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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Aleksandrovsky A. S., Vyunishev A. M., Zaitsev A. I., Trabs P., Noack F., Petrov V., Slabko V. V., Radionov N. V.
Заглавие : Nonlinear photonic crystals of strontium tetraborate: properties and radiation conversion to the VUV
Коллективы : "Modern problems of laser physics", International symposium
Место публикации : VI International symposium on modern problems of laser physics (MPLP'2013): [Proceedings]. - 2013. - Ст.B1. - P.197
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrovsky A. S., Vyunishev A. M., Zaitsev A. I., Ikonnikov A. A., Pospelov G. I., Slabko V. V.
Заглавие : Phase matched conversion of radiation in nonlinear photonic crystals of strontium tetraborate
Коллективы : International Conference on Coherent and Nonlinear Optics
Место публикации : Proc. of SPIE: SPIE-Int. Soc. Optical Engineering, 2011. - Vol. 7993. - Ст.799302. - P. - ISSN 0277-786X, DOI 10.1117/12.872943. - ISSN 978-0-81948-566-3
Примечания : Cited References: 9
Предметные рубрики: OPTICAL CRYSTALS
Ключевые слова (''Своб.индексиров.''): nonlinear photonic crystal--strontium tetraborate--second harmonic generation--random quasi phase matching
Аннотация: Random quasi-phase-matched frequency doubling of fs pulses to the deep UV was obtained in 1D nonlinear photonic crystal (NPC) of strontium tetraborate. Tuning range of generated radiation is from 187.5 to 215 nm. The spectrum of generated radiation consists from series of peaks with the width of order of 1 angstrom. These peaks are the manifestation of the NPC band structure. Using fs oscillator as the fundamental radiation source, maximum average power of generated radiation is of order 1 mu W, the enhancement factor with respect to monodomain sample being of order of several hundred. The red rotational shift of NPC band structure is experimentally demonstrated.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Trofimova N. N., Veligzhanin A. A., Murzin V.Y, Chernyshov A. A., Khramov E. V., Zabluda V. N., Edel'man I. S., Slovokhotov Y. L., Zubavichus Y. V.
Заглавие : Structural diagnostics of functional nanomaterials with the use of X-ray synchrotron radiation
Место публикации : Nanotechnologies in Russia. - 2013. - Vol. 8, Is. 5-6. - P.396-401. - ISSN 1995-0780, DOI 10.1134/S1995078013030191
Ключевые слова (''Своб.индексиров.''): experimental facilities--functional nano materials--kurchatov synchrotron radiation--magnetic nano-particles--research capabilities--structural diagnostics--structural elements--x-ray synchrotron radiation--nanostructured materials--synchrotron radiation
Аннотация: An experimental facility for the complex X-ray diagnostics of functional nanomaterials (Structural Materials Science beamline) installed at the Kurchatov Synchrotron Radiation Center is presented. The key structural elements of the beamline are described. The research capabilities of the facility are demonstrated by the example of transparent magnets and glasses with magnetic nanoparticles, which are promising for the design of magneto-optical data storage and spintronics devices.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Трофимова Н. Н., Велигжанин А. А., Мурзин В. Ю., Чернышов А. А., Храмов Е. В., Заблуда, Владимир Николаевич, Эдельман, Ирина Самсоновна, Словохотов Ю. Л., Зубавичус Я. В.
Заглавие : Структурная диагностика функциональных наноматериалов с использованием рентгеновского синхротронного излучения
Место публикации : Рос. нанотехнологии. - М.: Парк-медиа, 2013. - Т. 8, № 5-6. - С. 108-112
Аннотация: Представлена экспериментальная установка комплексной рентгеновской диагностики функциональных наноструктурированых материалов – станция «Структурное материаловедение», установленная на Курчатовском источнике синхротронного излучения. Дано описание ключевых конструктивных элементов станции. Исследовательские возможности станции продемонстрированы на примере «прозрачных магнитов» – стекол с магнитными наночастицами, перспективных для дизайна устройств магнитооптического хранения информации и спинтроники.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Volkov N. V., Rautskii M. V., Eremin E. V., Patrin G. S., Kim P. D., Lee C. G.
Заглавие : Response of a manganite-based magnetic tunnel structure to microwave radiation
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P.125-128. - ISBN 978, DOI 10.4028/www.scientific.net/SSP.190.125. - ISBN 9783037854365
Ключевые слова (''Своб.индексиров.''): magnetic tunnel structure--microwave detection effect--spintronics--current flowing--current-in-plane geometry--magnetic tunnels--magnetization dynamics--microwave detection--non-linearity--rectification effects--spin-polarized currents--voltage signals--magnetic materials--magnetoelectronics--manganese oxide--microwaves--magnetism
Аннотация: We demonstrate that a magnetic tunnel structure irradiated by microwaves can generate a significant voltage signal due to the rectification effect. The measurements were carried out using current-in-plane geometry with a current flowing parallel to the interfaces in the structure. A value of the microwave-induced voltage strongly depends on a bias current and can be driven by a magnetic field. The rectification effect is discussed both in "Classical" terms of nonlinearity of the current-voltage characteristic and using a mechanism that involves the interplay between the spinpolarized current and magnetization dynamics in the magnetic tunnel structure. В© (2012) Trans Tech Publications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Goryainov S. V., Krylov A. S., Pan Y. M., Madyukov I. A., Smirnov M. B., Vtyurin A. N.
Заглавие : Raman investigation of hydrostatic and nonhydrostatic compressions of OH- and F-apophyllites up to 8 GPa
Место публикации : J. Raman Spectrosc.: WILEY-BLACKWELL, 2012. - Vol. 43, Is. 3. - P.439-447. - ISSN 0377-0486, DOI 10.1002/jrs.3049
Примечания : Cited References: 18. - This work was supported by the Siberian Division of RAS (Integration Project 109), the Russian Ministry of Science and Education and the CRDF (BRHE - REC-008 grant) and the Russian Foundation for Basic Research (RFBR-11-05-01121).
Предметные рубрики: RADIATION-INDUCED DEFECTS
ALPHA-QUARTZ
ROOM-TEMPERATURE
MEMORY GLASS
PRESSURE
FLUORAPOPHYLLITE
PHASE
MODEL
Ключевые слова (''Своб.индексиров.''): raman spectroscopy--high pressure--apophyllite--layer silicate--amorphization
Аннотация: Layer silicates F- and OH-apophyllites, KCa4Si8O20(F, OH)·8H2O, have been investigated by Raman spectroscopy at hydrostatic and nonhydrostatic pressures up to 8 GPa in diamond anvil cells using a 4 : 1 methanol–ethanol mix as pressure-transmitting medium. Our experiments show that at hydrostatic compression, apophyllites retain their crystalline states (i.e. no amorphization) up to 5 GPa. The wavenumbers of most bands exhibit linear dependences on pressure, except for a few ones, e.g. at 162 and 3565 cm–1 in OH-form (160.5 and 3558 cm–1 in F-form) that show nonlinear dependences. Nonhydrostatic compression with additional uniaxial loading induces amorphization of apophyllites. The majority of the bands in OH-apophyllite decreases markedly in intensity and shows considerable broadening under nonhydrostatic compression up to 3–6 GPa. In addition, the wavenumbers of several bands at nonhydrostatic compression exhibit considerable nonlinear dependences on pressure with strong hysteresis. These bands are mainly associated with vibrations of the interlayer ions and molecules and also of stretching and bending silicate sheets, hence being highly sensitive to the interlayer distance. Finally, we have calculated the lattice dynamics of F-apophyllite and interpreted the majority of bands, and these data are used to explain the complex baric behavior of the bands. Copyright © 2011 John Wiley & Sons, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tambasov I. A., Myagkov V. G., Ivanenko A. A., Bykova L. E., Yozhikova E. V., Maksimov I. A., Ivanov V. V.
Заглавие : Effect of exposure to optical radiation and temperature on the electrical and optical properties of In2O3 films produced by autowave oxidation
Коллективы : Ministry of Education and Science of the Russian Federation [14.513.11.0023]
Место публикации : Semiconductors: MAIK Nauka-Interperiodica / Springer, 2014. - Vol. 48, Is. 2. - P.207-211. - ISSN 1063-7826, DOI 10.1134/S1063782614020286. - ISSN 1090-6479
Примечания : Cited References: 42. - This study was supported by the Ministry of Education and Science of the Russian Federation, Federal Targeted Program "Research and Development in Priority Fields of Development of the Science and Technology Complex of Russia for 2007-2013", state contract no. 14.513.11.0023.
Предметные рубрики: GAS SENSOR RESPONSE
INDIUM OXIDE-FILMS
THIN-FILMS
HIGH-PERFORMANCE
TIN OXIDE
TRANSPARENT CONDUCTORS
SUBSTRATE-TEMPERATURE
ROOM-TEMPERATURE
TRANSISTORS
PHOTOREDUCTION
Аннотация: Indium-oxide films are synthesized by the autowave-oxidation reaction. It is shown that, upon exposure to optical radiation, the resistance of the films sharply decreases and the maximal relative change in the resistance is 52% at room temperature. Two resistance relaxation rates after termination of the irradiation, 15 Omega s(-1) during the first 30 s and 7 Omega s(-1) over the remaining time, are determined. The data of infrared spectroscopy of the films show that exposure to optical radiation induces a 2.4% decrease in the transmittance at a wavelength of 6.3 mu m. It is found that, after termination of the irradiation, the transmittance gradually increases with a rate of 0.006% s(-1). It is suggested that photoreduction is the dominant mechanism responsible for changes in the electrical and optical properties of the In2O3 films.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkov N. V., Eremin E. V., Tarasov A. S., Rautskii M. V., Varnakov S. N., Ovchinnikov S. G., Patrin G. S.
Заглавие : Magnetic tunnel structures: Transport properties controlled by bias, magnetic field, and microwave and optical radiation
Коллективы : Moscow International Symposium on Magnetism
Место публикации : J. Magn. Magn. Mater.: Elsevier Science BV, 2012. - Vol. 324, Is. 21. - P.3579-3583. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2012.02.095
Примечания : Cited References: 15. - This study was supported by the RFBR, project no. 11-02-00367-a; the Presidium of the Russian Academy of Sciences, project no. 21.1; the Division of Physical Sciences of the Russian Academy of Sciences, project no. 2.4.4.1; the Siberian Branch of the Russian Academy of Sciences, integration projects nos. 5, 22 and 134, and the Federal Program (State contract no. NK-556P_15).
Ключевые слова (''Своб.индексиров.''): spintronics--magnetic tunnel junction--high-frequency rectification--photoelectric effect
Аннотация: Different phenomena that give rise to a spin-polarized current in some systems with magnetic tunnel junctions are considered. In a manganite-based magnetic tunnel structure in CIP geometry, the effect of current-channel switching was observed, which causes bias-driven magnetoresistance, rf rectification, and the photoelectric effect. The second system under study, ferromagnetic/insulator/semiconductor, exhibits the features of the transport properties in CIP geometry that are also related to the current-channel switching effect. The described properties can be controlled by a bias, a magnetic field, and optical radiation. At last, the third system under consideration is a cooperative assembly of magnetic tunnel junctions. This system exhibits tunnel magnetoresistance and the magnetic-field-driven microwave detection effect. (C) 2012 Elsevier BY. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkov N. V., Rautskiy M. V., Eremin E. V., Patrin G. S., Kim P. D., Lee C. G.
Заглавие : Response of a manganite-based magnetic tunnel structure to microwave radiation
Место публикации : J. Phys. D. - 2012. - Vol. 45, Is. 25. - Ст.255301. - ISSN 0022-3727, DOI 10.1088/0022-3727/45/25/255301
Примечания : Cited References: 20. - This study was supported by the Russian Foundation for Basic Research, project no 11-02-00367-a; the Presidium of the Russian Academy of Sciences, program Fundamentals for Basic Research of Nanotechnology and Nanomaterials, project no 21.1; the Division of Physical Sciences of the Russian Academy of Sciences, program Spin-Dependent Effects in Solids and Spintronics, project no 2.4.4.1; the Siberian Branch of the Russian Academy of Sciences, integration projects nos 5 and 134; and the Federal target program Scientific and Pedagogical Personnel of Innovative Russia (State contract no NK-556P_15).
Предметные рубрики: IDENTICAL METALS
JUNCTIONS
RECTIFICATION
SPINTRONICS
MECHANISM
Аннотация: We demonstrate that a magnetic tunnel structure irradiated by microwaves can generate a typical voltage signal due to the rectification effect. We performed measurements in current-in-plane geometry when a current flows parallel to the interfaces in the structure. The value of the microwave-induced voltage strongly depends on the bias current and can be driven by a magnetic field. The rectification effect is discussed both in classical terms of nonlinearity of the current-voltage characteristics and within the mechanism involving the interplay between the spin-polarized current and the magnetization dynamics in the magnetic tunnel structure.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Slabko V. V., Tsipotan A. S., Gerasimova M. A., Aleksandrovsky A. S.
Заглавие : Self-organized aggregation simulation of resonant nanoparticles in a laser field
Коллективы : "Оптика лазеров", Международная конференция, "Laser Optics", International conference
Место публикации : 16th International Conference Laser Optics (LO 2014): Proceedings: IEEE Computer Society, 2014. - Ст.ThR6-40. - 6886372. - ISBN 978-1-4799-3884-1, DOI 10.1109/LO.2014.6886372
Примечания : Cited References: 2
Предметные рубрики: Engineering, Electrical & Electronic
Optics
Physics, Applied
Ключевые слова (''Своб.индексиров.''): dipole-dipole interaction--interaction of laser radiation with matter--nanoparticles--nanostructures
Аннотация: Self-organized aggregation of nanoparticles in external resonant laser field is considered using Brownian dynamics model. Formation probabilities are calculated for the pair of particles in dependence on laser wavelength and mutual orientation of particles. Times required for aggregation are calculated. Possibility of efficient aggregation using pulsed laser is deduced. © 2014 IEEE.
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