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Unit for measuring the magnetic characteristics of thin ferromagnetic films / S. Kleshnina, B. Belyaev, N. Boev [et al.] // Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2020 : proceedings. - 2020. - Ст. 9117609. - P. 326-329, DOI 10.1109/USBEREIT48449.2020.9117609. - Cited References: 7. - This work was supported by the Ministry of Education and Science of 075 11 2019-054
Кл.слова (ненормированные):
thin magnetic films -- measuring unit -- magnetic characteristics -- ferromagnetic resonance
Аннотация: Studying the properties of ferromagnetic films helps in solving the fundamental problems of the physics of magnetic phenomena and in developing the theory of ferromagnetism. Modern software and hardware, along with reliable diagnostic methods are used to research and design thin-film devices. In this regard, the development of devices and methods for measuring the magnetic characteristics of thin ferromagnetic films is an essential task. The aim of the work is to develop an unit for local measurements of the magnetic characteristics of thin ferromagnetic films, which has the ability to change the degree of locality of measurements over a wide range and has high sensitivity at the same time. The article reviews a new unit for measuring the magnetic characteristics of thin ferromagnetic films. The unit allows measuring the value and direction of the anisotropy field on a local area of the film. A block diagram and description of a new unit, as well as methods of measurements are shown in the article. The experimentally obtained distribution of the anisotropy field over the area of the studied sample of Ni 80 Fe 20 film is shown in this work. The experimental results confirm the compliance of the new unit with the declared characteristics. The unit can be used for non-destructive quality control and for measuring uniformity of thin ferromagnetic films magnetic characteristics.

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Держатели документа:
Laboratory of Electrodynamics and Microwave Electronics, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Kleshnina, S. A.; Клешнина, Софья Андреевна; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Izotov, A. V.; Изотов, Андрей Викторович; Burmitskikh, A. V.; Бурмитских, Антон Владимирович; Gorchakovsky, A.; Горчаковский, Александр Антонович; Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology(2020 ; 14-15 May ; Yekaterinburg, Russia); Institute of Electrical and Electronics Engineers
}
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Dielectric and transport properties, electric polarization at the sequential structural phase transitions in iron-substituted bismuth pyrostannate / S. S. Aplesnin, L. V. Udod, M. N. Sitnikov, O. B. Romanova // Ceram. Int. - 2021. - Vol. 47, Is. 2. - P. 1704-1711, DOI 10.1016/j.ceramint.2020.08.287. - Cited References: 33. - The reported study was funded by Russian Foundation for Basic Research project № 20-52-00005 Bel_a . - ISSN 0272-8842
Кл.слова (ненормированные):
Dielectric properties -- Impedance -- Electrical conductivity -- Electric polarization -- Thermopower
Аннотация: The electrical characteristics including the electrical resistance, impedance, I–V characteristics, capacitance, dissipation factor, and thermoelectric power of the Bi2Sn2-хFeхO7 (х = 0.1, 0.2) stannates have been investigated in the temperature range of 100–600 K at frequencies of 102–106 Hz. The paramagnetic contribution of electrons to the dynamic magnetic susceptibility has been established. The conductivity mechanism of the compounds has been found from the I–V characteristics and the change in the carrier sign has been determined from the thermoelectric power. The hysteresis of the I–V curves, charge transfer currents and polarization current have been observed in the Bi2Sn1·8Fe0·2O7 compound. A nonlinear field dependence of the polarization in the orthorhombic phase has been found. The correlation between the obtained characteristics and the phase structure transitions has been established. Two relaxation channels and activation energy have been found using the Debye model. The hysteretic I–V characteristics have been explained using a model of the electronic structure and the dipole and migration polarization.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Romanova, O. B.; Романова, Оксана Борисовна
}
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BT-30 Ceramic Electrophysical Properties / N. A. Drokin, V. S. Kiiko, A. V. Pavlov, A. I. Malkin // Refract. Ind. Ceram. - 2020. - Vol. 61, Is. 3. - P. 341-348, DOI 10.1007/s11148-020-00484-2. - Cited References: 12 . - ISSN 1083-4877. - ISSN 1573-9139
Кл.слова (ненормированные):
(BeO + TiO2)-ceramic -- electrophysical properties -- electrical resistance activation energy
Аннотация: A total complex resistance (impedance) method is used to study the electrophysical characteristics of (BeO + TiO2)-ceramics modified with TiO2 micro- and nanoparticles in an amount of 30 wt.% (BT-30). Dispersion of the actual ε′ and imaginary ε′′ components of the dielectric permittivity component and specific conductivity in the frequency range from 100 Hz to 100 MHz from room temperature to the boiling point of liquid nitrogen are determined. High values of ε′ and ε′′ in the low-frequency range are typical for structurally inhomogeneous materials due to the accumulation of electric charges at the surface and within microcrystals. Two dielectric relaxation processes associated with electrical conductivity within the body and at the surface of ceramics are detected for the first time. An increase in conductivity with an increase in the microwave field frequency above 1 MHz is explained by the appearance of a current relaxation component. The activation energy of the static resistance of ceramic specimens is determined as a function of the reciprocal temperature that depends little on the weight content of TiO2 nanoparticles and varies in the range of 0.024 – 0.10 eV This also confirms the existence of two independent conduction processes, weakly dependent on the nanoparticle content in the ceramic composition. With placement of ceramic in a high-frequency electric field, spatial charges are formed, the field of which contributes to creation of additional polarization and dielectric losses.

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Держатели документа:
FGBOU VO Academician M. F. Reshetnev Siberian Aerospace University, Krasnoyarsk, Russia.
FGBUN Federal Research Center, Krasnoyarsk Scientific Center of the Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia.
FGAOU VO Ural Federal University, Ekaterinburg, Russia.
FGAOU VO Siberian Federal University, Krasnoyarsk, Russia.

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Kiiko, V. S.; Pavlov, A. V.; Malkin, A. I.
}
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Electrical properties of thin In2O3/C films / I. V. Babkina, M. N. Volochaev, O. V. Zhilova [et al.] // Inorg. Mater. - 2020. - Vol. 56, Is. 4. - P. 374-381, DOI 10.1134/S0020168520040019. - Cited References: 26. - This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target, project no. 3.1867, 2017/4.6). . - ISSN 0020-1685. - ISSN 1608-3172

РУБ Materials Science, Multidisciplinary
Рубрики:
SEMICONDUCTORS
GAS
Кл.слова (ненормированные):
amorphous and crystalline structures -- electrical resistance -- heat treatment
Аннотация: We have studied the structure and electrical properties of thin films based on the In2O3 semiconductor and carbon, grown by atomic layer deposition using ion-beam sputtering. The structure of the resultant materials, formed during layer-by-layer growth of island layers, is made up of nanocrystalline In2O3 granules distributed at random over amorphous carbon. The electrical transport properties of the In2O3/C thin films depend on their thickness. In the temperature range 80-300 K, the dominant electrical transport mechanism in the In2O3/C thin films of thickness h <70 nm sequentially changes from variable range hopping between localized states in a narrow energy band near the Fermi level (between 80 and 120 K) to nearest neighbor hopping (between 120 and 250 K) and then to variable range hopping between localized states in the conduction band tail (between 250 and 300 K). The films of thickness h > 70 nm undergo a change from conduction associated with strong carrier localization to that due to the presence of percolation clusters formed by In2O3 nanocrystals, which shows up as a linear temperature dependence of conductivity, with a negative temperature coefficient.

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Публикация на русском языке Электрические свойства тонких пленок In2O3/С [Текст] / И. В. Бабкина, М. Н. Волочаев, О. В. Жилова [и др.] // Неорган. матер. - 2020. - Т. 56 № 4. - С. 393-401

Держатели документа:
Voronezh State Tech Univ, Moskovskii Pr 14, Voronezh 394026, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk Sci Ctr,Fed Res Ctr, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Babkina, I. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zhilova, O. V.; Kalinin, Yu. E.; Makagonov, V. A.; Pankov, S. Yu.; Sitnikov, A. V.; Russian Federation Ministry of Science and Higher Education [3.1867, 2017/4.6]
}
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Effect of multiplicity fluctuation in cobalt ions on crystal structure, magnetic and electrical properties of NdCoO3 and SmCoO3 / V. A. Dudnikov, Y. S. Orlov, L. A. Solovyov [et al.] // Molecules. - 2020. - Vol. 25, Is. 6. - Ст. 1301, DOI 10.3390/molecules25061301. - Cited References: 56. - This work is supported by the Russian Science Foundation grant 18-02-00022. . - ISSN 1420-3049

РУБ Biochemistry & Molecular Biology + Chemistry, Multidisciplinary
Рубрики:
SPIN-STATE TRANSITIONS
   CO3+ ION
   CONDUCTIVITY
   TEMPERATURE
   BEHAVIOR
Кл.слова (ненормированные):
rare-earth cobalt oxides -- multiplicity fluctuations -- structural -- magnetic -- electrical -- and dilatation properties
Аннотация: The structural, magnetic, electrical, and dilatation properties of the rare-earth NdCoO3 and SmCoO3 cobaltites were investigated. Their comparative analysis was carried out and the effect of multiplicity fluctuations on physical properties of the studied cobaltites was considered. Correlations between the spin state change of cobalt ions and the temperature dependence anomalies of the lattice parameters, magnetic susceptibility, volume thermal expansion coefficient, and electrical resistance have been revealed. A comparison of the results with well-studied GdCoO3 allows one to single out both the general tendencies inherent in all rare-earth cobaltites taking into account the lanthanide contraction and peculiar properties of the samples containing Nd and Sm.

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Держатели документа:
RAS, Kirensky Inst Phys, Fed Res Ctr KSC, SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC, Inst Chem & Chem Technol, SB, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia.
Russian Acad Sci, Ioffe Inst, St Petersburg 194021, Russia.

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Solovyov, Leonid A.; Vereshchagin, Sergey N.; Gavrilkin, Sergey Yu.; Tsvetkov, Alexey Yu.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Gorev, M. V.; Горев, Михаил Васильевич; Novikov, Sergey V.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Science FoundationRussian Science Foundation (RSF) [18-02-00022]
}
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Electrical and mechanical properties of the high-permittivity ultra-high-molecular-weight polyethylene-based composite modified by carbon nanotubes / I. A. Markevich, G. E. Selyutin, N. A. Drokin, A. G. Selyutin // Tech. Phys. - 2020. - Vol. 65, Is. 7. - P. 1106-1113, DOI 10.1134/S1063784220070129. - Cited References: 39 . - ISSN 1063-7842
Аннотация: A composite based on ultra-high-molecular-weight polyethylene (UHMWPE) added with 1 wt % of multiwalled carbon nanotubes (MWCNTs) with a high permittivity (ε = 4.5) and a low dielectric loss (tanδ = 10–2) in the frequency range from 100 Hz to 100 MHz has been synthesized, and its main mechanical characteristics have been studied. The material has a low (22 MPa) breaking strength, a high (700%) tensile elongation, and an abrasion resistance higher than that of pure UHMWPE by 37%. It is shown using the X-ray diffraction and differential scanning calorimetry data that the changes in the mechanical properties of the composite are related to the changes in the polymer matrix structure under the action of the high-intensity ultrasonic radiation used for embedding MWCNTs into the polymer.

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Публикация на русском языке Электрофизические и механические свойства композита с повышенной диэлектрической проницаемостью на основе сверхвысокомолекулярного полиэтилена, модифицированного углеродными нанотрубками [Текст] / И. А. Маркевич, Г. Е. Селютин, Н. А. Дрокин, А. Г. Селютин // Журн. техн. физ. - 2020. - Т. 90 Вып. 7. - С. 1151-1158

Держатели документа:
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Markevich, I. A.; Selyutin, G. E.; Drokin, N. A.; Дрокин, Николай Александрович; Selyutin, A. G.
}
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Nikolaev, S. V.
Electronic Structure and Conductivity of a Disordered A1–xBx Binary Alloy in the Cluster Approach for the Hubbard Model / S. V. Nikolaev, Y. S. Orlov, V. A. Dudnikov // J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 5. - P. 823-837, DOI 10.1134/S1063776120100131. - Cited References: 27. - This study was supported by the Foundation “Basis” for development of theoretical physics and mathematics, Russian Foundation for Basic Research (project no. 19-03-00017), Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project “Electronic correlation effects and multiorbital physics in iron-based materials and cuprates” (no. 19-42-240007) and research project “Features of electron-phonon coupling in high-temperature superconductors with strong electronic correlations” (no. 18-42-240017) . - ISSN 1063-7761
Кл.слова (ненормированные):
Electronic structure -- Hubbard model -- Boltzmann -- Cluster approach -- Disordered system -- Electrical conductivity -- Electronic band structure -- Linear-response theory -- Strong electron correlations -- Binary alloys
Аннотация: We propose a method for calculating the electronic band structure of disordered systems with strong electron correlations. Various approaches to the description of electrical conductivity of disordered systems are considered. Calculations are based on determining the one-particle Green function of the system, which is averaged over different configurations of a cluster, on the Boltzmann formalism, and the Kubo linear response theory. As the basic model, we use the Hubbard model for an A –xBx binary alloy.

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Публикация на русском языке Николаев, Сергей Викторович. Электронная структура и электропроводность неупорядоченного бинарного сплава A1-xBx в рамках кластерного подхода для модели Хаббарда [Текст] / С. В. Николаев, Ю. С. Орлов, В. А. Дудников // Журн. эксперим. и теор. физ. - 2020. - Т. 158 Вып. 5. - С. 946-961

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,” Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Николаев, Сергей Викторович
}
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    Новый метод получения прозрачных проводящих пленок оксида индия (III) и оксида индия-олова / Н. П. Фадеева, С. В. Сайкова, Е. В. Пикурова [и др.] // Журн. СФУ. Химия. - 2021. - Т. 14, № 1. - С. 45-58 ; J. Sib. Fed. Univ. Chem., DOI 10.17516/1998-2836-0215. - Библиогр.: 36. - Работа выполнена при поддержке РФФИ (грант № 18-33-00504) и стипендии Президента Российской Федерации (СП-2235.2019.1). В работе использованы приборы ЦКП СФУ и Красноярского регионального центра коллективного пользования ФИЦ КНЦ СО РАН . - ISSN 1998-2836. - ISSN 2313-6049
   Перевод заглавия: А new method of obtaining transparent conducting films of indium (III) oxide and indium-tin oxide

РУБ Chemistry, Multidisciplinary
Рубрики:
ITO THIN-FILMS
ELECTRICAL-PROPERTIES
DEPOSITION
Кл.слова (ненормированные):
пленки -- оксид индия -- оксид индия-олова -- анионообменный синтез -- films -- indium oxide -- indium tin oxide -- anion resin exchange synthesis
Аннотация: В работе получены седиментационно устойчивые золи гидроксидов индия (III) и олова (IV) методом анионообменного синтеза, заключающимся в обменной реакции между ОН‑ионами анионообменной смолы и анионами металлосодержащих растворов. Синтезированные гидрозоли использованы для получения проводящих пленок оксида индия (III) In2O3 и оксида индия, легированного оловом In2O3:Sn, с поверхностным сопротивлением 4 кОм/кв, толщинами 200–500 нм и прозрачностью более 85 %. Подобраны режимы нанесения прекурсоров на стеклянные подложки модифицированным спрей-методом и методом центрифугирования. Пленки исследованы с помощью РФА, СЭМ, оптической микроскопии и спектрофотометрии.
In the work, sedimentation-stable sols of indium (III) and tin (IV) hydroxides were obtained by the Anion Resin Exchange Precipitation, which consists of the exchange reaction between the OH ions of the anion exchange resin and the anions of metal-containing solutions. The synthesized hydrosols were used to obtain conducting films of indium (III) In2O3 oxide and indium oxide doped with Tin In2O3: Sn, with a surface resistance of 4 kOhm/sq, thicknesses of 200-500 urn and a transparency of more than 85 %. The modes of applying precursors to glass substrates by the modified spray method and centrifugation method are selected. Films were studied using XRD, SEM, optical microscopy and spectrophotometry.

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Держатели документа:
Институт химии и химической технологии ФИЦ КНЦ СО РАН Российская Федерация, Красноярск
Сибирский федеральный университет Российская Федерация, Красноярск
ФИЦ «Красноярский научный центр СО РАН» Российская Федерация, Красноярск
Институт физики им. Л. В. Киренского ФИЦ КНЦ СО РАН Российская Федерация, Красноярск

Доп.точки доступа:
Фадеева, Н. П.; Сайкова, С. В.; Пикурова, Е. В.; Воронин, А. С.; Фадеев, Ю. В.; Самойло, А. С.; Тамбасов, Игорь Анатольевич; Tambasov, I. A.

}
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Local electric-field effects and 2nd-harmonic generation in langmuir-blodgett-films / A. N. Botvich, M. P. Shkuryaev, A. N. Vtyurin // Molecular crystals and liquid crystals science and technology : section A- Molecular crystals and liquid crystals. - 1993. - Vol. 230. - P. 259-264. - Cited References: 8 . - ISSN 0140-6566
Аннотация: Local electric field of light waves in Langmuir-Blodgett film is calculated, and its effect on optical second harmonic generation (SHG) is estimated. Strong dependence of SHG intensity on the film thickness is explained.

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Держатели документа:
KRASNOYARSK UNIV,KRASNOYARSK 660036,RUSSIA
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН

Доп.точки доступа:
Botvich, A. N.; Ботвич, Александр Николаевич; Shkuryaev, M. P.; Шкуряев, М. П.; Vtyurin, A. N.; Втюрин, Александр Николаевич; International conference on electrical and related properties of organic solids(6 ; 1992 ; May 18-22 ; Capri, Italy)
}
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10.

Phase stability of nanolaminated epitaxial (Cr1-xFex)2AlC MAX phase thin films on MgO(111) and Al2O3(0001) for use as conductive coatings / H. Pazniak, M. Stevens, M. Dahlqvist [et al.] // ACS Appl. Nano Mat. - 2021. - Vol. 4, Is. 12. - P. 13761-13770, DOI 10.1021/acsanm.1c03166. - Cited References: 51. - This work has been supported by the Deutsche Forschungsgemeinschaft (DFG) within CRC/TRR 270, project B02 (Project-ID 405553726). The calculations were carried out using supercomputer resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC) and the High Performance Computing Center North (HPC2N) partially funded by the Swedish Research Council through grant agreement no. 2018-05973. J.R. acknowledges funding from the Knut and Alice Wallenberg Foundation. Support by the Interdisciplinary Center for Analytics on the Nanoscale (ICAN) of the University of Duisburg-Essen (DFG RIsources reference: RI_00313), a DFG-funded core facility (Project nos. 233512597 and 324659309), is gratefully acknowledged. M.F. acknowledges co-funding by the government of the Russian Federation (agreement no. 075-15-2019-1886) . - ISSN 2574-0970
Кл.слова (ненормированные):
MAX phase -- thin film -- DFT calculations -- pulsed laser deposition -- TEM/EDX -- electrical resistivity
Аннотация: In this study, we model the chemical stability in the (Cr1-xFex)2AlC MAX phase system using density functional theory, predicting its phase stability for 0 ‹ x ‹ 0.2. Following the calculations, we have successfully synthesized nanolaminated (Cr1-xFex)2AlC MAX phase thin films with target Fe contents of x = 0.1 and x = 0.2 by pulsed laser deposition using elemental targets on MgO(111) and Al2O3(0001) substrates at 600 °C. Structural investigations by X-ray diffraction and transmission electron microscopy reveal MAX phase epitaxial films on both substrates with a coexisting (Fe,Cr)5Al8 intermetallic secondary phase. Experiments suggest an actual maximum Fe solubility of 3.4 at %, corresponding to (Cr0.932Fe0.068)2AlC, which is the highest Fe doping level achieved so far in volume materials and thin films. Residual Fe is continuously distributed in the (Fe,Cr)5Al8 intermetallic secondary phase. The incorporation of Fe results in the slight reduction of the c lattice parameter, while the a lattice parameter remains unchanged. The nanolaminated (Cr0.932Fe0.068)2AlC thin films show a metallic behavior and can serve as promising candidates for highly conductive coatings.

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Faculty of Physics, Center for Nanointegration (CENIDE), University of Duisburg-Essen, Duisburg, 47057, Germany
Materials Design, Department of Physics, Chemistry, and Biology (IFM), Linkoping University, Linkoping, SE-581 83, Sweden
Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Julich, Julich, 52425, Germany
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pazniak, H.; Stevens, M.; Dahlqvist, M.; Zingsem, B.; Kibkalo, L.; Felek, M.; Varnakov, S. N.; Варнаков, Сергей Николаевич; Farle, M.; Фарле, Михаель; Rosen, J.; Wiedwald, U.
}
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11.

The effect of heat treatment on electrical properties of [ZnO/C]25 multilayer structure / S. Y. Pankov, V. A. Foshin, M. A. Kashirin [et al.] // AIP Conf. Proc. - 2020. - Vol. 2313DOI 10.1063/5.0032291. - Cited References: 5. - This work was supported by the Ministry of Education and Science of the Russian Federation of the state task (project No. FZGM-2020-0007). We are grateful to the Center for the common use of Federal Research Center KSC SB RAS for electron microscopy studies
Аннотация: The effect of heat treatment on magnetoresistance of [ZnO/С]25 multilayered thin films prepared by ion-beam sputtering has been investigated. A decrease in the magnetoresistance with an increase in the annealing temperature was detected, which is associated with a change in the mechanism of electrical transport.

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Держатели документа:
Department of Solid State Physics, Voronezh State Technical University, Voronezh, 394026, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Pankov, S. Y.; Foshin, V. A.; Kashirin, M. A.; Makagonov, V. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; International Young Researchers Conference on Physics, Technology, Innovations(7th ; 18 - 22 May 2020 ; Ekaterinburg, Russian Federation)
}
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12.

Tunable meta-surface antenna array with holographic beamforming / K. V. Lemberg, A. N. Kosmynin, D. A. Stupnitsky [et al.] // 7th All-Russian Microwave Conference (RMC) : proceedings : IEEE, 2020. - P. 159-161, DOI 10.1109/RMC50626.2020.9312354. - Cited references: 11 . - ISBN 978-1-7281-8078-6
Аннотация: The paper describes tunable meta-surface antenna arrays operation principle. In such an arrays beamforming is carried out by modulating the coupling coefficients between a wave traveling along the surface and electrically small radiators. It is shown that the law of coupling coefficient modulation can be calculated using the principles of holography on the basis of the given “reference” (corresponding to the excitation of the meta-surface) and “object” (corresponding to the required radiation pattern) waves. The results of numerical simulation of the X-band linear antenna array with liquid crystal control elements, which using the described beamforming principle, are presented.

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Публикация на русском языке Антенная решетка на основе управляемой метаповерхности с голографическим принципом диаграммообразования [Текст] / К. В. Лемберг, А. Н. Космынин, Д. А. Ступницкий [и др.]

Доп.точки доступа:
Lemberg, K. V.; Лемберг, Константин Вячеславович; Kosmynin, A. N.; Stupnitsky, D. A.; Grushevsky, E. O.; Грушевский, Евгений Олегович; Podshivalov, I. V.; Подшивалов, Иван Валерьевич; All-Russian Microwave Conference(7 ; 2020 ; Nov. ; 25-27 ; Moscow); Institute of Electrical and Electronics Engineers
}
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13.

Emergence of ferromagnetism in nanoparticles of BeTiO3 ceramic with the perovskite structure / A. V. Pavlov, L. I. Kveglis, D. N. Saprykin [et al.] // Inorg. Mater.: Appl. Res. - 2021. - Vol. 12, Is. 1. - P. 88-93, DOI 10.1134/S2075113321010330. - Cited References: 21. - The part of the work involving calculations was supported by the Russian Science Foundation (grant no. 18-19-00268) . - ISSN 2075-1133
Кл.слова (ненормированные):
titanium dioxide nanopowder -- rutile structure -- beryllium ceramic -- magnetic hysteresis -- electrical resistance -- electronic structure -- icosahedral clusters
Аннотация: Emergence of ferromagnetism and an increase in the electrical conductance of BeTiO3 beryllium ceramic with the perovskite structure were discovered experimentally. To explain the reason for appearance of the metallic properties, models are proposed, and calculations of the electronic structure of nanoclusters with different short-range order are performed.

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Публикация на русском языке Появление ферромагнетизма в наночастицах керамики со структурой перовскита BeTiO3 [Текст] / А. В. Павлов, Л. И. Квеглис, Д. Н. Сапрыкин [и др.] // Материаловедение. - 2020. - № 5. - С. 15-20

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Sarsen Amanzholov East Kazakhstan State University, Ust’-Kamenogorsk, 070000, Kazakhstan
Tomsk State University, Tomsk, 634050, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pavlov, A. V.; Kveglis, L. I.; Saprykin, D. N.; Nasibullin, R. T.; Kalitova, A. A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Nemtsev, I. V.; Немцев, Иван Васильевич; Kantai, N.
}
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14.

Magnetoresistive effect in the cobalt-doped bismuth ferrite films / O. B. Romanova, S. S. Aplesnin, M. N. Sitnikov [et al.] // J. Mater. Sci.: Mater. Electron. - 2020. - Vol. 31, Is. 10. - P. 7946-7952, DOI 10.1007/s10854-020-03333-7. - Cited References: 39 . - ISSN 0957-4522. - ISSN 1573-482X

РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
BIFEO3 THIN-FILMS
   ELECTRICAL-PROPERTIES
   COFE/CU MULTILAYERS
   GIANT MAGNETORESISTANCE
Аннотация: Bismuth ferrite films have been synthesized by the burst-mode deposition of the BiFe0.8Co0.2O3 solid solutions onto object glasses. The surface morphology of the BiFe0.8Co0.2O3 films has been examined. The effect of electron doping implemented by substitution of cobalt for iron in the BiFe0.8Co0.2O3 films on their magnetic, electrical, and galvanomagnetic properties has been investigated at temperatures of 77-600 K in magnetic fields of up to 12 kOe. The negative magnetoresistance has been observed, which changes its sign in the region of formation of magnetically heterogeneous states and attain its maximum value above room temperature. It has been established that the magnetoresistance is caused by the competition of electron hoppings and localization of electrons in a magnetic field. Using the Hall measurements, the carrier type has been determined. A model of the change in the curriers sign upon heating due to the shift of the chemical potential relative to the impurity subband has been proposed.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.
Natl Acad Sci Belarus, Sci Pract Mat Res Ctr, Minsk 220072, BELARUS.

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Udod, L. V.; Удод, Любовь Викторовна; Begisheva, O. B.; Demidenko, O. F.
}
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15.

Correlation between magneto-optical and transport properties of Sr doped manganite films / Y. E. Samoshkina [et al.] // J. Alloys Compd. - 2019. - Vol. 782. - P. 334-342, DOI 10.1016/j.jallcom.2018.12.158. - Cited References: 51. - The authors are grateful to A.V. Malakhovskii (Kirensky Institute of Physics, Federal Research Center KSC SB RAS) for fruitful discussions of the magneto-optics data and V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. The work was supported partly by Russian Academy of Sciences , [grant number 0356-2017-0030 ], and the Russian Foundation for Basic Research , [grant number 16-32-00209 ]. . - ISSN 0925-8388
Кл.слова (ненормированные):
Thin films -- Manganites -- Crystal structure -- Electrical transport -- Electronic properties -- Magnetic circular dichroism
Аннотация: The features of electronic structure of La0.7Sr0.3MnO3 Pr0.8Sr0.2MnO3, and Pr0.6Sr0.4MnO3 polycrystalline films of different thickness have been investigated using magnetic circular dichroism (MCD) in the range of 1.1–4.2 eV. The temperature behavior of the samples electrical resistance were also has been studied. It was found that films with high Sr content (0.3 and 0.4) act as high-temperature semiconductors, while the maximum in the temperature dependences of resistivity these films indicates the transition of the samples to the metallic state at some temperature TM-S, which is different for different sample thickness. The films with the lower Sr content (0.2) act as insulators in the used temperature range. The MCD spectra have been decomposed to the Gaussian-shaped lines, and the temperature dependence of intensity of each line has been analyzed in comparison with temperature dependence of the films magnetization and with their electric conductivity type. Different temperature behavior of the intensity of four specified Gaussian-lines was revealed for semiconductor films. In the case of insulating Pr0.8Sr0.2MnO3 samples, the intensity of three specified Gaussian lines changes with the temperature in the same way as the magnetization changed. It was established that the lanthanide (La, Pr) type does not affect the MCD spectra shape for the films with the same electrical conductivity type. Besides, the correlation between the MCD data of the films and their conductivity type was revealed. Due to the detailed analysis of the specified Gaussian lines with taking into account the well-known in the literature absorption bands, lying outside the studied spectral region, the MCD bands for the studied manganite films have been identified with electronic transitions of a different nature.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
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16.

Effect of oxygen nonstoichiometry on electrical conductivity and thermopower of Gd0.2Sr0.8FeO3-δ ferrite samples / V. Dudnikov [et al.] // Materials. - 2019. - Vol. 12, Is. 1. - Ст. 74, DOI 10.3390/ma12010074. - Cited References: 24 . - ISSN 1996-1944
Кл.слова (ненормированные):
Rare-earth-substituted cobalt oxides -- Stability -- Thermoelectric properties
Аннотация: The behavior of the resistivity and thermopower of the Gd0.2Sr0.8FeO3−δ ferrite samples with a perovskite structure and the sample stability in an inert gas atmosphere in the temperature range of 300–800 K have been examined. It has been established that, in the investigated temperature range, the thermoelectric properties in the heating‒cooling mode are stabilized at δ ≥ 0.21. It is shown that the temperature dependencies of the resistivity obtained at different δ values obey the activation law up to the temperatures corresponding to the intense oxygen removal from a sample. The semiconductor‒semiconductor electronic transitions accompanied by a decrease in the activation energy have been observed with increasing temperature. It is demonstrated that the maximum thermoelectric power factor of 0.1 µW/(cm·K2) corresponds to a temperature of T = 800 K.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Ioffe Institute, St. Petersburg, 194021, Russian Federation

Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Fedorov, A. S.; Федоров, Александр Семенович; Solovyov, L.; Vereshchagin, S.; Burkov, A. T.; Novikov, S.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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17.

    Govorun, I. V.
    New method for observation ferromagnetic resonance spectra / I. V. Govorun, A. A. Leksikov // 14th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2018 : Proceedings. - 2018. - P. 41-44, DOI 10.1109/APEIE.2018.8545359. - Cited References: 8 . - ISBN 9781538670545
Рубрики:
Magnetomechanical effects
   Magnetic films
   Magnetic fields
Кл.слова (ненормированные):
Microstrip resonator -- coupling coefficient -- ferromagnetic resonance -- damping pole
Аннотация: A new method for observation of ferromagnetic resonance spectra is demonstrated. Its operation based on the registering a damping pole in the frequency response of two-resonator microstrip structure containing a sample under investigation. A damping pole arises due to mutual compensation of capacitive (electric) and inductive (magnetic) interactions between the resonators and this compensation get broken in the ferromagnetic resonance.

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Держатели документа:
Krasnoyarsk Scientific Center, SB, RAS, Krasnoyarsk, Russian Federation
L. V. Kirensky Institute of Physics, SB, RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Leksikov, A. A.; Лексиков, Александр Александрович; International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering(14 ; 2 - 6 October 2018 ; Novosibirsk, Russia); Institute of Electrical and Electronics Engineers
}
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18.

    Determination of the existence region of a Griffith-like phase in Pr1–xSrxMnO3/YSZ films / Y. E. Samoshkina [et al.] // J. Exp. Theor. Phys. - 2017. - Vol. 125, Is. 6. - P. 1090-1095, DOI 10.1134/S106377611712007X. - Cited References:34. - This study was supported by the Russian Foundation for Basic Research (project no. 16-32-00209mol_a) and the Council for Grants from the President of the Russian Federation (NSh7559.2016.2). E. A. Stepanova and D. S. Neznakhin were supported by the RF Ministry of Education and Sciences (State target no. 3.61212017/8.9). . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
COLOSSAL MAGNETORESISTANCE
   ELECTRICAL-PROPERTIES
   RARE-EARTH
Аннотация: We have studied the temperature dependences of the magnetic susceptibility and the electron magnetic resonance in Pr1–xSrxMnO3/YSZ polycrystalline films (x = 0.2, 0.4). The paramagnetic properties of samples indicate the presence of short-range-order ferromagnetic correlations above the phase transition temperature (Tc ). The existence region of such correlations has been considered using the Griffith theory.

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Публикация на русском языке Определение области существования фазы, подобной фазе Гриффитса, в пленках Pr1-xSrxMnO3/YSZ [Текст] / Ю. Э. Самошкина [и др.] // Журн. эксперим. и теор. физ. - 2017. - Т. 152 Вып. 6. - С. 1279-1285

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Eltsyn Ural Fed Univ, Ekaterinburg 620002, Russia.
Natl Res Technol Univ MISiS, Moscow 119049, Russia.

Доп.точки доступа:
Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Stepanova, E. A.; Neznakhin, D. S.; Andreev, N. V.; Chichkov, V. I.; Russian Foundation for Basic Research [16-32-00209mol_a]; Council for Grants from the President of the Russian Federation [NSh7559.2016.2]; RF Ministry of Education and Sciences [3.61212017/8.9]
}
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19.

Belyaev, B. A.
Impedance spectroscopy study of the electrical properties of cation-substituted barium hexaaluminate ceramics / B. A. Belyaev, N. A. Drokin, V. A. Poluboyarov // Phys. Solid State. - 2018. - Vol. 60, Is. 2. - P. 274-280, DOI 10.1134/S1063783418020063. - Cited References:18 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
DIELECTRIC-RELAXATION
LIQUID-CRYSTALS
SPECTRA
Аннотация: We report on the behavior of frequency and temperature dependences of the impedance of a measuring cell in the form of a parallel-plate capacitor filled with barium hexaaluminate ceramics with four aluminum cations replaced by iron (BaO · 2Fe2O3 · 4Al2O3). The measurements have been performed in the frequency range of 0.5–108 Hz at temperatures of 20-375°C. A technique for determining the electrical properties of the investigated ceramics is proposed, which is based on an equivalent electric circuit allowing the recorded impedance spectra to be approximated with sufficiently high accuracy. The established spectral features are indicative of the presence of two electric relaxation times different from each other by three orders of magnitude. This fact is explained by the difference between the charge transport processes in the bulk of crystallites and thin intercrystallite spacers, for which the charge activation energies have been determined.

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Публикация на русском языке Беляев, Борис Афанасьевич. Исследование электрофизических характеристик катион-замещенной керамики гексаалюмината бария методом импедансной спектроскопии [Текст] / Б. А. Беляев, Н. А. Дрокин, В. А. Полубояров // Физ. тверд. тела. - 2018. - Т. 60 Вып. 2. - С. 269–275

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.
Russian Acad Sci, Inst Solid State Chem & Mechanochem, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Poluboyarov, V. A.; Беляев, Борис Афанасьевич
}
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20.

Magnetic and electrical properties of high-hydrogenated CoxZn1-xO thin films / Yu. E. Samoshkina [et al.] // Магнитные материалы. Новые технологии : тез. докл. VIII Байкал. междунар. конф. BICMM-2018 / чл. прогр. ком. R. S. Iskhakov [et al.]. - Иркутск, 2018. - P. 123-124. - Библиогр.: 2 . - ISBN 978-5-00133-051-6

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Iskhakov, R. S. \чл. прогр. ком.\; Исхаков, Рауф Садыкович; Ovchinnikov, S. G. \чл. прогр. ком.\; Овчинников, Сергей Геннадьевич; Aplesnin, S. S. \чл. прогр. ком.\; Аплеснин, Сергей Степанович; Balaev, D. A. \чл. прогр. ком.\; Балаев, Дмитрий Александрович; Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Edel'man, I. S.; Эдельман, Ирина Самсоновна; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Neznakhin, D. S.; Stepanova, E. A.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(8 ; 2018 ; авг. ; 24-28 ; Иркутск); "Magnetic materials. New tecnologies", Baikal International Conference(8 ; 2018 ; Aug. 24-28 ; Irkutsk); Иркутский государственный университет
}
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