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Growth of α-FeSi2 nanocrystals on silicon surface: the impact of gold and the Si/Fe flux ratio, the origin and the prediction of α/Si orientation relationships and interface structures / Ivan Tarasov, Maxim Visotin, Sergey Varnakov and Sergey Ovchinnikov // 1st FunMAX Workshop 2020 : Book of Abstracts. - 2020. - P. 11. - Cited References: 2. - The study was carried out with the financial support of the Government of the Russian Federation within the framework of a grant for the creation of world-class laboratories (Agreement No. 075-15-2019-1886).

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Держатели документа:
Kirensky Institute of Physics

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Visotin, M. A.; Высотин, Максим Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; International Online Workshop on the properties of Functional MAX-materials(1 ; 2020 ; Aug ; 10-12 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
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Magnetic Properties of Fe–Cu–Nb–Si–B Spinning Ribbons / D. V. Balatskiy, G. S. Kraynova, V. S. Plotnikov [et al.] // Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 9. - P. 1126-1130, DOI 10.3103/S1062873820090063. - Cited References: 7 . - ISSN 1062-8738
Кл.слова (ненормированные):
Amorphous alloys -- Copper compounds -- Iron compounds -- Nanocrystals -- Niobium compounds -- Saturation magnetization -- Silicon -- Silicon compounds -- Structural relaxation
Аннотация: Dependences of relative saturation magnetization on temperature are measured for amorphous nanocrystalline ribbons of Finemet-type FeCu1Nb3Si13.5B8, FeCu1Nb3Si13B6, and FeCu1Nb3Si13B13 compositions. The character of the structural relaxation of amorphous alloys is established by means of Mossbauer spectroscopy, and the main magnetic characteristics are determined. It is found that the structural relaxation of amorphous ribbon proceeds in several stages upon annealing.

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Публикация на русском языке Магнитные свойства спиннингованных лент Fe–Cu–Nb–Si–B [Текст] / Д. В. Балацкий, Г. С. Крайнова, В. С. Плотников [и др.] // Изв. РАН. Сер. физич. - 2020. - Т. 84 № 9. - С. 1320-1324

Держатели документа:
Far Eastern Federal University, Vladivostok, 690950, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Balatskiy, D. V.; Kraynova, G. S.; Plotnikov, V. S.; Ilin, N. V.; Tkachev, V. V.; Knyazev, Yu. V.; Князев, Юрий Владимирович
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Microstructure and magnetic properties of Co58Ni10Fe5B16Si11 and Co58Ni10Fe5B16Si11-Al2O3 bulk amorphous coatings prepared by plasma spraying / E. A. Denisova, I. V. Nemtsev, S. V. Telegin [et al.] // J. Phys.: Conf. Ser. - 2020. - Vol. 1582, Is. 1. - Ст. 012078DOI 10.1088/1742-6596/1582/1/012078. - Cited References: 18. - This work was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 18-42-240006 Nanomaterials with magnetic properties determined by the topological features of the nanostructure). The authors thank the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” for the provided equipment
Кл.слова (ненормированные):
Alumina -- Aluminum oxide -- Cobalt alloys -- Composite coatings -- Deposits -- Glass -- Heat treatment -- Industrial research -- Iron alloys -- Magnetic properties -- Magnetism -- Microstructure -- Nanocrystalline materials -- Nanocrystals -- Plasma jets -- Plasma spraying -- Silicon -- Silicon alloys
Аннотация: The bulk soft magnetic glassy Co58Ni10Fe5B16Si11 alloy specimens have been prepared by plasma spray deposition. In order to increase resistivity of the material, the bulk Co58Ni10Fe5B16Si11-Al2O3 composite materials were fabricated. The investigations of structure and magnetic properties of the bulk samples were carried out by X-ray diffraction, electron microscopy and magnetic measurements. The relation of the structural features and magnetic characteristics of the bulk coating to the main parameters of the deposition regimes was determined. Optimized plasma spray deposition parameters allowed obtaining bulk glassy samples with magnetic parameters that are not inferior to the characteristics of a thermally treated rapidly quenched ribbon with the same composition. It was found that the bulk amorphous coatings can be characterized as a heterophase system. The relaxation annealing of the Co58Ni10Fe5B16Si11 bulk coating leads to a phase transition in this alloy in the precrystallization temperature range. The magnetic properties of the both kinds of coatings are correlated with changes in the microstructure. The appearance of nanocrystalline phase with TC640 K during relaxation heat treatment leads to a decrease of the coercivity and to an increase of the permeability. A comparison between the magnetic properties of the CoNiFe-BSi coating and (CoNiFe-BSi)-Al2O3, composite coating is carried out.

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Держатели документа:
Kirensky Institute of Physics, Sb Russian Academy of Sciences, 50/38, Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 73 Svobodny ave., Krasnoyarsk, 660041, Russian Federation
Scientific Center, Federal Research Center Ksc Sb Ras, 50 Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy ave., Krasnoyarsk, 660037, Russian Federation
Krasnoyarsk Institute of Railways Transport, Novaja Zarja str., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Nemtsev, I. V.; Telegin, S. V.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikova, L. A.; Shepeta, N. A.; International Conference on High-Tech and Innovations in Research and Manufacturing(2020 ; 28 Feb. ; Krasnoyarsk)
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Modification of optical and magneto-optical response of highly textured Au3Fe1-x/Fe Janus-like nanocrystals grown on amorphous silicon dioxide surface / I. A. Tarasov, T. E. Smolyarova, I. A. Yakovlev [et al.] ; чл. орг. ком.: M. Farle [et al.] ; секр. орг. ком. T. E. Smolyarova // International workshop on functional MAX-materials (1st FunMax). - 2020. - P. 22. - The study was carried out with the financial support of the Government of the Russian Federation within the framework of a grant for the creation of world-class laboratories (Agreement No. 075-15-2019-1886)

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Smolyarova, T. E.; Смолярова, Татьяна Евгеньевна; Yakovlev, I. A.; Яковлев, Иван Александрович; Nemtsev, I. V.; Немцев, Иван Васильевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Farle, M. \чл. орг. ком.\; Tarasov, A. S. \чл. орг. ком.\; Тарасов, Антон Сергеевич; Ovchinnikov, S. G. \чл. орг. ком.\; Smolyarova, T. E. \секр. орг. ком.\; International workshop on functional MAX-materials(1 ; 2020 ; Aug. 10-12 ; Krasnoyarsk (on-line)); Kirensky Institute of Physics
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Growth of α-FeSi2 nanocrystals on silicon surface: the impact of gold and the Si/Fe flux ratio, the origin and the prediction of α/Si orientation relationships and interface structures / I. A. Tarasov, M. A. Visotin, S. N. Varnakov [et al.] ; чл. орг. ком.: M. Farle [et al.] ; секр. орг. ком. T. E. Smolyarova // International workshop on functional MAX-materials (1st FunMax). - 2020. - P. 11. - Cited references: 2. - The study was carried out with the financial support of the Government of the Russian Federation within the framework of a grant for the creation of world-class laboratories (Agreement No. 075-15-2019-1886)

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Visotin, M. A.; Высотин, Максим Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Farle, M.; Farle, M. \чл. орг. ком.\; Tarasov, A. S. \чл. орг. ком.\; Тарасов, Антон Сергеевич; Ovchinnikov, S. G. \чл. орг. ком.\; Smolyarova, T. E. \секр. орг. ком.\; Смолярова, Татьяна Евгеньевна; International workshop on functional MAX-materials(1 ; 2020 ; Aug. 10-12 ; Krasnoyarsk (on-line)); Kirensky Institute of Physics
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Modification of optical and magneto-optical response of highly textured Au3Fe1-x/Fe Janus-like nanocrystals grown on amorphous silicon dioxide surface [Text] / Ivan Tarasov, Tatyana Smolyarova, Ivan Yakovlev, Ivan Nemtsev, Sergey Varnakov and Sergey Ovchinnikov // 1st FunMAX Workshop 2020 : Book of Abstracts. - 2020. - P. 22. - The study was carried out with the financial support of the Government of the Russian Federation within the framework of a grant for the creation of world-class laboratories (Agreement No. 075-15-2019-1886).

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Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Smolyarova, T. E.; Смолярова, Татьяна Евгеньевна; Yakovlev, I. A.; Яковлев, Иван Александрович; Nemtsev, I. V.; Немцев, Иван Васильевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; International Online Workshop on the properties of Functional MAX-materials(1 ; 2020 ; Aug ; 10-12 ; Krasnoyarsk); Kirensky Institute of Physics; Институт физики им. Л.В. Киренского Сибирского отделения РАН
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    Magnetic circular dichroism in the canted antiferromagnet α-Fe2O3: bulk single crystal and nanocrystals / R. Ivantsov [et al.] // J. Magn. Magn. Mater. - 2020. - Vol. 498. - Ст. 166208, DOI 10.1016/j.jmmm.2019.166208. - Cited References: 60. - The authors thank S.L. Sukhachev for help in conducting absorption experiments and S.G. Ovchinnikov for fruitful discussions. The work is supported by Russian Academy of Sciences in the frame of the Project № 0356-2017-0030. . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Круговой магнитный дихроизм в антиферромагнетике α-Fe2O3: объемный монокристалл и нанокристаллы
Кл.слова (ненормированные):
Hematite -- α-Fe2O3 -- optical absorption -- magnetic circular dichroism -- ellipsometric parameters -- Raman scattering -- one-ion d-d transitions -- pare exciton-magnon transitions
Аннотация: Hematite, α-Fe2O3, is a canted antiferromagnet with the Neel temperature of 960 K. The Morin transition, which occurs when the temperature is lowered to ∼260 K, when the magnetic moments of the sublattices become strictly antiparallel to each other and the resulting magnetic moment disappears, is a characteristic feature of this compound. Detailed investigations are presented here of the magneto-optical effects in the α-Fe2O3 nanoparticles in the transmitted light and in the α-Fe2O3 single crystal in the reflected light. Two types of magneto-optic features were revealed in the magnetic circular dichroism (MCD) spectrum. Some of them described by the Gauss line shape were associated with one-ion d-d transitions. Others were described by the S-shaped line with the inflection points corresponding to the absorption maxima. Last features were assigned to the pair exciton-magnon transitions. An exceptionally strong S-shaped line at 2.0-2.5 eV appeared to be a unique feature of α-Fe2O3 distinguishing it from other iron oxide compounds. The origin of the high effectiveness of the pair exciton-magnon interaction giving rise to this strong S-shaped feature in the MCD spectrum of α-Fe2O3 is discussed.

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

Доп.точки доступа:
Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Ivanova, O. S.; Иванова, Оксана Станиславовна; Zharkov, S. M.; Жарков, Сергей Михайлович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Edelman, I. S.; Эдельман, Ирина Самсоновна
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Magnetite Nanocrystals with a High Magnetic Anisotropy Constant due to the Particle Shape / S. V. Stolyar [et al.] // Tech. Phys. Lett. - 2019. - Vol. 45, Is. 9. - P. 878-881, DOI 10.1134/S1063785019090116. - Cited References: 20. - This study was supported in part by the Russian Foundation for Basic Research, Government of Krasnoyarsk Krai, Science Foundation of Krasnoyarsk Krai within research projects nos. 18-42-240006 (“Nanomaterials with Magnetic Properties Determined by the Nanostructure Topological Features”) and 18-43-243003 (“Sonochemical Treatment of Magnetic Nanoparticles As a Way of Modifying Their Properties”) and a special program of the Ministry of Education and Science of the Russian Federation for Siberian Federal University. . - ISSN 1063-7850
Кл.слова (ненормированные):
magnetite -- nanoparticles -- magnetic anisotropy -- polysaccharide
Аннотация: Chemical solution deposition in the presence of arabinogalactan makes it possible to prepare magnetite nanocrystals in the form of square plates with a high aspect ratio (~1/9). The magnetic anisotropy constant of particles is several times higher than that of spherical magnetite particles, which enhances the hysteretic properties with a small particle volume retained.

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Публикация на русском языке

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Subdivision of Federal Krasnoyarsk Science Center,Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Federal Research Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
B.B. Gorodovikov Kalmyk State University, Elista, 358000, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Cheremiskina, E. V.; Bairmani, M. S.; Eroshenko, P. E.; Ерошенко, П. Е.; Iskhakov, R. S.; Исхаков, Рауф Садыкович
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    Role of Halogen Atoms on High-Efficiency Mn2+ Emission in Two-Dimensional Hybrid Perovskites / G. J. Zhou [et al.] // J. Phys. Chem. Lett. - 2019. - Vol. 10, Is. 16. - P. 4706-4712, DOI 10.1021/acs.jpclett.9b01996. - Cited References: 37. - This work is supported by the National Natural Science Foundation of China (No. 51722202 and 51572023), the Natural Science Foundations of Beijing (2172036), the Fundamental Research Funds for the Central Universities (FRF-TP-18-002C1), and the Guangdong Provincial Science & Technology Project (No. 2018A050506004). . - ISSN 1948-7185
   Перевод заглавия: Роль атомов галогенов в высокоэффективном излучении Mn2 + в двумерном гибридном перовските

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Atomic, Molecular & Chemical
Рубрики:
ENERGY-TRANSFER
   LIGHT-EMISSION
   DOPING MN2+
   LEAD-FREE
   NANOCRYSTALS
Аннотация: Doped halide pervoskites as highly efficient light emitters have recently fascinated the research community, while the influence of halogen atoms X (X = Cl, Br, I) on the hybrid energy levels and photoluminescence properties remains a challenge. Here, the role of X compositions in the two-dimensional hybrid perovskite BA2PbX4 (BA = C4H9NH3) on the doped Mn2+ emission is identified, wherein Mn2+ reveals a strong luminescence dependence on the nature of the halogen, and optimum Mn2+ emission with a record quantum yield of 60.1% has been achieved in BA2PbBr4. Density functional theory calculations show that BA2PbBr4 holds low Br vacancy concentration and unique coupled states of the Mn-3d level and Pb-6p level at the conduction band minimum, leading to efficient energy transfer from the host to Mn2+. Our work sheds new light on the methods to realize strong exciton–dopant exchange coupling for achieving high-efficiency dopant luminescence.

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Держатели документа:
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Municipal Key Lab New Energy Mat & Techno, Beijing 100083, Peoples R China.
Beihang Univ, Sch Phys, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China.
South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Guangdong, Peoples R China.

Доп.точки доступа:
Zhou, Guojun; Jia, Xiaofang; Guo, Shaoqiang; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhang, Junying; Xia, Zhiguo
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10.

Incorporating rare-earth terbium(III) ions into Cs2AgInCl6:Bi nanocrystals toward tunable photoluminescence / Y. Liu, X. M. Rong, M. Z. Li [et al.] // Angew. Chem. - 2020. - Vol. 132, Is. 28. - P. 11731-11737, DOI 10.1002/ange.202004562. - Cited References: 43 . - ISSN 1521-3757

РУБ Chemistry, Multidisciplinary
Рубрики:
HALIDE DOUBLE PEROVSKITE
   LEAD-FREE
   LANTHANIDE
   STABILITY
   EMISSION
Кл.слова (ненормированные):
doping -- energy transfer -- perovskite nanocrystals -- photoluminescence -- terbium
Аннотация: The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−xTbx)Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Держатели документа:
Univ Sci, Sch Materials Sciences, Beijing Municipal Key Lab New Energy Materials, Technology Beijing,Technologies,Engn, Beijing, P. R. China.
Shenzhen Univ, Coll Materials Sci, Guangdong Res Ctr Interfacial Engn Functional Mat, Shenzhen Key Lab Special Functional Materials, Shenzhen, P. R. China.
Kirensky Inst Phys, Fed Res Ctr KSC SB RASs, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys, Radioelectronics, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
S China Univ Technology, Sch Materials Sci, State Key Lab Luminescent Materials, Guangdong Prov Key Lab Fiber Laser Materials, Guangzhou, P. R. China.

Доп.точки доступа:
Liu, Ying; Rong, Ximing; Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
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