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57Fe Mössbauer spectroscopy of FexMn1–xS at low temperature / G. M. Abramova, O. A. Bayukov, Yu. V. Knyazev, S. P. Kubrin // 3-я Всероссийская научная конференция «Методы исследования состава и структуры функциональных материалов» (МИССФМ-2020) : 1-4 сент. 2020, Новосибирск : сб. тез. докл. - Новосибирск, 2020. - Ст. СД-16. - P. 309-310. - Библиогр.: 3. - This work was supported by the Russian Science Founation (project no. 17-12-01111) . - ISBN 978-5-906376-29-9

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Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Bayukov, O. A.; Баюков, Олег Артемьевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Kubrin, S. P.; Российская академия наук; Сибирское отделение РАН; Институт катализа им. Г.К. Борескова Сибирского отделения РАН; Новосибирский государственный университет; Институт ядерной физики им. Г.И. Будкера Сибирского отделения РАН; Новосибирский институт органической химии им. Н. Н. Ворожцова СО РАН; Институт неорганической химии им. А.В. Николаева Сибирского отделения РАН"Методы исследования состава и структуры функциональных материалов", Всероссийская научная конференция(3 ; 2020 ; сент. ; Новосибирск)
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Abramova, G. M.
Metal-insulator transition, magnetoresistance, and magnetic properties of 3d-sulfides (Review) / G. M. Abramova, G. A. Petrakovskii // Low Temp. Phys. - 2006. - Vol. 32, Is. 8-9. - P. 725-734 ; Физика низких температур, DOI 10.1063/1.2219495. - Cited References: 74 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
GIANT-MAGNETORESISTANCE
   PHASE-TRANSITION
   ALPHA-MNS
   COLOSSAL MAGNETORESISTANCE
   SINGLE-CRYSTALS
   FES-MNS
   SULFIDES
   FERROMAGNETISM
   SEMICONDUCTORS
   TEMPERATURE
Аннотация: The results of a study of the transport and magnetic properties of some sulfides of 3d elements are reported. The concentration transitions with a change of conductivity type and a change of magnetic order are considered, and the features of the colossal magnetoresistance in FexMn1-xS and CuVxCr1-xS2 solid solutions are discussed.

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Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Абрамова, Галина Михайловна

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ACOUSTIC PROPERTIES OF TERBIUM FERRITE-GARNET AT LOW-TEMPERATURES / O. P. KVASHNINA [и др.] // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 8. - P. 2408-2410. - Cited References: 5 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
KVASHNINA, O. P.; KAPITONOV, A. M.; SMOKOTIN, E. M.; TITOVA, A. G.
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Aksenov, S. V.
Majorana modes and Fano resonances in Aharonov–Bohm ring with topologically nontrivial superconducting bridge / S. V. Aksenov, M. Yu. Kagan // J. Low Temp. Phys. - 2024, DOI 10.1007/s10909-024-03171-5. - Cited References: 46. - We were inspired by Andreev’s seminal contribution in the superconducting nanophysics—the field which started in fact from Josephson effect and Andreev reflection. M. Yu. Kagan thanks the Program for basic research of the National Research University Higher School of Economics for support. The work was partially carried out within the state assignment of Kirensky Institute of Physics. S.V.A. thanks the Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" for support . - Article in press. - ISSN 0022-2291. - ISSN 1573-7357
Кл.слова (ненормированные):
Topological superconductivity -- Majorana modes -- Aharonov–Bohm ring -- Fano resonanse
Аннотация: We study different resonances (first of all of the Fano type) in the interference device formed by the Aharonov–Bohm ring with superconducting (SC) wire in the topologically nontrivial state playing a role of a bridge between top and bottom arms. We analyze Majorana modes on the ends of the SC wire and show that the collapse of the additional Fano resonance, that is initially induced by transport scheme asymmetry, is connected with the increase of the length of the bridge when the binding energy of the Majorana end modes tends to zero. In local transport regime, the Fano resonances are stable against the change of the transport symmetry. The reasons of both collapse and sustainability are analyzed using a spinless toy model including the Kitaev chain.

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Держатели документа:
Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russia, 660036
National Research University Higher School of Economics, Myasnitskaya Street 20, Moscow, Russia, 101000
P.L. Kapitza Institute for Physical Problems, Russian Academy of Sciences, Kosygin Street 2, Moscow, Russia, 119334

Доп.точки доступа:
Kagan, M. Yu.; Аксенов, Сергей Владимирович
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    Aleksandrov, A. V.
    Inter-satellite optical communication link / A. V. Aleksandrov, A. V. Vasilenko, D. O. Korolev // Sib. J. Sci. Technol. - 2019. - Vol. 20, Is. 2. - P. 204-209 ; Сибирский журнал науки и технологий, DOI 10.31772/2587-6066-2019-20-2-204-209. - Библиогр.: 15 . - ISSN 2587-6066
   Перевод заглавия: Межспутниковая оптическая линия связи
Кл.слова (ненормированные):
optical communication -- low-orbit spacecraft -- repeater satellite -- channel parameters -- оптическая связь -- низкоорбитальный космический аппарат -- спутник ретранслятор -- параметры канала
Аннотация: A two-level system of data transmission in the optical range is considered between a low-orbit spacecraft located in a sun-synchronous orbit and a repeater satellite located in a geostationary orbit. This topic is rather relevant due to the fact that the rapid development of remote sensing satellites resulted in the increase of the amount of transmitted infor- mation, which in consequence introduced new requirements for communication systems. The increase of data transmission rate and severization of requirements for communication systems contributed to the development of one of the most promising areas of space communications, based on the information transmission via a laser channel, due to a high energy concentration and a much higher carrier frequency. The prospects for the application of optical communication systems are designated by lower power consumption, dimensional specifications and the mass of the transceiver equipment of the optical range (compared to radiofrequency range systems). The article describes the solution of application of optical communication link between a low-orbit spacecraft and a repeater satellite. The main factors that contribute to the attenuation in the process of signal propagation along the route are presented and analyzed. A model of a communication channel between a low-orbit spacecraft and a repeater satellite is provided for a visual image. Two different approaches of mutual guidance and tracking of laser terminals are described for using beacons and without ones. EDRS foreign system is considered as an analogue. The estimation of the main parameters of the communication link is given. The communication system considered in the article will allow for greater carrier capacity of the data transmission in the optical range between the low-orbit spacecraft and repeater satellite. The application of this system will allow solving problems, including in the interests of any departments and structures of the Ministry of Defense of the Russian Federation, for which the rate of obtaining information is one of the basic requirements for a satellite communication system. The tasks of precise targeting of receiving and transmitting devices arising as a result of narrow beam patterns can be solved with current technical means.
Рассмотрена двухуровневая система передачи данных оптического диапазона между низкоорбитальным космическим аппаратом (НКА), находящимся на солнечно-синхронной орбите, и спутником-ретранслятором (СР), находящимся на геостационарной орбите. Данная тема является весьма актуальной в связи с тем, что стремительное развитие спутников дистанционного зондирования земли привело к повышению объемов передаваемой информации, что в следствии привело к новым требованиям к системам связи. Увеличение скорости передачи данных, повышение требований к системам связи способствовало развитию одного из перспективных направлений космической связи, основанного на передаче информации по лазерному каналу благодаря высокой концентрации энергии и гораздо более высокой частоте несущей. Меньшее энергопотребление, габаритные размеры и масса приемопередающей аппаратуры оптического диапазона (по сравнению с системами радиодиапазона) определяют перспективы применения оптических систем связи. В статье описано решение использования между НКА и СР оптической линии связи. Приведены и проанализированы основные факторы, вносящие ослабление в процессе распространения сигнала на трассе. Приведена модель для наглядного отображения канала связи между НКА и СР. Описаны два разных подхода взаимного наведения и сопровождения лазерных терминалов с использованием маяков и без маяков. В качестве близкого аналога рассмотрена зарубежная система EDRS. Приведена оценка основных параметров линии связи. Рассмотренная в статье система связи сможет обеспечить большую пропускную способность при передаче данных в оптическом диапазоне между НКА и СР. Применение данной системы позволит решать задачи, в том числе в интересах любых ведомств и структур МО РФ, для которых скорость получения информации является одним из основных требований, предъявляемых к системе спутниковой связи. Задачи точного наведения приемных и передающих устройств, возникающие как следствие узких диаграмм направленности, можно решить современными техническими средствами.

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Держатели документа:
Kirensky Institute of Physics - Federal Research Center “Krasnoyarsk Scientific Center” Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
JSC “Academician M. F. Reshetnev “Information Satellite Systems”, Zheleznogorsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vasilenko, A. V.; Василенко, А. В.; Korolev, D. O.; Королев, Д. О.; Александров А. В.

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Aleksandrov, K. S.
Structural distortions in families of perovskite-like crystals / K. S. Aleksandrov, J. . Bartolome // Phase Transit. - 2001. - Vol. 74, Is. 3. - P. 255-335, DOI 10.1080/01411590108228754. - Cited References: 262 . - ISSN 0141-1594

РУБ Crystallography + Physics, Condensed Matter
Рубрики:
LOW-TEMPERATURE PHASE
   INELASTIC-NEUTRON-SCATTERING
   POWDER PROFILE REFINEMENT
   MII = CO
   X-RAY
   RAMAN-SCATTERING
   ORDERED PEROVSKITE
   RHOMBOHEDRAL PEROVSKITES
   RB2KMIIIF6 ELPASOLITES
   MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.

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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
ИФ СО РАН

Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
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An update on inert anodes for aluminium electrolysis / A. S. Yasinskiy, S. K. Padamata, P. V. Polyakov, A. V. Shabanov // Non-Ferrous Met. - 2020. - Vol. 48, Is. 1. - P. 15-23, DOI 10.17580/nfm.2020.01.03. - Cited References: 62. - The work is performed as a part of the state assignment for the science of Siberian Federal University, project number FSRZ-2020-0013. Use of equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” is acknowledged . - ISSN 2072-0807
Кл.слова (ненормированные):
Inert anodes -- aluminium electrolysis -- CO2 emission -- metallic anode -- cermet anode -- ceramic anode -- oxygenevolving electrode -- fluoride melt -- corrosion -- oxidation -- low-temperature electrolyte -- Hall-Heroult cell
Аннотация: This update includes the literature related to the inert anodes which were published in the past decade. The metallic anodes are widely regarded as promising candidates to replace the carbon anodes due to its attractive properties like good electrical conductivity, easy to manufacture and high resistance to high thermal shocks. The metals have been tested in pure state and alloy (binary, ternary) form. The oxide scale formed on the anode surface acts as a barrier between the electrolyte and the anode, which protects the anode from being dissolved. The layer of molten fluorides is formed between the scale and the metal anode after a certain time of polarization, and the oxide scale acts as a bipolar electrode. Metal like Cu is reduced at the internal side of the scale. This paper elaborates the effects of various parameters on the performance of the anode. Cu-based alloys (Cu – Ni – Fe and Cu – Al) have shown promising results and could perform well in low-temperature electrolytes. It has been well established that the Cu content in Cu – Ni – Fe and Cu – Al alloys plays a major role in the metal dissolution as the CuO/Cu2O scales formed on the outer layer act as a sacrificial one. The corrosion rate of an anode can be reduced by decreasing the operating temperature, which is possible by using the KF – AlF3 melts. The use of suspensions can increase the purity of the produced metal by stop-ping the anode products to come in contact with cathode metal. Many industries including RUSAL and ELYSIS are still conducting a considerable amount of research to develop an inert anode and are expecting to have a carbon-free cell in the nearest future.

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Держатели документа:
Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Molecular Spectroscopy, Krasnoyarsk Science Center SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yasinskiy, A. S.; Padamata, S. K.; Polyakov, P. V.; Shabanov, A. V.; Шабанов, Александр Васильевич
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Antiferromagnetic resonance in crystalline PrFe3(BO3)4 / A. N. Bludov [et al.] // Low Temp. Phys. - 2018. - Vol. 44, Is. 2. - P. 139-143, DOI 10.1063/1.5020909. - Cited References: 18 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied

Аннотация: Experimental AFMR studies of crystalline PrFe3(BO3)4 over a wide frequency range of 10–143 GHz at a temperature of 4.2 K have been carried out. The high-frequency properties of praseodymium ferroborate are well described in terms of a model of a two-sublattice antiferromagnet with an “easy axis” anisotropy. An energy gap of 134.3 ± 0.5 GHz is determined and the magnitude of the effective magnetic anisotropy field is estimated to be 1.9 ± 0.1 kOe. An analysis indicates that the spin-orientational phase transition in this compound is a first order transition.

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Публикация на русском языке Антиферромагнитный резонанс в кристалле PrFe3(BO3)4 [Текст] / А. Н. Блудов [и др.] // Физ. низк. температур. - 2018. - Т. 44 Вып. 2. - С. 185-190

Держатели документа:
Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Technol, Pr Nauki 47, UA-61103 Kharkov, Ukraine.
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Bludov, A. N.; Pashchenko, V. A.; Kobets, M. I.; Bedarev, V. A.; Merenkov, D. N.; Gnatchenko, S. L.; Gudim, I. A.; Гудим, Ирина Анатольевна
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Antiferromagnetic resonance study of the magnetic structure of Nd0.75Dy0.25Fe3(BO3)(4) / M. I. Kobets [et al.] // Low Temp. Phys. - 2014. - Vol. 40, Is. 7. - P. 629-634, DOI 10.1063/1.4890992. - Cited References: 17 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied

Аннотация: The effect of replacing Nd3+ ions with Dy3+ ions on the resonance properties of Nd0.75Dy0.25Fe3(BO3)(4) is studied. The antiferromagnetic resonance (AFMR) method is used to detect an easy axis-easy plane magnetic spin-reorientation phase transition owing to competing exchange interactions of Nd-Fe and Dy-Fe, and the frequency-field dependence of the AFMR spectrum before and after the phase transition is studied. At 4.2 K, the detected resonance spectra in the H parallel to c direction are AFMR modes of iron, and their frequency-field dependences correspond to easy-axis (H 15 kOe) and easy-plane (H 16 kOe) magnetic structures with magnon excitation energy gaps of 77.2 and 100.3 GHz, respectively. The effective magnetic anisotropies responsible for these gaps are 0.7 and 1.2 kOe, respectively. Substitution by Dy3+ ions in crystalline Nd0.75Dy0.25Fe3(BO3)(4) in the paramagnetic region produces an additional static internal field owing to polarization, which leads to a shift in the resonance field of the EPR absorption line and a change in the g-factor of the Fe3+ ions. (C) 2014 AIP Publishing LLC.

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Держатели документа:
Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
Russian Acad Sci, LV Kirenskii Inst Phys, Urals Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kobets, M. I.; Dergachev, K. G.; Khatsko, E. N.; Gnatchenko, S. L.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна
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10.

ANTIFERROMAGNETIC-RESONANCE OF LOW-DIMENSIONAL RB2MNXCD1-XCL4 ANTIFERROMAGNETS / G. A. PETRAKOVSKII [и др.] // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 4. - P. 1200-1202. - Cited References: 5 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
PETRAKOVSKII, G. A.; EMELYANOVA, L. S.; POZDNYAKOV, V. G.; KOROLEV, V. K.
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