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Remagnetization of ε-Fe2O3 nanoparticles in a pulse field / A. A. Krasikov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P9.4. - P. 390. - References: 4 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
ε-Fe2O3 -- nanoparticles -- coercivity -- remagnetization -- superparamagnetic relaxation

Доп.точки доступа:
Krasikov, A. A.; Красиков, Александр Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Popkov, S. I.; Попков, Сергей Иванович; Balaev, A. D.; Балаев, Александр Дмитриевич; Yakushkin, S. S.; Якушкин С. С.; Bukhtiyarova, G. A.; Бухтиярова Г. А.; Martyanov, O. N.; Мартьянов О.Н.; Poperechny, I. S.; Поперечный И. С.; Raikher, Yu.L.; 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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Mironov, V. L.
Dielectric model of a mineral arctic soil thawed and frozen at 0.05-15 GHz / V. L. Mironov, I. P. Molostov, V. V. Scherbinin // International Siberian Conference on Control and Communications (SIBCON) (MAY 21-23, 2015, Omsk, RUSSIA) : IEEE, 2015. - P2684-2687. - Cited References:11 . - ISBN 978-1-4799-7103-9
Кл.слова (ненормированные):
dielectric model -- temperature dependence -- dielectric relaxation -- soil -- Arctic regions -- remote sensing
Аннотация: The dielectric model for an arctic soil both thawed and frozen has been developed. The model is based on the soil dielectric measurements carried out in the ranges of gravimetric moisture from 0.01 to 0.43 g/g, dry soil density from 1.25 to 1.83 g/cm(3), and temperature from 25 to -30 degrees C (cooling run), in the frequency range 0.05-15 GHz. To fit the results of measurements of the soil complex dielectric constant as a function of soil moisture and wave frequency, the refractive mixing dielectric model in conjunction with the Debye multi-relaxation equations were applied. As a result, the spectroscopic parameters of dielectric relaxations for the bound, transient bound, and unbound soil water components were derived, being further complimented with the thermodynamics parameters to ensure a complete set of parameters of the temperature dependent multi-relaxation spectroscopic dielectric model for moist soils proposed. To calculate complex dielectric constant of soil, the following input variables have to be assigned: 1) density of dry soil, 2) gravimetric moisture, 3) wave frequency, and 4) temperature. The error of the dielectric model was evaluated in terms of RMSE, yielding the values RMSE of 0.53 and 0.43 for the soil dielectric constant and loss factor, respectively. These values appeared to be in the order of the dielectric measurement error itself. The dielectric model suggested can be applied in the active and passive remote sensing techniques in microwave to develop algorithms for retrieving soil moisture and freeze/thaw state of the topsoil in the Arctic regions.

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Доп.точки доступа:
Molostov, I. P.; Scherbinin, V. V.; Миронов, Валерий Леонидович
}
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Suppression of surface plasmon resonance in Au nanoparticles upon transition to the liquid state / V. S. Gerasimov [et al.] // Opt. Express. - 2016. - Vol. 24, Is. 23. - P. 26851-26856, DOI 10.1364/OE.24.026851. - Cited References: 24. - This work was performed within the State contract of the RF Ministry of Education and Science for Siberian Federal University for scientific research in 2014–2016 (Reference number 1792) and SB RAS Program No II.2P (0358-2015-0010). The numerical calculations were performed using the MVS-1000 M cluster at the Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences. . - ISSN 1094-4087
Кл.слова (ненормированные):
Electron scattering -- Gold -- Lattice constants -- Liquids -- Melting -- Metal nanoparticles -- Nanoparticles -- Surface plasmon resonance -- Electron phonon couplings -- Experimental spectra -- Experimental values -- Gold Nanoparticles -- Nonlinear optical response -- Plasmonic nanoparticle -- Relaxation constants -- Surface plasmon frequency -- Plasmons
Аннотация: Significant suppression of resonant properties of single gold nanoparticles at the surface plasmon frequency during heating and subsequent transition to the liquid state has been demonstrated experimentally and explained for the first time. The results for plasmonic absorption of the nanoparticles have been analyzed by means of Mie theory using experimental values of the optical constants for the liquid and solid metal. The good qualitative agreement between calculated and experimental spectra support the idea that the process of melting is accompanied by an abrupt increase of the relaxation constants, which depends, beside electronphonon coupling, on electron scattering at a rising number of lattice defects in a particle upon growth of its temperature, and subsequent melting as a major cause for the observed plasmonic suppression. It is emphasized that observed effect is fully reversible and may underlie nonlinear optical responses of nanocolloids and composite materials containing plasmonic nanoparticles and their aggregates in conditions of local heating and in general, manifest itself in a wide range of plasmonics phenomena associated with strong heating of nanoparticles. © 2016 Optical Society of America.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Computational Modeling, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarskz, Russian Federation
Division of Theoretical Chemistry and Biology, Royal Institute of Technology, Stockholm, Sweden

Доп.точки доступа:
Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Ershov, A. E.; Ершов, Александр Евгеньевич; Gavrilyuk, A. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Agren, H.; Polyutov, S. P.
}
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Berzhanskii, V. N.
Ccritical relaxation in CDCR2SE4 ferromagnet / V. N. Berzhanskii, V. I. Ivanov // Fiz. Tverd. Tela. - 1980. - Vol. 22, Is. 6. - P. 1871-1873. - Cited References: 7 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
Ivanov, V. I.; Бержанский, Владимир Наумович
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Zobov, V. E.
Spin-array relaxation of the nuclear magnetic system of solid states with multi-spin interactions generated by modulated intense radiofrequent fields / V. E. Zobov, M. A. Popov // Zhurnal Eksperimentalnoi Teor. Fiz. - 1996. - Vol. 110, Is. 2. - P. 635-660. - Cited References: 24 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
NMR

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Доп.точки доступа:
Popov, M. A.
}
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The influence of magnetic field on the frequency dependence of the impedance in the anion–substituted manganese chalcogenides / O. B. Romanova [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P4.4. - P. 232. - This work was financially supported by RFFI №15–42–04099 and assignment №114090470016. . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
chalcogenides -- impedance -- relaxation -- magnetoresistance

Держатели документа:
Scientific-Practical Materials Research Center NAS, Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Korolev, V. V.; Королёв В. В.; Kretinin, V. V.; Кретинин В. В.; Yanushkevich, K. I.; 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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    Mironov, V. L.
    Temperature dependent multi-relaxation spectroscopic dielectric model for an arctic silt clay loam soil thawed and frozen at 0.1-15 GHZ / V. L. Mironov, I. P. Molostov, A. Yu. Karavaysky // IEEE Int.Geoscience and Remote Sensing Symp. (IGARSS) : proceedings. - 2016. - P. 3122-3125DOI 10.1109/IGARSS.2016.7729807. - Cited References: 5
   Перевод заглавия: Температурно зависимая много-релаксационная спектроскопическая диэлектрическая модель для арктической суглинистой почвы при замораживании и оттаивании на частоте 0,1-15 ГГц
Аннотация: The dielectric model for an arctic silt clay loam soil collected on the Yamal peninsula both thawed and frozen has been developed. The model is based on the soil dielectric measurements carried out in the ranges of gravimetric moisture 0.01 to 0.33 g/g, dry soil density 1.28 to 1.65 g/cm3, and temperature 25 to -30°C (cooling run), in the frequency range 0.1-15 GHz. To fit the results of measurements of the soil complex dielectric constant as a function of soil moisture and wave frequency, the refractive mixing dielectric model in conjunction with the Debye multi-relaxation equations were applied. As a result, the spectroscopic parameters of dielectric relaxations and electrical specific conductivities for the bound, transient bound, and unbound soil water components were derived, being further complimented with the thermodynamics parameters. Having these parameters, the complex relative permittivity of soil can be predicted as a function of 1) density of dry soil, 2) gravimetric moisture, 3) wave frequency, and 4) temperature.

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Доп.точки доступа:
Molostov, I. P.; Молостов, Илья Петрович; Karavaysky, A. Yu.; Каравайский, Андрей Юрьевич; Миронов, Валерий Леонидович; IEEE International Geoscience and Remote Sensing Symposium(2016 ; July ; 10-15 ; Beijing, China)
}
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Dielectric relaxation and phase transition behavior of (1–x)Pb(Zn1/3Nb2/3)O3-xBaTiO3 binary solid solutions / Q. Gao [et al.] // Ceram. Int. - 2018. - Vol. 44, Is. 15. - P. 18491-18498, DOI 10.1016/j.ceramint.2018.07.069. - Cited References: 53. - This work was supported by the National Basic Research Program of China (Grant No. 2015CB654602 ), the International Science & Technology Cooperation Program of China (Grant No. 2015DFA51100 ), the NSFC projects (Grant Nos. 51761145024 and 51772239 ), Shaanxi province project 2017 ktpt-21, the Joint fund of the Ministry of Education (Grant No. 6141A02033210 ) and the 111 Project under Grant No. B14040 . The SEM work was done at International Center for Dielectric Research (ICDR), Xi’an Jiaotong University, Xi’an, China. . - ISSN 0272-8842
Кл.слова (ненормированные):
Dielectric relaxation -- Phase transition -- “U”-shaped variation -- Polarization mismatch
Аннотация: Dielectric relaxation and phase transition behaviors in (1–x)Pb(Zn1/3Nb2/3)O3-xBaTiO3 (PZN-BT) binary solid solutions have been systematically studied in this paper. All the compositions display a pure pseudo-cubic perovskite structure. As the BT contents increase from 10 mol% to 70 mol%, the phase transition peak becomes broader and broader, accompanying with decreases of ɛm (the maximum dielectric permittivity) and Tm (the temperature corresponds to the ɛm). Nevertheless, an abnormal increase of ɛm and Tm occurs when the BT contents exceeds 70 mol%, forming a “U” shaped curve of the compositional dependence of ɛm and Tm. Moreover, it is indicated from the new glass model fitting results that the characteristic parameter p, which represents the degree of relaxation, also shows a similar “U” shaped variation curve. Similarly, as shown in polarization-electric field loops, both remnant polarizations (Pr) and coercive fields (Ec) display the “U” shaped curve as the BT content changes from 10 mol% to 80 mol%. Finally, according to the similar variation of these key parameters mentioned above, a polarization mismatched model, which describes the destruction and reestablishment of the long range order arrangement in solid solutions composed of two kinds of ferroelectrics, is proposed to illustrate the underlying mechanism. In this PZN-BT system or other similar ABO3-type perovskite relaxors, the competition between the A-O and B-O coupling plays an important role to form the “U” shaped evolution of these key parameters.

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Держатели документа:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic and In formation Engineering, Xi'an Jiaotong University, Xi'an, China
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russian Federation
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russian Federation

Доп.точки доступа:
Gao, Q.; Hu, Q.; Jin, L.; Gorev, M. V.; Горев, Михаил Васильевич; Chezganov, D. S.; Vlasov, E. O.; Zeng, H.; Zhao, L.; Cui, Y.; Xu, Z.; Wei, X.
}
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    Lundin, A. A.
    Asymptotic similarity of time correlation functions and shape of the 13C and 29Si NMR spectra in diamond and silicon / A. A. Lundin, V. E. Zobov // J. Exp. Theor. Phys. - 2018. - Vol. 127, Is. 2. - P. 305-315, DOI 10.1134/S1063776118080216. - Cited References: 47. - We thank V.A. Atsarkin, V.V. Demidov, F.S. Dzheparov, and E. B. Feldman for the discussion of our results. This work was supported by a subsidy allocated by the Institute of Chemical Physics of the Russian Academy of Science for the State assignment, theme 0082-2018-0005, code TSITIS AAAA-A18-118020690203. . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
SPIN SYSTEMS
   LINE-SHAPES
   RELAXATION
   SOLIDS
   PARAMAGNETS
   RESONANCE
Аннотация: Based on the proposed theory, we have investigated the shape of the NMR absorption spectra for 13C and 29Si nuclei in diamond and silicon crystals attributable to the internuclear dipole–dipole interaction. In accordance with the available experimental data, we have considered both crystals with a 100% content of magnetoactive isotopes and crystals with a comparatively low dilution by nonmagnetic nuclei. The time correlation functions (the first of which is the Fourier transform of the NMR spectrum) arising in an infinite chain of coupled differential equations are shown to be mutually similar with a slight time delay. The proposed theory allows the spectrum to be calculated analytically. The results obtained agree satisfactorily with the experimental ones. It is noted that the mutual similarity of the time correlation functions is probably a corollary of the development of dynamical chaos in the system.

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Публикация на русском языке Лундин, Андрей Арнольдович. Асимптотическое подобие временных корреляционных функций и форма спектров ЯМР 13C и 29Si в алмазе и кремнии [Текст] / А. А. Лундин, В. Е. Зобов // Журн. эксперим. и теор. физ. - 2018. - Т. 154 Вып. 2. - С. 354–367

Держатели документа:
Russian Acad Sci, Semenov Inst Chem Phys, Vorobevskoe Sh 26, Moscow 117977, Russia.
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Akademgorodok 50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zobov, V. E.; Зобов, Владимир Евгеньевич; Institute of Chemical Physics of the Russian Academy of Science [0082-2018-0005, TSITIS AAAA-A18-118020690203]
}
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10.

    Особенности двухмагнонных процессов релаксации в нанокристаллических тонких магнитных пленках / А. В. Изотов [и др.] // Изв. вузов. Физика. - 2018. - Т. 61, № 12. - С. 153-159. - Библиогр.: 25. - Работа выполнена при поддержке Министерства образования и науки РФ, задание № 3.1031.2017/ПЧ. . - ISSN 0021-3411
   Перевод заглавия: Special features of two-magnon relaxation processes in nanocrystal magnetic thin films
Кл.слова (ненормированные):
микромагнитное моделирование -- нанокристаллиты -- случайная магнитная анизотропия -- ферромагнитный резонанс -- сверхвысокие частоты -- двухмагнонный процесс релаксации -- Micromagnetic modeling -- Nanocrystallites -- Random magnetic anisotropy -- ferromagnetic resonance -- ultrahigh frequencies -- two-magnon relaxation process
Аннотация: Численным анализом микромагнитной модели обнаружена «резонансная» особенность процессов релаксации в нанокристаллических тонких магнитных пленках. Особенность проявляется в виде резкого уширения линии ферромагнитного резонанса (ФМР) на определенной частоте f 1, зависящей от магнитных характеристик пленки, и она наблюдается только в пленках, толщина которых превышает некоторое пороговое значение d min. Резкое уширение линии ФМР сопровождается значительным смещением резонансного поля, причем величина смещения меняет знак на частоте ~ f 1. Аналитически показано, что природа наблюдаемых эффектов связана с двухмагнонным процессом рассеяния спиновых волн на квазипериодической магнитной микроструктуре - «ряби» намагниченности. Полученные выражения для порогового значения толщины пленки d min и частоты максимального уширения линии ФМР f 1 хорошо согласуются с результатами численного расчета микромагнитной модели.
A resonant feature of the relaxation processes in nanocrystal magnetic thin films is revealed by numerical analysis for a micromagnetic model. This special feature is manifested through sharp broadening of the ferromagnetic resonance (FMR) line at the frequency f 1 depending on the magnetic characteristics of the film and is observed only in the films whose thickness exceeds a certain threshold value d min. The sharp broadening of the FMR lines is accompanied by a considerable displacement of the resonant field, and the displacement changes its sign at the frequency ~ f 1. It is analytically shown that the nature of the observable effects is connected with the two-magnon process of spin wave scattering on a quasi-periodic magnetic microstructure - magnetization ripples. The obtained expressions for the threshold value of the film thickness d min and the frequency f 1 of the maximal FMR line broadening are in good agreement with results of numerical calculation for the micromagnetic model.

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Переводная версия Two-Magnon Relaxation Processes in Nanocrystalline Thin Magnetic Films [Текст] / A. V. Izotov [et al.] // Russ. Phys. J. - 2019. - Vol. 61 Is. 12.- P.2313-2320

Держатели документа:
Институт физики им. Л.В. Киренского ФИЦ КНЦ СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Изотов, Андрей Викторович; Izotov, A. V.; Беляев, Борис Афанасьевич; Belyaev, B. A.; Соловьев, Платон Николаевич; Solovev, P. N.; Боев, Никита Михайлович; Boev, N. M.
}
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11.

Magnetoimpedance and magnetocapacitance of anion-substituted manganese chalcogenides / S. S. Aplesnin [et al.] // J. Appl. Phys. - 2017. - Vol. 121, Is. 7. - Ст. 075701, DOI 10.1063/1.4976097. - Cited References: 26. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 17-42-240079 r_sibir_a. This study was supported by the Russian Foundation for Basic Research project No. 16-52-00045 Bel_a and government work No. 114090470016. . - ISSN 0021-8979
Кл.слова (ненормированные):
Activation energy -- Chalcogenides -- Inorganic compounds -- Manganese -- Neel temperature -- Carrier relaxation time -- Impedance spectroscopy -- Low and high frequencies -- Magnetically ordered state -- Magneto-resistive effect -- Magnetocapacitance -- Pyroelectric current -- Temperature dependence -- Temperature distribution
Аннотация: The magnetoresistive effect in MnSe1−XTeX manganese chalcogenides with a substitute concentration of X = 0.1 is studied by impedance spectroscopy. The magnetoimpedance above the Neel temperature is found. The obtained experimental data are explained in the framework of the model of existence of magnetic nanoareas of two types. Two activation energies in the low- and high-frequency regions are determined from the frequency and temperature dependences of the permittivity described in the Debye model. The extrema found in the temperature dependence of the pyroelectric current are consistent with the maxima in the temperature dependence of magnetization. Temperature dependence of the carrier relaxation time is established. The magnetocapacitance of the MnSe1−XTeX solid solutions is found. The change in the carrier type above the Neel temperature and the temperature of the transition to the magnetically ordered state in the MnTe nanoarea is established.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, M. F. Reshetnev Corporation, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Center NAS, Minsk, Belarus

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Romanova, O. B.; Романова, Оксана Борисовна; Korolev, V. V.; Sitnikov, M. N.; Yanushkevich, K. I.
}
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12.

Belyaev, B. A.
Impedance spectroscopy study of the electrical properties of cation-substituted barium hexaaluminate ceramics / B. A. Belyaev, N. A. Drokin, V. A. Poluboyarov // Phys. Solid State. - 2018. - Vol. 60, Is. 2. - P. 274-280, DOI 10.1134/S1063783418020063. - Cited References:18 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
DIELECTRIC-RELAXATION
LIQUID-CRYSTALS
SPECTRA
Аннотация: We report on the behavior of frequency and temperature dependences of the impedance of a measuring cell in the form of a parallel-plate capacitor filled with barium hexaaluminate ceramics with four aluminum cations replaced by iron (BaO · 2Fe2O3 · 4Al2O3). The measurements have been performed in the frequency range of 0.5–108 Hz at temperatures of 20-375°C. A technique for determining the electrical properties of the investigated ceramics is proposed, which is based on an equivalent electric circuit allowing the recorded impedance spectra to be approximated with sufficiently high accuracy. The established spectral features are indicative of the presence of two electric relaxation times different from each other by three orders of magnitude. This fact is explained by the difference between the charge transport processes in the bulk of crystallites and thin intercrystallite spacers, for which the charge activation energies have been determined.

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Публикация на русском языке Беляев, Борис Афанасьевич. Исследование электрофизических характеристик катион-замещенной керамики гексаалюмината бария методом импедансной спектроскопии [Текст] / Б. А. Беляев, Н. А. Дрокин, В. А. Полубояров // Физ. тверд. тела. - 2018. - Т. 60 Вып. 2. - С. 269–275

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.
Russian Acad Sci, Inst Solid State Chem & Mechanochem, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Poluboyarov, V. A.; Беляев, Борис Афанасьевич
}
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13.

    Zobov, V. E.
    On the effect of an inhomogeneous magnetic field on high-frequency asymptotic behaviors of correlation functions of spin lattices / V. E. Zobov, M. M. Kucherov // JETP Letters. - 2018. - Vol. 107, Is. 9. - P. 553-557, DOI 10.1134/S002136401809014X. - Cited References: 39 . - ISSN 0021-3640. - ISSN 1090-6487
Рубрики:
HEISENBERG PARAMAGNET
   SYSTEMS
   TIME
   RELAXATION
   DYNAMICS
   SPECTRA
Аннотация: Singular points of spin autocorrelation functions on the imaginary time axis, which determine the arguments of exponential high-frequency asymptotic behaviors, have been analyzed. It has been shown that randomly distributed inhomogeneous magnetic fields expand the wings of spectra of autocorrelation functions and, thereby, intensify the heating of a system subjected to variable magnetic fields, which are used to create effective Hamiltonians or at the saturation of inhomogeneously broadened EPR lines.

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Публикация на русском языке Зобов, Владимир Евгеньевич. О влиянии неоднородного магнитного поля на высокочастотные асимптотики корреляционных функций спиновых решеток [Текст] / В. Е. Зобов, М. М. Кучеров // Письма в Журн. эксперим. и теор. физ. - 2018. - Т. 107 Вып. 9-10. - С. 578-582

Держатели документа:
Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Space & Informat Technol, Krasnoyarsk 660074, Russia.

Доп.точки доступа:
Kucherov, M. M.; Зобов, Владимир Евгеньевич
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14.

Berzhanskii, V. N.
Spin-phonon relaxation processes in CDCR2SE4 crystals / V. N. Berzhanskii, V. I. Ivanov // Fiz. Tverd. Tela. - 1980. - Vol. 22, Is. 4. - P. 1233-1235. - Cited References: 10 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
Ivanov, V. I.; Бержанский, Владимир Наумович
}
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15.

Berzhanskii, V. N.
Relaxation of uniform magnetization precession in collinear cubic ferrimagnets in the paramagnetic neighborhood of TC / V. N. Berzhanskii, V. I. Ivanov, A. V. Lazuta // JETP Letters. - 1990. - Vol. 52, Is. 9. - P. 483-487. - Cited References: 10 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
CDCR2SE4
Аннотация: The characteristic features of the critical spin dynamics of the cubic ferrimagnets Y3Fe5O12 and MnFe2O4 in the exchange temperature region above T(c) have been studied. The magnetic-dipole relaxation of the uniform magnetization of these ferrimagnets is shown to be suppressed. The relaxation channel due to the local uniaxial anisotropy, with a new temperature dependence, is the dominant channel.

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Держатели документа:
LV KIRENSKY PHYS INST,KRASNOYARSK,USSR
ИФ СО РАН

Доп.точки доступа:
Ivanov, V. I.; Lazuta, A. V.; Бержанский, Владимир Наумович
}
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16.

Vetrov, S. Ya.
Surface vibrations of FCC crystals with surface relaxation / S. Ya. Vetrov, V. F. Shabanov, M. E. Smokotin // Fiz. Tverd. Tela. - 1990. - Vol. 32, Is. 11. - P. 3240-3244. - Cited References: 11 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS

Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Smokotin, M. E.; Ветров, Степан Яковлевич
}
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17.

ISKHAKOV, R. S.
RELAXATION CHARACTERISTICS OF SPIN-WAVE RESONANCE-SPECTRA IN FERROMAGNETIC ALLOY-FILMS / R. S. ISKHAKOV, A. S. CHEKANOV, L. A. CHEKANOVA // Fiz. Tverd. Tela. - 1988. - Vol. 30, Is. 4. - P. 970-978. - Cited References: 19 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
CHEKANOV, A. S.; CHEKANOVA, L. A.
}
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18.

Averyanov, E. M.
Splitting of polarized impurity fluorescence bands in the steady-state spectrum of an isotropic solution / E. M. Averyanov // JETP Letters. - 1994. - Vol. 59, Is. 1. - P. 23-26. - Cited References: 12 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
RELAXATION
Аннотация: A difference is predicted between the peaks, nu(VV) and nu(VH), Of the polarized components J(VV)(nu) and J(VH)(nu) in the steady-state spectrum of impurity fluorescence in an isotropic solution. This difference would result from a temporal correlation between an orientational Brownian diffusion of excited fluorescing molecules and a structural relaxation of the surrounding matrix molecules.

WOS

Доп.точки доступа:
Аверьянов, Евгений МихайловичAver'yanov
}
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19.

AVERYANOV, E. M.
POLARIZED LUMINESCENCE SPECTRUM OF IMPURITY LIQUID-CRYSTAL - THE DEGENERATION LIFTED AND RENEWED BY RELAXATION / E. M. AVERYANOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1993. - Vol. 103, Is. 6. - P. 2018-2038. - Cited References: 45 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
RESOLVED FLUORESCENCE DEPOLARIZATION
   UNIAXIAL MOLECULAR SAMPLES
   NEMATIC ORDER PARAMETERS
   EXCITED-STATES
   SPECTROSCOPY
   MEMBRANES
   FLUOROPHORES
   ORIENTATION
   TRANSITION
   DYES
Аннотация: The general molecular-statistical approach is proposed for the analysis or the polarized luminescence spectrum for impurity molecule of an arbitrary symmetry in the nematic liquid crystal matrix. On the particular example of uniaxial molecules the influence of features of the molecular electron structure, orientational statistics, molecular dynamics, and features of the anisotropic intermolecular coupling upon the positions of maxima v(if)(t) of impurity fluorescence polarized bands J(ij)(t) is studied. For the first time it is shown that all these factors significantly affect the degree of spectrum v(ij)(t) degeneration. For t not-equal 0, relaxation of excited impurity molecule subsystem toward the orientational distribution lifts a partial degeneration of spectrum v(ij), occuring at t not-equal 0, and renews partial or total degeneration of spectrum v(ij) in the limit t = infinity. In the lack of the spectrum v(ij) degeneration for t = 0 the relaxation may restore partial degeneration for t not-equal 0 as a function of the features of electron structure of molecules. The results of work explain the familiar experimental data on the number of independent component v(ij) and relation between them, on dependence of v(ij) upon the order of matrix and impurity subsystem, on the mutual relation in the positions of impurity band polarized component in the absorption and fluorescence spectra.

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}
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20.

Averyanov, E. M.
New features in the structural relaxation of a nematic liquid-crystal doped with luminescent impurity molecules / E. M. Averyanov, V. A. Gunyakov // JETP Letters. - 1993. - Vol. 57, Is. 8. - P. 492-496. - Cited References: 15 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
FLUORESCENCE DEPOLARIZATION
ORIENTATIONAL RELAXATION
FLUOROPHORES
Аннотация: A new approach is proposed for interpreting the polarized fluorescence spectra of an impure liquid crystal in which the orientational order of excited impurity molecules has undergone relaxation. This approach has also been realized experimentally. The new experimental data demonstrate a new relaxation process with a time scale on the order of 10(-11)-10(-9) s.

WOS

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Аверьянов, Евгений МихайловичAver'yanov
}
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