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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Чжан, Анатолий Владимирович, Задворный А. Г., Середкин, Виталий Александрович, Патрин, Геннадий Семёнович
Заглавие : Применение оптоэлектронных устройств для наблюдения доменных структур в ферромагнитных материалах
Место публикации : Изв. вузов. Приборостроение. - 2012. - T. 55, № 12. - С. 30-32. - ISSN 0021-3454
Примечания : Работа выполнена при поддержке гранта РФФИ №11–0200695-А
Ключевые слова (''Своб.индексиров.''): спектральная характеристика--инфракрасное излучение--светодиод--доменная структура--матрица--поляризатор--spectral characteristics--infrared--led--domain structure--matrix--polaroid
Аннотация: Показана возможность использования устройств, снабженных приборами с зарядовой связью, для определения магнитных характеристик ферромагнитных материалов.The possibility of the use of domain structures for determination of magnetic characteristics of ferromagnetic materials is demonstrated.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Коршунов, Михаил Анатольевич, Шабанов, Александр Васильевич, Зырянов, Виктор Яковлевич
Заглавие : Исследование методом молекулярной динамики смектика C* 4-децилоксибензилиден-4'-амино-2-метилбутилциннамата в полимерной матрице при воздействии электрического поля
Место публикации : Физич. мезомеханика. - Томск: Ин-т физики прочности и материаловедения СО РАН, 2015. - Т. 18, № 1. - С. 90-95. - ISSN 1683-805X
Примечания : Библиогр.: 22. - Работа выполнена частично при поддержке РФФИ (проект № 15-02-06924) и программы Президиума РАН (проекты №№ 24.29, 24.32)
Ключевые слова (''Своб.индексиров.''): молекулярная динамика--нанокапсула--жидкий кристалл--сегнетоэлектрический смектик--параметр порядка--molecular dynamics--nanocapsule--liquid crystal--ferroelectric smectic--order parameter
Аннотация: Методом молекулярной динамики исследовано распределение молекул сегнетоэлектрического смектического жидкого кристалла 4-децилоксибензилиден-4''-амино-2-метилбутилциннамата в нанокапсуле с фиксированным приграничным слоем при воздействии внешнего электрического поля. Получена температурная зависимость параметра порядка (P 2) как при наличии внешнего электрического поля, так и без него. Вычислена температура перехода из смектической фазы С* в смектическую фазу A в капсуле при наличии поля. Обсуждается изменение распределения молекул и их конформации при воздействии поля.A molecular dynamics method is used to study the distribution of molecules of a ferroelectric smectic liquid crystal 4-decyloxybenzylidene 4''-amino 2-methyl butyl cinnamate in a nanocapsule with a fixed near-boundary layer under an externally applied electric field. The temperature dependence of the order parameter is obtained both in the presence and in the absence of the external electric field. The temperature of the smectic-C* to smectic-A phase transition in the capsule in the presence of the electric field is calculated. The variation of molecule distribution and molecule conformation under an applied electric filed is discussed.
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3.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Yakushkin S. S., Balaev D. A., Shaikhutdinov K. A., Dubrovskiy A. A., Bukhtiyarova G. A., Martyanov O. N.
Заглавие : ε-Fe2O3 nanoparticles in silica matrix. system with unique magnetic properties for catalysis
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.3OR-C-6. - P.425
Примечания : Cited References: 6. - Support by Russian Science Foundation (Grant No. 17-12-01111)
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rotter I., Sadreev A. F.
Заглавие : Zeros in single-channel transmission through double quantum dots
Место публикации : Phys. Rev. E: AMERICAN PHYSICAL SOC, 2005. - Vol. 71, Is. 4. - Ст.46204. - ISSN 1063-651X, DOI 10.1103/PhysRevE.71.046204
Примечания : Cited References: 28
Предметные рубрики: PHASE EVOLUTION
RESONANCE
TRANSPORT
SYSTEMS
Ключевые слова (''Своб.индексиров.''): fano interference--fano resonances--overlapping resonances--transmission amplitude--channel capacity--eigenvalues and eigenfunctions--function evaluation--hamiltonians--mathematical models--mathematical operators--matrix algebra--resonance--signal interference--semiconductor quantum dots
Аннотация: By using a simple model we consider single-channel transmission through a double quantum dot that consists of two single dots coupled by a wire of finite length L. Each of the two single dots is characterized by a few energy levels only, and the wire is assumed to have only one level whose energy depends on the length L. The transmission is described by using S matrix theory and the effective non-Hermitian Hamilton operator H-eff of the system. The decay widths of the eigenstates of H-eff depend strongly on energy. The model explains the origin of the transmission zeros of the double dot that is considered by us. Mostly, they are caused by (destructive) interferences between neighboring levels and are of first order. When, however, both single dots are identical and their transmission zeros are of first order, those of the double dot are of second order. First-order transmission zeros cause phase jumps of the transmission amplitude by pi, while there are no phase jumps related to second-order transmission zeros. In this latter case, a phase jump occurs due to the fact that the width of one of the states vanishes when crossing the energy of the transmission zero. The parameter dependence of the widths of the resonance states is determined by the spectral properties of the two single dots.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F., Bulgakov E. N., Rotter I.
Заглавие : Trapping of an electron in the transmission through two quantum dots coupled by a wire
Место публикации : JETP Letters. - 2005. - Vol. 82, Is. 8. - P.498-503. - ISSN 0021-3640, DOI 10.1134/1.2150869
Примечания : Cited References: 32
Предметные рубрики: NUCLEAR REACTIONS
CIRCULAR BENDS
UNIFIED THEORY
WAVE-GUIDES
S-MATRIX
STATES
BILLIARD
SYSTEMS
Аннотация: We consider single-channel transmission through a double quantum dot that consists of two identical single dots coupled by a wire. The numerical solution for the scattering wave function shows that the resonance width of a few of the states may vanish when the width (or length) of the wire and the energy of the incident particle each take a certain value. In such a case, a particle is trapped inside the wire as the numerical visualization of the scattering wave function shows. To understand these numerical results, we explore a simple model with a small number of states, which allows us to consider the problem analytically. If the eigenenergies of the closed system cross the energies of the transmission zeroes, the wire effectively decouples from the rest of the system and traps the particle. (C) 2005 Pleiades Publishing, Inc.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Ya., Timofeev I. V.
Заглавие : Transparent conductive oxides for the epsilon-near-zero Tamm plasmon polaritons
Место публикации : J. Opt. Soc. Am. B. - 2019. - Vol. 36, Is. 10. - P.2817-2823. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.36.002817
Примечания : Cited References: 44. - The reported study was funded by RFBR according to the research project No 18-32-00053 and financial support RFBR and MOST according to the research project No 19-52-52006.
Аннотация: We demonstrate the possibility of using transparent conducting oxides [aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), indium tin oxide (ITO)] to form Tamm plasmon polaritons in the near-infrared spectral range where the permittivity of oxides is near zero. The spectral properties of the structures are investigated in the framework of the temporal coupled-mode theory and confirmed by the transfer matrix method. It is found that in the critical coupling conditions, the maximal Q-factor of a Tamm plasmon polariton is achieved when a photonic crystal is conjugated with the AZO film, while at the conjugation with the ITO films, the broadest spectral line is obtained. The sensitivity of the wavelength and spectral width of the Tamm plasmon polariton to changes in the oxide film thickness, bulk concentration of a dopant, and angle of incidence is demonstrated.
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7.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Maltsev V. K., Chekanova L. A., Krayukhin I. N., Momot N. A., Barnakov Ch. N.
Заглавие : The structure and the magnetic properties of cobalt nanoparticles in the high-porous amorphous carbon matrix
Коллективы : International Conference on Physics, Chemistry and Application of Nanostructures
Место публикации : Physics, Chemistry and Application of Nanostructures: Proceedings of the International Conference, NANOMEETING 2009. - 2009. - P.268-271. - ISBN 9814280356 (ISBN); 9789814280358 (ISBN)
Ключевые слова (''Своб.индексиров.''): amorphous carbon matrix--co nanoparticles--cobalt nanoparticles--cobalt particles--defective phase--local magnetic anisotropy--magnetic properties of co--nmr spectrum--amorphous carbon--cobalt--magnetic properties--nuclear magnetic resonance spectroscopy--nanoparticles
Аннотация: Structure and magnetic properties of Co nanoparticles in the high-porous amorphous carbon matrix are presented. The average size of cobalt particles is 20 nm. The Co nanoparticles are ferromagnetic and characterized by the local magnetic anisotropy fields Ha = 10 kOe. The material consists of Jcc and hcp Co phases and highly defective phase with high concentration of stacking faults. There are no variations observed in the line shape of the NMR spectrum of Co particles at different temperatures. This implies that there are no polymorphous transfonnations inside Co particles with temperature.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Komogortsev S. V., Chekanova L. A., Balaev A. D., Yuzova V. A., Semenova O. V.
Заглавие : The magnetic structure of ferromagnetic filaments of a CoNi(P) alloy in a porous silicon matrix
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2003. - Vol. 29, Is. 4. - P263-266. - ISSN 1063-7850, DOI 10.1134/1.1573285
Примечания : Cited References: 12
Предметные рубрики: RANDOM ANISOTROPY
NI NANOWIRES
NANOCRYSTALLINE
FILMS
CO
FE
Аннотация: The magnetic and resonance properties of CoNi(P) alloys, synthesized by chemical deposition as films on single crystal silicon substrates and as filaments in linear pores of porous silicon substrates, were studied by magnetization and ferromagnetic resonance measurements. It is established that CoNi(P) alloys of the same composition but different morphologies occur in states characterized by different degrees of nonequilibrium, which is manifested by different modes of the magnetization approach to saturation. (C) 2003 MAIK "Nauka / Interperiodica".
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V., Khodenkov S. A.
Заглавие : The effective permittivity of an anisotropic composite of spheroidal particles in a dielectric matrix
Место публикации : Tech. Phys. Lett. - 2022. - Vol. 48, Is. 3. - P.110-114. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785022040058
Примечания : Cited References: 10. - This study was carried out within the framework of state order FEFE-2020-0013 of the Ministry of Science and Higher Education of the Russian Federation
Аннотация: The concentration dependences of the effective permittivity have been obtained for an anisotropic composite consisting of a dielectric matrix filled with codirectional particles in the form of oblate or prolate ellipsoids of revolution (spheroids). The calculation has been made by solving numerically a system of coupled quadratic and integral equations obtained using the rigorous modification of the quasi-static Bruggeman theory. It is shown that the traditional simplified modification of the Bruggeman theory, which is widely used for calculating anisotropic composites, leads to errors of different signs for electromagnetic waves of the longitudinal and transverse polarizations relative to the spheroid axes. The dependences of the errors on the particle concentration are nonmonotonic and extrema observed in them can exceed 100%. The positions and values of the extrema depend strongly on the ellipticity of particles and the contrast of their permittivity with that of the matrix.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Smorgon S. L., Zyryanov V. Ya., Shabanov V. F., Pozhidaev E. P.
Заглавие : Textures and orientational structures of elongated FLC droplets in polymer matrix
Коллективы : International Liquid Crystal Conference
Место публикации : 17th International Liquid Crystal Conference (ILCC 1998): program and abstract book. - 1998. - P.252
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Iskhakov R. S., Chekanova L. A., Denisova E. A., Bukaemskiy A.A., Melnikova S.V.
Заглавие : Synthesis and investigation of nanostructured Fe1-xNi x(P) columns deposited into porous polycarbona te matrix
Место публикации : Physics, Chemistry and Application of Nanostructures - Proceedings of the International Conference, NANOMEETING 2009. - 2009. - International Conference on Physics, Chemistry and Application of Nanostructures, NANOMEETING 2009 (26 May 2009 through 29 May 2009, Minsk, ) Conference code: 99438. - С. 264-267. - ISBN 9814280356 (ISBN); 9789814280358 (ISBN)
Ключевые слова (''Своб.индексиров.''): exchange constants--macroscopic anisotropy--morphological characterization--nano-structured fe--nanocrystallines--perpendicular anisotropy--porous polycarbonate membranes--shape anisotropy--magnetic anisotropy--nanostructures--nickel
Аннотация: Ferromagnetic Fe1-xNix(P) (x=24-65 at.%.) columns have been chemically deposited into porous polycarbonate membranes with pore diameters of 0.1-4 J.Im. The morphological characterization by TEM reveals the shape features in synthesized columns. Their magnetic perpendicular anisotropy due to the shape anisotropy of columns was observed. The dependence of macroscopic anisotropy on pore diameter and Ni content is analyzed. Approach to magnetic saturation curves and exchange constant of nanocrystalline fe?.xNix(P) columns deposited into porous pol}\:arbonate matrix are investigated.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edelman I. S., Ivantsov R., Vasiliev A., Stepanov S., Kornilova E., Zarubina T.
Заглавие : Superparamagnetic and ferrimagnetic nanoparticles in glass matrix
Место публикации : Physica B. - 2001. - Vol. 301, Is. 3-4. - P.203-211. - ISSN 0921-4526, DOI 10.1016/S0921-4526(01)00274-5
Примечания : Cited References: 9
Предметные рубрики: MAGNETIC-PROPERTIES
PARTICLES
FILMS
Ключевые слова (''Своб.индексиров.''): magnetic nanoparticles--faraday rotation--faraday rotation--magnetic nanoparticles--crystal structure--faraday effect--ferrimagnetic materials--glass--particle size analysis--superparamagnetism--x ray diffraction analysis--amorphous glass matrices--faraday rotations--nanostructured materials
Аннотация: Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel structure, their dimensions are about 10-24 nm. The FR field dependencies are typical for ferrimagnetic or superparamagnetic substances depending on particle size. Strong FR increase at the samples cooling (more than twice for some samples) in the temperature interval 105-273 K is observed. (C) 2001 Elsevier Science B.V. All rights reserved.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Boev N. M., Izotov A. V., Solovyev P. N., Tyurnev V. V.
Заглавие : Study of the weak field sensor on the resonant microstrip structure with a thin ferromagnetic film
Место публикации : Russ. Phys. J. - 2018. - Vol. 61, Is. 8. - P.1367-1375. - ISSN 10648887 (ISSN), DOI 10.1007/s11182-018-1544-x
Примечания : Cited References: 19. - This research was performed with support of the Russian Ministry of Education and Science, project No. RFMEFI60417X0179.
Ключевые слова (''Своб.индексиров.''): microstrip resonator--thin magnetic film--frequency response--sensor of weak magnetic fields--quality factor--scattering matrix--magnetometer
Аннотация: The paper examines the characteristics of the miniature sensor of weak magnetic fields on the resonant microstrip structure with a thin ferromagnetic film. The authors calculated the frequency response of irregular microstrip resonator containing anisotropic magnetic film in quasi-static approximation. The resonator is connected to transmission lines via coupling capacities. The authors determined the optimal directional angles of the constant magnetic displacement field ensuring maximum sensitivity of the sensor. They examined the impact of angular and amplitude dispersion of uniaxial magnetic anisotropy of thin film upon the sensor characteristics. The regularities determined in this research qualitatively agree with the experimental results.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Yakushkin S. S., Dubrovskii A. A., Bukhtiyarova G. A., Shaikhutdinov K. A., Martyanov O. N.
Заглавие : Study of the high-coercivity material based on ε-Fe2O3 nanoparticles in the silica gel matrix
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 42, Is. 4. - P.347-350. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785016040039
Примечания : Cited References: 17. - This study was supported by the Federal Agency for Scientific Organizations of Russia (base budget financing no. V.44.1.15), the Scientific and Educational Center of Energy-Efficient Catalysis at the Novosibirsk State University, and the Russian Foundation for Basic Research (project no. 15-32-50919).
Предметные рубрики: Phase
Field
State
Oxide
Iron
Аннотация: We report the results of investigations of ε-Fe2O3 magnetic nanoparticles obtained by incipient wetness impregnation of silica gel. It was established that the obtained samples with an iron content of 12‒16% mass % containing ε-Fe2O3 nanoparticles with an average size of 10 nm on the silica gel surface exhibit a room-temperature coercivity of about 10 kOe. Along with fabrication simplicity, this fact makes the prepared samples promising for application as a magnetically hard material. © 2016, Pleiades Publishing, Ltd
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov An. A., Tyurnev V. V., Shabanov D. A.
Заглавие : Study of a composite consisting of metal nanoparticles in a dielectric matrix and multilayer bandpass filters based on it
Место публикации : Dokl. Phys. - 2021. - Vol. 66, Is. 3. - P.59-63. - ISSN 10283358, DOI 10.1134/S1028335821030010
Примечания : Cited References: 11. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation within a State Assignment, project no. FEFE-2020-0013 “Development of the Theory of Self-Configuring Machine Learning Algorithms for Modeling and Predicting the Characteristics of Components of Complex Systems”
Аннотация: The frequency and concentration dependences of the effective complex permittivity of a composite consisting of silver nanoparticles in a polystyrene dielectric matrix have been investigated. It has been found that, with an increase in the volume concentration of particles in the composite to ~33%, the real part of its permittivity increases from 2.6 to ~103, while the loss tangent remains no higher than 10–2 up to a frequency of 1 THz. We show the possibility of designing bandpass filters based on composite layered structures, which can be tuned by selecting the particle concentration in the quarter-wavelength layers of the mirrors that ensure the optimal interaction of half-wavelength resonators with each other and the outer resonators with free space. The high contrast between the matrix and the composite permittivities makes it possible to create mirrors with a required reflectivity using a minimum number of layers.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Simunin M. M., Khartov S. V., Shiverskii A. V., Zyryanov V. Ya., Fadeev, Yu. V., Voronin A. S.
Заглавие : Structures based on graphitized nanotubulenes with a common electrode in a matrix of porous anodic alumina for the purpose of forming electrically switchable membranes
Коллективы : Russian Science Foundation [15-19-10017]
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 41, Is. 11. - P.1047-1050. - ISSN 1063-7850, DOI 10.1134/S1063785015110103. - ISSN 1090-6533(eISSN)
Примечания : Cited References:20. - This work was supported financially by the Russian Science Foundation, project no. 15-19-10017
Предметные рубрики: POLYPEPTIDE BRUSH
ION-TRANSPORT
PERMEABILITY
POLYMER
PHOTOREGULATION
PERMEATION
ACID
Аннотация: A structure based on porous anodic alumina with through pores is synthesized. This structure may be of some interest in terms of fabricating electrically switchable membranes. Conducting tubulenes connected to a common input electrode are located in the pores of the structure. It is hypothesized that enhancement of the electric field nonuniformity associated with the indicated structure morphology should help raise the degree of ionic selectivity of the membrane and broaden the range of permissible concentrations of ions in the processed solution. An suggestion regarding the structure of synthesized tubulenes in the context of the problem of suppressing the physical sorption of ions on the pore surface and raising the hydrogen and oxygen reduction potentials relative to those of state-of-the-art field-switchable membranes is also made.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avdeeva A. Yu., Vetrov S. Ya., Timofeev I. V.
Заглавие : Splitting of a Tamm plasmon polariton at the interface between a metal and a resonant nanocomposite layer conjugated with a photonic crystal
Место публикации : J. Opt. Soc. Am. B. - 2021. - Vol. 38, Is. 6. - P.1792-1797. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.420490
Примечания : Cited References: 36. - 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 project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006. The authors are thankful to Pavel S. Pankin for valuable discussions and comments
Аннотация: Splitting of a Tamm plasmon polariton at the interface between a metal and a nanocomposite layer conjugated with a photonic crystal (Bragg mirror) has been theoretically investigated. The splitting can be implemented when the Tamm plasmon polariton frequency approaches the resonance frequency of the nanocomposite, which consists of metallic nanoballs dispersed in a transparent matrix. The reflectance spectrum of the p-polarized waves at the normal incidence of light has been calculated. It has been established that the Tamm plasmon polariton splitting significantly depends on the concentration of nanoballs in the nanocomposite layer and its thickness. The solution of the dispersion equation derived for a sample with semi-infinite mirrors has been compared with the spectra obtained for a finite structure by the transfer matrix method.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Baksheev N. V., Mushailov E. S.
Заглавие : Spin reorientation effect of conductive electrons in iron matrix doped with cobalt
Место публикации : Fiz. Tverd. Tela. - 1981. - Vol. 23, Is. 2. - P.631-633. - ISSN 0367-3294
Примечания : Cited References: 9
WOS
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Gunyakov V. A.
Заглавие : Spectral position control of dye absorption band maximum in an orienting matrix
Место публикации : Molecular Engineering. - 1992. - Vol. 1, N. 4. - P.311-316
Аннотация: The continuous control of the maximum position να of the dye absorption band (the zero of the derivative dD α(ν)/dν of the cell's optical density D α(ν)) in a nematic matrix is demonstrated experimentally, as a result of changing the angle α between the optical axis of a planar-oriented sample and the plane of polarization of absorbed light incident normal to the optical axis. The theory proposed describes quantitatively the experimental dependence ν(α). The rotation of the polarizer with given frequency ω results in the spectral position modulation of the solute band maximum ν(ω) within ν(α=0°)−ν(90°)=700 cm−1.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Loiko V. A., Konkolovich A. V., Miskevich A. A., Zyryanov V. Ya., Maschke U.
Заглавие : Small-angle light scattering by monolayer of liquid crystal droplets in polymer matrix
Место публикации : Atti della Accademia Peloritana dei Pericolanti, Classe di Scienze Fisiche, Matematiche e Naturali. - 2011. - Т. 89, №SUPPL. 1. - ISSN 0365-0359, DOI 10.1478/C1V89S1P059. - ISSN 1825-1242(eissn)
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