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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Y. F., Grushevskii E. O., Khodenkov S. A.
Заглавие : A highly selective stripline lowpass filter with more than 100-dB wide stopband attenuation
Коллективы : Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [02G25.31.0330]
Место публикации : Tech. Phys. Lett. - 2020. - Vol. 46, Is. 4. - P.364-367. - ISSN 1063-7850, DOI 10.1134/S1063785020040173. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 8. - This study was supported in part by the Ministry of Education and Science of the Russian Federation in the framework of agreement no. 02G25.31.0330.
Аннотация: A new miniature design of a highly selective lowpass filter based on a suspended substrate with a two-sided stripline pattern has been developed. The filter frequency response slope (cutoff attenuation rate) and stopband attenuation depth are determined by transmission zeros, the number of which is equal to the filter order. An experimental prototype of a fifth-order lowpass filter on 0.5-mm-thick alumina substrate with dielectric permittivity ε = 9.8 has been synthesized with the aid of numerical electrodynamic analysis of a three-dimensional model. The cutoff frequency of the filter passband at a –1-dB level is fc = 1.75 GHz. The stopband width at a –100-dB attenuation level reaches 4.4fc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Y. F., Grushevskii E. O.
Заглавие : An ultra-wideband stripline bandpass filter with a noise suppression level of more than 100 dB
Коллективы : Ministry of Science and Higher Education of the Russian Federation [075-11-2019-078]
Место публикации : Tech. Phys. Lett. - 2020. - Vol. 46, Is. 8. - P.787-791. - ISSN 1063-7850, DOI 10.1134/S1063785020080179. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 9. - This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation in the implementation of the integrated project "Creation of a production of earth stations of advanced satellite communications systems to ensure the coherence of hard, northern and Arctic territory of Russian Federation," implemented with the participation of the Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences|" (agreement number 075-11-2019-078 dated 13.12.2019)
Аннотация: An ultra-wideband bandpass filter formed by cascading of a novel high-pass filter (HPF) and a low-pass filter (LPF) on suspended substrates with a two-sided pattern of strip conductor has been investigated. The high selectivity of the HPF is ensured by the transmission zeros near the passband, the number of which is equal to the filter order. A second-order HPF has been designed on a 0.5-mm-thick substrate with a permittivity of ε = 9.8 using the numerical electrodynamic analysis of a 3D model of the filter. The experimental HPF prototype has a cutoff frequency of fb = 0.25 GHz at a level of –3 dB and a passband that extends to 5 GHz. The ultra-wideband bandpass filter formed by cascading of the LPF and the designed HPF has a fractional bandwidth of Δf/f0 = 150% with a central frequency of f0 = 1 GHz. It has the broad and deep high-frequency stopband, which extends to a frequency of 7.8f0 at a suppression level of –100 dB.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Masyugin A. N., Sitnikov M. N., Ishibashi T.
Заглавие : Effect of a Substrate on the Magnetoelectric Effect in Rare-Earth-Doped Bismuth Iron Garnet
Место публикации : JETP Letters. - 2019. - Vol. 110, Is. 3. - P.223-230. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364019150074
Примечания : Cited References: 29. - This work was supported jointly by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Science Foundation (project no. 18-42-240001 “Temperature-Induced Reversal of the Sign of Magnetoelectric Tensor Components in Neodymium-Doped Bismuth Iron Garnet”), as well as in part by the Russian Foundation for Basic Research (project nos. 18-32-00079_mol_a and 18-52-00009_bel_a) and by the Russian Ministry of Science and Higher Education (state contract no. 3.5743.2017/6.7).
Аннотация: The mechanism of relaxation of the electric polarization in thin films of rare-earth-doped bismuth iron garnet on glass and gallium gadolinium garnet substrates is determined in magnetic fields of 0 and 12 kOe in the temperature range of 80–380 K. The change in the sign of the residual electric polarization after switching off the electric field and the magnetic-field-induced shift of the hysteresis loop in the applied magnetic field are found. Linear and quadratic magnetoelectric effects with the tensor components depending on the substrate type are observed. The linear magnetoelectric effect is related to the spin–orbit coupling of electrons at the film–substrate interface, whereas the quadratic one is determined by the exchange–striction mechanism.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Masyugin A. N., Aplesnin S. S., Sitnikov M. N., Ishibashi T.
Заглавие : Influence of the substrate on the magnetoresistance of bismuth garnet ferrite substitute by rare earth
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 1. - Ст.E.P14. - P.444-445. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4. - The reported study was funded by Krasnoyarsk Regional Fund of Science according to the participation in the event/internship: The VII Euro-Asian Symposium “Trends in Magnetism” (EASTMAG-2019)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solovev P. N., Izotov A. V., Belyaev B. A.
Заглавие : Numerical study of structural and magnetic properties of thin films obliquely deposited on rippled substrates
Коллективы : RFBRRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund; JSC 'NPP Radiosviaz' [20-42-242901]
Место публикации : J. Phys.: Condens. Matter. - 2021. - Vol. 33, Is. 49. - Ст.495802. - ISSN 0953-8984, DOI 10.1088/1361-648X/ac26fc. - ISSN 1361-648X(eISSN)
Примечания : Cited References: 35. - The reported study was funded by RFBR, the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund and JSC 'NPP Radiosviaz', Project Number 20-42-242901
Предметные рубрики: SIMULATION
ANISOTROPY
GROWTH
Аннотация: Structural modulation in thin films plays a substantial role in the formation of their magnetic properties. By producing topographic patterns in thin films, it is possible to engineer their magnetic response. Here, we report on the numerical study of the relationship between structural and static magnetic properties of thin films obliquely deposited on substrates with the sinusoidal surface. 3D Monte Carlo film growth simulations show that, under certain deposition conditions, an inhomogeneous columnar morphology can form in the films caused by the shadowing effect and the rippled substrate. Calculations of the demagnetizing tensors for these films demonstrate that their columnar structure is the source of the shape-induced uniaxial magnetic anisotropy that varies nonmonotonically with the deposition angle. Micromagnetic simulations of the generated films confirm the uniaxial character of the shape-induced anisotropy, and also show that magnetization reversal occurs via an incoherent rotation of magnetic moments.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vas'kovskiy V. O., Volochaev M. N., Gorkovenko A. N., Kravtsov E. A., Lepalovskij V. N., Feshchenko A. A.
Заглавие : Structural features and magnetic properties of Co-W films
Коллективы : Ministry of Science and Higher Education of the Russian Federation [FEUZ-2020-0051]
Место публикации : Phys. Solid State. - 2021. - Vol. 63. Is. 7. - P.1113-1119. - ISSN 1063-7834, DOI 10.1134/S1063783421070246. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 23. - This work was carried out with support by the Ministry of Science and Higher Education of the Russian Federation, topic no. FEUZ-2020-0051.
Предметные рубрики: GIANT MAGNETORESISTANCE
ANISOTROPY
Аннотация: The structure and magnetic properties of thin polycrystalline films of Co100 – xWx (0 ≤ x ≤ 30) deposited by magnetron sputtering on glass substrates are investigated including those containing buffer layers of Ta, W, and Ru. It is found that films of pure Co are non-single-phase and contain hcp and fcc crystalline modifications. Doping leads to an increase in the concentration of the fcc phase and an enhancement of the texture of the (111) type, and subsequently to the amorphization of the films. The buffer layers influence to a certain extent on the depth and concentration localization of these transformations. A characteristic feature of the magnetism of Co–W films is a significant perpendicular component in the macroscopic magnetic anisotropy, which leads to a “supercritical” magnetic state. It is shown that its source is the textured fcc phase, the crystalline anisotropy of which is enhanced as a result of doping of cobalt with tungsten.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Fadeev Y. V., Govorun I. V., Podshivalov I. V., Simunin M. M., Tambasov I. A., Karpova D. V., Smolyarova T. E., Lukyanenko A. V., Karacharov A. A., Nemtsev I. V., Khartov S. V.
Заглавие : Cu-Ag and Ni-Ag meshes based on cracked template as efficient transparent electromagnetic shielding coating with excellent mechanical performance
Коллективы : Russian Foundation for Basic Research projectRussian Foundation for Basic Research (RFBR) [18-38-00852]; Russian FederationRussian Federation [SP-2235.2019.1]
Место публикации : J. Mater. Sci. - 2021. - Vol. 56. Is. 26. - P.14741-14762. - ISSN 0022-2461, DOI 10.1007/s10853-021-06206-4. - ISSN 1573-4803(eISSN)
Примечания : Cited References: 79. - This work was supported by Russian Foundation for Basic Research project «mol_a» № 18-38-00852 and a scholarship from the President of the Russian Federation SP-2235.2019.1. The sputtering Ag seed mesh and physicochemical analysis of materials was carried out on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS»
Предметные рубрики: COPPER NANOWIRES
METALLIC MESH
PLASTIC SUBSTRATE
ELECTRODES
FILMS
Аннотация: Nowadays, the technical advances call for efficient electromagnetic interference (EMI) shielding of transparent devices which may be subject to data theft. We developed Cu–Ag and Ni–Ag meshes on flexible PET substrate for highly efficiency transparent EMI shielding coating. Cu–Ag and Ni–Ag meshes obtained with galvanic deposition of copper and nickel on thin Ag seed mesh which was made by cracked template method. Coefficients S11, S21 and shielding efficiency (SE) were measured for Cu–Ag and Ni–Ag meshes in X-band (8–12 GHz) and K-band (18–26.5 GHz). 90 s copper deposition increase SE from 23.2 to 43.7 dB at 8 GHz with a transparency of 82.2% and a sheet resistance of 0.25 Ω/sq. The achieved maximum SE was 47.6 dB for Cu–Ag mesh with 67.8% transparency and 41.1 dB for Ni–Ag mesh with 77.8% transparency. Cu–Ag and Ni–Ag meshes have high bending and long-term stability. Minimum bend radius is lower than 100 µm. This effect allows to produce different forms of transparent shielding objects, for example, origami method. Our coatings are the leading among all literary solutions in three-dimensional coordinates: of sheet resistance–optical transmittance–cost of produced.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kostyukov A. S., Ershov A. E., Bikbaev R. G., Gerasimov V. S., Rasskazov I. L., Karpov S. V., Polyutov S. P.
Заглавие : Substrate-mediated lattice Kerker effect in Al metasurfaces
Место публикации : J. Opt. Soc. Am. B. - 2021. - Vol. 38, Is. 9. - P.C78-C83. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.427939
Примечания : Cited References: 62. - Funding. Russian Foundation for Basic Research, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science (20-42-240003); Ministry of Science and Higher Education of the Russian Federation (FSRZ-2020-0008)
Аннотация: Surface lattice resonances (SLRs) emerging in regular arrays of plasmonic nanoparticles (NPs) are known to be exceptionally sensitive to the homogeneity of the environment. It is considered necessary to have a homogeneous environment for engineering narrowband SLRs, while in a half-space environment, SLRs rapidly vanish as the contrast between the refractive indices of the substrate and superstrate increases. From this conventional wisdom, it is apparent that the delicate lattice Kerker effect emerging from SLRs and resonances on constituent NPs should be difficult to achieve in a non-homogeneous environment. Using a rigorous theoretical treatment with multipolar decomposition, we surprisingly find and explain a narrowband substrate-mediated lattice Kerker effect in two-dimensional arrays of Al nanocylinders in a half-space geometry. We propose to use this effect for sensing applications and demonstrate its broad tunability across the UV/Vis wavelength range.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volochaev M. N., Tarasov I. A., Loginov Yu. Yu., Cherkov A. G., Kovalev I. V.
Заглавие : The regularities of phase formation in Fe3Si(111)/Si(111) structure at vacuum annealing
Коллективы : International Conference on Films and Coatings
Место публикации : J. Phys. Conf. Ser.: IOP, 2017. - Vol. 857, Is. 1. - Ст.012053. - ISSN 17426588 (ISSN), DOI 10.1088/1742-6596/857/1/012053
Примечания : Cited References: 10
Ключевые слова (''Своб.индексиров.''): coatings--high resolution transmission electron microscopy--molecular beam epitaxy--silicon--transmission electron microscopy--phase formations--polycrystalline--polycrystalline film--si(111) substrate--vacuum-annealing--annealing
Аннотация: The regularities of phase formation and thermal stability in Fe3Si(111)/Si(111) structure at stepped vacuum annealing (350, 450 and 550 °C) were investigated. The layer of 32 nm Fe3Si was deposited onto Si(111) substrate by molecular beam epitaxy at 260 °C. Transmission electron microscopy (TEM) measurements demonstrated that the film thickness increases by ∼19 % at 350 °C annealing without changing the phase composition. The polycrystalline -FeSi sublayer was formed on the interface at 450 °C annealing. Further annealing at 550 °C led to the ∼ 80 nm polycrystalline film formation containing the crystallites of -FeSi, Fe5Si3, and β-FeSi2 phases.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Izotov A. V., Solovev P. N., Yakovlev I. A.
Заглавие : Determination of magnetic anisotropies and miscut angles in epitaxial thin films on vicinal (111) substrate by the ferromagnetic resonance
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН , Ministry of Education and Science of the Russian Federation [3.528.2014K]
Место публикации : J. Magn. Magn. Mater.: Elsevier Science, 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P.181-184. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2016.12.081. - ISSN 1873-4766(eISSN)
Примечания : Cited References:16. - This work was supported by the Ministry of Education and Science of the Russian Federation, Task no. 3.528.2014K.
Предметные рубрики: SURFACE
SPECTROMETER
SPINTRONICS
Ключевые слова (''Своб.индексиров.''): thin film--ferromagnetic resonance--magnetic anisotropy--vicinal (111)--surface--iron silicide
Аннотация: A method for determining magnetic anisotropy parameters of a thin single-crystal film on vicinal (111) substrate as well as substrate miscut angles from angular dependence of ferromagnetic resonance field has been proposed. The method is based on the following: (i) a new approach for the solution of the system of nonlinear equations for equilibrium and resonance conditions; (ii) a new expression of the objective function for the fitting problem. The study of the iron silicide films grown on vicinal Si(111) substrates with different miscut angles confirmed the efficiency of the method. The proposed method can be easily generalized to determine parameters of single-crystal films grown on substrates with an arbitrary cut.
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