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    Морозов, Евгений Владимирович.
    Применение ЯМР томографии для исследования межфазных границ в системах коллоидного кремнезема / Е. В. Морозов, О. В. Шабанова, О. В. Фалалеев // Конденсир. среды и межфаз. границы. - 2012. - Т.14. № 1. - С. 60-69 . - ISSN 1606-867X
   Перевод заглавия: NMR imaging application for interfaces investigation in the colloid silica
Аннотация: В работе представлены результаты ЯМР томографических исследований золей коллоидного кремнезема, полученных из силикатов щелочных металлов кислотным выщелачиванием. Исследована динамика времен ядерной спин-решеточной и спин-спиновой релаксации в процессе гелеобразования, а также визуализировано пространственное распределение протекающих процессов. Рассмотрена методологическая сторона проблемы обеспечения контраста на ЯМР томограммах модельных коллоидных систем при золь-гель переходе. Экспериментально продемонстрирована актуальность разработки методологии исследования межфазных границ с помощью нового для данного направления метода.
The NMR Imaging investigation results of colloid silica obtained from alkali metals silicates by acidic leaching are presented. The dynamic of nuclear spin-lattice and spin-spin relaxation times was studied during the sol-gel transfer processes and the spatial distribution of occurred processes was visualized. The methodological direction of problem associated with contrast supply on the NMR Images was examined using model colloids samples during sol-gel transfer. It was demonstrated experimentally that the development of interfaces investigation methodology seems to be very important for advance of NMR Imaging to this field of research.

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

Доп.точки доступа:
Шабанова, О. В.; Фалалеев, Олег Владимирович; Falaleev, O.V.; Morozov, E. V.
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    Understanding the energy barriers of the reversible ion exchange process in CsPbBr1.5Cl1.5@Y2O3:Eu3+ macroporous composites and their application in anti-counterfeiting codes / M. Li, Y. Zhao, S. Zhang [et al.] // ACS Appl. Mater. Interfaces. - 2021. - Vol. 13, Is. 50. - P. 60362-60372, DOI 10.1021/acsami.1c18030. - Cited References: 49. - This work is financially jointly supported by the Guangzhou Science & Technology Project (202007020005), NSFC (Grant No. 51772104), the Fundamental Research Funds for the Central Universities (2020ZYGXZR096), Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137), and RFBR according to the research project No. 19-52-80003 . - ISSN 1944-8244
   Перевод заглавия: Понимание энергетических барьеров процесса обратимого ионного обмена в макропористых композитах CsPbBr1.5Cl1.5@Y2O3: Eu3 + и их применение в кодах защиты от подделок
Кл.слова (ненормированные):
mixed-halide CsPbX3NCs -- macroporous Y2O3:Eu3+ -- energy barriers -- photoinduced ion exchange -- anti-counterfeiting codes
Аннотация: The photoinduced reversible ion exchanges in mixed halide perovskites and the resulting luminescent variations make them promising for constructing anti-counterfeiting patterns; however, its understanding in an interfacial view is lacking. In this work, nominal CsPbBr1.5Cl1.5 (CPBC) nanocrystals (NCs) were introduced into macroporous Y2O3:Eu3+ (MYE) to realize emission color variations from red emission of MYE to green emission of halide NCs. The large surface area of MYE helps the formation of Y–Cl/Br bonds which induces fluctuation in the halide composition, while water and intrinsic halogen defects have also been proved to be essential in the reversible ion segregation process. The PL variations of several samples with different pore sizes were investigated upon irradiation of light with different photon energies and excitation power at certain temperatures. According to combined results of density functional theory calculation, the research reveals the presence of two energy barriers that would be overcome correspondingly by the excitation photon and the concentration difference in the ion exchange and recovery process. A photochromic anti-counterfeiting quick response (QR) code was constructed facilely with the perovskite composites. This work provides a deeper understanding from the interfacial aspect and also proposes a feasible strategy to realize reversible PL variation for anti-counterfeiting applications.

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State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, 510641, China
Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 680021, Russian Federation
Siberian Federal University, Krasnoyarsk, 680021, Russian Federation
Research and Development Department, Kemerovo State University, Kemerovo, 650061, Russian Federation

Доп.точки доступа:
Li, M.; Zhao, Y.; Zhang, S.; Yang, R.; Qiu, W.; Wang, P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ye, S.
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    Two-dimensional-layered perovskite ALaTa2O7:Bi3+ (A = K and Na) phosphors with versatile structures and tunable photoluminescence / G. J. Zhou [et al.] // ACS Appl. Mater. Interfaces. - 2018. - Vol. 10, Is. 29. - P. 24648-24655, DOI 10.1021/acsami.8b08129. - Cited References: 48. - The authors acknowledge the support from the National Natural Science Foundation of China (Nos. 51722202, 91622125, and 51572023) and the Natural Science Foundations of Beijing (2172036) and RFBR (17-52-53031). . - ISSN 1944-8244
   Перевод заглавия: 2D-слоистые перовскитоподобные люминофоры ALaTa2O7:Bi3+ (A = K and Na) с разнообразными структурами и управляемой люминесценцией.

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
GENERALIZED GRADIENT APPROXIMATION
YELLOW-EMITTING PHOSPHOR
Кл.слова (ненормированные):
2D-layered perovskite -- Bi3+ emission -- ion exchange -- photoluminescence tuning -- white light LEDs
Аннотация: Topological chemical reaction methods are indispensable for fabricating new materials or optimizing their functional properties, which is particularly important for two-dimensional (2D)-layered compounds with versatile structures. Herein, we demonstrate a low-temperature (∼350 °C) ion exchange approach to prefabricate metastable phosphors ALa1–xTa2O7:xBi3+ (A = K and Na) with RbLa1–xTa2O7:xBi3+ serving as precursors. The as-prepared ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) share the same Dion–Jacobson type 2D-layered perovskite phase, and photoluminescence analyses show that ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) phosphors exhibit broad emission bands peaking at 540, 550, and 510 nm, respectively, which are attributed to the nonradiative transition of Bi3+ from excited state 3P1 or 3P0 to ground state 1S0. The various Bi3+ local environments at the crystallographic sites enable the different distributions of emission and excitation spectra, and the photoluminescence tuning of ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) phosphors are realized through alkali metal ion exchange. Notably, the combination of superior trivalent bismuth emission and low-temperature ion exchange synthesis leads to a novel yellow-emitting K(La0.98Bi0.02)Ta2O7 phosphor which is successfully applied in a white LED device based on a commercially available 365 nm LED chip. Our realizable cases of this low-temperature ion exchange strategy could promote exploration into metastable phosphors with intriguing properties.

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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.
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
SB RAS, KSC, Fed Res Ctr, 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.

Доп.точки доступа:
Zhou, Guojun; Jiang, Xingxing; Zhao, Jing; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lin, Zheshuai; Liu, Quanlin; Xia, Zhiguo
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Theoretical investigation of the interfaces and mechanisms of induced spin polarization of 1D narrow zigzag graphene- and h-BN nanoribbons on a SrO-terminated LSMO(001) surface / P. Avramov [et al.] // J. Phys. Chem. A. - 2017. - Vol. 121, Is. 3. - P. 680-689, DOI 10.1021/acs.jpca.6b09696. - Cited References:74. - We acknowledge the Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk; the Joint Supercomputer Center of RAS, Moscow; and the ICC of Novosibirsk State University for providing the computing resources. P.B.S. acknowledges the financial support of the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST MISiS (No. K2-2015-033). The Russian Science Foundation (Grant No 14-13-00139) supported the work of the Russian team. The Japanese Science Foundation (JSPS KAKENHI, Grant No 16H3875) supported the work of the Japanese team. . - ISSN 1089-5639

РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
HEXAGONAL BORON-NITRIDE
AUGMENTED-WAVE METHOD
GIANT MAGNETORESISTANCE
Аннотация: The structure of the interfaces and the mechanisms of induced spin polarization of 1D infinite and finite narrow graphene- and h-BN zigzag nanoribbons placed on a SrO-terminated La1-xSrxMnO3 (LSMO) (001) surface were studied using density functional theory (DFT) electronic structure calculations. It was found that the pi-conjugated nanofragments are bonded to the LSMO(001) surface by weak disperse interactions. The types of coordination of the fragments, the strength of bonding, and the rate of spin polarization depend upon the nature of the fragments. Infinite and finite graphene narrow zigzag nanoribbons are characterized by the lift of the spin degeneracy and strong spin polarization caused by interface-induced structural asymmetry and oxygen-mediated indirect exchange interactions with Mn ions of LSMO support. Spin polarization changes the semiconducting nature of infinite graphene nanoribbons to half-metallic state with visible spin-up density of states at the Fermi level. The h-BN nanoribbon binding energy is weaker than graphene nanoribbon ones with noticeably shorter interlayer distance. The asymmetry effect and indirect exchange interactions cause spin polarization of h-BN nanoribbon as well with formation of embedded states inside the band gap. The results show a possibility to use one-atom thick nanofragments to design LSMO-based heterostructures for spintronic nanodevices with h-BN as an inert spacer to develop different potential barriers.

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Держатели документа:
Kyungpook Natl Univ, Dept Chem, 80 Daehak Ro, Daegu 41566, South Korea.
Kyungpook Natl Univ, Green Nano Mat Res Ctr, 80 Daehak Ro, Daegu 41566, South Korea.
Siberian Fed Univ, 79 Svobodniy Pr, Krasnoyarsk 660041, Russia.
LV Kirensky Inst Phys SB RAS, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Natl Inst Quantum & Radiol Sci & Technol QST, Naka, Ibaraki 3191106, Japan.
Natl Univ Sci & Technol MISiS, Moscow 119049, Russia.

Доп.точки доступа:
Avramov, P. V.; Аврамов, Павел Вениаминович; Kuzubov, A. A.; Кузубов, Александр Александрович; Kuklin, A. V.; Куклин, Артем Валентинович; Lee, H.; Kovaleva, E. A.; Ковалева, Евгения Андреевна; Sakai, S.; Entani, S.; Naramoto, H.; Sorokin, P. B.; Ministry of Education and Science of the Russian Federation [K2-2015-033]; Russian Science Foundation [14-13-00139]; Japanese Science Foundation (JSPS KAKENHI) [16H3875]
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Theoretical investigation of magnetic properties in interfaces of magnetic nanoparticles and amorphous carbons / S. -J. Sun [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 432. - P. 102-105, DOI 10.1016/j.jmmm.2017.02.001. - Cited References: 21. - We would like to thank the Ministry of Science and Technology, Taiwan, for the Grant No. MOST 104-2112-M-390-001 and 104-2923-M-390-001-MY3 (Shih-Jye Sun). The work is supported also by the President of Russia program of the leading scientific schools, Grant NSh-7559.2016.2. . - ISSN 0304-8853
Кл.слова (ненормированные):
Antiferroelectricity -- Antiferromagnetism -- Ferromagnetism -- Molecular dynamics -- Nanomagnetics -- Nanoparticles -- Spin waves -- Antiferro-magnetic interactions -- Antiferromagnetics -- Kondo interactions -- Magnetic nano-particles -- Molecular dynamics simulations -- Spinwave excitation -- Theoretical investigations -- Theoretical modeling -- Amorphous carbon
Аннотация: Based on the experimental finding of the exchange bias in amorphous carbon samples with embedded Co nanoparticles and on the graphited character of the amorphous carbon interface confirmed by molecular dynamics simulations we have proposed the interface of graphited carbon to be antiferromagnetic. A theoretical model, which comprises the Kondo interactions in the interfaces of Co nanoparticles and the induced antiferromagnetic interactions in the graphited carbons, is employed to evaluate the ferromagnetism of the interfaces of Co nanoparticles. We have shown that the ferromagnetism of interfaces of Co nanoparticles will be enhanced by the increase of antiferromagnetic interaction as well as the increase of electron density in the graphited carbons. In particular, we found that the antiferromagnetic interactions in graphited carbons will change the spin-wave excitation in interfaces of Co nanoparticles from the quasiacoustic mode to the quasioptical one. © 2017 Elsevier B.V.

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Держатели документа:
Department of Applied Physics, National University of Kaohsiung, Kaohsiung, Taiwan
Department of Applied Physics, National Pingtung University, Pingtung, Taiwan
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sun, S.-J.; Hsu, Hua-Shu; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Chen, G.-L.
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The effect of paramagnetic impurities in normal metal on the critical current in a network of S-N-S Josephson junctions in bulk Y3/4Lu1/4Ba2Cu3O7+BaPb(1-x)Fe(x)O(3)composites / D. A. Balaev [et al.] // Supercond. Sci. Technol. - 2003. - Vol. 16, Is. 1. - P. 60-64, DOI 10.1088/0953-2048/16/1/311. - Cited References: 41 . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
CURRENT-VOLTAGE CHARACTERISTICS
   WEAK LINKS
   RESISTIVE PROPERTIES
   MAGNETIC-IMPURITIES
   EXCHANGE FIELD
   SNS JUNCTIONS
   F-S
   COMPOSITES
   SUPERCONDUCTOR
   SCATTERING
Кл.слова (ненормированные):
Critical currents -- Interfaces (materials) -- Josephson junction devices -- Paramagnetism -- Transport properties -- Non-superconducting ingredient -- Paramagnetic impurities -- Superconductor normal metal superconductor -- Oxide superconductors
Аннотация: Bulk Y3/4Lu1/4Ba2Cu3O7 + BaPb1-xFexO3 composites representing a model of a network of superconductor-normal metal-superconductor (SNS) Josephson junctions with paramagnetic impurities (Fe) in the N layers have been prepared. The transport properties of the composites have been studied. An exponential decay of the critical current with increasing Fe content in the non-superconducting ingredient of the composite has been observed. Such a behaviour is accounted for in terms of the de Gennes proximity effect theory.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Petrov, M. I.; Петров, Михаил Иванович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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The direct exchange mechanism of induced spin polarization of low-dimensional π-conjugated carbon- and h-BN fragments at LSMO(001) MnO-terminated interfaces / A. V. Kuklin [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 23-29, DOI 10.1016/j.jmmm.2016.12.096. - Cited References:70. - We acknowledge the Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk; the Joint Supercomputer Center of RAS, Moscow and the ICC of Novosibirsk State University for providing the computing resources. Russian Science Foundation (Grant No 14-13-00139) supported the work of Russian team. . - ISSN 0304-8853. - ISSN 1873-4766

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
HEXAGONAL BORON-NITRIDE
   THIN-FILMS
   GIANT MAGNETORESISTANCE
   METALLIC
Кл.слова (ненормированные):
Graphene nanoribbons -- DFT -- LSMO thin films -- Induced spin polarization -- h-BN nanoribbons -- Half-metal
Аннотация: Induced spin polarization of π-conjugated carbon and h-BN low dimensional fragments at the interfaces formed by deposition of pentacene molecule and narrow zigzag graphene and h-BN nanoribbons on MnO2-terminated LSMO(001) thin film was studied using GGA PBE+U PAW D3-corrected approach. Induced spin polarization of π-conjugated low-dimensional fragments is caused by direct exchange with Mn ions of LSMO(001) MnO-derived surface. Due to direct exchange, the pentacene molecule changes its diamagnetic narrow-band gap semiconducting nature to the ferromagnetic semiconducting state with 0.15 eV energy shift between spin-up and spin-down valence bands and total magnetic moment of 0.11 μB. Direct exchange converts graphene nanoribbon to 100% spin-polarized half-metal with large amplitude of spin-up electronic density at the Fermi level. The direct exchange narrows the h-BN nanoribbon band gap from 4.04 to 1.72 eV in spin-up channel and converts the h-BN ribbon semiconducting diamagnetic nature to a semiconducting magnetic one. The electronic structure calculations demonstrate a possibility to control the spin properties of low-dimensional π-conjugated carbon and h-BN fragments by direct exchange with MnO-derived LSMO(001) surface for spin-related applications.

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Доп.точки доступа:
Kuklin, A. V.; Kuzubov, A. A.; Кузубов, Александр Александрович; Kovaleva, E. A.; Ковалева, Евгения Андреевна; Lee, Hyosun; Sorokin, Pavel B.; Sakai, Seiji; Entani, Shiro; Naramoto, Hiroshi; Avramov, P. V.; Аврамов, Павел Вениаминович; Russian Science Foundation [14-13-00139]; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
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    Superconductivity on interfaces of nonsuperconducting granules La2CuO4 and La1.56Sr0.44CuO4 / A. A. Bykov [et al.] // J. Supercond. Nov. Magn. - 2018. - Vol. 31, Is. 12. - P. 3867–3874, DOI 10.1007/s10948-018-4668-x. - Cited References: 19. - The authors are grateful to D.A. Balaev for fruitful discussions, and I.V. Nemtsev for electronic microscope measurements in the center for shared use, KSC SB RAS. The work is supported by the Russian Science Foundation (project No. 17-72-10067). . - ISSN 1557-1939
   Перевод заглавия: Сверхпроводимость на интерфейсах несверхпроводящих гранул La2CuO4 и La1.56Sr0.44CuO4
Кл.слова (ненормированные):
Magnetic properties -- Superconductivity -- Oxide superconductors -- Grain boundaries -- LCO -- LSCO -- Josephson media
Аннотация: Composite materials fabricated by annealing of nonsuperconducting ceramics La2CuO4 and La1.56Sr0.44CuO4 at 910 °C during various time are investigated. Areas of superconducting La1.85Sr0.15CuO4 phase arises at boundaries of contacting nonsuperconducting granules. The volume fraction of the superconducting phase increases with increasing annealing time. A model describing the magnetic and transport properties of the samples at low magnetic fields is constructed. The magnetotransport characteristics of obtained samples at low magnetic fields (∼ 100 Oe) are defined by weak links network formed by superconducting areas. At high fields, behavior of the system is defined by a magnetization of the disconnected superconducting islands. The average size of the superconducting areas has been estimated from an extended critical state model.

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Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, Gatchina, 1, mkr., Orlova roshcha, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Bykov, A. A.; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Savitskaya, N. E.; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
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Structure and composition of Fe-Si interfaces in (Fe/Si)3 multilayer nanostructures / J. Bartolomé [et al.] // Third Asian school-conference on physics and technology of nanostructured materials (ASCO-NANOMAT 2015) : proceedings. - Vladivostok : Dalnauka, 2015. - Ст. PS.20.02i. - P. 18-19 . - ISBN 978-5-8044-1556-4

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Материалы конференции

Доп.точки доступа:
Bartolomé, J.; Badía-Romano, L.; Rubín, J. ; Magén, C.; Bürgler, D. E.; Rubio-Zuazo, J.; Castro, G. R. ; Varnakov, S. N.; Варнаков, Сергей Николаевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Belyaev, B. A.; Беляев, Борис Афанасьевич; Lyashchenko, S. A.; Лященко, Сергей Александрович; Platunov, M. S.; Платунов, Михаил Сергеевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Asian School-Conference on Physics and Technology of Nanostructured Materials(3 ; 2015 ; Aug. ; 19-26 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(3 ; 2015 ; авг. ; 19-26 ; Владивосток)
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10.

Structural, optical, and electronic properties of Cu-doped TiNxOy grown by ammonothermal atomic layer deposition / F. A. Baron, Y. L. Mikhlin, M. S. Molokeev [et al.] // ACS Appl. Mater. Interfaces. - 2021. - Vol. 13, Is. 27. - P. 32531-32541, DOI 10.1021/acsami.1c08036. - Cited References: 69. - This research was funded by the RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science (project code 20-42-240013) and by the grant of the Government of the Russian Federation for Creation of World Tier Laboratories (contract no. 075-15-2019-1886) . - ISSN 1944-8244. - ISSN 1944-8252

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
OXYNITRIDE THIN-FILMS
TITANIUM-NITRIDE
CONFORMAL TIN
Кл.слова (ненормированные):
atomic layer deposition -- titanium oxynitride -- copper doping -- surface segregation -- thin film
Аннотация: Copper-doped titanium oxynitride (TiNxOy) thin films were grown by atomic layer deposition (ALD) using the TiCl4 precursor, NH3, and O2 at 420 °C. Forming gas was used to reduce the background oxygen concentration and to transfer the copper atoms in an ALD chamber prior to the growth initiation of Cu-doped TiNxOy. Such forming gas-mediated Cu-doping of TiNxOy films had a pronounced effect on their resistivity, which dropped from 484 ± 8 to 202 ± 4 μΩ cm, and also on the resistance temperature coefficient (TCR), which decreased from 1000 to 150 ppm °C–1. We explored physical mechanisms causing this reduction by performing comparative analysis of atomic force microscopy, X-ray photoemission spectroscopy, X-ray diffraction, optical spectra, low-temperature transport, and Hall measurement data for the samples grown with and without forming gas doping. The difference in the oxygen concentration between the films did not exceed 6%. Copper segregated to the TiNxOy surface where its concentration reached 0.72%, but its penetration depth was less than 10 nm. Pronounced effects of the copper doping by forming gas included the TiNxOy film crystallite average size decrease from 57–59 to 32–34 nm, considerably finer surface granularity, electron concentration increase from 2.2(3) × 1022 to 3.5(1) × 1022 cm–3, and the electron mobility improvement from 0.56(4) to 0.92(2) cm2 V–1 s–1. The DC resistivity versus temperature R(T) measurements from 4.2 to 300 K showed a Cu-induced phase transition from a disordered to semimetallic state. The resistivity of Cu-doped TiNxOy films decreased with the temperature increase at low temperatures and reached the minimum near T = 50 K revealing signatures of the quantum interference effects similar to 2D Cu thin films, and then, semimetallic behavior was observed at higher temperatures. In TiNxOy films grown without forming gas, the resistivity decreased with the temperature increase as R(T) = – 1.88T0.6 + 604 μΩ cm with no semimetallic behavior observed. The medium range resistivity and low TCR of Cu-doped TiNxOy make this material an attractive choice for improved matching resistors in RF analog circuits and Si complementary metal–oxide–semiconductor integrated circuits.

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KSC SB RAS, Inst Chem & Chem Technol, Fed Res Ctr, Krasnoyarsk 660036, Russia.
KSC SB RAS, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Baron, F. A.; Барон, Филипп Алексеевич; Mikhlin, Yurii L.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Rautskiy, M. V.; Рауцкий, Михаил Владимирович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Shanidze, L. V.; Шанидзе, Лев Викторович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Smolyarova, T. E.; Смолярова, Татьяна Евгеньевна; Konovalov, Stepan O.; Zelenov, Fyodor, V; Tarasov, A. S.; Тарасов, Антон Сергеевич; Volkov, N. V.; Волков, Никита Валентинович; RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240013]; Government of the Russian Federation for Creation of World Tier Laboratories [075-15-2019-1886]
}
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11.

Role of interfaces in the permittivity tensor of thin layers of a ferromagnetic metal / S. G. Ovchinnikov, O. A. Maximova, S. A. Lyaschenko [et al.] // JETP Letters. - 2021. - Vol. 114, Is. 3. - P. 163-165, DOI 10.1134/S0021364021150066. - Cited References: 13. - This work was supported by the Russian Science Foundation, project no. 21-12-00226, http://rscf.ru/project/21-12-00226/ . - ISSN 0021-3640
Аннотация: It is known from experimental studies that the components of the permittivity tensor ε depend on layer thicknesses of multilayer thin films, and for nanometer layers, it is necessary to additionally consider the interlayer interfaces. This study provides an answer to the question of what is the reason for the influence of these interfaces on film properties. It is shown that the contribution of interband matrix elements for ferromagnetic films with off-diagonal components of the permittivity tensor determines the ratio between the diagonal and off-diagonal components of the tensor ε at a ferromagnetic layer thickness of about 10 nm.

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Публикация на русском языке Роль интерфейсов в формировании тензора диэлектрической проницаемости тонких слоев ферромагнитного металла [Текст] / С. Г. Овчинников, О. А. Максимова, С. А. Лященко [и др.] // Письма в ЖЭТФ. - 2021. - Т. 114 Вып. 3. - С. 192-195

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

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Maximova, O. A.; Максимова, Ольга Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Yakovlev, I. A.; Яковлев, Иван Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич
}
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12.

    Redefinition of crystal structure and Bi3+ yellow luminescence with strong near-ultraviolet excitation in La3BWO9:Bi3+ phosphor for white light-emitting diodes / J. Han [et al.] // ACS Appl. Mater. Interfaces. - 2018. - Vol. 10, Is. 16. - P. 13660-13668, DOI 10.1021/acsami.8b00808. - Cited References: 40 . - ISSN 1944-8244
   Перевод заглавия: Переопределение кристаллической структуры La3BWO9:Bi3+ и желтая люминесценция с сильным возбуждением в области близкой к ультрафиолету в это люминофоре для белых светодиодов
Кл.слова (ненормированные):
Bi3+ luminescence -- borotungstates -- crystal structure -- WLEDs -- X-ray diffraction -- yellow phosphor
Аннотация: Bi3+-activated photonic materials have received increased interest recently because they can be excited effectively with near-ultraviolet (NUV) but not visible light, thereby avoiding the reabsorption among phosphors, which cannot be solved intrinsically by traditional rare earth (e.g., Eu2+, Ce3+) phosphors. Such unique property suggests their potential application in NUV chip-based WLEDs. However, few Bi3+ phosphors exhibit strong excitation peak in NUV, though the excitation tail of some can extend to NUV. Herein, we report a novel yellow-emitting La3BWO9:Bi3+ (LBW:Bi3+) phosphor with strong NUV excitation. The photoluminescence (PL) spectroscopy analysis indicates that there are two Bi3+ luminescent centers in LBW:Bi3+ phosphor, which is clearly in contradiction with the established hexagonal structure of La3BWO9 with P63 space group because only one La site in this structure can accommodate Bi3+ ions. Combining the luminescent properties of Bi3+ with Rietveld refinement, La3BWO9 was redefined as a trigonal structure with the lower space group of P3 in which there are two independent crystallographic La sites. In addition, the rationalization of P3 space group was further confirmed by the finding of the reflection (0001) according to the extinction rule. Therefore, the PL behavior of Bi3+ can act as a complementary tool to determinate the real crystal structure especially when it is hard to distinguish by conventional X-ray diffraction techniques.

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State Key Laboratory of Luminescent Materials and Devices, Guangdong Eng. Technol. R. and D. Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
College of Chemistry and Molecular Engineering, Peking University, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
School of Chemistry, Sun Yat-Sen University, Guangzhou, China

Доп.точки доступа:
Han, J.; Pan, F.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Dai, J.; Peng, M.; Zhou, W.; Wang, J.
}
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13.

    Pressure-stimulated synthesis and luminescence properties of microcrystalline (Lu,Y)3Al5O12:Ce3+ garnet phosphors / V. V. Atuchin [et al.] // ACS Appl. Mater. Interfaces. - 2015. - Vol. 7, Is. 47. - P. 26235-26243, DOI 10.1021/acsami.5b08411. - Cited References: 75. - This work was partly supported by the National Natural Science Foundations of China (Grant Nos. 51272242 and 51511130035) and the Russian Foundation for Basic Research (Grant No. 15-52-53080 GFEN_a). V.V.A. was partly supported by the Ministry of Education and Science of the Russian Federation . - ISSN 1944-8244
   Перевод заглавия: Синтез стимулированный давлением и люминесцентные свойства микрокристаллических гранатов (Lu,Y)3Al5O12:Ce3+

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
LASER MASS-SPECTROMETRY
   LIGHT-EMITTING-DIODES
   WHITE-LIGHT
   SINGLE-CRYSTALS
   OPTICAL-PROPERTIES
   ELECTRONIC-STRUCTURE
   VIBRATIONAL PROPERTIES
   PHASE-TRANSITIONS
   PARTICLE-SIZE
   GROWTH
Кл.слова (ненормированные):
synthesis -- pressure -- garnet -- structure -- luminescence -- phosphor
Аннотация: The Lu2.98Ce0.01Y0.01Al5O12 and Y2.99Ce0.01Al5O12 phosphors were synthesized by solid state reaction at temperature 1623 K and pressure 1.5 × 107 Pa in (95% N2 + 5% H2) atmosphere. Under the conditions, the compounds crystallize in the form of isolated euhedral partly faceted microcrystals ∼19 μm in size. The crystal structures of the Lu2.98Ce0.01Y0.01Al5O12 and Y2.99Ce0.01Al5O12 garnets have been obtained by Rietveld analysis. The photoluminescence (PL) and X-ray excited luminescence (XL) spectra obtained at room temperature indicate broad asymmetric bands with maxima near 519 and 540 nm for Y2.99Ce0.01Al5O12 and Lu2.98Ce0.01Y0.01Al5O12, respectively. The light source was fabricated using the powder Lu2.98Ce0.01Y0.01Al5O12 phosphor and commercial blue-emitting n-UV LED chips (λex = 450 nm). It is found that the CIE chromaticity coordinates are (x = 0.388, y = 0.563) with the warm white light emission correlated color temperature (CCT) of 6400 K and good luminous efficiency of 110 lm/W. © 2015 American Chemical Society.

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Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, Russian Federation
Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk, Russian Federation
Analytical Laboratory, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation
Department of Applied Physics, Novosibirsk State University, Novosibirsk, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Laboratory of High Pressure Minerals and Diamond Deposits, Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China

Доп.точки доступа:
Atuchin, V. V.; Beisel, N. F.; Galashov, E. N.; Mandrik, E. M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Yelisseyev, A. P.; Yusuf, A. A.; Xia, Z.
Свободных экз. нет}
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14.

Peculiarities of magnetic properties of Ni-Ge layered films / A. V. Chernichenko [et al.] // TRENDS IN MAGNETISM. - 2011. - Vol. 168-169. - P261-264, DOI 10.4028/www.scientific.net/SSP.168-169.261 . - ISSN 1012-0394
Кл.слова (ненормированные):
exchange bias effect -- magnetic properties -- ni and ge mutual diffusion -- ni-ge layer structures -- surface morphology -- antiferromagnetism -- diffusion -- germanium -- magnetic properties -- magnetization -- morphology -- phase interfaces -- solids -- germanium -- magnetic properties -- magnetization -- nickel -- surface morphology -- temperature distribution -- antiferromagnetic phase -- exchange bias effects -- ge films -- layered films -- low temperatures -- magnetization temperature -- mutual diffusion -- ni and ge mutual diffusion -- ni-ge layer structures -- ge layers -- surface morphology -- magnetism
Аннотация: The surface morphology and magnetic properties of layered Ni-Ge films were investigated. The films surface has been shown to consist of the grains of 2 - 4 nm in height with the average radius of about 40-80 nm. Magnetization temperature dependences are different for FC and ZFC processes; in the latter case, the magnetization maximum is observed near the temperature T m?50K. The exchange bias effect is observed at low temperatures. The results are explained by the formation of the antiferromagnetic phase in the interface between Ni and Ge layers due to the Ge and Ni mutual diffusion.

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

Доп.точки доступа:
Chernichenko, A. V.; Черниченко, Ангелина Виталиевна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Marushchenko, D. A.; Марущенко, Дмитрий Анатольевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Greben'kova, Yu. E.; Гребенькова, Юлия Эрнестовна
}
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15.

Original concept of cracked template with controlled peeling of the cells perimeter for high performance transparent EMI shielding films / A. S. Voronin, Y. V. Fadeev, F. S. Ivanchenko [et al.] // Surf. Interfaces. - 2023. - Vol. 38. - Ст. 102793, DOI 10.1016/j.surfin.2023.102793. - Cited References: 73. - The development of the processes of synthesis of a cracked template and conceptualization and optimization parameters peeling cells perimeter of the cracked template for the requirements of the final products were carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation within the framework of state task No. 0287–2021–0026. The development of the processes of the formation of metal films and the study of the structural, optical, electrical and shielding properties of the samples were carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation within the framework of state assignment No. FSFN-2022–0007. The physicochemical analysis of materials was carried out on equipment from the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». We would like to thank Anastasia Tamarovskaya for the macro photo of thick Ag mesh samples. . - ISSN 2468-0230
Кл.слова (ненормированные):
Transparent conductor -- Cracked template -- Cells perimeter peeling -- EMI shielding films
Аннотация: The problem of sputtering of thick metal films on micro and nanotemplates is important for obtaining mesh transparent conductors with excellent optoelectric characteristics. In this work, we demonstrate for the first time the possibility of controlling the degree of peeling of the cell perimeter from the substrate for a cracked template based on egg white by alternating the operations of moistening the template with saturated water vapor and shock drying with hot air. Local peeling of the cracked template cells perimeter makes it possible to increase the thickness of the metal sputtered on the cracked template by more than 1 µm, which is not achievable for other lithographic approaches. Our technique was used to obtain thick Ag meshes with a low sheet resistance of no more than 1.59 Ω/sq and a transparency of about 89.1%. The thick Ag meshes show a shielding efficiency (SE) of 49 dB or 99.998% of the incident power of an electromagnetic wave at a frequency of 1 GHz. In a sandwich geometry, thick Ag meshes, which simulates a real shielding window, the shielding efficiency (SE) reaches 71 dB with a transparency of more than 80%.

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Держатели документа:
Federal Research Center «Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences» (FRC KSC SB RAS), Krasnoyarsk, Russia 660036
Siberian Federal University, Krasnoyarsk, Russia 660041
Bauman Moscow State Technical University, Moscow Russia 105005
N.N. Semenov Federal Research Center of Chemical Physics of Russian Academy of Sciences, Moscow, Russia 119334
Reshetnev Siberian University Science and Technology, Krasnoyarsk, Russia 660037
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk Russia 660036
LLC Research and Production Company “Spectehnauka”, Krasnoyarsk, Russia 660043
Tomsk Polytechnic University, Tomsk, Russia 634050
V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia 634055

Доп.точки доступа:
Voronin, A. S.; Fadeev, Y. V.; Ivanchenko, F. S.; Dobrosmyslov, S. S.; Makeev, M. O.; Mikhalev, P. A.; Osipkov, A. S.; Damaratsky, I. A.; Ryzhenko, D. S.; Yurkov, G. Y.; Simunin, M. M.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Nedelin, S. V.; Неделин, С. В.; Zolotovsky, N. A.; Золотовский, Н. А.; Bainov, D. D.; Khartov, S. V.
}
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16.

    Optical textures and orientational structures of nematic and cholesteric droplets with heterogeneous boundary conditions / O. O. Prishchepa [et al.] // Mol. Cryst. Liquid Cryst. - 2008. - Vol. 489, Is. 1. - P. 84-93, DOI 10.1080/15421400802219817. - Cited Reference Count: 17. - Гранты: This work was supported in part by the grants of DSP, No 2.1.1.1814; RFBR, No 0803-01007; Council of the President of the RF for Support of Young Scientists and Leading Scientific Schools (projects NSh-3818-2008.3, MK-3624.2007.2); RAS, No 8.1, 2.10.2; SB RAS, No 33. - Финансирующая организация: DSP [2.1.1.1814]; RFBR [0803-01007]; Young Scientists and Leading Scientific Schools [NSh-3818-2008.3, MK-3624.2007.2]; RAS [8.1, 2.10.2]; SB RAS [33] . - ISSN 1542-1406
Рубрики:
LIQUID-CRYSTAL DROPLETS
   ELECTRIC-FIELD
   BIPOLAR
Кл.слова (ненормированные):
director configuration -- interfaces -- nematic and cholesteric droplets -- surfactant -- Director configuration -- Interfaces -- Nematic and cholesteric droplets -- Surfactant -- Boundary value problems -- Drop formation -- Drops -- Fluid mechanics -- Phospholipids -- Surface active agents -- Boundary conditioning -- Director configuration -- Homeotropic -- Interfaces -- Nematic and cholesteric droplets -- Nematic droplets -- Nematics -- Optical textures -- Orientational structures -- Surface anchoring -- Surfactant -- Boundary conditions
Аннотация: Brief review of the orientational structures within the droplets of chiral as well as achiral nematics with the heterogeneous boundary conditions is reported. The modification of boundary conditions in the 5CB/polyvinylbutyral and LN-396/cholesterylacetate/polyvinylbutyral compositions with the planar anchoring at the interface is created by addition of the homeotropic surfactant (lecithin). Sequences of the novel stable and non-stable orientational structures being realized within the droplets of achiral nematic are presented. For the LN-396 nematic droplets doped by cholesterylacetate the formation of a spherulite structure has been shown when the tangential surface anchoring is modified to the homeotropic one.

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Держатели документа:
Siberian Fed Univ Krasnoyarsk, Krasnoyarsk Sci Ctr, SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
L.V. Kirensky Institut of physics

Доп.точки доступа:
Prishchepa, O. O.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Gardymova, A. P.; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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17.

On the possibility of contact-induced spin polarization in interfaces of armchair nanotubes with transition metal substrates / A. A. Kuzubov [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 396. - P. 102-105, DOI 10.1016/j.jmmm.2015.08.037. - Cited References: 24. - This work was supported by the government contract of The Ministry of Education and Science of the Russian Federation to Siberian Federal University (Grant no. 161500.2014/K). The authors would like to thank Institute of Computational Modeling of SB RAS, Krasnoyarsk; Joint Supercomputer Center of RAS, Moscow; Center of Equipment for Joint Use of Siberian Federal University, Krasnoyarsk: and Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk for providing the access to their supercomputers. . - ISSN 0304-8853

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
INITIO MOLECULAR-DYNAMICS
   TOTAL-ENERGY CALCULATIONS
   AUGMENTED-WAVE METHOD
   CARBON NANOTUBES
   BASIS-SET
   1ST-PRINCIPLES
   SURFACES
Кл.слова (ненормированные):
Nanotubes -- Cobalt -- Nickel -- Spin polarization -- DFT
Аннотация: The interaction between armchair carbon and boron nitride nanotubes (NT) with ferromagnetic transition metal (TM) surfaces, namely, Ni(111) and Co(0001), was studied by means of density functional theory. Different configurations of composite compartments mutual arrangement were considered. Partial densities of states and spin density spatial distribution of optimized structures were investigated. Influence of ferromagnetic substrate on nanotubes' electronic properties was discussed. The values of spin polarization magnitude at the Fermi level are also presented and confirm the patterns of spin density spatial distribution. © 2015 Elsevier B.V. All rights reserved.

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Держатели документа:
Department of Chemistry, Siberian Federal University, 79 Svobodny Prospect, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, 50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kuzubov, A. A.; Кузубов, Александр Александрович; Kovaleva, E. A.; Ковалева, Евгения Андреевна; Tomilin, F. N.; Томилин, Феликс Николаевич; Mikhaleva, N. S.; Михалева, Наталья Сергеевна; Kuklin, A. V.; Куклин, Артем Валентинович
}
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18.

Multistability, absolute negative conductivity and spontaneous current generation in semiconductor superlattices in large magnetic fields / E. H. Cannon [et al.] // Superlattices Microstruct. - 2000. - Vol. 27, Is. 5-6. - P. 495-498, DOI 10.1006/spmi.2000.0866. - Cited References: 7 . - ISSN 0749-6036

РУБ Physics, Condensed Matter
Рубрики:
TRANSPORT
Кл.слова (ненормированные):
superlattice -- miniband transport -- nonlinear transport -- Current voltage characteristics -- Electric conductivity -- Electron transport properties -- Magnetic field effects -- Mathematical models -- Multistable circuits -- Balance equation models -- Hot electrons -- Miniband transport -- Semiconductor superlattices
Аннотация: We discuss electron transport through a semiconductor superlattice subject to an electric field parallel to, and a magnetic field perpendicular to, the growth axis using a semiclassical balance equation model. We find that the current-voltage characteristic becomes multistable in a large magnetic field; furthermore, hot electrons display novel features in their current-voltage characteristic, including absolute negative conductivity and a spontaneously generated de current at zero bias. (C) 2000 Academic Press.

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Держатели документа:
Univ Illinois, Dept Phys, Urbana, IL 61801 USA
Univ Loughborough, Dept Phys, Loughborough LE11 3TU, Leics, England
LV Kirensky Phys Inst, Theory Nonlinear Proc Lab, Krasnoyarsk 660036, Russia
ИФ СО РАН
Department of Physics, Univ. Illinois at Urbana-Champaign, 1110 W. Green St., Urbana, IL 61801, United States
Department of Physics, Loughborough University, Loughborough, LE11 3TU, United Kingdom
Theor. of Nonlinear Processes Lab., Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Cannon, E. H.; Campbell, D. K.; Kusmartsev, F. V.; Alekseev, K. N.; International Workshop on Surgaces and Interfaces in Mesoscopic Devices(3 ; 1999 ; Dec. ; 6-10 ; Maui, Hawaii)
}
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19.

Morphology of the asymmetric iron-silicon interfaces / L. Badia-Romano [et al.] // J. Alloys Compd. - 2015. - Vol. 627. - P. 136-145, DOI 10.1016/j.jallcom.2014.12.019. - Cited References:69. - The financial support of the Spanish MINECO MAT2011-23791, the Presidentof Russia Grant (NSh-1044.2012.2), RFFI Grant 13-02-01265, the Ministryof Education and Science of Russian Federation (14.604.21.0002 and02G25.31.0043), Aragonese DGA-IMANA E34 (cofunded by Fondo SocialEuropeo) and that received from the European Union FEDER funds isacknowledged. L.B.R. acknowledges the Spanish MINECO FPU 2010 grant. . - ISSN 0925. - ISSN 1873-4669. -

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy &
Рубрики:
RAY PHOTOELECTRON-SPECTROSCOPY
ELECTRON MOSSBAUER-SPECTROSCOPY
Кл.слова (ненормированные):
Fe/Si nanolayers -- Interfaces -- Fe silicides -- Compositional depth -- HAXPES -- CEMS
Аннотация: A systematic study of the iron–silicon interfaces formed upon preparation of (Fe/Si) multilayers has been performed by combination of modern and powerful techniques. Samples were prepared by thermal evaporation under ultrahigh vacuum onto a Si(1 0 0) substrate. The morphology of these films and their interfaces was studied by a combination of scanning transmission electron microscopy, X-ray reflectivity, angle resolved X-ray photoelectron spectroscopy and hard X-ray photoelectron spectroscopy. The Si-on-Fe interface thickness and roughness were determined to be 1.4(1) nm and 0.6(1) nm, respectively. Moreover, determination of the stable phases formed at both Fe-on-Si and Si-on-Fe interfaces was performed using conversion electron Mössbauer spectroscopy on multilayers with well separated Si-on-Fe and Fe-on-Si interfaces. It is shown that while a fraction of Fe remains as α-Fe, the rest has reacted with Si, forming the paramagnetic c-Fe1−xSi phase and a ferromagnetic Fe rich silicide (DO3 type phase). We conclude that the paramagnetic c-Fe1−xSi silicide sublayer is identical in both Si-on-Fe and Fe-on-Si interfaces, whereas an asymmetry is revealed in the composition of the ferromagnetic silicide sublayer.

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Держатели документа:
Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain
Univ Zaragoza, Dept Ciencia Mat & Ingn Met, E-50018 Zaragoza, Spain
Univ Zaragoza, INA, LMA, E-50018 Zaragoza, Spain
Fdn ARAID, E-50004 Zaragoza, Spain
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
Siberian Aerosp Univ, Krasnoyarsk 660014, Russia
ESRF, SpLine Spanish CRG, F-38043 Grenoble, France
CSIC, Inst Ciencia Mat Madrid, Madrid, Spain

Доп.точки доступа:
Badía-Romano, L.; Rubin, J.; Bartolomé, F.; Magen, C.; Bartolome, J.; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Rubio-Zuazo, J.; Castro, G.R.
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20.

Morphological and magnetic study at the interfaces of (fE/sI)3 multilayers [Текст] / J. Bartolome [и др.] // V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism : abstracts. - Vladivostok : FEFU, 2013. - P206 . - ISBN 978-5-7444-3124-2

Доп.точки доступа:
Bartolome, J.; Badía-Romano, L.; Rubin, J.; Bürgler, D. E.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Varnakov, S.N.; Варнаков, Сергей Николаевич; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; Sept. ; 15-21 ; Vladivostok)
}
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