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Общее количество найденных документов : 26
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrakovskaya E. A., Bulina N. V., Churilov G. N., Puzyr' A. P.
Заглавие : A study of the synthesis products of fullerenes with nickel and cobalt
Место публикации : Tech. Phys.: AMER INST PHYSICS, 2001. - Vol. 46, Is. 1. - P42-46. - ISSN 1063-7842, DOI 10.1134/1.1340883
Примечания : Cited References: 15
Предметные рубрики: COMPLEXES
SPECTRA
Аннотация: Qualitative analysis of the products of plasmochemical synthesis of fullerenes with metallic nickel and cobalt has been carried out using electron paramagnetic resonance (EPR) and electron microscopy. These studies show that the synthesis products are mainly fullerenes, metallic nanoparticles coated with an insulating layer, and isolated atomic clusters. (C) 2001 MAIK "Nauka/Interperiodica".
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulina N. V., Bondarenko G. V., Marachevsky A.V., Chekanova L. A., Prokof'ev D. E., Churilov G. N., Gromyko A. I.
Заглавие : About iron globules formed at cooling of iron-contained plasma
Место публикации : Phys. Metals Metallogr. - New York: MAIK Nauka/Interperiodica/Springer, 2006. - Vol. 102. - С. S94-S95. - ISSN 0031-918X, DOI 10.1134/S0031918X06140249
Примечания : Cited Reference Count: 4
Аннотация: This paper is devoted to the investigation of iron globules that are formed during cooling of the iron-carbon-helium plasma and as a result of destruction of a natural ball lightning. Scanning electron microscopy, X-ray fluorescence, X-ray diffraction, and ferromagnetic resonance investigations were carried out. The magnetization values of the samplers were determined.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulina N. V., Lopatin V. A., Vnukova N. G., Osipova I. V., Churilov G. N., Krtschmer W.
Заглавие : Arc synthesis of silicon-doped heterofullerenes in plasma at atmospheric pressure
Место публикации : Fullerenes Nanotubes and Carbon Nanostructures: Marcel Dekker Inc., 2007. - Т. 15, № 5. - С. 395-400. - ISSN 1536-383X, DOI 10.1080/15363830701512229. - ISSN 1536-4046(eissn)
ГРНТИ : 31
РИНЦ
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova N. B., Kazak N. V., Michel C. R., Balaev A. D., Ovchinnikov S. G., Vasil'ev A. D., Bulina N. V., Panchenko E. B.
Заглавие : Effect of strontium and barium doping on the magnetic state and electrical conductivity of GdCoO3
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007. - Vol. 49, Is. 8. - P1498-1506. - ISSN 1063-7834, DOI 10.1134/S1063783407080161
Примечания : Cited References: 36
Предметные рубрики: PEROVSKITE
ORDER
OXIDE
BEHAVIOR
GLASSES
LACOO3
PR
GD
SM
ND
Аннотация: A coordinated investigation of the magnetic and electrical properties of polycrystalline cobalt oxide compounds CdCoO3, Gd0.9Ba0.1CoO3, and Gd0.9Sr0.1CoO3 is carried out. Undoped GdCoO3 reveals a low conductivity; a magnetic moment of 7.4 mu(B) per molecule, which is less than the theoretical value for the Gd3+ ion; and an asymptotic Curie temperature of -6 K. Doping GdCoO3 with barium and strontium to substitution of 10 at. % Gd brings about an increase in the conductivity and magnetic transitions at T = 300 K for Gd0.9Ba0.1CoO3 and T = 170 K for Gd0.9Sr0.1CoO3. The magnetization anomalies imply the formation of magnetic clusters. The behavior of the electrical conductivity at high temperatures suggests a variable activation energy. At low temperatures, Mott hopping conduction sets in.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Novikov P. V., Lopatin V. A., Vnukova N. G., Bulina N. V., Bachilo S. M., Tsyboulski D., Weisman R. B.
Заглавие : Electron density as the main parameter influencing the formation of fullerenes in a carbon plasma
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2002. - Vol. 44: 5th International Workshop on Fullerence and Atomic Clusters (JUL 02-06, 2001, ST PETERSBURG, RUSSIA), Is. 3. - P419-423. - ISSN 1063-7834, DOI 10.1134/1.1462659
Примечания : Cited References: 8
Аннотация: Thermodynamic estimates are presented for the formation of spheroidal and flat carbon clusters from reactant species of different charges. Charge is shown to strongly influence the geometry and stability of flat clusters. Changes in the charge of flat clusters can promote both their folding to spheroidal structures and their dissociation. It is concluded that the fluctuations of electron concentration in carbon plasmas can result in the accumulation of fullerene clusters and the dissociation of flat clusters. (C) 2002 MAIK "Nauka / Interperiodica".
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Semenov A. P., Semenova I. A., Bulina N. V., Krylov A. S., Churilov G. N., Semenova A. A.
Заглавие : Fullerene films deposited by evaporation in vacuum using spot-focused annular electron beam
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2005. - Vol. 31, Is. 12. - P1036-1038. - ISSN 1063-7850, DOI 10.1134/1.2150891
Примечания : Cited References: 9
Аннотация: A rapidly focused annular electron beam can provide for the effective evaporation of a fullerene mixture in a vacuum of similar to 10(-2) Pa. A 1-kW beam focused into a spot within 0.1-1 s produces explosive evaporation of a fullerene target at an extremely high efficiency of heating. A comparison of the Raman and electronic absorption spectra of the initial fullerene powder and a film deposited upon its evaporation shows that C-60 and C-70 fullerenes are evaporated without rupture of C-C covalent bonds. The electron beam evaporation in vacuum has been successfully used to obtain fullerene films on substrates with an area of similar to 0.1 m(2). (C) 2005 Pleiades Publishing, Inc.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Kostinevich E. M., Marchenko S. A., Glushchenko G. A., Bulina N. V., Zaitsev A. I., Vnukova N. G.
Заглавие : Hydrogen sorption by carbon-based substances formed in carbon-helium plasma
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2005. - Vol. 31, Is. 3. - P233-234. - ISSN 1063-7850, DOI 10.1134/1.1894442
Примечания : Cited References: 7
Аннотация: Hydrogen sorption by various carbonaceous products formed during arc discharge in carbon-helium plasma has been studied. The main product fractions included a fullerene-containing soot, a fullerene mixture extract, a condensate containing carbon nanotubes, and carbonized aluminum oxide. Molecular hydrogen is most effectively sorbed by single-wall carbon nanotubes contained in the carbon condensate fraction. (C) 2005 Pleiades Publishing, Inc.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Osipova I. V., Tomashevich Y. V., Glushchenko G. A., Fedorov A. S., Popov Z. I., Bulina N. V., Vereshchagin S. N., Zhizhaev A. M., Cherepakhin A. V.
Заглавие : Hydrogenation of the Nanopowders That Form in a Carbon-Helium Plasma Stream during the Introduction of Ni and Mg
Разночтения заглавия :авие SCOPUS: Hydrogenation of the nanopowders that form in a carbon-helium plasma stream during the introduction of ni and Mg
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 113, Is. 6. - P1057-1062. - ISSN 1063-7761, DOI 10.1134/S1063776111140135
Примечания : Cited References: 9. - This work was supported by the Russian Foundation for Basic Research, project no. 09-03-00383-a.
Ключевые слова (''Своб.индексиров.''): carbon atoms--composite nanoparticles--high temperature--hydrogen absorption--hydrogen atoms--island growth--magnesium hydride--magnesium surface--nano powders--nickel atoms--plasma streams--atoms--carbon--composite materials--density functional theory--electron beams--helium--hydrogen--hydrogenation--nanoparticles--nickel--scanning electron microscopy--thermogravimetric analysis--x ray photoelectron spectroscopy--magnesium
Аннотация: Composite nanoparticles consisting of magnesium, nickel, and carbon atoms are studied both theoretically and experimentally. The calculations performed in terms of the density functional theory show that the jump frequency of hydrogen atoms in nickel-containing magnesium hydride increases substantially near impurity nickel atoms; as a result, the rate of hydrogen absorption by magnesium also increases. Nickel on the magnesium surface is shown to be absorbed via an island growth mechanism. Composite Mg-C, Ni-C, and Mg-Ni-C powders are produced by plasmachemical synthesis in a carbon-helium plasma stream. Hydrogen is introduced into a chamber during synthesis. It is found by X-ray photoelectron spectroscopy and thermogravimetric analysis that, among these three composites, only Mg-Ni-C contains magnesium fixed in the MgH2 compound. The process of such "ultrarapid" hydrogenation of magnesium, which occurs in the time of formation of composite nanoparticles, can be explained by the catalytic action of nickel, which is enhanced by a high temperature. Scanning electron microscopy micrographs demonstrate the dynamics of the dehydrogenation of Mg-Ni-C composite nanoparticles in heating by an electron beam.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Denisova E. A., Balaev A. D., Myagkov V. G., Bulina N. V., Kudashov A. G., Okotrub A. V.
Заглавие : Magnetic anisotropy in the films of oriented carbon nanotubes filled with iron nanoparticles
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2005. - Vol. 31, Is. 6. - P454-456. - ISSN 1063-7850, DOI 10.1134/1.1969761
Примечания : Cited References: 5
Предметные рубрики: FE
Аннотация: Films of carbon nanotubes oriented perpendicularly to the substrate surface and filled with iron nanoparticles have been synthesized and studied. Morphological features of these nanocomposite films lead to the appearance of an easy magnetization axis, which is perpendicular to the film plane. A method for enhancement of this effect is suggested and successfully tested. (C) 2005 Pleiades Publishing, Inc.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Petrakovskaya E. A., Isakova V. G., Velikanov D. A., Bulina N. V., Glushchenko G. A., Novikov P. V., Churilov G. N.
Заглавие : Magnetic properties of Pt and Ir nanoparticles
Место публикации : Nanomaterials; new research developments. Hardcover/ Ed. by Pertsov E.I. Nova Science Publishers. - 2008. - С. 21-36. - ISBN 978-1-60456-300-9
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