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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Popov A. A., Vnukova N. G., Dudnik A. I., Glushchenko G. A., Samoylova N. A., Dubinina I. A., Gulyaeva U. E.
Заглавие : A method and apparatus for high-throughput controlled synthesis of fullerenes and endohedral metal fullerenes
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 42, Is. 5. - P.475-477. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785016050072
Примечания : Cited References: 9. - This work was supported by a grant of the Ministry of Science and Education of the Russian Federation, ID RFMEFI61314X0010, project no. 14.613.21.0010.
Предметные рубрики: Metallofullerenes
Plasma
Аннотация: A method for synthesis of carbon nanostructures in a high-frequency arc discharge in the flow of helium (3–4 L/min) is presented. It is shown that the plasma-chemical synthesis of fullerenes and endohedral metal fullerenes (EMFs) can be controlled by changing helium pressure in the chamber. Temperature and electron concentration along the line normal to the discharge axis decrease upon moving away from the axis to the periphery; the larger the pressure, the sharper is the decrease in these parameters. The optimal helium pressure of 98 kPa was found in obtaining the Gd@C82 EMF which corresponds to the maximal EMF yield of 5 wt %. © 2016, Pleiades Publishing, Ltd.
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2.

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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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) : Avramov P. V., Varganov S. A., Ovchinnikov S. G.
Заглавие : Atomic-core dynamics and the electronic structure of some endo- and exohedral complexes of fullerenes with light elements
Разночтения заглавия :us: Atomic-core dynamics and the electronic structure of some endo-and exohedral complexes of fullerenes with light elements
Место публикации : Phys. Solid State. - 2000. - Vol. 42, Is. 11. - P.2168-2175. - ISSN 1063-7834, DOI 10.1134/1.1324059
Примечания : Cited References: 39
Предметные рубрики: M-AT-C-60 ENDOHEDRAL COMPLEXES
MOLECULAR-DYNAMICS
PHASE-TRANSITION
AB-INITIO
SOLID C60
C-60
IONS
Аннотация: The atomic and electronic structure of some endo-, exo-, and endo-exohedral complexes of the fullerene C-60 with various guest atoms and molecules (He-n, H-2, and Li-2) are investigated using semiempirical and nonempirical quantum-chemical methods. The atomic core dynamics is studied by the method of molecular dynamics. It is shown that guest atoms and molecules in fullerene polyhedra acquire an orbital angular momentum due to the correlated motion of nuclei above the low-energy barriers of the potential surface within the carbon polyhedron even at low temperatures (from 4 to 78 K). The emergence of orbital angular momenta of nuclei of guest atoms and molecules is attributed to a change in the contribution of the orbital angular momentum of electrons to the potential surface of the complexes. The motion of Li ions in a polyhedron leads to blurring of the top of the valence band and to the emergence of a charge polarization wave in the carbon polyhedron. (C) 2000 MAIK "Nauka/Interperiodica".
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sorokin P.B., Avramov P.V., Demin V.A., Chernozatonskii L.A.
Заглавие : Beta-phase silicon nanowires: structure and properties
Коллективы : "Fullerenes and Atomic Clusters", Biennial International Workshop
Место публикации : 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009): July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст.P4.4. - С. 99
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vnukova N. G., Dudnik A. I., Komogortsev S. V., Velikanov D. A., Nemtsev I. V., Volochaev M., Osipova I. V., Churilov G. N.
Заглавие : Carbon coated nickel nanoparticles produced in high-frequency arc plasma at ambient pressure
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : J. Magn. Magn. Mater.: Elsevier Science, 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P.164-166. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2016.12.142. - ISSN 1873-4766(eISSN)
Примечания : Cited References:10. - The work was supported by Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement No 14.613.21.0010, ID RFMEFI61314X0010).
Предметные рубрики: FULLERENES
NI3C
Ключевые слова (''Своб.индексиров.''): nanoparticles--carbon--nickel
Аннотация: The nickel particles with the mean size about 10-20 nm coated with carbon were extracted by the treatment of the carbon condensate with nitric and hydrochloric acids. The initial carbon condensate containing nickel nanoparticles with a graphite conversion was synthesized in the high-frequency carbon-helium arc plasma at ambient pressure with the nickel nanoparticles as a catalyst. The nickel content in the nanoparticles was 84.6 wt %. Magnetic properties of the nanoparticles are characterized by the high hysteresis and thermal stability. The sample of compacted nanoparticles is characterized by electrical resistance much higher than it in of compacted initial condensate.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Novikov P. V., Churilov G. N.
Заглавие : Characteristics of the heating dynamics of a graphite conductor taking into account the skin effect
Место публикации : Tech. Phys.: AMER INST PHYSICS, 2000. - Vol. 45, Is. 9. - P1214-1218. - ISSN 1063-7842, DOI 10.1134/1.1318113
Примечания : Cited References: 13
Предметные рубрики: FULLERENES
C-60
SPECTRA
Аннотация: Calculations for a one-dimensional model of RF heating of a cylindrical graphite conductor have been carried out. The heating dynamics are analyzed in the general form. Conductor temperature profiles and the times for heating up to the graphite sublimation temperature as a function of current and frequency have been obtained. A model of conductor heating with partial return of the energy irradiated by the conductor surface has been considered. Frequency and current ranges have been determined to carry out this graphite sublimation method in a chamber with reflecting walls. The problem is associated with carbon vapor production and subsequent synthesis of fullerenes and other carbon structures. (C) 2000 MAIK "Nauka/ Interperiodica".
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dudnik A. I., Osipova I. V., Nikolaev N. S., Churilov G. N.
Заглавие : Comparative analysis of two methods for synthesis of fullerenes at different helium pressures
Коллективы : RFBRRussian Foundation for Basic Research (RFBR) [18-32-20011]
Место публикации : Fuller. Nanotub. Carbon Nanostruct. - 2020. - Vol. 28, Is. 9. - P.697-701. - ISSN 1536-383X, DOI 10.1080/1536383X.2020.1746281. - ISSN 1536-4046(eISSN)
Примечания : Cited References: 16. - The reported study was funded by RFBR according to the research project No 18-32-20011
Предметные рубрики: PLASMA
YIELD
DISCHARGE
PARAMETERS
DEPENDENCE
C60
Аннотация: The results of the effect of helium pressure in the chamber on the amount and composition of the produced fullerenes (C60, C70, etc.) synthesized in the arc plasma with graphite electrodes are presented. The findings obtained when the arc is powered by a direct (DC) and alternating (AC) currents of low frequency were compared in the same chamber with the electrodes located at the same angle to each other. These two methods are drastically different. The complete conversion of graphite into fullerene soot in AC occurs, but a part of the graphite is converted into a cathode deposit that does not contain fullerenes in DC, the relative amount of which increases when decreasing the helium pressure in the chamber. The highest fullerene content in fullerene soot of 10.2 wt.% is produced at a pressure of 127.5 kPa in AC arc, but in DC arc, the highest content of fullerenes in fullerene soot of 8.3 wt.% is produced at a pressure of 33.3 kPa.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Popov A. A., Vnukova N. G., Dudnik A. I., Samoylova N., Glushenko G. A.
Заглавие : Controlled synthesis of fullerenes and endohedral metallofullerenes in high frequency arc discharge
Место публикации : Fuller. Nanotub. Carbon Nanostruct.: Taylor and Francis, 2016. - Vol. 24, Is. 11. - P.675-678. - ISSN 1536383X (ISSN), DOI 10.1080/1536383X.2016.1207062
Примечания : Cited References: 16. - The work is supported by the Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement № 14.613.21.0010, ID RFMEFI61314X0010).
Ключевые слова (''Своб.индексиров.''): fullerene--endohedral metallofullerenes--high frequency arc discharge--pressure--mass spectrum
Аннотация: The article presents the high-frequency arc discharge setup operating in helium atmosphere and applicable for the syntheses of carbon condensate with different dispersion and structure, along with fullerenes and endohedral metallofullerenes. It also highlights how the change of helium pressure in chamber can control the amount and composition of products in carbon condensate. The setup can be applied for the purposes of analysis, for instance in order to obtain information about the process of fullerenes and endohedral met-allofullerenes formation. Also, the fact that the yield of higher fullerenes is increasing with the pressure rise, whereas the yield of endohedral metallofullerenes is decreasing suggests different formation mechanisms. © 2016 Taylor & Francis Group, LLC.
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10.

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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