in fields up to 100 kOe, for the first time the possibility appears to determine not only the ordinary anchoring coefficient W-2, but the effective anchoring energy W* without any fitting procedure. Considerable difference in these parameters (two orders of magnitude) disagrees with "electrical" corrections of the Rapini-Papoular approximation. This discrepancy is connected with the surface polarization caused by spontaneous ordering of longitudinal components of MBBA molecular dipoles on interface. The form of the anisotropic interaction potential for such interfaces has to take into account polar effects in near-surface layers of the liquid crystal. (C) 1998 Elsevier Science Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Bondarenko G. N.
Заглавие : Epitaxial B2-NiAl layers formed by nanosecond laser irradiation of thin Al/Ni bilayers
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2006. - Vol. 32, Is. 10. - P827-830. - ISSN 1063-7850, DOI 10.1134/S1063785006100026
Примечания : Cited References: 18
Предметные рубрики: POWDER MIXTURES
TRANSFORMATION
TRANSITIONS
OLIVINE
SURFACE
Аннотация: The results of experiments on the synthesis of epitaxial B2-NiAl layers by means of nanosecond laser irradiation of sequentially deposited thin nickel and aluminum layers (Al/Ni bilayers) on a MgO(001) substrate surface are presented. Features of the phase formation under the laser action and during the combustion wave initiation are considered. The rapid formation of an epitaxial B2-NiAl layer is explained in terms of a martensitic-like mechanism of the transfer of reacting atoms via a layer of reaction products. It is suggested that this mechanism can compete with diffusion via grain boundaries and dislocation, thus explaining the ultrafast transfer of reacting atoms via a layer of reaction products for various methods of initiation of the solid-state synthesis.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ovchinnikov S. G., Markov V. V., Edelman I. S., Seredkin V. A.
Заглавие : Mechanism of magnetic ordering in Dy1-xNix-Nibilayer films
Разночтения заглавия :авие SCOPUS: Mechanism of magnetic ordering in Dy1-x Ni x -Ni bilayer films
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007. - Vol. 49, Is. 5. - P900-904. - ISSN 1063-7834, DOI 10.1134/S1063783407050162
Примечания : Cited References: 18. - This work was supported by the Department of Physical Sciences of the Russian Academy of Sciences (program “Spintronics”) and the Siberian Division of the Russian Academy of Sciences (complex integration project no. 3.5)
Предметные рубрики: DYSPROSIUM
MULTILAYERS
SURFACE
DY
Ключевые слова (''Своб.индексиров.''): 73--20--at--73--61--at--75--70---i
Аннотация: A mechanism for the magnetic ordering of dysprosium in Dy1-x Ni (x) -Ni bilayer films is proposed. This ordering was discovered earlier by the authors when studying magnetic circular dichroism. For x exceeding a threshold value (similar to 0.05), the contribution from the Dy1-x Ni (x) layer in a bilayer film to the magnetic circular dichroism over the temperature range 80-300 K is approximately equal in magnitude to the magnetic circular dichroism observed in a single-layer Dy film at temperatures below the ferromagnetic phase transition temperature of Dy (similar to 100 K). Since magnetic circular dichroism is an effect linear in magnetization, the observed effect is associated with magnetic ordering of the Dy1-x Ni (x) layer in bilayer films due to the simultaneous influence of two factors: the incorporation of Ni into the Dy layer and the influence of the continuous Ni sublayer. The ferromagnetic ordering of a dysprosium layer doped with nickel (under conditions of an atomic contact with a continuous nickel layer) was confirmed by the field dependences of the polar and longitudinal Kerr effects. It was shown that both layers in the bilayer structure are magnetized in the same direction and characterized by an anisotropy of the easy-plane type. The magnetic ordering is assumed to be due to the change in the density of states of the Dy1-x Ni (x) alloy caused by hybridization with the narrow peaks near the Fermi level characteristic of nickel.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edelman I. S., Ovchinnikov S. G., Markov V. V., Kosyrev N. N., Seredkin V. A., Khudyakov A. E., Bondarenko G., Kesler V.
Заглавие : Room-temperature ferromagnetism in Dy films doped with Ni
Место публикации : Physica B: ELSEVIER SCIENCE BV, 2008. - Vol. 403, Is. 18. - P3295-3301. - ISSN 0921-4526, DOI 10.1016/j.physb.2008.04.018
Примечания : Cited References: 25. - The work was supported partly by the Integration Project of SB RAS (# 3.5), Program "Spintronics" of the Department of Physical Sciences of RAS, and RFBR Grant no. 07-03-00320.
Предметные рубрики: METAL NANOSCALE MULTILAYERS
EARTH
MAGNETISM
SURFACE
Ключевые слова (''Своб.индексиров.''): dy--dy-ni bi-layer films--magnetic ordering--magnetic circular dichroism--magneto-optic kerr effect--auger spectroscopy--auger spectroscopy--dy--dy-ni bi-layer films--magnetic circular dichroism--magnetic ordering--magneto-optic kerr effect--magnetic fields--nickel--bi layer films--magnetic (ce)--magneto optical--room temperature (rt) ferromagnetism--spectral dependences--magnetic field effects
Аннотация: Temperature, magnetic field and spectral dependences of magneto-optical effects (MOEs) in bi-layer films Dy(1-x)Nix-Ni and Dy(1-x)(NiFe)(x)-NiFe were investigated, x changes from 0 to 0.06. Peculiar behavior of the MOEs was revealed at temperatures essentially exceeding the Curie temperature of bulk Dy which is explained by the magnetic ordering of the Dy layer containing Ni under the action of two factors: Ni impurities distributed homogeneously over the whole Dy layer and atomic contact of this layer with continues Ni layer. The mechanism of the magnetic ordering is suggested to be associated with the change of the density of states of the alloy Dy(1-x)Nix owing to hybridization with narrow peaks near the Fermi level character for Ni. (C) 2008 Elsevier B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Parshin A. S., Alexandrova G. A., Dolbak A. E., Pchelyakov O. P., Ol'shanetski B. Z., Ovchinnikov S. G., Kushchenkov S. A.
Заглавие : Reflection electron-energy-loss spectroscopy of FexSi1-x thin films
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2008. - Vol. 34, Is. 5. - P381-383. - ISSN 1063-7850, DOI 10.1134/S1063785008050064
Примечания : Cited References: 13. - This study was supported within the framework of the “Spintronics” Program of the Department of Physics of the Russian Academy of Sciences (project no. 2007-3-1.3-24-01-286) and the Russian Foundation for Basic Research (project no. 07-03-00320)
Предметные рубрики: SCATTERING CROSS-SECTIONS
LOSS SPECTRA
QUANTITATIVE-ANALYSIS
SURFACE
Аннотация: The values of the product of the inelastic mean free path and the differential cross section for inelastic scattering of electrons have been determined from the reflection electron-energy-loss spectra of thin films of the FexSi1-x system (0
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Osipova I. V., Vnukova N. G., Glushchenko G. A., Krylov A. S., Tomashevich E. V., Zharkov S. M., Churilov G. N.
Заглавие : Nickel-containing carbon nanotubes and nanoparticles prepared in a high-frequency arc plasma
Коллективы : Russian Foundation for Basic Research [08-08-00521]; Integrated Interdisciplinary Project of the Siberian Branch of the Russian Academy of Sciences [12, 55]
Место публикации : Phys. Solid State. - 2009. - Vol. 51, Is. 9. - P.1972-1975. - ISSN 1063-7834, DOI 10.1134/S1063783409090339
Примечания : Cited References: 6. - This study was supported in part by the Russian Foundation for Basic Research (project no. 08-08-00521) and the Integrated Interdisciplinary Project of the Siberian Branch of the Russian Academy of Sciences (project no. 12, decree no. 55).
Предметные рубрики: SURFACE
Аннотация: This paper presents the results of an investigation of nickel-containing carbon nanostructures prepared by plasma-chemical synthesis in a carbon-helium plasma jet at atmospheric pressure with the arc fed by a high-frequency current. It is demonstrated that, under these conditions, the conversion of graphite into a carbon condensate reaches 98 wt % and the contents of carbon nanotubes and nickel in this condensate are 72 and 10 wt %, respectively. Sequential treatment with nitric and hydrochloric acids has made it possible to extract purified carbon nanotubes and nickel nanoparticles coated with a carbon shell (approximately 50 nm thick) in which the nickel content is 4 wt %. Data are presented on the diameters of the prepared nanotubes and on the state of carbon in the samples.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Atuchin V. V., Gavrilova T. A., Kesler V. G., Molokeev M. S., Aleksandrov K. S.
Заглавие : Structural and electronic parameters of ferroelectric K3WO3F3
Коллективы :
Место публикации : Solid State Commun. - 2010. - Vol. 150, Is. 43-44. - P.2085-2088. - ISSN 0038-1098, DOI 10.1016/j.ssc.2010.09.023
Примечания : Cited References: 34. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34).
Предметные рубрики: CORE-LEVEL SPECTROSCOPY
PHASE-TRANSITIONS
RHEED ANALYSIS
SURFACE
OXYFLUORIDE
ELPASOLITE
(NH4)(2)KWO3F3
SUBSTITUTION
TEMPERATURE
DIFFRACTION
Ключевые слова (''Своб.индексиров.''): ferroelectrics--chemical synthesis--electronic structure--photoelectron spectroscopies
Аннотация: The low-temperature ferroelectric G2 polymorph of K3WO3F3 oxyfluoride is formed by chemical synthesis. The electronic parameters of G2-K3WO3F3 have been measured by X-ray photoelectron spectroscopy under excitation with Al K alpha radiation (1486.6 eV). Detailed spectra have been recorded for all element core levels and Auger lines. The chemical bonding effects in the WO3 F-3 and WO6 octahedrons are considered by using the binding energy difference Delta BE(O-W) = BE(O 1s) BE(W 4f(7/2)). (C) 2010 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Parshin A. S., Kushchenkov S. A., Aleksandrova G. A., Ovchinnikov S. G.
Заглавие : New Opportunities for Quantitative Analysis as Applied to Reflected Electron Energy Loss Spectroscopy of Fe/Si Structures
Разночтения заглавия :авие SCOPUS: New opportunities for quantitative analysis as applied to reflected electron energy loss spectroscopy of Fe/Si structures
Место публикации : Tech. Phys. - 2011. - Vol. 56, Is. 5. - P.656-661. - ISSN 1063-7842, DOI 10.1134/S1063784211050264
Примечания : Cited References: 14. - This work was supported by the analytical target program "Development of Scientific Potential of Higher School" (project no. 2.1.1.3656); integration project at the Siberian and Far East Branches, Russian Academy of Sciences; program "Spintronics," Department of Physical Sciences, Russian Academy of Sciences; and federal target program "Scientific and Scientific-Pedagogical Personnel of Innovative Russia 2009-2013."
Предметные рубрики: LOSS SPECTRA
SURFACE
Аннотация: The feasibility of determining the elemental composition, chemical state, and element distribution across the depth in a subsurface region using the computer simulation of the electron inelastic scattering cross section is demonstrated with iron layers on silicon substrates. Analysis is carried out based on the dielectric theory and on the experimental determination of the product of the electron inelastic mean free path by the inelastic scattering cross section from reflected electron energy loss spectra.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Krasnov P. O., Kozhevnikova T. A., Popov M. N., Artyushenko P. V.
Заглавие : Peculiarities of the decoration of carbon nanotubes with transition metal atoms
Место публикации : Russ. J. Phys. Chem. B: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 5, Is. 1. - P163-167. - ISSN 1990-7931, DOI 10.1134/S1990793111010076
Примечания : Cited References: 12. - The authors thank Interdepartmental Supercomputer Center, Russian Academy of Sciences, for the possibility of using a cluster computer, and Siberian Federal University for providing a supercomputer, on which quantum-chemical calculations were performed. This work was financially supported by the Analytic Departmental Special-Purpose Program "The Development of the Scientific Potential of the Higher School (2009-2010)" (project no. 2.1.1/2584).
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
SURFACE
ENERGY
Ключевые слова (''Своб.индексиров.''): carbon nanotubes--decoration--transition metal atoms--carbon nanotubes--decoration--transition metal atoms
Аннотация: Carbon nanotubes decorated with transition metal, in particular, scandium, titanium, and vanadium, atoms offer promise for use in various applied science fields. We report the results of quantum-chemical calculations of the structure of the metallic layer of atoms of these metals coating the surface of (9, 0) and (10, 0) carbon nanotubes. It was shown that uniform one-layer coating by scandium and titanium could form on nanotubes with diameters no less than the diameter of (10, 0) nanotubes. Vanadium atoms could not uniformly cover nanotubes irrespective of their diameters.
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