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Coexistence of the electric polarization and conductive current in the bismuth–neodymium ferrite garnet films / S. S. Aplesnin, A. N. Masyugin, M. N. Volochaev, T. Ishibashi // J. Mater. Sci. Mater. Electron. - 2021. - Vol. 32. - P. 3766-3781, DOI 10.1007/s10854-020-05121-9. - Cited References: 42 . - ISSN 0957-4522
Кл.слова (ненормированные):
Bismuth -- Bismuth compounds -- Dielectric materials -- Epitaxial films -- Ferroelectricity -- Gallium compounds -- Garnets -- Hysteresis -- Iron compounds -- Neodymium -- Neodymium compounds -- Piezoelectricity -- Single crystals -- Substrates
Аннотация: The Nd1Bi2Fe5O12/Nd2Bi1Fe4Ga1O12 polycrystalline films on the glass substrate and the Nd0.5Bi2.5Fe5O12 epitaxial films on the single-crystal gadolinium gallium garnet substrate have been investigated by impedance and dielectric spectroscopy. The inductive contribution to the impedance and two relaxation channels related to ferroelectric domains and migration polarization have been established. The magnetocapacitance and magnetoimpedance have been determined. The conductive and polarization currents and the phase difference between them for the films of two types have been determined. The critical temperatures of the polarization disappearance and hysteresis I–V have been found. A model of the polarization caused by the piezoelectric effect and flexoelectric interaction has been proposed. I–V hysteresis is explained by the presence of ferroelectric domains near the interface and is associated with the hysteresis of the electric polarization.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

Доп.точки доступа:
Aplesnin, S. S.; Masyugin, A. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Ishibashi, T.
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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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    Thermometry and up-conversion luminescence of Ln3+ (Ln = Er, Ho, Tm)-doped double molybdate LiYbMo2O8 / X. Y. Yun, J. Zhou, Y. H. Zhu [et al.] // J. Mater. Sci.: Mater. Electron. - 2020. - Vol. 31, Is. 21. - P. 18370-18380, DOI 10.1007/s10854-020-04382-8. - Cited References: 41. - This work is supported by the National Natural Science Foundation of China (No. 21576002 and 61705003) and Beijing Technology and Business University Research Team Construction Project (No. PXM2019_014213_000007) . - ISSN 0957-4522. - ISSN 1573-482X
   Перевод заглавия: Термометрия и апконверсионная люминесценции двойного молибдата LiYbMo2O8, легированного Ln (3+) (Ln = Er, Ho, Tm)

РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
TEMPERATURE SENSING BEHAVIOR
   OPTICAL THERMOMETRY
   EMISSION
   PHOSPHOR
Аннотация: The discovery of stable and highly sensitive up-conversion (UC) phosphors using the fluorescence intensity ratio (FIR) is a significant challenge in the field of optical temperature sensor. Er3+/Ho3+/Tm3+-doped LiYbMo2O8 UC phosphors with excellent luminescence properties were successfully synthesized through a high-temperature solid-state reaction, and the crystal structure and UC luminescence properties were discussed in detail. The UC process has been investigated by spectra pump power dependence and further explained via the energy level diagram. All emission processes about Er3+ ions and Ho3+ ions are two-photon processes and the blue emission process about Tm3+ ions is a combination of two-photon process and three-photon process. Thermal sensing performances depended on FIR technology were estimated and the sensitivities of LiYb1−xMo2O8:xLn3+ included absolute sensitivity (Sa) and relative sensitivity (Sr) can produce particular change rules with the temperature, which can serve as excellent candidates for applications in optical temperature sensing. With the increase of temperature, the maximum values of Sr of LiYb1−xMo2O8:xLn3+ are 1.16% K−1 (0.05Er3+), 0.25% K−1 (0.01Ho3+), and 0.51% K−1 (0.01Tm3+), respectively. In addition, the Sa value of LiYb0.95Mo2O8:0.05Er3+ phosphor will reach the maximum (1.08% K−1) at 475 K, while the maximum values of Sa of LiYb0.99Mo2O8:0.01Ho3+ and LiYb0.99Mo2O8:0.01Tm3+ are 0.16% K−1, 0.14% K−1.

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Держатели документа:
Beijing Technol & Business Univ, Sch Sci, Beijing 100048, Peoples R China.
RAS, Fed Res Ctr, Kirensky Inst Phys, Lab Crystal Phys,KSC,SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Yun, Xiangyan; Zhou, Jun; Zhu, Yaohui; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jia, Yetong; Wei, Chao; Xu, Denghui; Sun, Jiayue
}
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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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    Zobov, V. E.
    Sequences of selective rotation operators for three group clustering on qutrits by means quantum annealing / V. E. Zobov, I. S. Pichkovskiy // Proceedings of the International Conference "Micro- and Nanoelectronics – 2021". ICMNE – 2021. - 2021. - Ст. q3-02. - P. 149. - Cited References: 4
   Перевод заглавия: Последовательности селективных операторов поворотов для кластеризации на три группы на кутритах посредством квантового отжига

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Доп.точки доступа:
Pichkovskiy, I. S.; Зобов, Владимир Евгеньевич; "Micro- and Nano-Electronics", International Conference(2021 ; Oct. ; Zvenigorod); "Микро- и наноэлектроника", международная конференция(2021 ; окт. ; Звенигород)Квантовая информатика, симпозиум(2021 ; окт. ; Звенигород); Российская академия наук; Физико-технологический институт имени К.А. Валиева РАН
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European Quantum Electronics Conference (2021 ; June ; 21- 25)

Accidental bound state in the continuum in a chain of dielectric disks / M. S. Sidorenko, O. N. Sergaeva, Z. F. Sadrieva [et al.] // Optics InfoBase Conference Papers. - 2021. - 2021 European Quantum Electronics Conference, EQEC 2021 - Part of 2021 Conference on Lasers and Electro-Optics Europe, CLEO 2021 (21 June 2021 through 25 June 2021, Virtual, Online) Conference code: 174130. - Ст. jsi_2_4. - Cited References: 2. - The work was supported by RFBR (19-02-00419), the grant of the President of the Russian Federation (MK-2224.2020.2) and the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS
Аннотация: We experimentally analyze for the first time an off-Gamma BIC in a one-dimensional periodic chain of disks and demonstrate its transformation to a resonant state with the decrease of the chains length.

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Держатели документа:
Department of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russian Federation
Research Laboratory of Electronics, Massachusetts Institute of Technology, 50 Vassar St., Cambridge, MA, United States
Kirensky Institute of Physics, Federal Research Center, KSC, SB, RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Sidorenko, M. S.; Sergaeva, O. N.; Sadrieva, Z. F.; Roques-Carmes, C.; Muraev, P. S.; Мураев, Павел Сергеевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Bogdanov, A. A.; European Quantum Electronics Conference(2021 ; June ; 21- 25)
}
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Muraev, P. S.
Quantum transport in a one-dimensional flux rhombic lattice / P. S. Muraev, A. R. Kolovsky // Quantum Electron. - 2021. - Vol. 51, Is. 6. - P. 502-505, DOI 10.1070/QEL17559. - Cited References: 19. - This work was supported by the Russian Science Foundation (Grant No. 19-12-00167) . - ISSN 1063-7818. - ISSN 1468-4799

РУБ Engineering, Electrical & Electronic + Quantum Science & Technology + Physics, Applied

Кл.слова (ненормированные):
quantum transport -- rhombic lattice -- pseudoclassical approach
Аннотация: We analyse stationary current of the bosonic particles in a flux rhombic lattice connecting two particle reservoirs. For vanishing interparticle interactions the current is shown to monotonically decrease as the flux is increased and become strictly zero for the Peierls phase equal to π. Nonzero interactions modify this dependence and for moderate interaction strength the current is found to be independent of the flux value.

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Публикация на русском языке Мураев, Павел Сергеевич. Квантовый перенос в одномерной вихревой ромбической решетке [Текст] / П. С. Мураев, А. Р. Коловский // Квант. электроника. - 2021. - Т. 51 № 6. - С. 502-505

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Akad Gorodok 50,Stroenie 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Prosp Svobodnyi 79, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Kolovsky, A. R.; Коловский, Андрей Радиевич; Мураев, Павел Сергеевич; Russian Science Foundation [19-12-00167]
}
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    Zobov, V. E.
    On the control of the spread of quantum information in multiple quantum NMR spectroscopy of solids / V. E. Zobov, A. A. Lundin // Proceedings of the International Conference "Micro- and Nanoelectronics – 2021". ICMNE – 2021 : book of abstracts : Oct. 4-8, 2021, Moscow - Zvenigorod, Russia. - 2021. - Ст. q3-02. - P. 149. - Cited References: 5
   Перевод заглавия: О контроле распространением квантовой информации в многоквантовой ЯМР спектроскопии твердых тел

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Доп.точки доступа:
Lundin, A. A.; Лундин, Андрей Арнольдович; Зобов, Владимир Евгеньевич; "Micro- and Nano-Electronics", International Conference(2021 ; Oct. ; Zvenigorod); "Микро- и наноэлектроника", международная конференция(2021 ; окт. ; Звенигород); Квантовая информатика, симпозиум(2021 ; окт. ; Звенигород)Российская академия наук; Физико-технологический институт имени К.А. Валиева РАН
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    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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10.

    Zobov, V. E.
    Sequences of selective rotation operators to engineer interactions for quantum annealing on three qutrits / V. E. Zobov, I. S. Pichkovskiy ; ed.: V. F. Lukichev, K. V. Rudenko // Proc. SPIE. - 2019. - Vol. 11022: International Conference on Micro- and Nano-Electronics 2018. - Ст. UNSP 110222V, DOI 10.1117/12.2521253. - Cited References: 21
   Перевод заглавия: Последовательности селективных операторов поворотов для создания взаимодействий для квантового отжига на трех кутритах

РУБ Nanoscience & Nanotechnology + Optics
Рубрики:
ALGORITHM
Кл.слова (ненормированные):
quantum annealing -- factorization -- qutrit -- selective rotation operators
Аннотация: We have done simulating of factorization the number 15 on three qutrits, represented by the spins S = 1, by quantum annealing. We assume that strong one-spin interaction allow selectively operate on different transitions between levels of the each qutrit. We present a sequence of selective rotation operators to engineer from dipole-dipole interaction a time-dependent effective Hamiltonian necessary for solving the problem. Also we find dependence of fidelity versus different parameters: magnetic field, total annealing time, and duration of time step, when the continuous variation of the Hamiltonian is replaced by a discrete one.

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Держатели документа:
KSC SB RAS, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia.

Доп.точки доступа:
Pichkovskiy, I. S.; Lukichev, V.F. \ed.\; Rudenko, K.V. \ed.\; Зобов, Владимир Евгеньевич; International Conference on Micro- and Nano-Electronics(2018 ; Oct. ; 1-5 ; Zvenigorod, Russia)
}
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11.

Localization and transfer of charge carriers in CuO nanopowder by impedance spectroscopy / A. A. Lepeshev [et al.] // J. Mater. Sci.: Mater. Electron. - 2018. - Vol. 29, Is. 14. - P. 12118–12125, DOI 10.1007/s10854-018-9319-2. - Cited References: 26. - The work was performed with a support of the Grant of the Russian Science Foundation (Project No. 16-19-10054). . - ISSN 0957-4522
Кл.слова (ненормированные):
Copper oxides -- Electric charge -- Electric fields -- Electrodes -- Metal nanoparticles -- Permittivity -- Spectroscopy
Аннотация: Particular electro-physical characteristics of CuO nanopowder were investigated by impedance spectroscopy using a sensor based on interdigitated structure in the frequency range from 1 Hz to 100 MHz. The results of investigation were considered. Simulation of impedance spectra by equivalent electric circuits was carried out for numerical approximations of the frequency dependences of the dielectrical permittivity and conductivity. Electric charge accumulation of on the boundaries of nanoparticles and near the metal electrodes of the sensor was revealed. It was shown that a double electric layer is formed near the electrodes, which leads to the appearance of anomalously large values of dielectrical permittivity and an increase in the conductivity in the low-frequency region. The obtained results can be explained by proton conductivity in the nanopowder caused by moisture which is adsorbed on the surface of the nanoparticles. It was shown that after high-temperature annealing of CuO nanopowders, accumulation of electric charges was not observed. It was established that hopping or polaron conductivity occurs in the annealed CuO samples, which increases with increasing electric field frequency according to the power law with a fractional exponent.

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Держатели документа:
Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Science, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian Branch, Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lepeshev, A. A.; Drokin, N. A.; Дрокин, Николай Александрович; Ushakov, A. V.; Karpov, I. V.; Fedorov, L. Y.; Bachurina, E. P.
}
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12.

Zobov, V. E.
Exponential bound on heating rate in periodically driven spin systems / V. E. Zobov, M. M. Kucherov // Proceedings of the International Conference "Micro- and Nanoelectronics – 2018". ICMNE – 2018 : book of abstracts : October 1-5, 18, Moscow – Zvenigorod, Russia. - 2018. - Ст. q3-03. - P. 150, DOI 10.29003/m209.ICMNE-2018. - Cited References: 3 . - ISBN 978-5-317-05917-0

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Доп.точки доступа:
Kucherov, M. M.; Зобов, Владимир Евгеньевич; "Micro- and Nano-Electronics", International Conference(2018 ; Oct. ; Zvenigorod); "Микро- и наноэлектроника", международная конференция(2018 ; окт. ; Звенигород)Квантовая информатика, симпозиум(2018 ; окт. ; Звенигород); Российская академия наук; Физико-технологический институт имени К.А. Валиева РАН
}
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13.

    Muzalevskiy, K. V.
    Temperature dependence of the backscattering coefficient measured by ALOS PALSAR during cooling and heating of tundra topsoil / K. V. Muzalevskiy // Журн. радиоэлектрон. - 2019. - № 11 ; J. Radio Electron., DOI 10.30898/1684-1719.2019.11.19. - Cited References: 11. - The study was performed thanks to the Program of SB RAS (project No.0356-2019-0004), JAXA project No.PI 1422002. . - ISSN 1684-1719
   Перевод заглавия: Температурная зависимость коэффициента обратного рассеяния, измеренного ALOS PALSAR в ходе охлаждения и нагревания поверхности тундровой почвы
Кл.слова (ненормированные):
ALOS PALSAR -- backscattering -- active layer -- topsoil temperature -- ALOS PALSAR -- обратное рассеяние -- деятельный слой -- температура почвы
Аннотация: In this paper, dependences of backscattering coefficient on Arctic tundra soil temperature were investigated. The backscattering coefficient was measured by ALOS PALSAR (1.3GHz) over areas near to Imnaviat weather station in the North Slope of Alaska in the period from January 12, 2009 to April 20, 2011. It has been experimentally and theoretically shown that there is a strong correlation relationship no worse than 0.76 between the surface soil temperature measured by weather stations and backscattering coefficient. The variations of the backscattering coefficient was found to be about 5-6 dB over the test site when soil surface temperature changes from -10°С to 10°С. This study contributes to further understanding the processes of scattering of frozen Arctic soils that is pertinent to developing new remote sensing algorithms for the permafrost region.
В данной работе представлены результаты исследования температурной зависимости коэффициента обратного радарного рассеяния, измеренного ALOS (PALSAR) на частоте 1,26ГГц, для тундрового тестового участка, расположенного на Северном склоне Аляски вблизи метеорологической станции Имнавиат. Экспериментально и теоретически показано, что температура поверхности почвы, измеренная метеостанцией в период с 12 января 2009 года по 20 апреля 2011 года, и коэффициент обратного рассеяния нелинейно зависят друг от друга с квадратом коэффициента корреляции 0,76. Данная зависимость удовлетворительно может быть описана моделью рассеяния Оха и температурно-зависимой диэлектрической моделью талых и мёрзлых тундровых почв с высоким содержанием органического вещества. Показано, что в диапазоне изменений температуры поверхности почвы от -10°С до 10°С вариации коэффициента обратного рассеяния на испытательном участке не превышают 5-6 дБ. Данное исследование способствует дальнейшему пониманию процессов рассеяния микроволн мерзлыми арктическими почвами, с целью разработки новых алгоритмов дистанционного зондирования Арктических регионов.

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Держатели документа:
Kirensky Institute of Physics Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Музалевский, Константин Викторович

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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.

Structure and electrophysical properties of thin-film SnO2–In2O3 heterostructures / O. V. Zhilova [et al.] // J. Mater. Sci.: Mater. Electron. - 2019. - Vol. 30, Is. 13. - P. 11859–11867, DOI 10.1007/s10854-019-01503-w. - Cited References: 28. - The authors of the article want to express their gratitude to Professor S.A. Gridnev for helpful discussions. This work was supported by the Ministry of Education and Science in the framework of the state task (project No: 3.1867.2017/4.6). . - ISSN 0957-4522
Кл.слова (ненормированные):
Semiconducting indium compounds
Аннотация: The structure and electrical properties of In2O3 and SnO2 oxide semiconductors and heterostructures based on them has been experimentally investigated. The films were prepared by the method of layer-by-layer deposition using the ion-beam sputtering. The transition from the two-phase film of amorphous SnO2 and In2O3 islands, formed during the layer-by-layer deposition, to a multilayer structure consisting of the amorphous SnO2 and In2O3 continuous layers occurs with an increase in the bilayer thickness. The electrophysical properties of the (SnO2/In2O3)69 heterostructures are determined by the transition from the random distribution of SnO2 and In2O3 amorphous phases to a multilayer structure and the temperature range of measurement. For all studied systems, a consistent change in the prevailing mechanism of conductivity is observed at temperatures from 77 to 300 K. In (SnO2/In2O3)69 thin films with a bilayer thickness hbl ˂ 2.5 nm, change of the prevailing conduction mechanism takes place according to the next sequence: variable range hopping conduction over localized states near the Fermi level, hopping conduction over the nearest neighbors and hopping transfer of carriers excited into localized states near the band edges at temperatures close to room temperature.

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Voronezh State Technical University, Moskovskij Avenue, 14, Voronezh, 394000, Russian Federation
Kirensky Institute of Physics FRC KSC SB RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zhilova, O. V.; Pankov, S. Y.; Sitnikov, A. V.; Kalinin, Y. E.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Makagonov, V. A.
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16.

Belyaev, B. A.
Scattering of Electromagnetic Waves on a Subwave Lattice of Square Strip Conductors / B. A. Belyaev, V. Tyurnev, N. V. Volkov // J. Commun. Technol. Electron. - 2019. - Vol. 64, Is. 7. - P. 664-674, DOI 10.1134/S1064226919070039. - Cited References: 24. - The study was supported by the Ministry of Education and Science of the Russian Federation (agreement no. 14.575.21.0279, unique project identifier RFMEFI57517X0142). . - ISSN 1064-2269. - ISSN 1555-6557

РУБ Engineering, Electrical & Electronic + Telecommunications
Рубрики:
MULTILAYER BANDPASS FILTER
   DIELECTRIC LAYERS
   DESIGN
   MESH
Аннотация: Simple formulas are obtained for calculating the scattering matrix of a plane electromagnetic wave incident normally on an infinite 2D lattice formed by square strip conductors and located at the interface of two dielectric media. For the first time, the vortex behavior of the electric field of the lattice was taken into account, which made it possible to repeatedly reduce the computation error at high frequencies. This is confirmed by the close agreement of the amplitude-frequency responses of the structure calculated by the formulas with the characteristics obtained by the numerical electrodynamic analysis of the 3D model when the lattice period is less than half the wavelength.

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Публикация на русском языке Беляев, Борис Афанасьевич. Рассеяние электромагнитных волн на субволновой решетке квадратных полосковых проводников [Текст] / Б. А. Беляев, В. В. Тюрнев, В. Е. Волков // Радиотехн. и электроника. - 2019. - Т. 64 № 7. - С. 666-677

Держатели документа:
Russian Acad Sci, Siberian Branch, KSC Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Volkov, N. V.; Волков, Никита Валентинович; Беляев, Борис Афанасьевич; Ministry of Education and Science of the Russian Federation [14.575.21.0279, RFMEFI57517X0142]
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17.

Accidental bound state in the continuum in a chain of dielectric disks / M. S. Sidorenko, O. N. Sergaeva, Z. F. Sadrieva [et al.] // 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference : IEEE, 2021. - Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (Jun 21-25, 2021, Electr. Network), DOI 10.1109/CLEO/Europe-EQEC52157.2021.9592618. - Cited References: 2. - The work was supported by RFBR (19-02-00419), the grant of the President of the Russian Federation (MK2224.2020.2) and the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS . - ISBN 978-1-6654-1876-8

РУБ Engineering, Electrical & Electronic + Quantum Science & Technology + Optics + Physics, Applied

Аннотация: Dielectric resonators are open systems whose eigenmodes couple to the radiation continuum resulting in nonzero radiation losses. For a long time, it was believed that only guided modes with frequencies below the light line were decoupled from the radiation continuum [1] . In the early 2000’s, several counterexamples of perfectly localized states – i.e. totally decoupled from the radiation continuum – at frequencies above the light line were proposed in dielectric gratings and photonic crystal waveguides [2] . Such states are known as bound states in the continuum (BIC).

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ITMO Univ, Dept Phys & Engn, St Petersburg 197101, Russia.
MIT, Elect Res Lab, 50 Vassar St, Cambridge, MA 02139 USA.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Sidorenko, M. S.; Sergaeva, O. N.; Sadrieva, Z. F.; Roques-Carmes, C.; Muraev, P. S.; Мураев, Павел Сергеевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Bogdanov, A. A.; RFBRRussian Foundation for Basic Research (RFBR) [19-02-00419]; Russian FederationRussian Federation [MK2224.2020.2]; Foundation for the Advancement of Theoretical Physics and Mathematics BASIS; Conference on Lasers and Electro-Optics Europe; European Quantum Electronics Conference(2021 ; June)
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18.

Muzalevsky, K. V.
Synthesis of an ultra-wideband pulse by a log-periodic antenna with continuous excitation by harmonic oscillations / K. V. Muzalevsky // Radiophys. Quantum Electron. - 2023. - Vol. 65, Is. 8. - P. 615-623, DOI 10.1007/s11141-023-10242-2. - Cited References: 38. - This work was supported by the Russian Science Foundation and the Krasnoyarsk Regional Science Foundation (project No. 22–17–20042) . - ISSN 0033-8443. - ISSN 1573-9120
Аннотация: We propose a method for synthesizing ultra-wideband pulses using a vector network analyzer and a wideband transceiving log-periodic antenna. The transfer characteristic of the antenna-feeder transmission line of the system is described by the model of a two-port network whose S-matrix elements are calibrated for at least two heights of the antenna above the reflecting surface (metal plate). The proposed method of calibrating the transfer characteristic of a log-periodic antenna allows one to minimize the amplitude- and phase-frequency distortions, which are introduced to the sensing pulse by the antenna. Employing the developed method, we experimentally demonstrate a possibility of synthesizing an ultra-wideband pulse with a duration of 0.46 ns at the level of half amplitude of the envelope (when the pulse contains several field oscillations) using a log-periodic antenna with a passband of 1.36 to 4.88 GHz (at the level −10 dB). This method is specially developed for creating miniature radar systems using portable vector network analyzers and log-periodic antennas for applications to remote sensing of an underlying surface by ultra-wideband pulses from small-size unmanned aerial vehicles.

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Публикация на русском языке Музалевский, Константин Викторович. Синтезирование сверхширокополосного импульса логопериодической антенной с непрерывным возбуждением гармоническими колебаниями [Текст] / К. В. Музалевский // Изв. вузов. Радиофиз. - 2022. - Т. 65 № 8. - С. 677-686

Держатели документа:
L. V. Kirenskii Institute of Physics of Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Музалевский, Константин Викторович
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19.

Muzalevsky, K. V.
Reflecting properties of the seasonally thawed layer during thawing and freezing of the light loam soil. Numeric-analytical study / K. V. Muzalevsky // Radiophys. Quantum Electron. - 2023. - Vol. 65, Is. 9. - P. 698-709, DOI 10.1007/s11141-023-10250-2. - Cited References: 52 . - ISSN 0033-8443. - ISSN 1573-9120
Аннотация: We use numeric-analytical methods to study theoretically the reflective properties of the layered media of the seasonally thawed active layer (AL) in the process of their freezing and thawing in the ultrawide frequency band from 10 MHz to 10 GHz, as well as the process of interaction of 2.5-ns ultrawide band pulses in the megahertz frequency range with such media, for the light loam soil with the clay-fraction weight content equal to 20% as an example. The spectral amplitudes of the reflection coefficient, the time waveforms and delays, and the propagation velocity of the pulse are calculated in the case of a monostatic radar configuration with probing the AL to the nadir by an electromagnetic wave with a plane front. It is shown that the AL soil is a low-pass filter for the reflected waves, and the cutoff frequency of this filter decreases nonlinearly with increasing AL thickness. In this case, the average frequency in the spectrum of the probing pulse decreases from 527 MHz (before the pulse enters the medium) by 38% and 23% per meter during propagation through the thawed and frozen active layers, respectively. The velocity of the ultrawideband pulse and the group velocity of the pulse propagation, which is calculated at the average frequency of the probing-pulse spectrum before the pulse enters the medium, coincide in both the thawed and frozen ALs of the light loam soil. It is shown that the energy potential of the radar system should exceed 40 dB per 0.5 m of the AL thickness in the frequency range below 1 GHz to ensure probing of the lower boundary of the AL in the freezing or thawing light loam soil. The performed studies demonstrate the basic possibility and good prospects for developing pulsed ultrawideband radar systems in the megahertz frequency range for remote probing of the geophysical parameters of the layered structure of ALs in light loam soils.

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Публикация на русском языке Музалевский, Константин Викторович. Отражающие свойства сезонно-талого слоя в процессе оттаивания и замерзания легкосуглинистой почвы. Численно-аналитическое исследование [Текст] / К. В. Музалевский // Изв. вузов. Радиофизика. - 2022. - Т. 65 № 9. - С. 768-780

Держатели документа:
L. V. Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Музалевский, Константин Викторович
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20.

Effect of the electrical inhomogeneity on the magnetocapacitance sign change in the HoxMn1−xS semiconductors upon temperature and frequency variation / S. S. Aplesnin, M. N. Sitnikov, A. M. Kharkov, H. Abdelbaki // J. Mater. Sci.: Mater. Electron. - 2023. - Vol. 34, Is. 4. - Ст. 284, DOI 10.1007/s10854-022-09731-3. - Cited References: 32. - Council on grants of the President of the Russian Federation, MK-620.2021.1.2, Maksim Sitnikov . - ISSN 1573-482X
Аннотация: The dielectric properties of the HoxMn1−xS (x ≤ 0.1) semiconductors in the frequency range of 100 ˂ ω ˂ 106 Hz at temperatures of 80−550 K have been studied. The temperature crossover from the Debye behavior of the permittivity to the resonance behavior has been found at low holmium concentrations in the compounds. The frequency of the crossover from the migration to dipole orientation polarization with the minimum dielectric loss has been determined. The positive and negative magnetocapacitances for two concentrations of holmium ions have been found. The temperature and frequency ranges of the magnetocapacitance sign change have been established and this phenomenon has been explained using the model of the transition from electrically inhomogeneous to homogeneous states.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia
Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Krasnoyarsk, Russia

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Kharkov, A. M.; Abdelbaki, H.
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