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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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Effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular nanocomposites / E. A. Denisova [et al.] // Bull. Russ. Acad. Sci. Phys. - 2016. - Vol. 80, Is. 11. - P. 1332-1334, DOI 10.3103/S1062873816110186. - Cited References: 31. - This work was supported by the Russian Foundation for Basic Research, project nos. 15-08-06673, 16-03-00256, and RFBR-KRFS 15-42-04171. . - ISSN 1062-8738
Кл.слова (ненормированные):
Annealing -- Magnetic properties -- Multilayers -- Spin waves -- Sputtering -- Concentration dependence -- Effect of annealing -- Granular composites -- Ion-beam sputtering -- Metal phase -- Spin wave resonances -- Ion beams
Аннотация: The effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular composites fabricated via ion-beam sputtering is investigated. It is established that annealing changes the concentration dependences of the ferromagnetic resonance field and linewidth and shifts the regions of metal phase concentration corresponding to the spin-wave resonance. © 2016, Allerton Press, Inc.

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Публикация на русском языке Влияние термической обработки на магнитные свойства гранулированных нанокомпозитов (Co40Fe40B20)x(SiO2)1-x [Текст] / Е. А. Денисова [и др.] // Изв. РАН. Сер. физич. - 2016. - Т. 80 № 11. - С. 1500-1503

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Voronezh State Technical University, Voronezh, Russian Federation

Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Chekanova, L. A.; Чеканова, Лидия Александровна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Kalinin, Y. E.; Sitnikov, A. V.
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Extraordinary time-depended processes in the parametric interaction of counter-propagating waves / V. A. Tkachenko [et al.] // Int. Conf. Laser Optics, LO 2016 : Proceedings : IEEE, 2016. - PR838, DOI 10.1109/LO.2016.7549869. - Cited References:3 . - ISBN 9781467397353

РУБ Engineering, Electrical & Electronic + Optics

Кл.слова (ненормированные):
negative refractive index and negative dispersion -- backward electromagnetic waves -- transient parametric processes -- counter-propagating waves
Аннотация: Three-wave mixing of ordinary and backward electromagnetic waves in the pulsed regime is investigated. It is shown that opposite direction of phase velocity and energy flux in the backward wave gives rise to extraordinary transient processes in the greatly enhanced optical parametric amplification and frequency-shifting nonlinear reflectivity. The discovered transients resemble time-delayed response of an oscillator on the pulsed excitation in the vicinity of its resonance. © 2016 IEEE.

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Доп.точки доступа:
Tkachenko, V. A.; Popov, A.K.; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; International Conference on Laser Optics(17 ; 27 June-1 July 2016 ; Petersburg, Russia); "Оптика лазеров", международная конференция(17 ; 2016; 27 июня - 1 июля ; Санкт-Петербург)
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Bulgakov, E. N.
Propagating Bloch bound states with orbital angular momentum above the light line in the array of dielectric spheres / E. N. Bulgakov, A. F. Sadreev // J. Opt. Soc. Am. A. - 2017. - Vol. 34, Is. 6. - P. 949-952, DOI 10.1364/JOSAA.34.000949. - Cited References:37. - Ministry of Education and Science of the Russian Federation (Minobrnauka) (N 3.1845.2017); Russian Foundation for Basic Research (RFBR) (16-02-00314). . - ISSN 1084-7529. - ISSN 1520-8532

РУБ Optics
Рубрики:
GUIDED-WAVES
   CONTINUUM
   BEHAVIOR
   GRATINGS
Аннотация: We present propagating Bloch bound states in the radiation continuum with orbital angular momentum in an infinite linear periodical array of dielectric spheres. The bound states in the continuum demonstrate a giant Poynting vector spiraling around the array. They can be excited by a plane wave with incident linear polarization with a small tilt relative to the axis of the array.

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Держатели документа:
RAS, Kirensky Inst Phys, Fed Res Ctr, KSC,SB, Krasnoyarsk 660036, Russia.
Siberian State Aerosp Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Ministry of Education and Science of the Russian Federation (Minobrnauka) [N 3.1845.2017]; Russian Foundation for Basic Research (RFBR) [16-02-00314]
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Popov, A. K.
Hyperbolic carbon nanoforest for phase matching of ordinary and backward electromagnetic waves: Second harmonic generation / A. K. Popov, I. S. Nefedov, S. A. Myslivets // ACS Photonics. - 2017. - Vol. 4, Is. 5. - P. 1240-1244, DOI 10.1021/acsphotonics.7b00146. - Cited References: 14. - This material is based on work supported in part by the U.S. Army Research Laboratory through the U.S. Army Research Office under Grant Number W911NF-14-1-0619 and by the Russian Foundation for Basic Research under Grant RFBR 15-02-03959A. . - ISSN 2330-4022
Кл.слова (ненормированные):
backward electromagnetic waves -- carbon nanotubes -- hyperbolic metamaterials -- second harmonic generation
Аннотация: We show that a deliberately engineered dispersive metamaterial slab can enable the coexistence and phase matching of ordinary fundamental and contra-propagating backward second harmonic electromagnetic waves. Energy flux and phase velocity are contra-directed in the backward waves, which is the extraordinary phenomenon that gives rise to unique nonlinear optical propagation processes. We demonstrate that frequencies, phase, and group velocities, as well as the losses inherent to the guided electromagnetic modes supported by such metamaterial, can be tailored to maximize the conversion of frequencies and to reverse the propagation direction of the generated second harmonic wave. Such a possibility, which is of paramount importance for nonlinear photonics, is proven using a numerical model describing the hyperbolic metamaterial made of carbon nanotubes standing on the metal surface. Extraordinary properties of the backward-wave second harmonic generation in the reflection direction and of the corresponding frequency doubling metareflector in the THz are investigated with a focus on the pulsed regime. © 2017 American Chemical Society.

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Держатели документа:
Birck Nanotechnology Center, Purdue University, West Lafayette, IN, United States
Aalto University, School of Electrical Engineering, P.O. Box 13000, Aalto, Finland
Laboratory Nanooptomechanics, ITMO University, St. Petersburg, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович
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Ignatchenko, V. A.
Green's functions of polaritons in a medium with zero-mean inhomogeneous coupling parameter / V. A. Ignatchenko, D. S. Polukhin // Physics Procedia : Elsevier, 2017. - Vol. 86. - P. 117-121, DOI 10.1016/j.phpro.2017.01.031. - Cited References: 10
Кл.слова (ненормированные):
electromagnetic waves -- optical phonons -- crossing resonance -- polaritons -- Green's functions -- self-consistent approximation
Аннотация: Dynamic susceptibilities (Green's functions) of the interacting electromagnetic waves G”e(ω) and optical phonons G”u(ω) in a medium with zero-mean inhomogeneous coupling parameter have been considered. The calculation was performed using a self-consistent approximation for the two stochastically interacting wave fields. It is shown that on the tops of the resonance maxima of the imaginary parts of the Green functions the fine structure is formed: a minimum (dip) on the top of G”e(ω) and narrow maximum (peak) on the top of G”u(ω). With increasing the correlation wavenumber of inhomogeneities kc (i.e., with decreasing the size of inhomogeneities), the width of the peak on G”u(ω) decreases, and two resonance maxima in the function G”e(ω) are formed. Because of the large difference in the speeds of light and optical phonons, the fine structure of the polaritons is manifested itself more clearly and saved to a much larger values of kc, than for the studied earlier crossing resonance of spin and elastic waves.

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Доп.точки доступа:
Polukhin, D. S.; Полухин, Дмитрий Сергеевич; Игнатченко, Вальтер Алексеевич; International Conference on Photonics of Nano- and Bio-Structures(2015 ; 19-20 June ; Tomsk); International Conference on Photonics of Nano- and Bio-Structures(2015 ; 19-20 June ; Tomsk)
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Three-wave mixing of ordinary and backward electromagnetic waves: Extraordinary transients in the nonlinear reflectivity and parametric amplification / V. V. Slabko [et al.] // Opt. Lett. - 2016. - Vol. 41, Is. 17. - P. 3976-3979, DOI 10.1364/OL.41.003976 . - ISSN 0146-9592
Кл.слова (ненормированные):
Amplification -- Circular waveguides -- Electromagnetic waves -- Mixing -- Nonlinear optics -- Phase matching -- Reflection -- Backward waves -- Energy fluxes -- Non-linear reflectivity -- Optical parametric amplification -- Parametric amplification -- Three wave mixing -- Transient process -- Optical parametric amplifiers
Аннотация: Three-wave mixing of ordinary and backward electromagnetic waves in a pulsed regime is investigated in the metamaterials that enable the coexistence and phase-matching of such waves. It is shown that the opposite direction of phase velocity and energy flux in backward waves gives rise to extraordinary transient processes due to greatly enhanced optical parametric amplification and frequency up- and down-shifting nonlinear reflectivity. The differences are illustrated through comparison with the counterparts in ordinary, co-propagating settings. © 2016 Optical Society of America.

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Держатели документа:
Siberian Federal University, 79 Svobodny Av., Krasnoyarsk, Russian Federation
Birck Nanotechnology Center, Purdue University, 1205 W State St., West Lafayette, IN, United States
L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Slabko, V. V.; Слабко, Виталий Васильевич; Popov, A. K.; Tkachenko, V. A.; Myslivets, S. A.; Мысливец, Сергей Александрович
}
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Low-temperature electrical properties of Me(x)V(1-x)S / G. A. Petrakovskii [и др.] // Fiz. Tverd. Tela. - 1996. - Vol. 38, Is. 4. - P. 1012-1016. - Cited References: 9 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
DENSITY WAVES

WOS
Держатели документа:
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
KRASNOYARSK MIN TECHNOL INST,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН

Доп.точки доступа:
Petrakovskii, G. A.; Loseva, G. V.; Mukoed, G. M.; Kiselev, N. I.; Baranov, A. V.
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POLSKII, A. I.
DIRECT AND REVERSE TRANSFORMATIONS OF THE SURFACE ACOUSTIC-WAVES, USING PERIODIC MAGNETIC-STRUCTURES / A. I. POLSKII, V. V. VERSHININ, V. Y. YAKOVCHUK // Zhurnal Tek. Fiz. - 1980. - Vol. 50, Is. 10. - P. 2236-2238. - Cited References: 4 . - ISSN 0044-4642

РУБ Physics, Applied

WOS
Доп.точки доступа:
VERSHININ, V. V.; YAKOVCHUK, V. Y.
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10.

Ignatchenko, V. A.
Stochastic magnetic-structure and spin-waves in amorphous ferromagnetic substance / V. A. Ignatchenko, R. S. Iskhakov // Izvestiya Akademii Nauk SSSR Seriya Fizicheskaya. - 1980. - Vol. 44, Is. 7. - P. 1434-1437. - Cited References: 6 . - ISSN 0367-6765

РУБ Physics, Multidisciplinary

WOS
Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Игнатченко, Вальтер Алексеевич
}
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