Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Semenov S. V., Petrov M. I.
Заглавие : Correlation between magnetoresistance and magnetization hysteresis in a granular high-T C superconductor: Impact of flux compression in the intergrain medium
Место публикации : J. Supercond. Nov. Magn.: Springer, 2014. - Vol. 27, Is. 6. - P.1425-1429. - ISSN 1557-1939, DOI 10.1007/s10948-014-2491-6. - ISSN 1557-1947
Примечания : Cited References: 27
Предметные рубрики: HIGH-TEMPERATURE SUPERCONDUCTOR
JOSEPHSON MEDIUM
CRITICAL-STATE
YBA2CU3O7-DELTA
FIELDS
BEHAVIOR
HTSC
COMPOSITES
RESISTANCE
MOTION
Ключевые слова (''Своб.индексиров.''): granular superconductor--josephson medium--effective field--magnetoresistance--magnetization hysteresis
Аннотация: The correlation between experimental magnetic field dependences of magnetoresistance and magnetization hysteresis in granular YBa2Cu3O7 is established. Within the proposed approach, magnetoresistance is assumed to be determined by the effective field in the intergrain boundaries the ensemble of which is considered to be a Josephson medium. The effective field in the intergrain medium can be written in the form B (eff)(H)=H-4 pi M(H)x alpha, where alpha is the parameter of averaged demagnetizing factors of grains and the degree of flux compression. A comparison of experimental magnetoresistance R(H) and magnetization M(H) hysteresis dependences obtained at different external magnetic field sweep rates yields the value alpha similar to 10, which is caused by the flux compression between grains. The proposed model describes well most of the features of the magnetoresistance hysteresis in granular high-T (C) superconductors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Derevyagina L. S., Gordienko A. I., Surikova N. S., Volochaev M. N.
Заглавие : Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel
Место публикации : Mater. Sci. Eng. A. - 2021. - Vol. 816. - Ст.141275. - ISSN 09215093 (ISSN), DOI 10.1016/j.msea.2021.141275
Примечания : Cited References: 43
Аннотация: Ferrite-bainite microstructures and impact toughness of the X65 low-carbon microalloyed steel were investigated after helical rolling at 1000, 920, 850, and 810 °C followed by continuous cooling in air. After helical rolling at 1000 °C, granular bainite with large areas of the massive-shape martensite-austenite constituent (d = 1.5 μm) and a high fraction of twinned martensite (d › 2.0 μm) were observed in the steel. This caused a decrease in impact energy at low test temperatures (for example, 70 J at –70°С). Lowering the helical rolling temperature contributed to a reduction of dimensions of both ferrite-bainite and martensite-austenite constituent areas, as well as the replacement of the latter by a slender type one and an improvement in fracture toughness at the low temperatures. The highest impact energy level (210 J at –70 °C) was achieved after helical rolling at 850 °C due to the formation of a homogeneous microstructure, which included dispersed ferrite grains, granular bainite and small fractions of the slender type martensite-austenite constituent (d = 0.1–0.7 μm). In this case, areas of twinned martensite were absent.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kashkina L. V., Stebeleva O. P., Petrakovskaya E. A., Cherepakhin A. V.
Заглавие : Efficiency of high energy impact in synthesis of coal-water suspensions
Коллективы : Carbon: Fundamental Problem, Material Science, Technology - International Conference
Место публикации : Mater. Today: Proc. - 2018. - Vol. 5, Is. 12, Pt. 3. - P.26033-26037. - ISSN 2214-7853, DOI 10.1016/j.matpr.2018.08.024
Примечания : Cited References: 18
Ключевые слова (''Своб.индексиров.''): coal-water slurry--cavitation--nanocarbon--man-made gas emission
Аннотация: A study of thermophysical and ecological properties of highly loaded (50% mass.) coal-water slurry based on Kansk-Achinsk brown coal and distilled water (coal-water slurry fuel – CWSF) with exposure of used water to cavitation-treatment, microwave processing of coal powder, T-900 nanocarbon additions is presented. The study shows that under the conditions of this experiment the thermal physical properties of CWSF are most affected by the use of cavitation-activated water.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkov N. V., Tarasov A. S., Smolyakov D. A., Gustaitsev A. O., Rautskii M. V., Lukyanenko A. V., Volochaev M. N., Varnakov S. N., Yakovlev I. A., Ovchinnikov S. G.
Заглавие : Extremely high magnetic-field sensitivity of charge transport in the Mn/SiO2/ p -Si hybrid structure
Место публикации : AIP Adv.: American Institute of Physics, 2017. - Vol. 7, Is. 1. - Ст.015206. - ISSN 21583226 (ISSN), DOI 10.1063/1.4974876
Примечания : Cited References: 29. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research Projects Nos. 16-42-242036 and 16-42-243046, the Russian Ministry of Education and Science, state assignment no. 16.663.2014K.
Ключевые слова (''Своб.индексиров.''): electric fields--impact ionization--ionization--magnetic fields--magnetism--manganese--schottky barrier diodes--effect of magnetic field--high magnetic fields--low temperatures--magnetic and electric fields--magnetotransport effects--magnetotransport phenomena--schottky barriers--switching devices--magnetic field effects
Аннотация: We report on abrupt changes in dc resistance and impedance of a diode with the Schottky barrier based on the Mn/SiO2/p-Si structure in a magnetic field. It was observed that at low temperatures the dc and ac resistances of the device change by a factor of more than 106 with an increase in a magnetic field to 200 mT. The strong effect of the magnetic field is observed only above the threshold forward bias across the diode. The ratios between ac and dc magnetoresistances can be tuned from almost zero to 108% by varying the bias. To explain the diversity of magnetotransport phenomena observed in the Mn/SiO2/p-Si structure, it is necessary to attract several mechanisms, which possibly work in different regions of the structure. The anomalously strong magnetotransport effects are attributed to the magnetic-field-dependent impact ionization in the bulk of a Si substrate. At the same time, the conditions for this process are specified by structure composition, which, in turn, affects the current through each structure region. The effect of magnetic field attributed to suppression of impact ionization via two mechanisms leads to an increase in the carrier energy required for initiation of impact ionization. The first mechanism is related to displacement of acceptor levels toward higher energies relative to the top of the valence band and the other mechanism is associated with the Lorentz forces affecting carrier trajectories between scatterings events. The estimated contributions of these two mechanisms are similar. The proposed structure is a good candidate for application in CMOS technology-compatible magnetic- and electric-field sensors and switching devices.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khalyapin D. L., Kim J., Stolyar S. V., Turpanov I. A., Kim P. D., Kim I.
Заглавие : Formation of 4H-closely packed structure in thin films of metastable nanocrytalline Co13Cu87 alloy
Разночтения заглавия :авие SCOPUS: Formation of 4H-closely packed structure in thin films of metastable nanocrystalline Co13Cu87 alloy
Место публикации : Solid State Commun. - 2003. - Vol. 128, Is. 6-7. - P.209-212. - ISSN 0038-1098, DOI 10.1016/j.ssc.2003.08.018
Примечания : Cited References: 10
Предметные рубрики: MAGNETORESISTANCE
Ключевые слова (''Своб.индексиров.''): nanocrystalline materials--metals--metastable solid solution--ion impact--metals--nanocrystalline materials--metastable solid solution--ion impact--crystal lattices--nanostructured materials--solid solutions--thin films--ion polishing--cobalt alloys
Аннотация: The crystal structure of the thin films of metastable Co13Cu87 alloy prepared by magnetron sputtering was investigated by transmission electron microscope. As-deposited films have a nanocrystal structure with an fcc lattice. As a result of the prolonged ion polishing with a beam of Ar ions with the energy of 4.7 keV, the four-layer 4H dhcp structure was formed. (C) 2003 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Tarasov I. A., Visotin M. A., Varnakov S. N., Ovchinnikov S. G., Farle M.
Заглавие : 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
Коллективы : International workshop on functional MAX-materials, Kirensky Institute of Physics
Место публикации : International workshop on functional MAX-materials (1st FunMax). - 2020. - P.11
Примечания : 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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tarasov A. S., Visotin M. A., Varnakov S. N., Ovchinnikov S. G.
Заглавие : 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
Коллективы : International Online Workshop on the properties of Functional MAX-materials, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : 1st FunMAX Workshop 2020: Book of Abstracts/ , Ин-т физики им. Л.В. Киренского. - 2020. - P11
Примечания : 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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mironov V. L., Muzalevskiy K. V.
Заглавие : Impact of a freezing topsoil on determining the Arctic tundra surface deformation using InSAR
Коллективы : International Siberian Conference on Control and Communications
Место публикации : Int. Sib. Conf. on Control and Communicat.: Proc.: IEEE, 2013. - Ст.6693624. - ISSN 978-1-4799-1062-5, DOI 10.1109/SIBCON.2013.6693624. - ISSN 978-147991060-1
Примечания : Cited References: 8
Ключевые слова (''Своб.индексиров.''): sar interferometry (insar)--smap--alos--permafrost--arctic tundra soil--active layer--freezing--thawing--soil temperature
Аннотация: In this paper, we study the effect of the layered structure of the active topsoil of the Arctic tundra during freezing on the error of determining surface deformation. A simple Bragg scattering model was used for surface scattering modeling. The simulation was performed in the L-band for future radar missions SMAP and ALOS-2. The soil permittivity is calculated using the temperature-dependent generalized refractive mixing dielectric model for the organic rich soil sample collected in North Slope, Alaska (68 degrees 38'N, 149 degrees 35'W). This model predicts the complex dielectric constant of moist soil both thawed and frozen at temperatures from -30 degrees C to +25 degrees C and moistures from 0 to 0.94 g/g. It is shown that the error of determining soil surface deformation, induced by processes of freezing of the permafrost active layer, does not exceed 1.5 cm.
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Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Edelman I. S., Ovchinnikov S. G., Thakur A., Thakur P.
Заглавие : Impact of nano-biomaterials on the world
Колич.характеристики :34 pp.
Место публикации : Integrated nanomaterials and their applications/ ed.: D. Suhag [et al.]: Springer, 2023. - Chapt. 22. - P.1-34
Примечания : Cited References: 77
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Narkevich N., Vlasov I., Volochaev M. N., Gomorova Y., Mironov Y., Panin S., Berto F., Maksimov P., Deryugin E.
Заглавие : Low-temperature deformation and fracture of Cr-Mn-N stainless steel: Tensile and impact bending tests
Место публикации : Metals. - 2023. - Vol. 13, Is. 1. - Ст.95. - ISSN 20754701 (eISSN), DOI 10.3390/met13010095
Примечания : Cited References: 41. - The research was funded by RSF, project No. 22-29-00438. The low-temperature tensile tests were carried out in accordance with the state assignment for the ISPMS SB RAS, project No. FWRW-2021-0009
Аннотация: The paper presents the results of tensile and impact bending tests of 17%Cr-19%Mn-0.53%N high-nitrogen austenitic stainless steel in temperatures ranging from −196 to 20 °C. The steel microstructure and fracture surfaces were investigated using transmission and scanning electron microscopes, as well as X-ray diffraction analysis. The steel experiences a ductile-to-brittle transition (DBT); however, it possessed high tensile and impact strength characteristics, as well as the ductile fracture behavior at temperatures down to −114 °C. The correspondence between γ–ε microstructure and fracture surface morphologies was revealed after the tensile test at the temperature of −196 °C. In this case, the transgranular brittle and layered fracture surface was induced by ε-martensite formation. Under the impact bending test at −196 °C, the brittle intergranular fracture occurred at the elastic deflection stage without significant plastic strains, which preceded a failure due to the high internal stresses localized at the boundaries of the austenite grains. The stresses were induced by: (i) segregation of nitrogen atoms at the grain boundaries and in the near-boundary regions, (ii) quenching stresses, and (iii) reducing fcc lattice volume with the test temperature decrease and incorporation of nitrogen atoms into fcc austenite lattice. Anisotropy of residual stresses was revealed. This was manifested in the localization of elastic deformations of the fcc lattice and, consequently, the stress localization in 100-oriented grains; this is suggested to be the reason of brittle cleavage fracture.
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