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Transport and magnetic properties of Y3/4Lu1/4Ba2Cu3O7+Y3Fe5O12 composites representing a Josephson-type superconductor-ferrimagnet-superconductor weak-link network / K. A. Shaikhutdinov [et al.] // Phys. Solid State. - 2003. - Vol. 45, Is. 10. - P. 1866-1873, DOI 10.1134/1.1620087. - Cited References: 36 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
RESISTIVE PROPERTIES
   JUNCTION NETWORK
   SYSTEM
   TRANSITION
   CURRENTS
   VOLTAGE
   STATE
   FIELD
Аннотация: Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 composites with different volume ratios of the starting components were synthesized. The composites model an S-F-S Josephson junction network, where S stands for a superconductor and F, for a ferrimagnet. A study of the transport characteristics of the composites revealed that the temperature behavior of the electrical resistivity rho(T) below the superconducting transition point T-C is different in two regions separated by a temperature T-m. Below T-m, the current-voltage characteristics of the composites are nonlinear, while in the interval from T-C to T-m the values of rho(T) do not depend on the transport current j and magnetic field H. This behavior of rho(T, j ) and rho(T, H) is assigned to specific features of the tunneling of superconducting carriers through the ferrimagnetic layers separating HTSC grains in the composite. Magnetic measurements showed the diamagnetic response of HTSC grains to be lower in composites with a ferrimagnet. (C) 2003 MAIK "Nauka / Interperiodica".

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

Доп.точки доступа:
Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
}
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Thermal expansion of (Ba1-x La (x) )Ti1-x/4O3 solid solutions / M. V. Gorev [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 4. - P. 790-796, DOI 10.1134/S106378340904026X. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools of the Russian Federation (grant NSh-1011.2008.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CERAMICS
   BATIO3
   BA(TI1-XZRX)O-3
   FERROELECTRICS
   CONDUCTIVITY
   BEHAVIOR
   SYSTEM
   PHASE
   HEAT
Аннотация: Deformation and the thermal expansion coefficient of ceramic samples of (Ba1 - x La (x) )Ti1 - x/4O3 solid solutions (x = 0, 0.026, 0.036, 0.054) were studied in the temperature range 120-700 K. Based on an analysis of the data obtained, the temperature-composition phase diagram is refined, and the temperature dependence of the polarization is calculated. The results are discussed in combination with the dielectric measurement data.

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Держатели документа:
[Gorev, M. V.
Flerov, I. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Sciau, Ph.] Univ Toulouse, CNRS, CEMES, Toulouse, France
[Guillemet-Fritsch, S.] Univ Toulouse, CNRS, INPT, CIRIMAT,UPS, Toulouse, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk 660041, Russian Federation
CEMES-CNRS, Universite de Toulouse, Toulouse, France
CIRIMAT CNRS/UPS/INPT, Universite de Toulouse, Toulouse, France

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Sciau, P.; Guillemet-Fritsch, S.; Russian Foundation for Basic Research [07-02-00069]; Russian Federation [NSh-1011.2008.2]
}
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    The exchange interaction effects on magnetic properties of the nanostructured CoPt particles / S. V. Komogortsev [et al.] // J. Magn. Magn. Mater. - 2016. - Vol. 401. - P. 236-241, DOI 10.1016/j.jmmm.2015.10.041. - Cited References: 55. - The work has been partially supported by RFBR Grants 15-08-06673, 14-03-00411, 14-03-00129, 15-42-0417115 and it is partly performed in Siberian Federal University within the state contract of the Russian Federation Ministry of Education and Science for 2014-2016 (project number 1792) . - ISSN 0304-8853
   Перевод заглавия: Влияния обменного взаимодействия на магнитные свойства наноструктурированных частиц CoPt

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
CLUSTER BEAM DEPOSITION
   BULK MAGNETS
   NANOCRYSTALLINE FERROMAGNETS
   REMANENCE ENHANCEMENT
   THIN-FILMS
   COERCIVITY
   MICROSTRUCTURE
   NANOPARTICLES
   IRON
   SYSTEM
Аннотация: Various manifestations of the exchange interaction effects in magnetization curves of the CoPt nanostructured particles are demonstrated and discussed. The inter-grain exchange constant A in the sponge-like agglomerates of crystallites is estimated as A=(7±1) pJ/m from the approach magnetization to saturation curves that is in good agreement with A=(6.6±0.5) pJ/m obtained from Bloch T 3/2 law. The fractal dimensionality of the exchange coupled crystallite system in the porous media of the disordered CoPt alloy d=(2.60±0.18) was estimated from the approach magnetization to saturation curve. Coercive force decreases with temperature as Hc~T 3/2 which is assumed to be a consequence of the magnetic anisotropy energy reduction due to the thermal spin wave excitations in the investigated CoPt particles. © 2015 Elsevier B.V. All rightsreserved.
Демонстрируются и обсуждаются различные проявления эффектов обменного взаимодействия в кривых намагниченности наноструктуированных частиц CoPt. Межзеренная обменная константа А в агломератах губчатой структуры кристаллитов оценивается как /A/=(7±1) pJ/m из кривых приближения намагниченности к насыщению, это значение находится в хорошем согласии с /A/=(6.6±0.5) pJ/m, полученным из закона /T/. /2 Блоха. Размерность фрактала обменно-соединенных кристаллических систем в пористой среды неупорядоченного сплава CoPt /d/=(2.60±0.18) оценивалась из кривых приближения намагниченности к насыщению. Коэрцитивная сила уменьшается с температурой по закону /H_c /~/T/. /2 , который, как предполагается, есть следствие уменьшения энергии магнитной анизотропии из-за теплового возбуждения спиновых волн в изучаемых частицах CoPt.

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Держатели документа:
Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk, Russian Federation
Novosibirsk State University, Novosibirsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Zimin, A. A.; Зимин, А. А.; Filatov, E. Y.; Korenev, S. V.; Shubin, Yu. V.; Chizhik, N. A.; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Eremin, E. V.; Еремин, Евгений Владимирович
}
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    Synthesis and electronic properties of β-RbNd(MoO4)2 / V. V. Atuchin [et al.] // Asian J. Chem. - 2014. - Vol. 26, No. 5. - P. 1284-1286, DOI 10.14233/ajchem.2014.17209. - Cited References: 26. - This study is partly supported by by the Ministry of Education and Science of the Russian Federation. . - ISSN 0970-7077
   Перевод заглавия: Синтез и электронные свойства бета-RbNd(MoO4)2

РУБ Chemistry, Multidisciplinary
Рубрики:
UP-CONVERSION PHOTOLUMINESCENCE
   VIBRATIONAL PROPERTIES
   CRYSTAL-STRUCTURE
   PARTICLES
   MOLYBDATE
   SPECTROSCOPY
   SYSTEM
   ER3+
Кл.слова (ненормированные):
β-RbNd(MoO4)2 -- Electronic structure -- Ab initio calculations -- X-Ray photoelectron spectroscopy
Аннотация: The electronic structure of β-RbNd(MoO4)2 has been evaluated from experimental and theoretical points of view. For the molybdate, X-ray photoelectron valence-band spectra have been measured. The total and partial densities of states of the constituent atoms of β-RbNd(MoO4)2 have been calculated using the FP-LAPW method. The FP-LAPW data reveal that main contributors in the valence-band region of β-RbNd(MoO4)2 are the Rb 4p-, Nd 4f-, Mo 4d- and O 2p-like states.

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Держатели документа:
SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia
Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, UA-03142 Kiev, Ukraine
SB RAS, Lab Oxide Syst, Baikal Inst Nat Management, Ulan Ude 670047, Russia
SB RAS, Lab Crystal Phys, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Hanseo Univ, Dept Adv Mat Sci & Engn, Seosan 356706, South Korea

Доп.точки доступа:
Atuchin, V. V.; Bekenev, V. L.; Chimitova, O. D.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarov, B. G.; Базаров Б. Г.; Bazarova, J. G.; Базарова Ж. Г.; Khuzhum, O. Y.; Lim, C. S.
}
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Bulgakov, E. N.
Symmetry breaking in a T-shaped photonic waveguide coupled with two identical nonlinear cavities / E. . Bulgakov, A. . Sadreev // Phys. Rev. B. - 2011. - Vol. 84, Is. 15. - Ст. 155304, DOI 10.1103/PhysRevB.84.155304. - Cited References: 40. - A.S is grateful to Boris Malomed for fruitful discussions about symmetry breaking. The work is partially supported by RFBR grant 12-02-00483. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
MODE THEORY
   NUCLEAR REACTIONS
   UNIFIED THEORY
   SYSTEM
   FIBER
   RESONANCE
   DYNAMICS
   STATES
Аннотация: We consider light transmission in a T-shaped photonic waveguide coupled with two identical symmetrically positioned nonlinear microcavities. We present two types of symmetry breaking. The first one is a result of mixing of the symmetric input wave with antisymmetric bound states in the Fabry-Perot interferometer architecture. Similarly, the second mechanism of the symmetry breaking is the result of mixing the symmetrical input wave with the antibonding bound state in a straight waveguide coupled with two cavities positioned perpendicular to the waveguide. In both cases the mixing is due to nonlinearity. In turn, the symmetry-breaking solutions give rise to nonsymmetrical outputs in the T-shape waveguide. These effects are directly demonstrated by the electromagnetic field solutions which are complimented by coupled mode theory for the light transmission.

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Держатели документа:
[Bulgakov, Evgeny
Sadreev, Almas] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Bulgakov, Evgeny] Siberian State Aerosp Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk Rabochii, 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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Bulgakov, E. N.
Switching through symmetry breaking for transmission in a T-shaped photonic waveguide coupled with two identical nonlinear micro-cavities / E. . Bulgakov, A. . Sadreev // J. Phys.: Condens. Matter. - 2011. - Vol. 23, Is. 31. - Ст. 315303, DOI 10.1088/0953-8984/23/31/315303. - Cited References: 32 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
MODE THEORY
   NUCLEAR REACTIONS
   UNIFIED THEORY
   FIBER
   INSTABILITIES
   RESONANCE
   GRATINGS
   SYSTEM
   STATES
Кл.слова (ненормированные):
All-optical switching -- Anti-symmetric -- Central waveguides -- Coupled mode theory -- Input power -- Input pulse -- Mirror symmetry -- Nonlinear cavities -- Output waveguides -- Photonic waveguides -- Standing wave -- Symmetry-breaking -- Microcavities -- Mirrors -- Waveguides -- Light transmission
Аннотация: Using coupled mode theory we consider transmission in a T-shaped waveguide coupled with two identical symmetrically positioned nonlinear micro-cavities with mirror symmetry. For input power injected into the central waveguide we show the existence of a symmetry breaking solution which is a result of mixing of the symmetrical input wave with an antisymmetric standing wave in the Fabry-Perot interferometer. With growth of the input power, a feature in the form of loops arises in the solution which originates from bistability in the transmission in the output left/right waveguide coupled with the first/second nonlinear cavity. The domains of stability of the solution are found. The breaking of mirror symmetry gives rise to nonsymmetrical left and right outputs. We demonstrate that this phenomenon can be explored for all-optical switching of light transmission from the left output waveguide to the right one by application of input pulses.

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Держатели документа:
[Bulgakov, Evgeny
Sadreev, Almas] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Bulgakov, Evgeny] Siberian State Aerosp Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk Rabochii, Krasnoyarsk 31, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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Arkhipkin, V. G.
Switching from normal to anomalous dispersion in photonic crystal with Raman gain defect / V. G. Arkhipkin, S. A. Myslivets // Opt. Lett. - 2014. - Vol. 39, Is. 7. - P. 1803-1806, DOI 10.1364/OL.39.001803. - Cited References: 30. - This work was supported in part by the RAS Grants No. 24.29 and No. 24.31, by SB RAS Grants No. 43, No. 101, and by NSC of Taiwan and SB RAS through a joint project. . - ISSN 0146-9592. - ISSN 1539-4794

РУБ Optics
Рубрики:
FAST LIGHT-PROPAGATION
   SLOW LIGHT
   SUPERLUMINALITY
   AMPLIFIER
   CAVITY
   SYSTEM
   DELAY
Аннотация: Propagation of a light through a one-dimensional photonic crystal containing a defect layer doped with a Raman gain medium is discussed. We demonstrate all-optically controlled switching from normal to anomalous dispersion in such a structure. A group delay for the transmitted probe (Raman) pulse is investigated. We show that the group velocity of a Raman pulse can be tuned from subluminal to superluminal by varying the intensity of the pump field. (C) 2014 Optical Society of America

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Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
}
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Study of molecular mobility in ABF6-center-dot-6H2O crystal family / E. P. Zeer, O. V. Falaleev, Y. N. Ivanov, E. A. Petrakovskaya // Fiz. Tverd. Tela. - 1994. - Vol. 36, Is. 8. - P. 2210-2220. - Cited References: 21 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITIONS
NMR
SYSTEM

WOS

Доп.точки доступа:
Zeer, E. P.; Зеер, Эвальд Петрович; Falaleev, O. V.; Фалалеев, Олег Владимирович; Ivanov, Y. N.; Иванов, Юрий Николаевич; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна
}
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Study of magnetic correlations in nanostructured ferromagnets by correlation magnetometry / R. S. Iskhakov [et al.] // JETP Letters. - 2003. - Vol. 78, Is. 10. - P. 646-650, DOI 10.1134/1.1644310. - Cited References: 20 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
AMORPHOUS FERROMAGNETS
   RANDOM ANISOTROPY
   NANOCRYSTALLINE
   SYSTEM
   RIPPLE
Аннотация: We propose a theoretically justified experimental magnetometric technique for determining the size of stochastic domains spontaneously formed in the spin system of nanostructured ferromagnets and for evaluating the effective anisotropy in these magnetically correlated regions. The method is based on monitoring the DeltaM similar to H (-2) relationship in the low-field part of the integral magnetization curve. (C) 2003 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Ignatchenko, V. A.; Игнатченко, Вальтер Алексеевич; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, A. D.; Балаев, Александр Дмитриевич
}
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10.

Altunin, R. R.
Structural phase transformations in Al/Pt bilayer thin films during the solid-state reaction / R. R. Altunin, E. T. Moiseenko, S. M. Zharkov // Phys. Solid State. - 2018. - Vol. 60, Is. 7. - P. 1413-1418, DOI 10.1134/S106378341807003X. - Cited References: 26. - This study was supported by the Russian Foundation for Basic Research, project no. 16-33-00475 mol_a. . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
AL
   SYSTEM
   MULTILAYERS
   ALUMINUM
   HEAT
Аннотация: A sequence of phases forming during the solid-phase reaction in Al/Pt bilayer thin films has been investigated by in situ electron diffraction. It is shown that the amorphous PtAl2 phase forms first during the solid-phase reaction initiated by heating. Upon further heating, PtAl2, Pt2Al3, PtAl, and Pt3Al crystalline phases sequentially form, which is qualitatively consistent with an effective formation heat model. The content of phases forming during the reaction has been quantitatively analyzed and the structural phase transformations have been examined.

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Публикация на русском языке Алтунин, Роман Русланович. Структурные фазовые превращения при твердофазной реакции в тонких двухслойных пленках Al/Pt [Текст] / Р. Р. Алтунин, Е. Т. Моисеенко, С. М. Жарков // Физ. тверд. тела. - 2018. - Т. 60 Вып. 7. - С. 1397–1402

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Moiseenko, E. T.; Zharkov, S. M.; Жарков, Сергей Михайлович; Russian Foundation for Basic Research [16-33-00475 mol_a]
}
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11.

Structural and magnetic features of solid-phase transformations in Mn/Bi and Bi/Mn films / V. G. Myagkov [et al.] // JETP Letters. - 2016. - Vol. 103, Is. 4. - P. 254-259, DOI 10.1134/S0021364016040111. - Cited References: 47. - This work was supported by the Russian Foundation for Basic Research (project nos. 15-02-00948 and 16-03-00069), by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. SP-317.2015.1), and by the Foundation for Promotion of the Development of Small Scientific and Engineering Enterprises (project nos. 0011727 and 6662GU2015, program Umnik). The electron microscopy studies were performed on the equipment of the Shared Usage Center, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences. . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
High-temperature synthesis
   Epitaxial thin-films
   State synthesis
   Martensitic transformations
   Vacuum depositions
   MnBi filmsd
   Bi
   System
   Anisotropy
   Compound
Аннотация: Solid-phase transformations at different annealing temperatures in Mn/Bi (Mn on Bi) and Bi/Mn (Bi on Mn) films have been studied using X-ray diffraction, electron microscopy, and magnetic measurements. It has been shown that the synthesis of the α-MnBi phase in polycrystalline Mn/Bi films begins at a temperature of ~120°C and the Mn and Bi layers react completely at 300°C. The resulting α-MnBi(001) samples have a large perpendicular magnetic anisotropy (Ku ≃ 1.5 × 107 erg/cm3) and a coercive force H HC ~ 3 kOe. In contrast to Mn/Bi, the ferromagnetic α-MnBi phase in Bi/Mn films is not formed even at annealing processes up to 400°C and Mn clusters are formed in a Bi melt. This asymmetry in phase transformations occurs because chemosorbed oxygen existing on the surface of the Mn film in Bi/Mn films suppresses a solid-phase reaction between Mn and Bi. The analysis of the results obtained implies the existence of new low-temperature (~120°C) structural transformation in the Mn–Bi system. © 2016, Pleiades Publishing, Inc.

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Публикация на русском языке Структурные и магнитные особенности твердофазных превращений в Mn/Bi и Bi/Mn пленках [Текст] / В. Г. Мягков [и др.] // Письма в ЖЭТФ : Наука, 2016. - Т. 103 Вып. 4. - С. 280-285

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, pr. Gazety Krasnoyarskii Rabochii, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Yakovchuk, V. Yu.; Яковчук, Виктор Юрьевич; Zhigalov, V. S.; Жигалов, Виктор Степанович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Matsynin, A. A.; Мацынин, Алексей Александрович; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Seredkin, V. A.; Середкин, Виталий Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Bondarenko, G. N.; Бондаренко, Галина Николаевна
}
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12.

Alekseev, K. N.
Strange attractor in resonant tunneling / K. N. Alekseev, G. P. Berman, D. K. Campbell // Phys. Rev. B. - 1998. - Vol. 58, Is. 7. - P. 3954-3962, DOI 10.1103/PhysRevB.58.3954. - Cited References: 38 . - ISSN 0163-1829

РУБ Physics, Condensed Matter
Рубрики:
INTRINSIC BISTABILITY
   RING CAVITY
   OPTICAL TURBULENCE
   TRANSMITTED LIGHT
   QUANTUM-WELLS
   OSCILLATIONS
   BARRIERS
   SYSTEM
   STATE
   TIME
Аннотация: We consider the process of resonant electron tunneling through a double-barrier potential, taking into account nonlinear dynamical effects generated by charge accumulation in the interbarrier space. We use the perturbation approach of Davydov and Ermakov, which was developed for investigating intrinsic bistability in resonant tunneling. For incoming electron flow, which is modulated slowly in time, we show that the resulting nonlinear dynamics can become chaotic, with the chaos described (because of the open nature of the system) by a strange attractor. We determine the conditions for the existence of this strange attractor and estimate characteristic experimental parameters for its observation.

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LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
Univ Calif Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA
Univ Illinois, Dept Phys, Urbana, IL 61801 USA
ИФ СО РАН

Доп.точки доступа:
Berman, G. P.; Campbell, D. K.
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13.

    Ignatchenko, V. A.
    Spectral properties of waves in superlattices with 2D and 3D inhomogeneities / V. A. Ignatchenko, D. S. Tsikalov // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 2. - P. 232-244, DOI 10.1134/S1063776111080061. - Cited References: 24. - This study was supported in part by the program of the Presidium of the Russian Academy of Sciences (grant no. 27.1), Federal Targeted Program (State contract no. 02.740.11.0220), and Targeted Programs "Development of the Higher School Scientific Potential" in 2009-2010 and 2011 years. . - ISSN 1063-7761
Рубрики:
X-RAY REFLECTION
   PERTURBED FIELDS
   MULTILAYERS
   SUSCEPTIBILITY
   PROPAGATION
   INTERFACES
   SCATTERING
   SYSTEM
Аннотация: We investigate the dynamic susceptibility and one-dimensional density of states in an initially sinusoidal superlattice containing simultaneously 2D phase inhomogeneities simulating correlated rough-nesses of superlattice interfaces and 3D amplitude inhomogeneities of the superlattice layer materials. The analytic expression for the averaged Green's function of the sinusoidal superlattice with two phase inhomogeneities is derived in the Bourret approximation. It is shown that the effect of increasing asymmetry in the peak heights of dynamic susceptibility at the Brillouin zone boundary of the superlattice, which was discovered earlier [15] upon an increase in root-mean-square (rms) fluctuations, also takes place upon an increase in the correlation wavenumber of inhomogeneities. However, the peaks in this case also become closer, and the width and depth of the gap in the density of states decrease thereby. It is shown that the enhancement of rms fluctuations of 3D amplitude inhomogeneities in a superlattice containing 2D phase inhomogeneities suppresses the effect of dynamic susceptibility asymmetry and leads to a slight broadening of the gap in the density of states and a decrease in its depth. Targeted experiments aimed at detecting the effects studied here would facilitate the development of radio-spectroscopic and optical methods for identifying the presence of inhomogeneities of various dimensions in multilayer magnetic and optical structures.

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Держатели документа:
[Ignatchenko, V. A.
Tsikalov, D. S.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Tsikalov, D. S.; Цикалов, Денис Сергеевич; Игнатченко, Вальтер Алексеевич
}
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14.

Vetrov, S. Ya.
Spectral properties of a one-dimensional photonic crystal with a resonant defect nanocomposite layer / S. Y. Vetrov, A. Y. Avdeeva, I. V. Timofeev // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 5. - P. 755-761, DOI 10.1134/S1063776111140093. - Cited References: 33. - This work was supported by projects nos. NSh-7810.2010.3, RNP.2.1.1.3455, 27.1 and 3.9.1 of the Russian Academy of Sciences, 5 and 144 of the Siberian Branch of the Russian Academy of Sciences, and State contract no. 02.740.11.0220 according to the program Research and Scientific-Pedagogical Brainpower of Innovated Russia. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
OPTICAL-PROPERTIES
   SEMICONDUCTOR MICROCAVITIES
   2ND-HARMONIC GENERATION
   HETEROGENEOUS MEDIA
   MODE
   ENHANCEMENT
   DISPERSION
   SYSTEM
Аннотация: The spectral properties of a one-dimensional photonic crystal with a defect nanocomposite layer that consists of metallic nanoballs distributed in a transparent matrix and is characterized by an effective resonance permittivity are studied. The problem of calculating the transmission, reflection, and absorption spectra of p-polarized waves in such structures is solved for oblique incidence of light, and the spectral manifestation of defect-mode splitting as a function of the volume fraction of nanoballs and the structural parameters is studied. The splitting is found to depend substantially on the nanoball concentration in the defect, the defect layer thickness, and the angle of incidence. The angle of incidence is found at which the resonance frequency of the nanocomposite is located near the edge of the bandgap or falls in the frequency region of a continuous spectrum. The resonance situation appearing in this case results in an additional transmission band or an additional bandgap in the transmission spectrum.

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Держатели документа:
[Vetrov, S. Ya.
Avdeeva, A. Yu.] Siberian Fed Univ, Krasnoyarsk 660074, Russia
[Timofeev, I. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Avdeeva, A. Y.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Ветров, Степан Яковлевич
}
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15.

    Ivanov, A. A.
    Self-organization of the magnetization in ferromagnetic nanowires / A. A. Ivanov, V. A. Orlov // J. Magn. Magn. Mater. - 2017. - Vol. 440. - P. 217-220, DOI 10.1016/j.jmmm.2016.12.053. - Cited References:21. - This study was supported by RFBR, Project no. 14-02-00238-a . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Самоорганизация намагниченности в ферромагнитных нанопроволоках

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SYSTEM
ANISOTROPY
Кл.слова (ненормированные):
Domain wall -- Nanowire -- Magnetic inhomogeneities -- Stochastic domains
Аннотация: In this work we demonstrate the occurrence of the characteristic spatial scale in the distribution of magnetization unrelated to the domain wall or crystallite size with using computer simulation of magnetization in a polycrystalline ferromagnetic nanowire. This is the stochastic domain size. We show that this length is included in the spectral density of the pinning force of domain wall on inhomogeneities of the crystallographic anisotropy. The constant and distribution of easy axes directions of the effective anisotropy of stochastic domain, are analytically calculated.

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Доп.точки доступа:
Orlov, V. A.; Орлов, Виталий Александрович; RFBR [14-02-00238-a]; 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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16.

Kolovsky, A. R.
Regular and chaotic dynamics of a molecule affected by an external resonance field / A. R. Kolovsky // Phys. Lett. A. - 1991. - Vol. 157, Is. 8-9. - P. 474-480, DOI 10.1016/0375-9601(91)91022-6. - Cited References: 16 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
QUANTAL VERSION
OVERLAP
SYSTEM
Аннотация: The behavior of a molecule affected by a strong external field is discussed. The analysis is performed using a two-level approximation. This approximation will be valid, for example, for a diatomic molecule acted upon by IR radiation if the energy of interaction between the external field and the molecule is less than the anharmonicity of the vibrational spectrum. It is shown that in the case of modulation of the external field the molecule's dynamics is chaotic. We compare this situation to the case of the unmodulated field where the dynamics is regular.

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Доп.точки доступа:
Коловский, Андрей Радиевич
}
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17.

NMR applications for polymer composite materials moisture uptake investigation / V. M. Bouznik [et al.] // Appl. Magn. Reson. - 2016. - Vol. 47, Is. 3. - P. 321-334, DOI 10.1007/s00723-015-0748-2. - Cited References: 41. - This research was performed with the financial support of Russian Foundation for Basic Research (project no. 14-29-10178 ofi_m). . - ISSN 0937-9347

РУБ Physics, Atomic, Molecular & Chemical + Spectroscopy
Рубрики:
FIELD GRADIENT NMR
   REINFORCED EPOXY COMPOSITES
   WATER SELF-DIFFUSION
   TRANSPORT
   GLASS
   SYSTEM
   SPECTROSCOPY
   TEMPERATURE
   ABSORPTION
   ADHESIVE
Аннотация: The 1H nuclear magnetic resonance (NMR) spectroscopy, NMR imaging, and pulsed field gradient NMR (PFG NMR) were applied for comparative study of moisture–polymer composite materials (PCM) interaction. The water uptake in PCM reinforced by aramid and carbon fibers was measured by NMR spectroscopy techniques. The aramid fiber-reinforced PCM absorbs water more intensively compared with PCM reinforced by carbon fiber, but both of them are retaining water inside of pores without formation of chemical bonds. Using NMR imaging the spatial distribution of water absorbed was visualized; preferable water pathways and influence of surface treatment on water-resistant properties were revealed. It was found that the surface rough treatment sufficiently improves the water absorption, but penetration of water molecules is still occurring only through the surfaces and it happens within a thin layer. PFG NMR technique revealed influence of pore structure on moisture–PCM interaction; it was found that additionally to strong hydrophobic properties of carbon fiber, the smaller total volume of pores sufficiently decrease the water uptake. Results achieved in this work demonstrate efficiency of NMR methods applied all together for investigation of PCM, and information obtained is practically important when designing advanced PCM with required properties. © 2016, Springer-Verlag Wien.

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Держатели документа:
Institute of Problems of Chemical Physics RAS, Chernogolovka, Russian Federation
All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russian Federation
Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology SB RAS, Krasnoyarsk, Russian Federation
Science Center in Chernogolovka of the Russian Academy of Sciences, Chernogolovka, Russian Federation

Доп.точки доступа:
Bouznik, V. M.; Morozov, E. V.; Морозов, Евгений Владимирович; Avilova, I. A.; Volkov, V. I.
}
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18.

New bismuth borophosphate Bi4BPO10: Synthesis, crystal structure, optical and band structure analysis / N. A. Babitsky [et al.] // Mater. Chem. Phys. - 2015. - Vol. 163. - P. 286-292, DOI 10.1016/j.matchemphys.2015.07.042. - Cited References: 32. - The study was performed with the financial support of the Ministry of Science and Education of the Russian Federation, Projects 3049, 3098, item 1025, "Fund for Assistance to Small Innovative Enterprises in Science and Technology" (Grant program "UMNIK" 2013 II half GU1/2014), ICDD Grant-in-Aid, #93-10 . - ISSN 0254-0584

РУБ Materials Science, Multidisciplinary
Рубрики:
INITIO MOLECULAR-DYNAMICS
   AUGMENTED-WAVE METHOD
   POWDER DATA
   SYSTEM
   PHASES
Кл.слова (ненормированные):
Inorganic compounds -- Crystal growth -- Crystal structure -- Band-structure
Аннотация: New bismuth borophosphate Bi4BPO10 was obtained by spontaneous crystallization from the melt of correspondent composition at 804 °C. Crystal structure with orthorhombic lattice parameters: a = 22.5731(3) Å, b = 14.0523(2) Å, c = 5.5149(1) Å, V = 1749.34(4), Z = 8, SG Pcab was determined by X-ray powder diffraction technique. The [Bi2O2]2+ -layers, which are typical for bismuth oxide compounds, transform into cationic endless strips of 4 bismuth atoms width directed along the c-axis in Bi4BPO10. The strips combining stacks are separated by flat triangle [BO3]3- -anions within stacks. Neighboring stacks are separated by tetrahedral [PO4]3--anions and shifted relatively to each other. Bismuth atoms are placed in 5-7 vertex oxygen irregular polyhedra. Bi4BPO10 is stable up to 812 °C, then melts according to the peritectic law. The absorption spectrum in the range 350-700 nm was obtained and the width of the forbidden band was estimated as 3.46 eV. The band electronic structure of Bi4BPO10 was modeled using DFT approach. The calculated band gap (3.56 eV) is in good agreement with the experimentally obtained data. © 2015 Elsevier B.V. All rights reserved.

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Держатели документа:
Siberian Federal University, 79 Svobodny Av, Krasnoyarsk, Russian Federation
Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Babitsky, N. A.; Leshok, D. Y.; Mikhaleva, N. S.; Kuzubov, A. A.; Кузубов, Александр Александрович; Zhereb, V. P.; Kirik, S. D.
}
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19.

Mossbauer studies of FexMn1-xS single crystals / G. M. Abramova [et al.] // Phys. Solid State. - 2008. - Vol. 50, Is. 2. - P. 237-240, DOI 10.1134/S1063783408020042. - Cited References: 16 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
METAL-INSULATOR-TRANSITION
   MAGNETIC-PROPERTIES
   ALPHA-MNS
   SULFIDES
   MAGNETORESISTANCE
   PRESSURE
   SYSTEM
   OXIDES
Аннотация: Single crystals of iron manganese sulfides FexMn1-xS (0.25

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Держатели документа:
[Abramova, G. M.
Petrakovskii, G. A.
Bayukov, O. A.
Bovina, A. F.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Varnek, V. A.
Sokolov, V. V.] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia
ИФ СО РАН

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bayukov, O. A.; Баюков, Олег Артемьевич; Varnek, V. A.; Sokolov, V. V.; Bovina, A. F.; Бовина, Ася Федоровна
}
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20.

Mechanisms of dissipation in a Josephson medium based on a high-temperature superconductor in a magnetic field / D. A. Balaev [et al.] // Phys. Solid State. - 2006. - Vol. 48, Is. 5. - P. 826-832, DOI 10.1134/S1063783406050039. - Cited References: 32 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
RESISTIVE TRANSITION
   PHASE-SLIP
   TRANSPORT-PROPERTIES
   MAGNETORESISTANCE
   SYSTEM
   MODEL
   YBA2CU3O7-X
   PENETRATION
   COMPOSITES
   HYSTERESIS
Аннотация: This paper reports on the results of an investigation into the influence of magnetic fields (0-60 kOe) on the temperature dependences of the electrical resistance R(T) of the Y3/4Lu1/4Ba2Cu3O7 + CuO composites. The structure of these composites is considered to be a network of tunnel-type Josephson junctions in which a nonsuperconducting component (CuO) forms boundaries (barriers) between high-temperature superconducting crystallites. The temperature dependence R(T) of the composites has two steps characteristic of granular superconductors: (i) an abrupt change in the electrical resistance at the critical temperature of high-temperature superconducting crystallites and (ii) a smooth transition to the superconducting state under the influence of the boundaries between the crystallites. The experimental dependences R(T) are analyzed within the Ambegaokar-Halperin model of thermal fluctuations in Josephson junctions and the flux creep model. An increase in the magnetic field leads to a crossover from the Ambegaokar-Halperin mechanism to the flux creep mechanism. The temperature dependences R(T) in the range of weak magnetic fields (from 0 to 10(2) Oe) are adequately described by the relationship following from the Ambegaokar-Halperin model. In the range of strong magnetic fields (from 10(3) to 6 x 10(4) Oe), the dissipation obeys the Arrhenius law R similar to exp(-U(H)/T)], which is characteristic of the flux creep model with a temperature-independent pinning energy U(H). The effective Josephson coupling energies and the pinning energies corresponding to the Ambegaokar-Halperin and flux creep mechanisms are determined.

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

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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