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Redox potentials of gold-palladium powders in aqueous solutions of H2PdCl4 / O. V. Belousov [et al.] // Russ. J. Phys. Chem. A. - 2012. - Vol. 86, Is. 3. - P. 484-488, DOI 10.1134/S0036024412020070. - Cited References: 26 . - ISSN 0036-0244

РУБ Chemistry, Physical + Powders
Рубрики:
BIMETALLIC NANOPARTICLES
   METALLIC PALLADIUM
   COPPER
   ELECTRODE
   BLACK
   Bimetallic particles
   Bimetallic powders
   Gold-palladium
   Hydrochloric acid solution
   Nernst equation
   Redox potentials
   Gold
   Hydrochloric acid
   Redox reactions
   Secondary batteries
   Transmission electron microscopy
   X ray diffraction analysis
Кл.слова (ненормированные):
bimetallic powders -- gold-palladium -- redox potential
Аннотация: The redox potential of fine-dispersed and compact bimetallic powders of the palladium-gold system in hydrochloric acid solutions of H2PdCl4 at a temperature of 60A degrees C was studied. It was found that the redox potential increases with gold enrichment of the solid solution in accordance with the Nernst equation. The effect of gold-palladium particle size on this redox potential is shown. The morphology, sizes, and composition of bimetallic particles are determined via transmission electron microscopy and X-ray diffraction analysis.

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Публикация на русском языке Окислительно-востановительные потенциалы золото-палладиевых порошков в водных растворах H2PdCl4 [Текст] / О. В. Белоусов [и др.] // Журн. физ. химии : Наука, 2012. - Т. 86 № 3. - С. 557-562

Держатели документа:
[Belousov, O. V.
Borisov, R. V.
Parfenov, V. A.
Dorokhova, L. I.] Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660041, Russia
[Zharkov, S. M.] Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Zharkov, S. M.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Belousov, O. V.; Borisov, R. V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Parfenov, V. A.; Dorokhova, L. I.
}
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Synthesis and structural properties of cubic G0-Rb2KMoO3F3 oxyfluoride / V. V. Atuchin [et al.] // Ceram. Int. - 2012. - Vol. 38, Is. 3. - P. 2455-2459, DOI 10.1016/j.ceramint.2011.11.013. - Cited References: 23. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34). . - ISSN 0272-8842

РУБ Materials Science, Ceramics
Рубрики:
PHASE-TRANSITIONS
   FERROELECTRIC K3WO3F3
   (NH4)(3)MOO3F3
   TEMPERATURE
   PEROVSKITE
   ELPASOLITE
   CRYSTALS
   BEHAVIOR
   High temperature
   Melt solidification
   Micromorphologies
   Melt solidification
   Microstructure-final
   Oxyfluorides
   Space Groups
   Oxyfluorides
   X ray methods
Кл.слова (ненормированные):
Powders: solid state reaction -- Microstructure-final -- X-ray methods -- Alkali oxides -- Halides
Аннотация: High-temperature G0 polymorph of Rb2KMoO3F3 has been prepared by melt solidification. Micromorphology and chemical properties of the final product were evaluated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The elpasolite-related crystal structure of G0-Rb2KMoO3F3 has been refined by Rietveld method at T = 298 K (space group Fm-3m, a = 8.92446(8) Å, V = 710.76(1) Å3; RB = 3.55%). Ferroelectric G1-Rb2KMoO3F3 polymorph, earlier reported at T˂328 K, is not found at T = 298 K.

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Держатели документа:
[Atuchin, V. V.] SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090 90, Russia
[Gavrilova, T. A.] SB RAS, Inst Semicond Phys, Lab Nanolithog & Nanodiagnost, Novosibirsk 630090 90, Russia
[Isaenko, L. I.
Zhurkov, S. A.] SB RAS, Inst Geol & Mineral, Lab Crystal Growth, Novosibirsk 530090 90, Russia
[Kesler, V. G.] SB RAS, Inst Semicond Phys, Lab Phys Principles Integrated Microelect, Novosibirsk 630090 90, Russia
[Molokeev, M. S.] SB RAS, Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036 36, Russia

Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Isaenko, L. I.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhurkov, S. A.
}
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Анализ фазового состава порошков сплава СО–P на основе магнитометрических измерений / Л. А. Чеканова [и др.] // Физ. металлов и металловед. - 2013. - Т. 114, Вып. 2. - С. 136-143DOI 10.7868/S0015323013020046
Кл.слова (ненормированные):
фазовый анализ -- многофазные сплавы -- характеризация материалов -- магнитные сплавы
Аннотация: Предложен новый метод количественной оценки фазового состава многофазного ферромагнитного сплава, основанный на измерениях зависимостей намагниченности от температуры и внешнего поля. Проведена характеризация фазового состава ультрадисперсных порошков Co–P. Построены фазовые диаграммы неравновесных твердых растворов Co–P в координатах размер частиц – концентрация фосфора.

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Переводная версия Analysis of phase composition of Co-P alloy powders using magnetometric data. - [Б. м. : б. и.]

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Чеканова, Лидия Александровна; Chekanova, L. A.; Денисова, Елена Александровна; Denisova, E. A.; Гончарова, О. А.; Комогорцев, Сергей Викторович; Komogortsev, S. V.; Исхаков, Рауф Садыкович; Iskhakov, R. S.
}
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Analysis of phase composition of Co-P alloy powders using magnetometric data / L. A. Chekanova [et al.] // Phys. Metals & Metallogr. - 2013. - Vol. 114. Is. 2. - P. 122-128DOI 10.1134/S0031918X1302004X
Аннотация: A new method for the quantitative estimate of the phase composition of a multiphase ferromagnetic alloy is suggested that is based on measuring the temperature and field dependences of the magnetization. The phase composition of ultrafine Co-P powders is characterized. Phase diagrams of nonequilibrium Co-P solid solutions are constructed on particle size, i.e., the phosphorus concentration coordinates.

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Публикация на русском языке Анализ фазового состава порошков сплава СО–P на основе магнитометрических измерений. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Technol Univ, Krasnoyarsk 660049, Russia

Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Denisova, E. A.; Денисова, Елена Александровна; Goncharova, O. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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    Плазменный методы получения пористых порошков магния с высокой сорбционной емкостью по водороду и устойчивостью к рециклированию / Е. И. Мельникова [и др.] // Восьмая междунар. конф. "Матер. и покрытия в экстрем. условиях: исслед., прим., экологически чистые технол. произв-ва и утилизации изделий" : Тез. конф. - 2014. - P. 67
   Перевод заглавия: Plasma method for producing porous magnesium powders with a high hydrogen sorption capacity and recycling resistance

Материалы конференции
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Мельникова, Е. И.; Колоненко, Андрей Леонидович; Kolonenko, A. L.; Глущенко, Гарий Анатольевич; Glushchenko, G. A.; Осипова, Ирина Владимировна; Osipova, I. V.; Чурилов, Григорий Николаевич; Churilov, G. N.; Национальная Академия наук Украины; Российская академия наук; Национальная Академия наук Беларуси; Украинское материаловедческое общество; Институт проблем материаловедения им. И.Н. Францевича НАН Украины; Институт высоких температур РАН; Московский государственный технический университет им. Н.Э. Баумана; Институт тепло- и массообмена им. А.В. Лыкова НАН Беларуси; ИНТЕМ, ООО"Материалы и покрытия в экстремальных условиях: исследования, применение, экологически чистые технологии производства и утилизации изделий", международная конференция (8 ; 22-26 сент. 2014 г. ; Киев); "Materials and Coatings for Extreme Performances: Investigations, Applications, Ecologically Safe Technologies for Their Production and Utilization", International Conference (8 ; 22-26 Sept. 2014 ; Kiev, Ukraine)
}
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    The suppression of demagnetizing field heterogeneity / R. N. Yaroslavtsev [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 629-632, DOI 10.4028/www.scientific.net/SSP.233-234.629 . - ISSN 1662-9779. - ISSN 978-3-038
   Перевод заглавия: Подавление неоднородности размагничивающих полей в ферромагнитных порошках
Рубрики:
Achievements in magnetism
Кл.слова (ненормированные):
demagnetizing field -- ferromagnetic resonance -- electroless powders
Аннотация: The two ways of reducing the dispersion of the demagnetizing fields in magnetic powders of cobalt alloys have been tested: the isolation of magnetic particles in nonmagnetic matrix and compaction of the powders. The ferromagnetic resonance (FMR) and the hysteresis loops of the pretreated magnetic powders were investigated. The FMR linewidth is significantly narrowed both with increasing of the nonmagnetic fraction in the samples prepared by the first way and with increasing of relative density of the compacts. The limit case of FMR linewidth in continuous magnetic film there is no dispersion of the demagnetizing fields is in good agreement with discussed data. The hysteresis loops of powder with the particles coated by the non-magnetic phase became narrow and easy saturated with increasing of nonmagnetic phase fraction.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; Denisova, E. A.; Денисова, Елена Александровна; Li, O. A.; Ли О.А.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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Operation of demagnetizing field effect in magnetic studies of ferromagnetic powders / R. N. Yaroslavtsev [et al.] // Moscow Int. Symp. on Magnet. (MISM-2014) : 29 June - 3 July 2014 : вook of abstracts. - 2014. - Ст. 1PO-I1-28. - P. 463 . - ISBN 978-5-91978-025-0

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Доп.точки доступа:
Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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Temperature behavior of magnetization in multiphase Co powders in unsaturated regime / O. A. Li [et al.] // Moscow Int. Symp. on Magnet. (MISM-2014) : 29 June - 3 July 2014 : вook of abstracts. - 2014. - Ст. 1PO-I1-34. - P. 469 . - ISBN 978-5-91978-025-0

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Доп.точки доступа:
Li, O. A.; Ли О.А.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Chekanova, L. A.; Чеканова, Лидия Александровна; Eremin, E. V.; Еремин, Евгений Владимирович; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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    Temperature behavior of magnetization in multiphase Co-P powders in unsaturated regime / O. A. Li [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 522-525, DOI 10.4028/www.scientific.net/SSP.233-234.522 . - ISSN 1662-9779. - ISSN 978-3-038
   Перевод заглавия: Температурный ход намагниченности в многофазных порошках Со-Р в режиме неполного насыщения
Рубрики:
Achievements in magnetism
Кл.слова (ненормированные):
ferromagnetic powder -- local magnetic anisotropy -- nanocorundum -- nanodiamond
Аннотация: In this paper we have proposed a modified expression for the fitting M(T) data in Co-P powders with nanocorundum and nanodiamond precipitates. The expression for M(T) takes into account the effects from both thermal magnetic excitations – Bloch’s T 3/2 law and temperature dependence of the magnetic anisotropy. The fitting parameters are spontaneous magnetization at absolute zero temperature, Bloch constant and order of magnetic anisotropy constant. The obtained Bloch constant is in good agreement with literature data. The order of magnetic anisotropy constant is found to be about 3 that is surprising result and supposedly comes from multiphase nature of the investigated Co-P powder.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Li, O. A.; Ли О. А.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Chekanova, L. A.; Чеканова, Лидия Александровна; Eremin, E. V.; Еремин, Евгений Владимирович; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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10.

Hydrogenation of the Nanopowders That Form in a Carbon-Helium Plasma Stream during the Introduction of Ni and Mg / G. N. Churilov [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 6. - P. 1057-1062, DOI 10.1134/S1063776111140135. - Cited References: 9. - This work was supported by the Russian Foundation for Basic Research, project no. 09-03-00383-a. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
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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Держатели документа:
[Churilov, G. N.
Osipova, I. V.
Glushchenko, G. A.
Fedorov, A. S.
Popov, Z. I.
Cherepakhin, A. V.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Tomashevich, Ye. V.
Vereshchagin, S. N.
Zhizhaev, A. M.] Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia
[Bulina, N. V.] Russian Acad Sci, Siberian Branch, Inst Solid State Chem & Mechanochem, Novosibirsk 630128, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, ul. K. Marksa 42, Krasnoyarsk, 660049, Russian Federation
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russian Federation

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Osipova, I. V.; Осипова, Ирина Владимировна; Tomashevich, Y. V.; Томашевич, Евгений Владимирович; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Fedorov, A. S.; Федоров, Александр Семенович; Popov, Z. I.; Попов, Захар Иванович; Bulina, N. V.; Булина, Наталья Васильевна; Vereshchagin, S. N.; Zhizhaev, A. M.; Cherepakhin, A. V.; Черепахин, Александр Владимирович
}
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11.

Heat capacity of a mixed-valence manganese oxide Pb(3)Mn(7)O(15) / N. V. Volkov [et al.] // J. Phys.: Condens. Matter. - 2008. - Vol. 20, Is. 44. - Ст. 445214, DOI 10.1088/0953-8984/20/44/445214. - Cited References: 11. - This study was supported by the INTAS (project No 061000013-9002), the Division of Physical Sciences of RAS, program `Spin-dependent Effects in Solids and Spintronics' (project No. 2.4.2 of SB RAS), the President of the Russian Federation, grant for Support of Leading Scientific Schools (project No. NSh-1011.2008.2), KRSF-RFBR `Enisey2007', project No. 07-02-96801-a, and the Siberian Branch of RAS, Integration project No. 3.7. . - ISSN 0953-8984

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
Antiferromagnetism -- Crystallography -- Entropy -- Lead alloys -- Magnetic materials -- Magnetism -- Manganese -- Manganese compounds -- Powders -- Single crystals -- Specific heat -- Spin dynamics -- Antiferromagnetic orders -- Charge localizations -- Entropy losses -- Excess heat capacities -- Experimental datums -- Heat capacities -- Magnetic contributions -- Magnetic orders -- Magnetic states -- Magnetic subsystems -- Magnetic transitions -- Manganese oxides -- Nonmagnetic -- Spin systems -- Temperature curves -- Temperature dependences -- Temperature intervals -- Temperature ranges -- Manganese alloys
Аннотация: We present the results of a heat capacity study of Pb(3)Mn(7)O(15) single crystals with approximately equal concentrations of Mn(3+) and Mn(4+) ions. In the temperature interval between 210 and 260 K, an excess heat capacity of nonmagnetic origin, most likely associated with the process of charge localization, has been observed. Also, three pronounced anomalies corresponding to the changes in a magnetic subsystem of the crystal have been observed in the temperature dependence of the heat capacity. A broad hump near 150 K is related to the formation of a short-range magnetic order. This process of short-range ordering is rather prominent, considering the appreciable value of the entropy loss accompanying the change in the magnetic state. A clear lambda-shaped peak at 70 K marks the onset of a long-range antiferromagnetic order. Another anomalous contribution to the heat capacity of magnetic origin has been revealed at temperatures below 20 K. This contribution is associated with a magnetic transition of an unknown nature, which is also clearly evident in magnetization versus temperature curves. The total magnetic contribution to the entropy deduced from the actual experimental data over the entire temperature range is much smaller than is expected for a completely ordered Mn spin system in the crystal. We suggest several possible reasons that may account for this `missing' entropy.

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Держатели документа:
[Volkov, N. V.
Sablina, K. A.
Eremin, E. V.
Flerov, I. N.
Kartashev, A.] RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Flerov, I. N.] Siberian Fed Univ, Dept Phys, Krasnoyarsk 660041, Russia
[Boeni, P.] Tech Univ Munich, Dept Phys E21, D-85747 Garching, Germany
[Shah, V. R.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
[Rasch, J. C. E.
Boehm, M.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[Rasch, J. C. E.
Schefer, J.] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Rasch, J. C. E.
Schefer, J.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
ИФ СО РАН
Kirensky Institute of Physics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Department of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russian Federation
Physics Department E21, Technical University of Munich, D-85747 Garching, Germany
Physics Department, Indiana University, Bloomington, IN 47405, United States
Institut Laue-Langevin, 6 rue Jules Horowitz, 38042 Grenoble, Cedex 9, France
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна; Eremin, E. V.; Еремин, Евгений Владимирович; Boni, P.; Shah, V. R.; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A.; Rasch, JCE; Boehm, M.; Schefer, J.
}
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12.

Small-Angle Light Scattering from Polymer-Dispersed Liquid-Crystal Films / V. A. Loiko [et al.] // J. Exp. Theor. Phys. - 2008. - Vol. 107, Is. 4. - P. 692-698, DOI 10.1134/S1063776108100178. - Cited References: 20 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
NEMATIC DROPLETS
Кл.слова (ненормированные):
ABS resins -- Angular distribution -- Drop formation -- Drops -- Light -- Light scattering -- Phase transitions -- Plastic films -- Polymer films -- Polymers -- Polynomial approximation -- Powders -- Angle light scatterings -- Anomalous diffractions -- Crystal films -- Cylindrical symmetries -- Droplet sizes -- Induced phase transitions -- Optical wavelengths -- PDLC films -- Scattered lights -- Scattering approximations -- Single layers -- Liquid crystal polymers
Аннотация: A method is developed for modeling and computing the angular distribution of light scattered forward from a single-layer polymer-dispersed liquid-crystal (PDLC) film. The method is based on effective-medium approximation, anomalous diffraction approximation, and far-field single-scattering approximation. The angular distribution of forward-scattered light is analyzed for PDLC films with droplet size larger than the optical wavelength. The method can be used to study field- and temperature-induced phase transitions in LC droplets with cylindrical symmetry by measuring polarized scattered light intensity.

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Держатели документа:
[Loiko, V. A.
Konkolovich, A. V.
Misckevich, A. A.] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk 220072, Byelarus
[Maschke, U.] Univ Sci & Technol Lille, Lab Chim Macromol, F-59655 Villeneuve Dascq, France
[Zyryanov, V. Ya.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk 220072, Belarus
Laboratoire de Chimie Macromoleculaire, Universite des Sciences et Technologies de Lille, Villeneuve d'Ascq Cedex F-59655, France
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Loiko, V. A.; Maschke, U.; Zyryanov, V. Y.; Зырянов, Виктор Яковлевич; Konkolovich, A. V.; Misckevich, A. A.
}
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13.

High-pressure magnetic properties and P-T phase diagram of iron borate / A. G. Gavriliuk [et al.] // J. Exp. Theor. Phys. - 2005. - Vol. 100, Is. 4. - P. 688-696, DOI 10.1134/1.1926429. - Cited References: 24 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
FEBO3 SINGLE-CRYSTALS
   NUCLEAR-RESONANCE
   BAND-STRUCTURE
   TRANSITION
   TEMPERATURE
   SCATTERING
Кл.слова (ненормированные):
Antiferromagnetic materials -- Diamonds -- Ferromagnetic materials -- High pressure effects -- Low temperature effects -- Magnetic moments -- Magnetic properties -- Magnetization -- Phase diagrams -- Powders -- Single crystals -- Synchrotron radiation -- Diamond anvil cells -- Electronic transition -- Iron borate -- Nuclear forward scattering (NFS) -- Iron compounds
Аннотация: The high-pressure magnetic states of iron borate (FeBO3)-Fe-57 single-crystal and powder samples have been investigated in diamond anvil cells by nuclear forward scattering (NFS) of synchrotron radiation at different temperatures. In the low-pressure (0 < P < 46 GPa) antiferromagnetic phase, an increase of the Neel temperature from 350 to 595 K induced by pressure was found. At pressures 46-49 GPa, a transition from the antiferromagnetic to a new magnetic state with a weak magnetic moment (magnetic collapse) was discovered. It is attributed to the electronic transition in Fe3+ ions from the high-spin 3d(5) (S = 5/2, (6)A(1g)) to the low-spin (S = 1/2, T-2(2g)) state (spin crossover) due to the insulator-semiconductor-type transition with extensive suppression of strong d-d electron correlations. At low temperatures, NFS spectra of the high-pressure phase indicate magnetic correlations in the low-spin system with a magnetic ordering temperature of about 50 K. A tentative magnetic P-T phase diagram of FeBO3 is proposed. An important feature of this diagram is the presence of two triple points where magnetic and paramagnetic phases of the high-spin and low-spin states coexist. © 2005 Pleiades Publishing, Inc.

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Держатели документа:
Inst High Pressure Phys, Troitsk 142190, Moscow Oblast, Russia
Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia
Russian Acad Sci, Siberian Div, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute for High-Pressure Physics, Troitsk, Moscow oblast, 142190, Russian Federation
Institute of Crystallography, Russian Academy of Sciences, Moscow, 119333, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gavriliuk, A. G.; Trojan, I. A.; Lyubutin, I. S.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Sarkissian, V. A.
}
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14.

Accelerated mechanical alloying of mutually insoluble metals: Co-Cu system / R. S. Iskhakov [et al.] // Tech. Phys. Lett. - 2004. - Vol. 30, Is. 1. - P. 60-63, DOI 10.1134/1.1646717. - Cited References: 11 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
SOLID-SOLUTIONS
P ALLOYS
POWDERS
Аннотация: We propose a new method for accelerating the process of mechanical alloying in the Co-Cu system possessing positive enthalpy of mixing and exhibiting no mutual solubility of components under equilibrium conditions. For this purpose, highly disperse powders of composite particles representing a Co-P amorphous alloy core covered with a nanocrystalline copper shell were prepared by chemical deposition. These composite powders were mechanically alloyed by processing in a ball mill. Investigation of the atomic structure and magnetic properties of the composite powders upon milling showed that the formation of supersaturated Co-Cu solid solutions under such conditions requires a much shorter milling time as compared to that for the conventional mechanical alloying processes. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Irkutsk State Univ Railway Commun, Krasnoyarsk Branch, Krasnoyarsk, Russia
Russian Acad Sci, Siberian Div, Inst Chem & Chem Technol, Krasnoyarsk, Russia
ИФ СО РАН
ИХХТ СО РАН

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Denisova, E. A.; Денисова, Елена Александровна; Balaev, A. D.; Балаев, Александр Дмитриевич; Mal'tsev, V. K.; Maltsev, V. K.; Bondarenko, G. N.; Бондаренко, Галина Николаевна
}
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15.

Iskhakov, R. S.
Width of the ferromagnetic resonance line in highly dispersed powders of crystalline and amorphous Co-P alloys / R. S. Iskhakov, L. A. Chekanova, E. A. Denisova // Phys. Solid State. - 1999. - Vol. 41, Is. 3. - P. 416-419, DOI 10.1134/1.1130794. - Cited References: 12 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:

Аннотация: The resonance characteristics (inhomogeneous FMR linewidth Delta H) in highly dispersed (d=0.1-3 mu m) powders of crystalline and amorphous Co-P alloys are investigated as a function of the composition, particle size, and atomic structure. It is established that Delta H for powders of amorphous Co-P alloys is two to three times larger than Delta H for crystalline Co-P powders. According to the investigations performed, this is caused by thermodynamically stimulated segregation of nonmagnetic Co2P inclusions, apparently an effective relaxation channel, in the amorphous state of Co-P powders. (C) 1999 American Institute of Physics. [S1063-7834(99)01903-6].

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Публикация на русском языке Исхаков, Рауф Садыкович. Ширина линии ферромагнитного резонанса в высокодисперсных порошках сплавов Co--P, полученных в кристаллическом и аморфном состояниях [Текст] / Р. С. Исхаков, Л. А. Чеканова, Е. А. Денисова // Физ. тверд. тела. - Санкт-Петербург, 1999. - Т. 41 Вып. 3. - С. 464-467

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Denisova, E. A.; Денисова, Елена Александровна; Исхаков, Рауф Садыкович
}
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16.

Cobalt ferrite nanoparticles in a mesoporous silicon dioxide matrix / S. V. Komogortsev [et al.] // Tech. Phys. Lett. - 2009. - Vol. 35, Is. 10. - P. 882-884, DOI 10.1134/S1063785009100022. - Cited References: 10. - This study was supported in part by the Federal Program "Development of the Scientific Potential of Higher Education" (project no. RNP. 2.1.1/2584) and jointly by the Krasnoyarsk Regional Science Foundation and the Russian Foundation for Basic Research (project nos. r-Enisei-a 03-07-96803 and 09-02-98002-r_sibir'_a). . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
   NANOSIZED COFE2O4
   ANISOTROPY
   POWDERS
   CURVES
Аннотация: We have studied magnetic nanoparticles of cobalt ferrite obtained by the extraction-pyrolysis method in a mesoporous silicon dioxide (MSM-41) molecular sieve matrix. The X-ray diffraction data show evidence for the formation of CoFe(2)O(4) particles with a coherent scattering domain size of similar to 40 nm. Measurements of the magnetization curves showed that powders consisting of these nanoparticles are magnetically hard materials with a coercive field of H (c)(4.2 K) = 9.0 kOe and H (c)(300 K) = 1.8 kOe and a reduced remanent magnetization of M (r)/M (s)(4.2 K) = 0.83 and M (r)/M (s)(300 K) = 0.49. The shape of the low-temperature (4.2 K) magnetization curves is adequately described in terms of the Stoner-Wohlfarth model for randomly oriented single-domain particles with a cubic magnetic anisotropy.

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Держатели документа:
[Komogortsev, S. V.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
Siberian State Technol Univ, Krasnoyarsk 660049, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian State Technological University, Krasnoyarsk 660049, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Balaev, D. A.; Балаев, Дмитрий Александрович; Denisova, E. A.; Денисова, Елена Александровна; Ponomarenko, I. V.; Development of the Scientific Potential of Higher Education [RNP. 2.1.1/2584]; Krasnoyarsk Regional Science Foundation; Russian Foundation for Basic Research [r-Enisei-a 03-07-96803, 09-02-98002-r_sibir'_a]
}
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17.

Nanodispersed powders of Fe-Ni particles with carbon shell / G. N. Churilov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O9.4. - P. 382. - References: 1. - The work was supported by Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement № 14.613.21.0010, ID RFMEFI61314X0010) . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
nanoparticles -- carbon -- iron -- nickel

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Nikolaev, N. S.; Николаев, Никита Сергеевич; Vnukova, N. G.; Внукова, Наталья Григорьевна; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Dubinina, I. A.; Дубинина, Ирина Александровна; Tomashevich, Y. A.; Томашевич, Е. А.; Nemtsev, I. V.; Немцев, Иван Васильевич; Sedov, V. O.; Седов В. О.; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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18.

Ferromagnetic resonance linewidth in the powders of coreshell particles / L. A. Chekanova [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P9.15. - P. 401. - References: 1. - This work was supported by the Russian Foundation for Basic Research, Grants No. 16-03-00256, 16-03-00969, 15-08-06673 and RFBR-KRFS 15-42-0417 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
ferromagnetic resonance -- core-shell particles

Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Denisova, E. A.; Денисова, Елена Александровна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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19.

Cobalt-based bulk nanostructured materials prepared via the dynamic compacting of core–shell composite particles / E. A. Denisova [et al.] // Bull. Russ. Acad. Sci. Phys. - 2016. - Vol. 80, Is. 11. - P. 1377-1380, DOI 10.3103/S1062873816110198. - Cited References: 12. - This work was supported by the Russian Foundation for Basic Research, project nos. 15-08-06673, 16-03-00969, and RFBR and KRFS 15-42-04171. . - ISSN 1062-8738
Кл.слова (ненормированные):
Composite materials -- Bulk nanostructured materials -- Chemical deposition -- Cobalt-based -- Composite particles -- Dynamic compaction -- Magnetic characteristic -- Nano-structured -- Structural and magnetic characteristics -- Powders
Аннотация: Bulk nanostructured Co–P/Cu and Al2O3/Co–P composites are fabricated via dynamic compaction. The initial core–shell particles are synthesized by means of chemical deposition. Structural and magnetic characteristics of the composites are investigated. It is shown that the use of composite particles allows homogeneous compacts with the structure and magnetic characteristics of initial powders to be obtained. © 2016, Allerton Press, Inc.

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Публикация на русском языке Объемные наноструктурированные материалы на основе кобальта, полученные динамическим компактированием композиционных частиц “ядро–оболочка” [Текст] / Е. А. Денисова [и др.] // Изв. РАН. Сер. физич. - 2016. - Т. 80 № 11. - С. 1555-1558

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Krasnoyarsk Institute of Railway Engineering, Krasnoyarsk, Russian Federation
ZAO Pulsed Technologies, Krasnoyarsk, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Kuzovnikova, L. A.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikov, A. A.; Nemtsev, I. V.; Mal'tsev, V. K.; Мальцев, Вадим Константинович
}
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20.

    Nanodispersed Mg-based powders received in a hydrogen-argon plasma flow and estimation of their application prospects as hydrogen storage materials / E. I. Melnikova [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2017. - Vol. 10, Is. 1. - P. 75-82 ; Журн. СФУ. Сер. "Математика и физика", DOI 10.17516/1997-1397-2017-10-1-75-82. - Cited References: 14. - The work was supported by Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement no. 14.613.21.0010, ID RFMEFI61314X0010). . - ISSN 1997-1397
   Перевод заглавия: Нанодисперсные порошки Mg, Mg-Ni, Mg-Pd, полученные в потоке водородоаргоновой плазмы и их характеристики
Кл.слова (ненормированные):
Magnesium powder -- Plasma-chemical synthesis -- Hydrogen storage -- порошок магния -- плазмохимический синтез -- хранение водорода
Аннотация: Nanodispersed powders, consisting of Mg, Mg and Ni, Mg and Pd, were synthesized in a water-cooled chamber in a hydrogen-helium mixture at atmospheric pressure. Plasma generation was carried out in HF arc discharge in an argon flow with one hollow electrode and the other — crucible with molten metal. The resulting powders were investigated by scanning electron microscopy, X-ray fluorescence analysis and X-ray analysis. When adding nickel during the synthesis, magnesium particles with nickel coating were obtained. Synthesis with palladium resulted in producing magnesium particles with dispersed fine palladium inclusions. However, since the saturated steam pressure of palladium is 2–3 orders lower than that of nickel, then obtaining particles coated with palladium is only possible at higher palladium melt temperatures that we could achieve in this laboratory setup variant. As a possible application of the synthesized powders the possibility of their hydrogen storage usage was experimentally evaluated. © Siberian Federal University. All rights reserved.
Нанодисперсные порошки, состоящие из Mg, Mg и Ni, Mg и Pd, были синтезированы в охлаждаемой водой камере, в гелии, смешанном с водородом при атмосферном давлении. Генерация плазмы осуществлялась в ВЧ-дуговом разряде в потоке аргона с одним полым электродом и другим — тиглем с расплавленным металлом. Полученные порошки исследовались методами растровой электронной микроскопии, рентгенофлуоресцентного анализа и рентгенофазового анализа. При одновременном распылении магния и никеля образовывались порошки, состоящие из частиц магния, покрытых никелевой оболочкой. При одновременном распылении магния и палладия порошки состояли из смеси частиц магния и частиц палладия. Однако так как давление насыщенных паров палладия на 2–3 порядка ниже, чем давление насыщенных паров никеля, то получение частиц, покрытых оболочкой палладия, возможно только при более высоких температурах расплава палладия, чем мы могли достигнуть в данном варианте нашей лабораторной установки. В качестве возможного применения синтезированных порошков экспериментально была оценена возможность их использования в виде аккумуляторов водорода.

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Держатели документа:
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics SB RAS, Akademgorodok, 50/38, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology, Akademgorodok 50/24, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Melnikova, E. I.; Kolonenko, A. L.; Колоненко, Андрей Леонидович; Glushenko, G. A.; Глущенко, Гарий Анатольевич; Vnukova, N. G.; Внукова, Наталья Григорьевна; Churilov, G. N.; Чурилов, Григорий Николаевич; Zhizhaev, A. M.

}
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