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Admittance spectroscopy of dopants implanted in silicon and impurity state-induced AC magnetoresistance effect / D. A. Smolyakov, A. S. Tarasov, M. A. Bondarev [et al.] // Mater. Sci. Semicond. Process. - 2021. - Vol. 126. - Ст. 105663, DOI 10.1016/j.mssp.2021.105663. - Cited References: 21. - This study was supported by the Government of the Russian Federation , Mega Grant for the Creation of Competitive World-Class Laboratories (Agreement no. 075-15-2019-1886) . - ISSN 1369-8001
Кл.слова (ненормированные):
Semiconductors -- Magnetoimpedance -- Impurities -- Implantation
Аннотация: A silicon structure doped with Ga using ion implantation has been investigated by admittance spectroscopy. It has been established that the presence of the Ga impurity, along with the B one, in the silicon structure leads to the appearance of the second peak in the temperature dependence of the real part of the impedance (admittance). Moreover, switching-on a magnetic field parallel to the sample plane shifts the singularities in the temperature curve to the high-temperature region. This results in the manifestation of both the positive and negative magnetoresistance effect upon temperature and magnetic field variation. It has been found by the standard admittance spectroscopy analysis of the impedance data that the energy structure of the investigated sample includes two interfacial energy levels ES1(0) = 42 meV and ES2(0) = 69.4 meV. As expected, these energies are consistent with the energies of B and Ga dopants. In a magnetic field, these levels increase by 3 meV for B and 2 meV for Ga, which induces the magnetoresistance effect. It has been demonstrated that the interfacial state-induced magnetoresistance effect can be tuned by ion implantation and dopant selection.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences660036, Russian Federation
Lobachevsky State University, Nizhny Novgorod603950, Russian Federation

Доп.точки доступа:
Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Bondarev, M. A.; Бондарев, Михаил Александрович; Nikolskaya, A. A.; Vasiliev, V. K.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Volkov, N. V.; Волков, Никита Валентинович
}
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Berggren, K. F.
Crossover from regular to irregular behavior in current flow through open billiards / K. F. Berggren, A. F. Sadreev, A. A. Starikov // Phys. Rev. E. - 2002. - Vol. 66, Is. 1. - Ст. 16218, DOI 10.1103/PhysRevE.66.016218. - Cited References: 36 . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
PHASE SINGULARITIES
   NODAL POINTS
   WAVE-FIELDS
   QUANTUM
   STREAMLINES
   CONDUCTANCE
   VORTICES
   CHAOS
Кл.слова (ненормированные):
Eigenvalues and eigenfunctions -- Mathematical models -- Networks (circuits) -- Random processes -- Resonance -- Signal processing -- Spurious signal noise -- Bursting time series -- Coherence resonance -- Power spectrum -- Stochastic resonance -- Chaos theory
Аннотация: We discuss signatures of quantum chaos in terms of distributions of nodal points, saddle points, and streamlines for coherent electron transport through two-dimensional billiards, which are either nominally integrable or chaotic. As typical examples of the two cases we select rectangular and Sinai billiards. We have numerically evaluted distribution functions for nearest distances between nodal points and found that there is a generic form for open chaotic billiards through which a net current is passed. We have also evaluated the distribution functions for nodal points with specific vorticity (winding number) as well as for saddle points. The distributions may be used as signatures of quantum chaos in open systems. All distributions are well reproduced using random complex linear combinations of nearly monochromatic states in nominally closed billiards. In the case of rectangular billiards with simple sharp-cornered leads the distributions have characteristic features related to order among the nodal points. A flaring or rounding of the contact regions may, however, induce a crossover to nodal point distributions and current flow typical for quantum chaos. For an irregular arrangement of nodal points, as for example in the Sinai billiard, the quantum flow lines become very complex and volatile, recalling chaos among classical trajectories. Similarities with percolation are pointed out.

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Держатели документа:
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Dept. of Phys. and Msrmt. Technology, Linkoping University, S-581 83 Linkoping, Sweden
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Starikov, A. A.
}
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Characterization and magnetic properties study for magnetite nanoparticles obtained by pulsed laser ablation in water / V. A. Svetlichnyi [et al.] // Appl. Phys. A. - 2017. - Vol. 123, Is. 12. - Ст. 763, DOI 10.1007/s00339-017-1390-7. - Cited References: 40. - This work was conducted as a government task of the Ministry of Education and Science of the Russian Federation, Project Number 3.9604.2017/8.9. . - ISSN 0947-8396
Кл.слова (ненормированные):
Magnetite -- Pulsed laser ablation -- Nanoparticles -- Dispersion
Аннотация: Magnetite (Fe3O4) nanoparticles of 1–10 nm (with the maximum at 2 nm) were obtained via pulsed laser ablation of iron target in water in form of a stable dispersion without addition of surfactants and stabilizers. The structure of the material obtained was investigated using transmission electron microscopy, scanning electron microscopy, and Brunauer–Emmett–Teller methods. To investigate the composition of the particles in the sample, such methods as Fourier transform infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, and X-ray diffraction, were applied. Magnetite phase was found to be sufficiently pure, it was not contaminated by other iron oxide phases and contained not more than 0.5% of metallic iron in form of large particles. The study of the magnetic properties of the magnetite nanoparticles obtained has shown that they exhibit ferrimagnetic behavior at room temperature with the paramagnetic contribution explained by the presence of fine superparamagnetic particles.

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Держатели документа:
Tomsk State University, Lenina ave., 36, Tomsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50, bld. 38, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Svetlichnyi, V. A.; Shabalina, A. V.; Lapin, I. N.; Goncharova, D. A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович
}
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Composite polymer granules based on poly-ε-caprolactone and montmorillonite prepared by solution-casting and melt extrusion / A. Sukhanova, A. Boyandin, N. Ertiletskaya [et al.] // Polymers. - 2023. - Vol. 15, Is. 20. - Ст. 4099, DOI 10.3390/polym15204099. - Cited References: 45. - This research was supported by a grant from the Russian Science Foundation, project No. 23-16-00184 . - ISSN 2073-4360
Кл.слова (ненормированные):
biodegradable polymers -- poly-ε-caprolactone -- montmorillonite -- polymer composites -- processing technologies
Аннотация: Eco-friendly polymer composites in the form of granules based on biodegradable polycaprolactone (PCL) with the inclusion of montmorillonite (MMT) from 5 to 50 wt% were prepared by solution-casting and melt extrusion. The physicochemical properties of the composite granules were studied using FTIR spectroscopy, XRDA, DSC, and TGA methods. The paper presents comparative values of crystallinity of composite granules which depend on the method of measuring (XRDA, DSC). It was shown that the crystallinity of PCL/MMT granules was affected by the preparation method and by the MMT content, and that with increase in MMT content, crystallinity increased by up to 61–67%. The change in crystallinity of the granules also affected its biodegradation in soil. At the end of exposure in soil, the mass loss for the granules prepared by solution-casting was more than 90%, whereas for the composite granules prepared by extrusion it was less than 60%. Applying melt extrusion enabled obtaining intercalated composites with predictable features, whereas only mixed-structure microcomposites could be prepared by solution-casting.

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Держатели документа:
Department of Biodegradable Polymers Materials, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarskiy Rabochiy Av., Krasnoyarsk 660037, Russia
Department of Analysis, Synthesis, Modeling and Digital Design of Smart Materials with Specified Properties, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarskiy Rabochiy Av., Krasnoyarsk 660037, Russia
Department of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, Krasnoyarsk 660036, Russia
Department Engineering Physics and Radio Electronics, Siberian Federal University, 79 Svobodny Av., Krasnoyarsk 660041, Russia
Department of Digital Design of Transformable Structures based on Smart Materials, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarskiy Rabochiy Av., Krasnoyarsk 660037, Russia
Department of Scientific Activities, Science and Technology, Siberian Federal University, 79 Svobodny Av., Krasnoyarsk 660041, Russia
Department of Intelligent Materials and Systems, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarskiy Rabochiy Av., Krasnoyarsk 660037, Russia

Доп.точки доступа:
Sukhanova, Anna; Boyandin, Anatoly; Ertiletskaya, Natalya; Shalygina, Taisia; Shabanov, A. V.; Шабанов, Александр Васильевич; Vasiliev, Alexander; Obvertkin, Ivan; Brott, Valeria; Prokopchuk, Yulia; Samoilo, Alexander
}
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Correction: Volova et al. Laser processing of polymer films fabricated from PHAs differing in their monomer composition. Polymers 2021, 13, 1553 / T. G. Volova, A. I. Golubev, I. V. Nemtsev [et al.] // Polymers. - 2024. - Vol. 16, Is. 8. - Ст. 1075, DOI 10.3390/polym16081075. - Cited References: 1 . - ISSN 2073-4360

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Держатели документа:
Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia
Special Design and Technological Bureau ‘Nauka’ Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/45 Akademgorodok, 660036 Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences” 50 Akademgorodok, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Volova, T. G.; Golubev, A. I.; Голубев, Алексей И.; Nemtsev, I. V.; Немцев, Иван Васильевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Dudaev, A. E.; Shishatskaya, E. I.
}
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Data processing algorithms for magneto-optical ellipsometry of thin films with optical uniaxial anisotropy / O. A. Maximova, S. A. Lyashchenko, I. A. Yakovlev [et al.] // V International Baltic Conference on Magnetism. IBCM : Book of abstracts. - 2023. - P. 126. - Cited References: 5. - РНФ № 21-12-00226

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS
Siberian Federal University

Доп.точки доступа:
Maximova, O. A.; Максимова, Ольга Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Yakovlev, I. A.; Яковлев, Иван Александрович; Shvetsov, D. V.; Andryushchenko, T. A.; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; International Baltic Conference on Magnetism(5 ; 2023 ; Aug. 20-24 ; Svetlogorsk, Russia); Балтийский федеральный университет им. И. Канта
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Determination of the pore direction in a crystalline metal-organic framework by Raman spectroscopy and periodic calculations based on the electron density functional theory / N. V. Slyusarenko, I. D. Yushina, E. A. Slyusareva [et al.] // Optoelectron. Instrum. Data Process. - 2023. - Vol. 59, Is. 6. - P. 693-702, DOI 10.3103/S8756699023060134. - Cited References: 32. - This work was supported by the Russian Foundation for Basic Research (Russian Center of Scientific Information), project no. 21-52-12018. - We are grateful to Dr. Irena Senkovska for the presented DUT-8 (Ni, Co) samples . - ISSN 8756-6990. - ISSN 1934-7944
Кл.слова (ненормированные):
Raman light scattering -- metal-organic framework -- pore orientation -- electron density functional theory
Аннотация: A method for the determination of pore orientation in metal-organic framework structures by polarized Raman spectra is proposed. The method involves sensitivity of the line intensity of Raman scattering to the geometry of propagation in a crystal. The operability of the method is shown by DUT-8 (Ni, Co) crystals. The obtained results are interpreted based on analysis of symmetry and direction of vibrations within periodic calculations of the electron density functional theory. The simultaneous approach allowed us to describe the vibrations and to find the principal crystal orientation collinear to the pore direction. The information on the pore orientation is necessary for problems of adsorption and design of complex multicomponent materials based on metal-organic framework.

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Публикация на русском языке Определение направления пор в кристаллическом металлоорганическом каркасе с помощью спектроскопии комбинационного рассеяния света и периодических расчётов, основанных на теории функционала электронной плотности [Текст] / Н. В. Слюсаренко, И. Д. Юшина, Е. А. Слюсарева [и др.]. - 11 с. // Автометрия. - 2023. - Т. 59 № 6. - С. 41-51

Держатели документа:
Siberian Federal University, 660041, Krasnoyarsk, Russia
South Ural State University, 454080, Chelyabinsk, Russia
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Slyusarenko, N. V.; Yushina, I. D.; Slyusareva, E. A.; Golovkina, E. V.; Головкина, Елена Вячеславовна; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич
}
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Development of techniques for processing data from magneto-ellipsometry measurements / O. A. Maximova [et al.] // Fourth Asian school-conference on physics and technology of nanostructured materials (ASCO-NANOMAT 2018) : proceedings / progr. com. S. G. Ovchinnikov [et al.]. - 2018. - Ст. IV.25.05p. - P. 180 . - ISBN 978-5-7444-4368-9
Аннотация: The approach to data processing for layered thin films with a ferromagnet layer is proposed for studying optical and magneto- optical properties. The scope and applicability of models which describe reflective layered structures are studied in order to recommend the best model choice for each case. A significant effect of penetration depth on this choice was observed.

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Доп.точки доступа:
Ovchinnikov, S. G. \progr. com.\; Овчинников, Сергей Геннадьевич; Maximova, O. A.; Максимова, Ольга Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Shevtsov, D. V.; Шевцов, Дмитрий Валентинович; Yakovlev, I. A.; Яковлев, Иван Александрович; Ovchinnikov, S. G.; Asian School-Conference on Physics and Technology of Nanostructured Materials(4 ; 2018 ; Sept. ; 23-28 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(4 ; 2018 ; сент. ; 23-28 ; Владивосток); Институт автоматики и процессов управления ДВО РАН; Дальневосточный федеральный университет
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    Effects of processing parameters on the morphology, structure, and magnetic properties of Cu1-xFexCr2Se4 nanoparticles synthesized with chemical methods / R. D. Ivantsov [et al.] // J. Alloys Compd. - 2015. - Vol. 650. - P. 887-895, DOI 10.1016/j.jallcom.2015.08.017. - Cited References: 36. - The paper was partially supported by the Russian Foundation for Basic Research (grant #14-02-01211), by the President of Russia (grant #NSh-2886.2014.2), and by the Ministry of Education and Science of the Russian Federation (grant #2014/71/1763 in the framework of the state assignment for the Siberian Federal University for 2014-2016). We also thank the Ministry of Science and Technology of Taiwan and the Siberian Branch of RAS (MOST 102-2112-M-153 -002 -MY3) for financial support. . - ISSN 0925-8388
   Перевод заглавия: Влияние параметров получения на морфологию, структуру и магнитные свойства наночастиц Cu1-xFexCr2Se4, синтезированных химическими методами

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
CuCr2Se4 SINGLE-CRYSTALS
   TRANSPORT-PROPERTIES
   CHROMIUM SPINELS
   NANOSTRUCTURES
   DIFFRACTION
   Li
Кл.слова (ненормированные):
Copper selenide -- Magnetic nanoparticles -- Visible magnetic circular dichroism
Аннотация: Cu1-xFexCr2Se4 nanoparticles with x = 0, 0.2, and 0.4 were synthesized via thermal decomposition of metal nitrate or chloride salts and selenium powder using different precursor compositions and processing details. Single crystalline nano-belts or nano-rods coexist in the synthesized powder samples with hexagon-shaped plates in dependence on the precursor composition. The belts gathered into conglomerates forming "hierarchical" particles. Visible magnetic circular dichroism (MCD) of Cu1-xFexCr2Se4 nanoparticles embedded into a transparent matrix was investigated for the first time. The similarity of the MCD spectra of all samples showed the similarity of the nanoparticles electronic structure independent of their morphology. Basing on the MCD spectral maxima characteristics, electron transitions from the ground to the excited states were identified with the help of the conventional band theory and the multi-electron approach. © 2015 Elsevier B.V.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
National Pingtung University, Pingtung City, Pingtung County, Taiwan

Доп.точки доступа:
Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Zharkov, S. M.; Жарков, Сергей Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Lin, C.-R.; Li, O.; Tseng, Y.-T.
}
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10.

    Enhancing coherent nonlinear-optical processes in nonmagnetic backward-wave materials / A. K. Popov [et al.] // Appl. Phys. A. - 2012. - Vol. 109, Is. 4. - P. 835-840, DOI 10.1007/s00339-012-7390-8. - Cited References: 35. - This work was supported in part by the U.S. National Science Foundation under Grant No. ECCS-1028353, by the US Air Force Office of Scientific Research under Grant No. FA9550-12-1-298; by the Presidium of the Russian Academy of Sciences under Project No. 24.31, by the Ministry of Science under Federal Research Program No. 14.V37.21.0730 and by the Siberian Division of the Russian Academy of Sciences and Siberian Federal University under Integration Project No. 101; and by the Academy of Finland and Nokia through the Center-of-Excellence program. . - ISSN 0947-8396
Рубрики:
NEGATIVE-INDEX METAMATERIALS
   LEFT-HANDED METAMATERIALS
   2ND-HARMONIC GENERATION
   PARAMETRIC AMPLIFICATION
   COMPENSATING LOSSES
   OSCILLATOR
Аннотация: Novel concepts of nonlinear-optical (NLO) photonic metamaterials (MMs) are proposed. They concern with greatly enhanced coherent NLO energy exchange between ordinary and backward waves (BWs) through the frequency-conversion processes. Two different classes of materials which support BWs are considered: crystals that support optical phonons with negative group velocity and MMs with specially engineered spatial dispersion. The possibility to replace plasmonic NLO MMs enabling magnetic response at optical frequencies, which are very challenging to engineer, by the ordinary readily available crystals, are discussed. The possibility to mimic extraordinary NLO frequency-conversion propagation processes attributed to negative-index MMs (NIMs) is shown in some of such crystals, if optical phonons with negative group velocity and a proper phase-matching geometry are implemented. Here, optical phonons are used as one of the coupled counterparts instead of backward electromagnetic waves (BEMWs). The appearance of BEMWs in metaslabs made of carbon nanotubes, the possibilities and extraordinary properties of BW second harmonic generation in such MMs is another option of nonmagnetic NIMs, which is described too. Among the applications of the proposed photonic materials is the possibility of creation of a family of unique BW photonic devices such as frequency doubling metamirror and Raman amplifiers with greatly improved efficiency.

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Доп.точки доступа:
Popov, A. K.; Shalaev, M. I.; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; Nefedov, I. S.; International conference on metamaterials, photonic crystals and plasmonics(3 ; 2012 ; 19-22 apr ; Paris, France)
}
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