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Ignatchenko, V. A.
Crossing resonance of stochastically interacting wave fields / V. A. Ignatchenko, D. S. Polukhin // J. Exp. Theor. Phys. - 2013. - Vol. 116, Is. 2. - P. 206-222, DOI 10.1134/S1063776113020118. - Cited References: 42. - We are grateful to V. V. Val'kov and A. F. Sadreev for useful discussions. This work was supported by the Presidium of the Russian Academy of Sciences (Program no. 24.29), the Dynasty Foundation (Program for Support of Young Scientists), the Federal Target Program (state contract no. 14.B37.21.0730), and the Special Program for Siberian Federal University of the Ministry of Education and Science of the Russian Federation. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
CRYSTALS
   SYSTEMS
   ALLOYS
   MEDIA
Аннотация: The dynamic susceptibilities (Green's functions) of the system of two interacting wave fields of different physical natures with a stochastically inhomogeneous coupling parameter between them with zero mean value have been examined. The well-known self-consistent approximation taking into account all diagrams with noncrossing correlation/interaction lines has been generalized to the case of stochastically interacting wave fields. The analysis has been performed for spin and elastic waves. The results obtained taking into account the processes of multiple scattering of waves from inhomogeneities are significantly different from those obtained for this situation earlier in the Bourret approximation [R.C. Bourret, Nuovo Cimento 26, 1 (1962)]. Instead of frequencies degeneracy removal in the wave spectrum and the splitting of resonance peaks of dynamic susceptibilities, a wide single-mode resonance peak should be observed at the crossing point of the unperturbed dispersion curves. The fine structure appears at vertices of these wide peaks in the form of a narrow resonance on the Green's-function curve of one field and a narrow antiresonance on the vertex of the Green's-function curve of the other field.

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Публикация на русском языке Кроссинг-резонанс стохастически взаимодействующих волновых полей. - [S. l. : s. n.]

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

Доп.точки доступа:
Polukhin, D. S.; Полухин, Дмитрий Сергеевич; Игнатченко, Вальтер Алексеевич
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Ignatchenko, V. A.
Crossing resonance of wave fields in a medium with an inhomogeneous coupling parameter / V. A. Ignatchenko, D. S. Polukhin // J. Exp. Theor. Phys. - 2013. - Vol. 117, Is. 5. - P. 846-861, DOI 10.1134/S1063776113130049 . - ISSN 1063-7761
Аннотация: The dynamic susceptibilities (Green's functions) of the system of two coupled wave fields of different physical natures in a medium with an arbitrary relation between the mean value É and rms fluctuation ΔÉ of the coupling parameter have been examined. The self-consistent approximation involving all diagrams with noncrossing correlation lines has been developed for the case where the initial Green's function of the homogeneous medium describes the system of coupled wave fields. The analysis has been performed for spin and elastic waves. Expressions have been obtained for the diagonal elements G mm and G uu of the matrix Green's function, which describe spin and elastic waves in the case of magnetic and elastic excitations, and for the off-diagonal elements G mu and G um, which describe these waves in the case of cross excitation. Change in the forms of these elements has been numerically studied for the case of one-dimensional inhomogeneities with an increase in ΔÉ and with a decrease in É under the condition that the sum of the squares of these quantities is conserved: two peaks in the frequency dependences of imaginary parts of G mm and G uu are broadened and then joined into one broad peak; a fine structure appears in the form of narrow resonance at the vertex of the Green's function of one wave field and narrow antiresonance at the vertex of the Green's function of the other field; peaks of the fine structure are broadened and then disappear with an increase in the correlation wavenumber of the inhomogeneities of the coupling parameter; and the amplitudes of the off-diagonal elements vanish in the limit É → 0.

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Публикация на русском языке Кроссинг-резонанс волновых полей в среде с неоднородным параметром связи. - [S. l. : s. n.]

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

Доп.точки доступа:
Polukhin, D. S.; Полухин, Дмитрий Сергеевич; Игнатченко, Вальтер Алексеевич
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Electron Magnetic Resonance in nanoparticles of 3-d and 5-d metals formation in nanocarbon powders [Text] / Petrakovskaya E., Isakova V., Velikanov D., Isakov V. // EUROMAR 2008 Conference : St.Peterbsburg, 2008, [6-11 July]. - 2008. - p. 224

Доп.точки доступа:
Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Isakova, V. G.; Исакова, Виктория Гавриловна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Isakov, V.; "Магнитный резонанс для будущего", Международный конгресс(2008 ; июль ; Санкт-Петербург); "Euromar", International Conference(2008 ; Jul. ; St.-Peterburg)
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    Electron spin resonance in Cu1−xFexCr2Se4 nanoparticles synthesized with the thermal decomposition method / I. S. Edelman [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 436. - P. 21-30, DOI 10.1016/j.jmmm.2017.04.006. - Cited References: 34. - The paper was partially supported by the President of Russia (Grant #NSh-7559.2016.2). We also thank the Ministry of Science and Technology of Taiwan, Taiwan, and the Siberian Branch of RAS, Russian Federation (MOST 102-2112-M-153-002-MY3) for the financial support. . - ISSN 0304-8853
   Перевод заглавия: Электронный парамагнитный резонанс в наночастицах Cu1-xFexCr2Se4, синтезированных методом термического разложения
Кл.слова (ненормированные):
Anisotropy -- Association reactions -- Chromium compounds -- Decomposition -- Electrospinning -- Inorganic compounds -- Magnetic moments -- Magnetocrystalline anisotropy -- Nanoparticles -- Plates (structural components) -- Resonance -- Spin dynamics -- Synthesis (chemical) -- Temperature distribution -- Thermolysis -- Inter-particle interaction -- Nanoparticle (NPs) -- Resonance spectrum -- Single-crystalline -- Temperature behavior -- Temperature decrease -- Temperature dependence -- Thermal decomposition methods -- Electron spin resonance spectroscopy
Аннотация: IIn this paper, we present a study of the electron spin resonance (ESR) of nanoparticles (NPs) of Cu1−xFexCr2Se4 chalcogenides with x = 0, 0.2, and 0.4. NPs were synthesized via the thermal decomposition of metal chloride salts and selenium powder in a high-temperature organic solvent. According to the XRD and HRTEM data, the NPs were single crystalline nearly hexagonal plates with the structure close to CuCr2Se4 (Fd-3m, a = 10.337 Å). For x = 0 and 0.2, the NPs tend to form long stacks consisting of the plates “face to face” attached to each other due to the magnetostatic interparticle interaction. Only separate NPs were observed in the case of x = 0.4. Peculiarities were revealed in the ESR temperature behavior for the NPs with x = 0 and 0.2 consistent with the features in the temperature dependences of the NPs magnetization. The non-monotonous dependence of the resonance field Hres on the temperature with a kink near 130 K and the energy gap in the resonance spectrum depending on the type of nanoparticle compacting are the distinct peculiarities. One of the main factors is discussed in order to explain the peculiarities: the coexistence of two types of anisotropy in the Cu1−xFexCr2Se4 NPs, in-plain shape anisotropy and magnetocrystalline anisotropy with four easy axes, which increases strongly with the temperature decrease.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
National Pingtung University, Pingtung City, Pingtung County, Taiwan

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Zharkov, S. M.; Жарков, Сергей Михайлович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Tugarinov, V. I.; Тугаринов, Василий Иванович; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Petrov, D. A.; Петров, Дмитрий Анатольевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Lin, C. -R.; Chen, C. -C.; Tseng, Y. -T.; Hsu, H. -S.
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EMR spectra of borat glasses containing two types of transition ion simultaneously [Text] / Kliava J., Marbeuf A., Edelman I., Ivanova O., Petrakovskaja E., Ivantsov R. // EUROMAR 2008 Conference : St.Peterbsburg, 2008, [6-11 July]. - 2008. - p. 221

Доп.точки доступа:
Kliava, J.; Marbeuf, A.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; "Магнитный резонанс для будущего", Международный конгресс(2008 ; июль ; Санкт-Петербург); "Euromar", International Conference(2008 ; Jul. ; St.-Peterburg)
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    Influence of interface anisotropy on ferromagnetic resonance in CoP/(NiP)am/CoP films / G. S. Patrin, Y. G. Shiyan, A. V. Chzhan, S. A. Podorozhnyak // Mater. Res. Express. - 2021. - Vol. 8, Is. 5. - Ст. 056102, DOI 10.1088/2053-1591/abfcf5. - Cited References: 22. - This work was supported by the State order of the Ministry of Science and Higher Education of the Russian Federation (topic No. FSRZ-2020-0011) . - ISSN 2053-1591
   Перевод заглавия: Влияние интерфейсной анизотропии на ферромагнитный резонанс в пленках CoP/(NiP)am/CoP

РУБ Materials Science, Multidisciplinary
Рубрики:
MAGNETIC-ANISOTROPY
MULTILAYERS
Кл.слова (ненормированные):
multilayer films -- magnetic resonance -- interface anisotropy
Аннотация: The paper presents the results of ferromagnetic resonance studies of three-layer magnetic films, where the magnetic layers are amorphous magnetically soft CoP layers, and the intermediate non-magnetic spacer is amorphous NiP layer. We found that, regardless of the nonmagnetic layer thickness, the interlayer interaction is ferromagnetic. Perpendicular anisotropy forms at the interface between the CoP and NiP layers. It is reasonable to suppose that the interlayer interaction is long-range, what is not typical for systems with metallic non-magnetic spacers.

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Держатели документа:
Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
RAS, LV Kirensky Phys Inst, Fed Res Ctr, KSC,SB, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Krasnoyarsk State Agr Univ, Mira Pr 90, Krasnoyarsk 660049, Russia.

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Shiyan, Ya. G.; Шиян, Ярослав Германович; Chzhan, A. V.; Podorozhnyak, S. A.; State order of the Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
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    Magnetic resonance and dielectric properties of PbMnBO4 single crystal / A. I. Pankrats [и др.] // Spin Waves 2015, Int. Symp. : abstracts. - СПб., 2015. - P. 49
   Перевод заглавия: Магнитный резонанс и диэлектрические свойства монокристалла PbMnBO4

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Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Sablina, K. A.; Саблина, Клара Александровна; Tugarinov, V. I.; Тугаринов, Василий Иванович; Balaev, A. D.; Балаев, Александр Дмитриевич; Kolkov, M. I.; Колков, Максим Игоревич; "Spin Waves", International Simposium(2015 ; Jun. ; 7-13 ; Saint Petersburg); Физико-технический институт им. А.Ф. Иоффе РАН
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Magnetic resonance in a Cu-Cr-S structure / A. M. Vorotynov [et al.] // J. Exp. Theor. Phys. - 2013. - Vol. 117, Is. 5. - P. 879-884, DOI 10.1134/S1063776113130189 . - ISSN 1063-7761
Аннотация: A layered Cu-Cr-S structure composed of single-crystal CuCrS2 layers and thin CuCr2S4 plates embedded in them has been investigated by the magnetic resonance and scanning electron microscopy methods. The Curie temperature and saturation magnetization of the spinel phase of the investigated samples have been determined. The thickness of the CuCr 2S4 layers has been estimated. The dependence of the growncrystal topology on synthesis conditions has been established. An interpretation of the anomalous behavior of the magnetostatic oscillation intensity is offered.

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Публикация на русском языке Магнитный резонанс в структуре Cu-Cr-S. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Abramova, G. M.; Абрамова, Галина Михайловна; Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Tugarinov, V. I.; Тугаринов, Василий Иванович; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Sokolov, V. V.
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    Magnetic resonance in CuCr2S4 nanoclusters and nanocrystals / A. I. Pankrats [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 542-545, DOI 10.4028/www.scientific.net/SSP.233-234.542. - Cited References: 6 . - ISSN 1662-9779. - ISSN 978-3-038
   Перевод заглавия: Магнитный резонанс в нанокластерах и нанокристаллах CuCr2S4
Рубрики:
Achievements in magnetism
Кл.слова (ненормированные):
magnetic resonance -- nanocrystal -- superparamagnetic particles
Аннотация: Nanoclusters and nanocrystals of the room temperature magnetic spinel CuCr2S4 synthesized using a facile solution-based method were examined by magnetic resonance in a wide frequency range 9.6÷80 GHz and at temperatures down to 4.2 K. Decreasing of the resonance field and broadening of the resonance lines are found below ∼ 50 K for both the nanocluster and nanocube samples due to the freezing of magnetic moments of nanocubes and nanocrystalline particles constituting nanoclusters. Additional blocking temperature Tb≅300 K appears in nanoclusters due to the freezing of the magnetic moment of the entire cluster as a whole. Below this temperature, an additional low-field resonance line is found in the resonance spectra of nanoclusters at X-band.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Pankrats, A. I.; Панкрац, Анатолий Иванович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Tugarinov, V. I.; Тугаринов, Василий Иванович; Zharkov, S. M.; Жарков, Сергей Михайлович; Abramova, G. M.; Абрамова, Галина Михайловна; Zeer, G. M.; Зеер Г. М.; Ramasamy, Karthik; Gupta, Arunava; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
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10.

    Rudenko, R. Y.
    Magnetic vortices in ferromagnetic nanodots / R. Y. Rudenko, A. V. Chzhan // J. Sib. Fed. Univ. Math. Phys. - 2015. - Vol. 8, Is. 3. - P. 327-339 ; Журн. СФУ. Сер. "Математика и физика", DOI 10.17516/1997-1397-2015-8-3-327-339. - Cited References: . - ISSN 1997-1397
   Перевод заглавия: Магнитные вихри в ферромагнитных наноточках
Кл.слова (ненормированные):
Ferromagnetic resonance -- Magnetic films -- Nanodots -- наноточки -- магнитные пленки -- ферромагнитный резонанс
Аннотация: Studies in the field of magnetodynamics of vortex structures are reviewed. The prospects for application of ferromagnetic nanodots in high-speed nonvolatile memory are demonstrated. The creation of a static magnetic vortex is described. The available theoretical techniques for describing the motion of a magnetic vortex are discussed. The experimental and theoretical works on the vortex motion in dynamic magnetic fields of the gigahertz and subgigahertz frequency ranges are considered. The issue of the effect of the interaction between nanodots on the dynamic properties of nanodot arrays is raised. © Siberian Federal University. All rights reserved.
Обзор посвящен исследованиям в области магнитодинамики вихревых структур. В нем раскрывается перспектива использования ферромагнитных наноточек в создании быстродействующей энергонезависимой памяти. Объясняется механизм зарождения статического магнитного вихря. Показаны известные теоретические методы описания движения магнитного вихря. Проведен обзор экспериментальных и теоретических работ, посвященных движению вихря в динамических магнитных полях гигагерцового и субгигагерцового диапазона частот. Поднимается вопрос о влиянии междискового взаимодействия на динамические свойства массивов наноточек.

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Держатели документа:
Siberian Federal University, Svobodny 79, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Russian Academy of Sciences SB RAS, Akademgorodok, 50/38, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Chzhan, A. V.; Чжан, Анатолий Владимирович; Руденко, Роман Юрьевич

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