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1.
Ab initio calculation
of the parameters and band structure of the multiband p-d model for La2CuO4 / Z. V. Pchelkina [et al.]> // The Physics of
Metals
and Metallography. - 2006. -
Т. 101
,
№1 suppl.
- P.,
DOI
10.1134/S0031918X06130059. - Библиогр.: 9. - Joint Integration Pro gram of the Siberian and Ural Divisions of the Russian Academy of Sciences (no. 22); the RFBR–GFEN (grant no. 03-02-39024); the Russian Foundation for Basic Research (grant nos. 04-02-16096 and 03-02-16124); the Siberian Division of the Russian Academy of Sciences, Strongly Correlated Electron Systems Pro gram; and INTAS (grant no. 01-0654). . - ISSN 0031-918X. - ISSN 1531-8672
Аннотация:
In this paper, we proposed ab initio calculation of hopping parameters for La2CuO4. The Wannier function projection procedure of obtaining a small Hamiltonian in real space for different sets of bands of inter est was used. The importance of taking into account Cu and apical Oa pz orbitals is shown. The param eters obtained are used to calculate the band structure of undoped La2CuO4 in the framework of the multiband p–d model in the regime of strong electron correlations.
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Держатели документа:
Center for Electronic Correlations and Magnetism,University of Augsburg
Institute of Metal Physics,Ural Division,Russian Academy of Sciences
Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences
Доп.точки доступа:
Pchelkina, Z. V.; Kondakov, D. E.; Anisimov, V. I.; Leonov, I. V.; Gavrichkov, V. A. ; Гавричков Владимир Александрович; Ovchinnikov, S. G. ; Овчинников Сергей Геннадьевич
}
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2.
About iron globules
formed at cooling of iron-contained plasma / N. V. Bulina [et al.]> // Phys.
Metals
Metallogr. - 2006. -
Vol. 102
. - S94-S95,
DOI
10.1134/S0031918X06140249. - Cited Reference Count: 4 . - ISSN 0031-918X
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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Доп.точки доступа:
Bulina, N. V.; Булина, Наталья Васильевна; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Marachevsky, A.V.; Chekanova, L. A.; Чеканова, Лидия Александровна; Prokof'ev, D. E.; Churilov, G. N.; Чурилов, Григорий Николаевич; Gromyko, A. I.
}
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3.
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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4.
An effective method
of magnetic hyperthermia based on the ferromagnetic resonance phenomenon / S. V. Stolyar, O. A. Li, E. D. Nikolaeva [et al.]> // Phys. Met. Metallogr. - 2023. -
Vol. 124
,
Is. 2
. - P. 174-180,
DOI
10.1134/S0031918X22601834. - Cited References: 15. - This study was supported by grant no. 22-14-20020 from the Russian Science Foundation and the Krasnoyarsk Regional Fund for Support of Scientific and Technological Activities. The authors are grateful to the Krasnoyarsk Regional Center for Collective Use at Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, for providing their research facilities . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
ferromagnetic resonance
--
cobalt ferrite
--
nickel ferrite
--
magnetic hyperthermia
Аннотация:
Nickel and cobalt ferrite nanoparticles have been synthesized using the chemical precipitation method; the nanoparticle sizes were found to be 63 ± 22 and 26 ± 4 nm, respectively. The static hysteresis loops and Mossbauer spectra have been measured. It is shown that cobalt ferrite powders are magnetically harder than nickel ferrite powders. Ferromagnetic resonance (FMR) curves have been studied. It is found that the FMR absorption for cobalt ferrite is observed at room temperature and above. The time dependences of the nanoparticle warm-up under FMR conditions have been measured. The maximum temperature changes for nickel ferrite and cobalt ferrite particles are 8 and 11 K, respectively. Using the example of cobalt ferrite powder, the possibility of effectively heating of particles in the FMR mode in their own field without using a DC magnetic field source is shown. The observed effect can be used in magnetic hyperthermia.
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Публикация на русском языке
Эффективный способ магнитной гипертермии, основанный на явлении ферромагнитного резонанса [Текст] / С. В. Столяр, О. А. Ли, Е. Д. Николаева [и др.] // Физ. металлов и металловед. - 2023. - Т. 124 № 2. - С. 182-189
Держатели документа:
Federal Research Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Stolyar, S. V.; Li, O. A.; Nikolaeva, E. D.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; P’yankov, V. F.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
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5.
An update on
inert anodes for aluminium electrolysis / A. S. Yasinskiy, S. K. Padamata, P. V. Polyakov, A. V. Shabanov> // Non-Ferrous Met. - 2020. -
Vol. 48
,
Is. 1
. - P. 15-23,
DOI
10.17580/nfm.2020.01.03. - Cited References: 62. - The work is performed as a part of the state assignment for the science of Siberian Federal University, project number FSRZ-2020-0013. Use of equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” is acknowledged . - ISSN 2072-0807
Кл.слова (ненормированные):
Inert anodes
--
aluminium electrolysis
--
CO2 emission
--
metallic anode
--
cermet anode
--
ceramic anode
--
oxygenevolving electrode
--
fluoride melt
--
corrosion
--
oxidation
--
low-temperature electrolyte
--
Hall-Heroult cell
Аннотация:
This update includes the literature related to the inert anodes which were published in the past decade. The metallic anodes are widely regarded as promising candidates to replace the carbon anodes due to its attractive properties like good electrical conductivity, easy to manufacture and high resistance to high thermal shocks. The
metals
have been tested in pure state and alloy (binary, ternary) form. The oxide scale formed on the anode surface acts as a barrier between the electrolyte and the anode, which protects the anode from being dissolved. The layer of molten fluorides is formed between the scale and the metal anode after a certain time of polarization, and the oxide scale acts as a bipolar electrode. Metal like Cu is reduced at the internal side of the scale. This paper elaborates the effects of various parameters on the performance of the anode. Cu-based alloys (Cu – Ni – Fe and Cu – Al) have shown promising results and could perform well in low-temperature electrolytes. It has been well established that the Cu content in Cu – Ni – Fe and Cu – Al alloys plays a major role in the metal dissolution as the CuO/Cu2O scales formed on the outer layer act as a sacrificial one. The corrosion rate of an anode can be reduced by decreasing the operating temperature, which is possible by using the KF – AlF3 melts. The use of suspensions can increase the purity of the produced metal by stop-ping the anode products to come in contact with cathode metal. Many industries including RUSAL and ELYSIS are still conducting a considerable amount of research to develop an inert anode and are expecting to have a carbon-free cell in the nearest future.
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Держатели документа:
Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Molecular Spectroscopy, Krasnoyarsk Science Center SB RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Yasinskiy, A. S.; Padamata, S. K.; Polyakov, P. V.; Shabanov, A. V.; Шабанов, Александр Васильевич
}
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6.
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. 122-128
DOI
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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7.
Auger electron spectroscopy
of thin Cr2GeC films / T. A. Andryushchenko, S. A. Lyaschenko, S. N. Varnakov [et al.]> // Phys. Met. Metallogr. - 2023. -
Vol. 124
,
Is. 14
. - P. 1776-1782,
DOI
10.1134/S0031918X2360135X. - Cited References: 33. - The research was supported by the Russian Science Foundation (grant no. 21-12-00226, http://rscf.ru/project/21-12-00226/) . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
МАХ phases
--
chromium germanides
--
epitaxial thin films
--
Auger electron spectroscopy
--
magnetron sputtering co-deposition
Аннотация:
Auger electron spectroscopy was used to determine the phase composition of Cr2GeC MAX phase thin films. A distinctive feature of the formation of carbon-containing MAX phases is the shape of carbon Auger peaks, which is characteristic of metal carbides spectra. Features of the Auger spectra in the presence of secondary phases of chromium germanides are found. Their presence can manifest itself in an increase in the energy of the germanium peaks, which is caused by a chemical shift during the formation of the Cr–Ge bond. Moreover, we have detected the accumulation of electronic charge, which can be explained by the features of the surface morphology.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Andryushchenko, T. A.; Андрющенко, Татьяна Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Nemtsev, I. V.; Немцев, Иван Васильевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Shevtsov, D. V.; Шевцов, Дмитрий Валентинович; Maximova, O. A.; Максимова, Ольга Александровна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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8.
Belyaev, B. A.
Electrodynamic calculation of effective electromagnetic parameters of a dielectric medium with metallic nanoparticles of a given size / B. A. Belyaev, V. V. Tyurnev> // J. Exp. Theor. Phys. - 2018. -
Vol. 127
,
Is. 4
. - P. 608-619,
DOI
10.1134/S1063776118100114. - Cited References: 31. - This work was supported by the Ministry of Education and Science of the Russian Federation (contract no. 14.575.21.0142; unique identifier of the project is RFMEFI57517X0142). . - ISSN 1063-7761
Кл.слова (ненормированные):
Electromagnetic fields
--
Magnetic susceptibility
--
Metals
--
Nanoparticles
--
Natural frequencies
--
Permittivity
Аннотация:
The frequency dependence of the effective complex permittivity and effective complex permeability of a heterostructure based on a dielectric medium containing metallic nanoparticles of spherical shape is calculated by an original method. In contrast to the Bruggeman [21] and the Maxwell Garnett [17] approaches, which use the quasi-static approximation in calculations, a nonuniform distribution of electromagnetic fields inside metallic particles is calculated, which allows the analysis of the electromagnetic parameters of the heterostructure not only as a function of frequency but also as a function of the nanoparticle size. It is shown that the plasmon resonant frequency decreases with increasing both the size and the concentration of particles in the heterostructure. It is also shown that a dielectric medium containing nonmagnetic metallic nanoparticles exhibits diamagnetic properties. In this case, the position of the maximum on the frequency dependence of the imaginary part of the magnetic susceptibility coincides with the relaxation frequency of charge carriers. The calculated spectra of the real and imaginary components of the permittivity of the heterostructure with a size of metallic particles less than 10 nm are in good agreement with Bruggeman calculations; however, the agreement with Maxwell Garnett calculations is observed only at nanoparticle concentrations lower than 10–6.
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Публикация на русском языке
Беляев, Борис Афанасьевич. Электродинамический расчет эффективных электромагнитных параметров диэлектрической среды с металлическими наночастицами заданных размеров [Текст] / Б. А. Беляев, В. В. Тюрнев // Журн. эксперим. и теор. физ. - 2018. - Т. 154 Вып. 4. - С. 716-729
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch,Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Беляев, Борис Афанасьевич
}
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9.
Calculation of the
energy of binding of titanium and scandium complexes to the surface of carbon nanotubes / A. A. Kuzubov [et al.]> // Russ. J. Phys. Chem. B. - 2009. -
Vol. 3
,
Is. 4
. - P. 679-683,
DOI
10.1134/S1990793109040289. - Cited References: 27. - This work was supported by the analytical departmental program "Development of Higher Education Potential (2009-2100)" (grant 2.1.1/2584) and by the Russian Foundation for Basic Research, project no. 09-02-00324-a. . - ISSN 1990-7931
РУБ
Physics, Atomic, Molecular & Chemical
Рубрики:
MOLECULAR-HYDROGEN COMPLEXES
STORAGE
TEMPERATURE
TRANSITION
DYNAMICS
METALS
Аннотация:
Complexes of zigzag-type carbon nanotubes (CNTs) with transition metal atoms, scandium and titanium, were studied. It was demonstrated that the energy of binding of both atoms with a carbon surface decreases whereas the rate of diffusion along the surface increases with increasing nanotube diameter. The rate constant of migration of scandium atoms over a CNT surface are several orders of magnitude higher than that for titanium atoms, because the CNT surface-Sc atom binding energy is substantially lower.
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Держатели документа:
Institute of Natural and Humanitarian Sciences, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian State Technological University, Krasnoyarsk 660049, Russian Federation
Доп.точки доступа:
Kuzubov, A. A.; Кузубов, Александр Александрович; Krasnov, P. O.; Краснов, Павел Олегович; Kozhevnikov, T. A.; Popov, M. A.; Analytical departmental program "Development of Higher Education Potential" [2.1.1/2584]; Russian Foundation for Basic Research [09-02-00324-a]
}
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10.
Chemical bonding effect
in complex oxyfluorides with transition
metals
/ V. V. Atuchin [et al.]> // 3 Int. Conf. on the Advancement of Mater. and Nanotechn. (ICAMN 2013) : Programme and abstracts book. - 2013. - P. 68
Перевод заглавия:
Эффект химического связывания в оксифторидах с переходными металлами
Кл.слова (ненормированные):
XPS
--
oxyfluoride
--
transition
metals
--
crystal structure
--
bonding
Доп.точки доступа:
Atuchin, V. V.; Isaenko, L. I.; Kesler, V. G.; Laptash, N. M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; International Conference on the Advancement of Materials and Nanotechnology (3 ; 2013 ; Nov. ; 19-22 ; Penang, Malaysia)
}
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11.
Chemical bonding effect
in complex oxyfluorides with transition
metals
/ V. V. Atuchin [et al.]> //
The 7th Russian-French workshop on Nanosciences and Nanotechnologies : Program and abstract book / ed. A. V. Okotrub. - 2013. - P. 29 . - ISBN 978-5-901688-29-8
Перевод заглавия:
Особенности химических связей в сложных оксифлюоридах, содержащих переходные металлы
Материалы конференции
Доп.точки доступа:
Okotrub, A.V. \ed.\; Atuchin, V. V.; Isaenko, L. I.; Kesler, V. G.; Laptash, N. M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Russian-French workshop on Nanosciences and Nanotechnologies(7 ; 2013 ; Jun. ; 3-6 ; Новосибирск); Российская академия наук; Сибирское отделение РАН; Институт неорганической химии им. А.В. Николаева Сибирского отделения РАН; Институт катализа им. Г.К. Борескова Сибирского отделения РАН; Институт физики полупроводников им. А.В. Ржанова Сибирского отделения РАН
}
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12.
Chemistry of vinylidene
complexes. XX. Intramolecular carbonylation of vinylidene on the MnFe center: Spectroscopic and structural study. X-ray structure of the new trimethylenemethane type MnFe complex / A. B. Antonova [et al.]> // J. Organomet. Chem. - 2011. -
Vol. 696
,
Is. 4
. - P. 963-970,
DOI
10.1016/j.jorganchem.2010.10.035. - Cited References: 52. - This work was partially supported by the Presidium of the Russian Academy of Sciences (Program for Basic Research, Project No. 7.18) and Russian Foundation for Basic Research (Grant No. 09-03-90745-mob_st). Authors are grateful to Prof. N.A. Ustynyuk for useful discussions, Dr. E.A. Shor and Dr. A.M. Shor for giving the data of quantum chemical study. . - ISSN 0022-328X
РУБ
Chemistry, Inorganic & Nuclear + Chemistry, Organic
Рубрики:
MOLECULAR-STRUCTURE
ORGANOMETALLIC CHEMISTRY
TRICARBONYL COMPLEXES
UNSATURATED CARBENES
METAL VINYLIDENES
TRANSITION-
METALS
ORGANIC-SYNTHESIS
CRYSTAL-STRUCTURE
IRON TRICARBONYL
MANGANESE
Кл.слова (ненормированные):
Manganese
--
Iron
--
Carbonyl complexes
--
Heteronuclear vinylidene complexes
--
Intramolecular vinylidene carbonylation
--
Trimethylenemethane complexes
Аннотация:
Reactions of Fe-2(CO)(9) with Cp(CO)(2)Mn=C=CHPh (1) and Cp(CO)(PPh3)Mn=C=CHPh (3) gave the heterometallic trimethylenemethane complexes eta(4)-{C[Mn(CO)(2)Cp](CO)CHPh}Fe(CO)(3) (2) and eta(4)-{C[Mn(CO)(PPh3)Cp](CO)CHPh}Fe(CO)(3) (4), respectively. The formation of the benzylideneketene [PhHC=C=C=O] fragment included in complexes 2 and 4 occurs via intramolecular coupling of the carbonyl and vinylidene ligands. The structures of 3 and 4 were determined by single crystal XRD methods. The influence of the nature of the L ligands at the Mn atom on the structural and spectroscopic characteristics of eta(4)-{C[Mn(CO)(L)Cp](CO)CHPh}Fe(CO)(3) (L = CO (2), PPh3 (4)) is considered. According to the VT H-1 and C-13 NMR spectra, complex 2 reversibly transforms in solution into mu-eta(1):eta(1)-vinylidene isomer Cp(CO)(2)MnFe(mu-C=CHPh)(CO)(4) (2a), whereas complex 4 containing the PPh3 ligand is not able to a similar transformation. (C) 2010 Elsevier B.V. All rights reserved.
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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660049, Russia
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia
Доп.точки доступа:
Antonova, A. B.; Chudin, O. S.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Rubaylo, A. I.; Verpekin, V. V.; Sokolenko, W. A.; Pavlenko, N. I.; Semeikin, O. V.
}
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13.
Chemistry of vinylidene
complexes [Text] / A. B. Antonova [et al.]> // Russ. Chem. Bull. - 2009. -
Vol. 58
,
Is. 5
. - P955-963,
DOI
10.1007/s11172-009-0122-3. - Cited Reference Count: 35. - Гранты: This work was financially supported by the Krasnoyarsk Regional Science Foundation (Grants Nos. 10TS145 and 17G002), the Council on Grants at the President of the Russian Federation (Program for State Support of Leading Scientific Schools, Grant NSh-4137.2006.2), and the Presidium of the Russian Academy of Sciences (Program for Basic Research, Project No. 18.18). - Финансирующая организация: Krasnoyarsk Regional Science Foundation [10TS145, 17G002]; Council on Grants at the President of the Russian Federation [NSh-4137.2006.2]; Presidium of the Russian Academy of Sciences [18.18] . - MAY. - ISSN 1066-5285
Рубрики:
RAY CRYSTAL-STRUCTURE
MOLECULAR-STRUCTURE
PHENYLVINYLIDENE LIGANDS
BRIDGED COMPLEXES
TRANSITION-
METALS
CARBONYL LIGAND
BINUCLEAR
DERIVATIVES
DINUCLEAR
RHENIUM
Кл.слова (ненормированные):
vinylidene complexes
--
heterometallic complexes
--
manganese
--
rhenium
--
palladium
--
platinum
--
IR and NMR spectroscopy
--
X-ray diffraction study
--
Heterometallic complexes
--
IR and NMR spectroscopy
--
Manganese
--
Palladium
--
Platinum
--
Rhenium
--
Vinylidene complexes
--
X-ray diffraction study
Аннотация:
The reactions of Cp(CO)(2)Re=C=CHPh (2) with M(PPh(3))(4) (M = Pd, Pt) gave the mu-vinylidene complexes Cp(CO)(2)RePd(mu-C=CHPh)(PPh(3))(2) (3) and Cp(CO)(2)RePt(mu-C=CHPh)(PPh(3))(2) (1), respectively. The substitution of Ph(2)PCH(2)PPh(2) (dppm) for the PPh(3) ligands in 1 resulted in the formation of Cp(CO)RePt(mu-C(1)=C(2)HPh)(mu-CO)(dppm) (4). The structure of complex 4 has been determined by single-crystal X-ray diffraction analysis. The structural and spectroscopic characteristics of complexes 1, 3, and 4 were compared with the corresponding parameters of the manganese-containing analogs Cp(CO)(2)MnPd(mu-C=CHPh)(PPh(3))(2) (5), Cp(CO)(2)MnPt(mu-C=CHPh)(PPh(3))(2) (6) and Cp(CO)(2)MnPt(mu-C=CHPh)(dppm) (7).
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,
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eLibrary
Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660049, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia
Доп.точки доступа:
Antonova, A.B.; Chudin, O.S.; Pavlenko, N.I.; Sokolenko, W.A.; Rubaylo, A.I.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Verpekin, V.V.; Semeikin, O.V.
}
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14.
Chzhan, A. V.
Interlayer interaction and coercivity of three-layer films obtained bу chemical deposition / A. V. Chzhan, V. A. Orlov, M. N. Volochaev> // Phys. Met. Metallogr. - 2023. -
Vol. 124
,
Is. 10
. - P. 961-965,
DOI
10.1134/S0031918X23601804. - Cited References: 21. - We are grateful to S.Ya. Kiparisov for the provided samples . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
multilayer magnetic films
--
interlayer interaction
--
dipole coupling field
--
coercivity
Аннотация:
The results of experimental and theoretical studies of the coercivity and the dipole coupling field of the hysteresis loop on the thickness of the nonmagnetic interlayer in magnetic films, which are obtained via chemical deposition, are presented. Using model calculations based on the Landau–Ginzburg equations, the exchange interactions between magnetic layers with the participation of atoms from the nonmagnetic interlayer are studied. The resulting expression for the dipole coupling field describes well the exponential changes in the dipole coupling field as a function of the interlayer thickness in structures with both soft magnetic layers and layers with significantly different values of the coercivity.
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Чжан А. В. Межслоевое взаимодействие и коэрцитивная сила трехслойных пленок, полученных химическим осаждением [Текст] / А. В. Чжан, В. А. Орлов, М. Н. Волочаев. - 5 с. // Физ. металлов и металловед. - 2023. - Т. 124 № 10. - С. 904-908
Держатели документа:
Siberian Federal University, 660041, Krasnoyarsk, Russia
Krasnoyarsk State Agrarian University, 660049, Krasnoyarsk, Russia
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Orlov, V. A.; Орлов, Виталий Александрович; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
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15.
Co/Pt multilayer structures
on he crystal MgO and Si substrate as a media for perpendicular magnetic recording [Text] / P. D. Kim, I. A. Turpanov, S. V. Stolyar [et al.]> // The Physics of
Metals
and Metallography. - 2006. -
Vol. 102
,
Suppl. 1
. - P. S83-S85
DOI
10.1134/S0031918X06140213. - Библиогр.: 6
Аннотация:
In this work, the crystal structure and hysteretic magnetic properties of equiatomic single-crystal CoPt/MgO films prepared by magnetron sputtering and their modifications after heat treatment are studied. A perpendicular magnetic anisotropy is obtained in annealed films in a film thickness range of 2 d≤16 nm. The correlation between the magnitude of magnetocrystalline anisotropy constant of CoPt films and the order parameter of the L10 superstructure of these alloys is ascertained. The influence of the single-crystal MgO substrate on the structure and magnetic properties of the films of equiatomic CoPt alloys is also investigated.
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Держатели документа:
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia
Krasnoyarsk State University, Krasnoyarsk, 660041 Russia
Доп.точки доступа:
Kim, P. D.; Ким, Петр Дементьевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Yushkov, V. I.; Юшков, Василий Иванович; Khalyapin, D. L.
Свободных экз. нет
}
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16.
Distribution of cobalt
Co2+ ions in single crystals of spinel Li0.5Ga2.5O4 / V. V. Shapovalov, V. A. Shapovalov, T. V. Drokina [et al.]> // Phys. Met. Metallogr. - 2024. -
Vol. 125
,
Is. 1
. - P. 27-32,
DOI
10.1134/S0031918X23602883. - Cited References: 22 . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
electron paramagnetic resonance
--
spinel single crystal
--
unit cell
--
crystal lattice
--
structurally nonequivalent positions of ions
Аннотация:
The distribution of Co2+ ions over sublattices and structurally nonequivalent positions in the unit cell of the crystal lattice of a single crystal of lithium gallium spinel Li0.5Ga2.5O4 is shown. This distribution determines the properties of both mono- and nanocrystalline substances. The distribution is obtained by a special technology and is manifested in the electron paramagnetic resonance (EPR) spectra. The distribution of Co2+ ions depends on the structural and magnetic nonequivalence. The structural and magnetic nonequivalence causes a multiminimum behavior of the crystal field potential in the unit cells of single crystals at the locations of Co2+ ions. The Co2+ ions are found in complexes with tetrahedral and octahedral oxygen ions. Three types of EPR spectra of Co2+ ions have been found and investigated. The Cotetr2+ spectrum is attributed to the Co2+ ion, which replaces the Ga3+ ion located in a tetrahedral oxygen environment. The spectrum of the Cooct2+ ion located in the crystal field with axial symmetry belongs to the Co2+ ion replacing the Li+ ion located in an octahedral oxygen environment. The spectrum of the Cooct2+ ion located in a low symmetry crystal field belongs to the Co2+ ion replacing the Ga3+ ion located in an octahedral oxygen environment. The nearest cationic environment of the ion creates rhombic distortions due to the different valence numbers of Li+ and Ga3+. The results of studying the angular dependences of the spectra show the presence of four and twelve magnetically nonequivalent positions in the unit cells.
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Публикация на русском языке
Распределение ионов кобальта Cо2+ в монокристаллах шпинели Li0.5Ga2.5O4 [Текст] / В. В Шаповалов, В. А. Шаповалов, Т. В. Дрокина [и др.]. - 7 с. // Физ. металлов и металловед. - 2024. - Т. 125 № 1. - С. 32-38
Держатели документа:
Math for America (MfA), New York, USA
Galkin Donetsk Institute of Physics and Engineering, 283048, Donetsk, Russia
Kirenskii Institute of Physics, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Shapovalov, V. V.; Shapovalov, V. A.; Drokina, T. V.; Дрокина, Тамара Васильевна; Vorotynov, A. M.; Воротынов, Александр Михайлович; Val'kov, V. I.; Вальков, В. И.
}
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17.
Drokina, T. V.
Spin glasses state in zirconolites LnFeTi207 (Ln = Sm, Gd, Dy) [Текст] / T. V. Drokina, G. A. Petrakovskii> // Adv.
metals
, ceramics and composites : 12th China-Russia Symposium on Advaced Materials and Technologies. - 2013. -
Pt. 1
. - P. 143-146 . - ISBN 978-7-5415-7650-5
Перевод заглавия:
Передовые металлы, керамические и композиционные материалы
Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Дрокина, Тамара Васильевна; China-Russia Symposium on Advaced Materials and Technologies (12 ; 2013 ; Nov. 18-22 ; Kunming, China)
}
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18.
Effect of electron
correlations on the Fe3Si and α- FeSi2 band structure and optical properties / I. Sandalov [et al.]> // Phys. Rev. B. - 2015. -
Vol. 92
,
Is. 20
. - Ст. 205129,
DOI
10.1103/PhysRevB.92.205129. - Cited References:69. - The theoretical part of this work was supported by Russian Fund of Basic Research, Grant No. 14002-00186 and the President of Russia Grants No. 2886.2014.2 and No. 924.2014.2 for support of Leading Scientific School. The calculations were performed with the computer resources of NRC "Kurchatov Institute" (ui2.computing.kiae.ru). The experimental work was supported by Russian Fund of Basic Research, Grant No. 13-02-01265. I.S. thanks A. Ruban for useful discussion. . - ISSN 1098-0121. - ISSN 1550-235X
Перевод заглавия:
Влияние электронных корреляций на зонную структуру и оптические свойства Fe3Si и alpha-FeSi2
РУБ
Physics, Condensed Matter
Рубрики:
DENSITY-FUNCTIONAL THEORY
TOTAL-ENERGY CALCULATIONS
AUGMENTED-WAVE METHOD
BASIS-SET
METALS
ABSORPTION
EMISSION
SURFACES
ALLOYS
LAYERS
Аннотация:
We use the Vienna ab initio simulation package (vasp) for evaluation of the quasiparticle spectra and their spectral weights within Hedin's GW approximation (GWA) for Fe3Si and α-FeSi2 within the non-self-consistent one-shot approximation G0W0 and self-consistent scGWA with the vertex corrections in the particle-hole channel, taken in the form of two-point kernel. As input for G0W0, the band structure and wave functions evaluated within the generalized gradient corrected local-density approximation to density functional theory (GGA) have been used. The spectral weights of quasiparticles in these compounds deviate from unity everywhere and show nonmonotonic behavior in those parts of bands where the delocalized states contribute to their formation. The G0W0 and scGWA spectral weights are the same within 2%–5%. The scGWA shows a general tendency to return G0W0 bands to their GGA positions for the delocalized states, while in the flat bands it flattens even more. Variable angle spectroscopic ellipsometry measurements at T=296 K on grown single-crystalline ∼50-nm-thick films of Fe3Si on n-Si(111) wafer have been performed in the interval of energies ω∼(1.3–5) eV. The comparison of G0W0 and scGW theory with experimental real and imaginary parts of permittivity, refractive index, extinction and absorption coefficients, reflectivity, and electron energy loss function shows that both G0W0 and scGW qualitatively describe experiment correctly, the position of the low-energy peaks is described better by the scGW theory, however, its detailed structure is not observed in the experimental curves. We suggest that the angle-resolved photoemission spectroscopy experiments, which can reveal the fine details of the quasiparticle band structure and spectral weights, could help to understand (i) if the scGWA with this type of vertex correction is sufficiently good for description of these iron silicides and, possibly, (ii) why some features of calculated permittivity are not seen in optical experiments.
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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Siberian Aerosp Univ, Inst Space Investigat & High Technol, Krasnoyarsk 660037, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Sandalov, I. S.; Сандалов, Игорь Семёнович; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Tarasov, I. A.; Тарасов, Иван Анатольевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Solovyov, L. A.; Соловьев, Леонид Александрович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Fund of Basic Research [14002-00186, 13-02-01265]; President of Russia Grants [2886.2014.2, 924.2014.2]
}
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19.
Effect of mechanical
stress on structure of magnetization of three-layer nanosized disks / V. A. Orlov, V. S. Prokopenko, R. Y. Rudenko, I. N. Orlova> // Phys. Met. Metallogr. - 2020. -
Vol. 121
,
Is. 11
. - P. 1039-1044,
DOI
10.1134/S0031918X20100075. - Cited References: 38. - The research was funded by the Russian Foundation for Basic Research (RFBR), i.e., theoretical and numerical calculations by project No. 18-02-00161 and experimental study by project no. 20-02-00696 . - ISSN 0031-918X
Кл.слова (ненормированные):
nanolancet
--
nanodisk
--
magnetoelastic effect
--
magnetic anisotropy
Аннотация:
The contribution of magnetoelastic effects to the effective magnetic anisotropy of a three-layer film nanodisk (nonmagnetic metal/ferromagnet/nonmagnetic metal) was studied. The mechanical stresses at the lateral surface of the disk that are caused by two factors, i.e., unequal thermal expansion of layers and excess surface energy at the layers interfaces, were estimated. The case in which the contribution of magnetoelastic effects to the anisotropy is comparable with those of shape and crystalline anisotropies was discussed. It was shown that the main reason for the change in the local anisotropy field in the vicinity of a nanodisk edge was the mechanical stresses induced by the excess surface energy. The possible application of film nanodisks of nickel with a bilateral golden coating as “nanolancets” for noninvasive cell surgery of tumors was discussed.
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Публикация на русском языке
Влияние механических напряжений на структуру намагниченности трехслойных наноразмерных дисков [Текст] / В. А. Орлов, В. С. Прокопенко, Р. Ю. Руденко, И. Н. Орлова // Физ. металлов и металловед. - 2020. - Т. 121 № 11. - С. 1135-1141
Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Astafiev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation
Доп.точки доступа:
Orlov, V. A.; Орлов, Виталий Александрович; Prokopenko, V. S.; Rudenko, R. Y.; Orlova, I. N.
}
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20.
Effect of substitution
on magnetic moments of iron and chromium atoms in MAX phases of type (Cr4 – xFex)0.5SiC: Theoretical calculation / F. N. Tomilin, A. A. Shubin, V. V. Kozak [et al.]> // Phys. Met. Metallogr. - 2022. -
Vol. 123
,
Is. 7
. - P. 640-644,
DOI
10.1134/S0031918X22070195. - Cited References: 25. - The study is supported by the Russian Science Foundation (project no. 21-12-00226) and by the Interagency Supercomputer Center of the Russian Academy of Sciences (MVS-100K and MVS-10P) . - ISSN 0031-918X
Кл.слова (ненормированные):
theory of density functional
--
MAX phases
--
substitution effect
Аннотация:
MAX phases are a family of ternary layered compounds with formal stoichiometry M2AX and have a layered hexagonal structure. Calculations with the B3LYP density functional show that, by varying the ratio between the chromium and iron in the MAX phase (Cr4 – xFex)0.5SiC, it is possible to change the lattice parameters and the magnetic moment on metal atoms. In this phase, a partial substitution of one metal for the other can be considered a technique of intended variation of their magnetic properties.
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Публикация на русском языке
Влияние замещения на магнитные моменты атомов железа и хрома в МАХ-фазах вида (Cr4–xFex)0.5SiC. Теоретический расчет [Текст] / Ф. Н. Томилин, А. А. Шубин, В. В. Козак [и др.] // Физ. металлов и металловед. - 2022. - Т. 123 № 7. - С. 682-686
Держатели документа:
Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kyungpook National University, Gyeongbuk Province, Daegu, South Korea
Доп.точки доступа:
Tomilin, F. N.; Томилин, Феликс Николаевич; Shubin, A. A.; Kozak, V. V.; Ivanova, D. A.; Fedorova, N. A.; Ol’shevskaya, Y. S.; Kovaleva, A. V.; Avramov, P. V.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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