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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : VALKOV V. V., MATSULYEVA G. N.
Заглавие : ANGULAR-DEPENDENCE OF FMR FREQUENCY IN STRONGLY ANISOTROPIC UNIAXIAL FERROMAGNETICS
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1988. - Vol. 94, Is. 1. - P217-226. - ISSN 0044-4510
Примечания : Cited References: 35
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tarasov A. S., Tarasov I. A., Yakovlev I. A., Rautskii M. V., Bondarev I. A., Lukyanenko A. V., Platunov M. S., Volochaev M. N., Efimov, Dmitriy D., Goikhman, Aleksandr Yu., Belyaev B. A., Baron F. A., Shanidze, Lev V., Farle M., Varnakov S. N., Ovchinnikov S. G., Volkov N. V.
Заглавие : Asymmetric interfaces in epitaxial off-stoichiometric Fe3+xSi1-x/Ge/Fe3+xSi1-x hybrid structures: Effect on magnetic and electric transport properties
Коллективы : RFBRRussian Foundation for Basic Research (RFBR); Krasnoyarsk Regional Fund of Science [20-42-243007, 20-42-240012]; Government of the Russian Federation [075-15-2019-1886]; Ministry of Science and Higher Education of the Russian Federation [FZWN-2020-0008]
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 1. - Ст.131. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12010131
Примечания : Cited References: 61. - The research was funded by RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, project number 20-42-243007, and by the Government of the Russian Federation, Mega Grant for the Creation of Competitive World-Class Laboratories (Agreement no. 075-15-2019-1886). I.A.T. and S.N.V. thank RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, project number 20-42-240012, for partial work related to the development of the simulation model of the pore autocorrelated radial distribution function coupled with the near coincidence site model, the Fe3+xSi1-x lattice distortion analysis, and processing Rutherford backscattering spectroscopy data. The Rutherford backscattering spectroscopy measurements were supported by the Ministry of Science and Higher Education of the Russian Federation (project FZWN-2020-0008)
Предметные рубрики: FILMS
ANISOTROPY
SI(001)
DEVICES
SURFACE
GROWTH
Аннотация: Three-layer iron-rich Fe3+xSi1-x/Ge/Fe3+xSi1-x (0.2 x 0.64) heterostructures on a Si(111) surface with Ge thicknesses of 4 nm and 7 nm were grown by molecular beam epitaxy. Systematic studies of the structural and morphological properties of the synthesized samples have shown that an increase in the Ge thickness causes a prolonged atomic diffusion through the interfaces, which significantly increases the lattice misfits in the Ge/Fe3+xSi1-x heterosystem due to the incorporation of Ge atoms into the Fe3+xSi1-x bottom layer. The resultant lowering of the total free energy caused by the development of the surface roughness results in a transition from an epitaxial to a polycrystalline growth of the upper Fe3+xSi1-x. The average lattice distortion and residual stress of the upper Fe3+xSi1-x were determined by electron diffraction and theoretical calculations to be equivalent to 0.2 GPa for the upper epitaxial layer with a volume misfit of -0.63% compared with a undistorted counterpart. The volume misfit follows the resultant interatomic misfit of |0.42|% with the bottom Ge layer, independently determined by atomic force microscopy. The variation in structural order and morphology significantly changes the magnetic properties of the upper Fe3+xSi1-x layer and leads to a subtle effect on the transport properties of the Ge layer. Both hysteresis loops and FMR spectra differ for the structures with 4 nm and 7 nm Ge layers. The FMR spectra exhibit two distinct absorption lines corresponding to two layers of ferromagnetic Fe3+xSi1-x films. At the same time, a third FMR line appears in the sample with the thicker Ge. The angular dependences of the resonance field of the FMR spectra measured in the plane of the film have a pronounced easy-axis type anisotropy, as well as an anisotropy corresponding to the cubic crystal symmetry of Fe3+xSi1-x, which implies the epitaxial orientation relationship of Fe3+xSi1-x (111)[0-11] || Ge(111)[1-10] || Fe3+xSi1-x (111)[0-11] || Si(111)[1-10]. Calculated from ferromagnetic resonance (FMR) data saturation magnetization exceeds 1000 kA/m. The temperature dependence of the electrical resistivity of a Ge layer with thicknesses of 4 nm and 7 nm is of semiconducting type, which is, however, determined by different transport mechanisms.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Izotov A. V., Belyaev B. A.
Заглавие : Determining in-plane magnetic anisotropy constants of thin films from angular fmr dependence
Коллективы : International scientific conference magnetic measurements
Место публикации : International Scientific Conference "Magnetic Measurements": program. - 2015. - Ст.P4-01
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Gavrishin I. V., Chekanova L. A.
Заглавие : Experimental study of the energy gap in the spin-wave spectrum in Co/Pd multilayer films
Место публикации : JETP Letters. - 1996. - Vol. 63, Is. 12. - P.989-993. - ISSN 0021-3640, DOI 10.1134/1.567132
Примечания : Cited References: 20
Предметные рубрики: LAYERED MAGNETIC-STRUCTURES
RESONANCE
MODES
FMR
Аннотация: The energy gap appearing in the spin-wave spectrum as a result of Bragg scattering by the modulation period q = 2 pi/(d(1)+d(2)) Of a one-dimensional superlattice is observed by the method of spin-wave resonance in Co/Pd multilayer films. It is shown that this gap is asymmetric: The ''positive'' deviation is from two to three times greater than the ''negative'' deviation. (C) 1996 American Institute of Physics.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Izotov A. V., Belyaev B. A., Boev N. M., Burmitskikh A. V., Skomorokhov G. V., Zharkov S. M., Solovev P. N.
Заглавие : Ferromagnetic resonance line broadening and shift effect in nanocrystalline thin magnetic films: Relation with crystalline and magnetic structure
Коллективы : RFBRRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund; JSC "NPP "Radiosviaz" [20-42-242901]; Ministry of Science and Higher Education of the Russian Federation [075-11-2019-054, FSRZ-2020-0011]
Место публикации : J. Alloy. Compd. - 2022. - Vol. 900. - Ст.163416. - ISSN 0925-8388, DOI 10.1016/j.jallcom.2021.163416. - ISSN 1873-4669(eISSN)
Примечания : Cited References: 52. - The reported study was funded by RFBR, the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund and JSC "NPP "Radiosviaz", project number 20-42-242901 and was supported by the Ministry of Science and Higher Education of the Russian Federation, agreement number 075-11-2019-054 dated 22.11.2019.; The electron microscopy investigations were conducted in the SFU Joint Scientific Center whose infrastructure was supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation
Предметные рубрики: SUSCEPTIBILITY
RIPPLE
ANISOTROPIES
ALLOYS
Аннотация: With the rapid development of telecommunication technologies and highly integrated electronic devices, researchers show great interest in nanocrystalline soft magnetic thin films with unique characteristics for microwave applications. An important direction of the current research in this field is the study of high-frequency magnetization dynamics that directly depends on the damping processes in a magnetic medium. This paper reports on the effect of sharp broadening and shift of the ferromagnetic resonance (FMR) line revealed experimentally in a 40-nm-thick nanocrystalline permalloy (Fe20Ni80) thin film at a frequency of about 5 GHz. The effect arises only in films with crystallite size exceeding some critical value Dcr. The micromagnetic simulation demonstrates that exchange and dipolar interactions between randomly oriented crystallites form in the film a quasiperiodic magnetic structure with a characteristic wavelength in the range from 36 nm to 3.3 µm. An analysis of the two-magnon scattering model and simulation results shows that the formed magnetic structure provides the energy transfer from uniform magnetization oscillations (uniform FMR) to spin waves, which results in an additional energy dissipation channel and, consequently, sharp FMR line broadening. A theoretical estimate of the critical crystallite size Dcr based on this model yields a value of ~14.3 nm for 40-nm-thick Fe20Ni80 films.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Rautskii M. V., Tarasov I. A., Varnakov S. N., Bondarev I. A., Lukyanenko A. V., Volkov N. V.
Заглавие : Ferromagnetic Resonance Study of the epitaxial Fe3Si(111) film on the Si(111) substrate
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.O5.5. - P.253. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 2
Ключевые слова (''Своб.индексиров.''): iron silicide--fmr--magnetic anisotropy
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tarasov A. S., Lukyanenko A. V., Yakovlev I. A., Tarasov I. A., Bondarev I. A., Sukhachev A. L., Shanidze L. V., Smolyakov D. A., Varnakov S. N., Ovchinnikov S. G., Volkov N. V.
Заглавие : Ferromagnetic silicides and germanides epitaxial films and multilayered hybrid structures: Synthesis, magnetic and transport properties
Колич.характеристики :14 с
Место публикации : Bull. Russ. Acad. Sci.: Phys. - 2023. - Vol. 87, Suppl. 1. - P.S133-S146. - ISSN 10628738 (ISSN), DOI 10.1134/S1062873823704518. - ISSN 19349432 (eISSN)
Примечания : Cited References: 54. - The authors thank the laboratory of Magnetic MAX Materials created under Megagrant project (agreement no. 075-15-2019-1886) for providing experimental equipment and the Collective Use Center at the Krasnoyarsk Scientific Center (Siberian Branch, Russian Academy of Sciences) for assistance. The authors also thank Professor B.A. Belyaev for FMR calculationsSupported by the Russian Science Foundation, grant no. 23-22-10033, https://rscf.ru/project/23-22-10033/, Krasnoyarsk Regional Fund of Science
Аннотация: Planar and vertical hybrid structures, which combine ferromagnetic and semiconductor layers are essential for implementation and study of spin transport phenomena in semiconductors, which is crucial for the advancement and development of spintronics. We have developed approaches for the synthesis of Fe3 + xSi1 – x epitaxial thin films and demonstrated the spin accumulation effect in multiterminal devices based on Fe3 + xSi1 – x/Si. Fe3 + xSi1 – x/Ge/Fe3Si and Fe3 + xSi1 – x/Ge/Mn5Ge3 multilayer hybrid structures were synthesized on a Si(111) substrate, study of their structural, magnetic and transport properties were performed. The effect of synthesis conditions on the growth of epitaxial structures and on their magnetic and transport properties was discussed. The results obtained may prove valuable in the development and fabrication of spintronic devices.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edelman I. S., Petrakovskaja E. A., Petrov D. A., Zharkov S. M., Khaibullin R. I., Nuzhdin V. I., Stepanov A. L.
Заглавие : FMR and TEM Studies of Co and Ni Nanoparticles Implanted in the SiO2 Matrix
Место публикации : Appl. Magn. Reson. - WIEN: SPRINGER WIEN, 2011. - Vol. 40, Is. 3. - С. 363-375. - MAY. - ISSN 0937-9347, DOI 10.1007/s00723-011-0218-4. - ISSN 1613-7507
Примечания : Cited Reference Count: 51. - Гранты: The work was supported in part by the Russian Foundation for Basic Research, grant no. 11-02-00972-a, Ministry of Education and Science of the Russian Federation, Federal Target Program "Scientific and scientific-pedagogical personnel of innovative Russia'', contract no. 02.740.11.0797, and State Program "Development of the Scientific Potential of the Higher Education School'', project no. 2.1.1/6038. S.M. Zharkov acknowledges the financial support of the Russian government contract no. 02.740.11.0568. The electron microscopy investigations were carried out at the Joint Center of the Siberian Federal University.Финансирующая организация: Russian Foundation for Basic Research [11-02-00972-a]; Ministry of Education and Science of the Russian Federation [02.740.11.0797]; State Program "Development of the Scientific Potential of the Higher Education School'' [2.1.1/6038]; Russian government [02.740.11.0568]
Предметные рубрики: FERROMAGNETIC-RESONANCE
MAGNETIC-PROPERTIES
THIN-FILMS
COBALT NANOPARTICLES
ION-IMPLANTATION
FINE PARTICLES
GRANULAR FILMS
ANISOTROPY
POLYIMIDES
RUTILE
Ключевые слова (''Своб.индексиров.''): energy dispersive x ray spectroscopy--face-centered cubic structure--fused silica plates--g factors--hexagonal close packing--high dose--high-dose implantation--implantation dose--implanted samples--line shape--magnetic parameters--matrix--metal nanoparticles--ni nanoparticles--nonsymmetric--out-of-plane--room temperature--spherical shape--subsurface layer--tem--temperature dependence--thin magnetic films--uniaxial magnetic anisotropy--cobalt--fused silica--magnetic anisotropy--nanoparticles--silica--silicon compounds--transmission electron microscopy--x ray spectroscopy--ferromagnetic resonance
Аннотация: Fused silica plates have been implanted with 40 keV Co+ or Ni+ ions to high doses in the range of (0.25-1.0) x 10(17) ions/cm(2), and magnetic properties of the implanted samples have been studied with ferromagnetic resonance (FMR) technique supplemented by transmission electron microscopy, electron diffraction and energy dispersive X-ray spectroscopy. The high-dose implantation with 3d-ions results in the formation of cobalt and nickel metal nanoparticles in the irradiated subsurface layer of the SiO2 matrix. Co and Ni nanocrystals with hexagonal close packing and face-centered cubic structures have a spherical shape and the sizes of 4-5 nm (for cobalt) and 6-14 nm (for nickel) in diameter. Room-temperature FMR signals from ensembles of Co and Ni nanoparticles implanted in the SiO2 matrix exhibit an out-of-plane uniaxial magnetic anisotropy that is typical for thin magnetic films. The dose and temperature dependences of FMR spectra have been analyzed using the Kittel formalism, and the effective magnetization and g-factor values have been obtained for Co- and Ni-implanted samples. Nonsymmetric FMR line shapes have been fitted by a sum of two symmetrical curves. The dependences of the magnetic parameters of each curve on the implantation dose and temperature are presented.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Martyanov O. N., Balaev D. A., Pylypenko O. V., Odnodvorets L. V., Chernov S. V., Nepijko S. A., Elmers H.-J., Schneider C. M., Schonhense G.
Заглавие : FMR investigations of two-dimensional periodic arrays of disc-shaped Co particles at different temperatures
Место публикации : J. Supercond. Nov. Magn.: Springer, 2015. - Vol. 28, Is. 12. - P.3587-3591. - ISSN 1557-1939, DOI 10.1007/s10948-015-3178-3
Примечания : Cited References: 14. - The authors gratefully acknowledge the financial support by the Center of Material and Technology (COMATT)
Предметные рубрики: FERROMAGNETIC-RESONANCE
FILMS
Ключевые слова (''Своб.индексиров.''): cobalt film--dipole-dipole interaction--ferromagnetic resonance (fmr)
Аннотация: Using ferromagnetic resonance method, we performed measurements of two-dimensional periodic arrays of disc-shaped cobalt particles with different diameters a=450 and 900 nm and the distance between them l=2a and 3a with temperature variation in the range T = 140 −300 K. The first derivative of the microwave absorption spectrum was registered. With the increase of T additional peaks on both sides from the main peak that move aside from it, all peaks show an increase of the intensity and a decrease of the width. Dependences of the resonance field on T shows saturation-like behavior with increasing temperature. They move to higher temperatures and show sharper behavior with a increase and l decrease, respectively. An increase of a leads to the intensity decrease and width increase of all three adsorption peaks.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : ISKHAKOV R. S., CHEKANOVA L. A., IVANOV V. I., POPOV G. V.
Заглавие : FMR LINEWIDTH IN AMORPHOUS CO-P AND FE-B ALLOYS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1985. - Vol. 27, Is. 9. - P2593-2596. - ISSN 0367-3294
Примечания : Cited References: 8
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shiyan Ya. G., Lee L. A.
Заглавие : FMR method for determining the magnetization of thin cobalt films
Коллективы : Российская академия наук, Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН, Казанский (Приволжский) федеральный университет, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022): Book of abstracts/ program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 1, Sect.: Spin dynamics and magnetic resonances. - Ст.B.P20. - P.296. - ISBN 978-5-94469-051-7
Примечания : Cited References: 5. - 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)
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Izotov A. V.
Заглавие : FMR study of the anisotropic properties of an epitaxial Fe3Si film on a Si(111) vicinal surface
Место публикации : JETP Letters. - 2016. - Vol. 103, Is. 1. - P.41-45. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364016010033
Примечания : Cited References: 28
Предметные рубрики: Thin magnetic-films
Ferromagnetic-resonance
Cobalt films
Metal-films
Spectrometer
Spintronics
Roughness
Аннотация: The anisotropic characteristics of an iron silicide (Fe3Si) epitaxial thin magnetic film grown on a Si(111) silicon vicinal surface with a misorientation angle of 0.14° have been measured by the ferromagnetic resonance method. It has been shown that the polar and azimuth misorientation angles of the crystallographic plane of the substrate can be determined simultaneously from the angular dependences of the ferromagnetic resonance field of the epitaxial film. The effective saturation magnetization of the film M eff = 1105 G and the constant of the cubic magnetocrystalline anisotropy K 4 = 1.15 × 105 erg/cm3 have been determined. The misorientation of the substrate plane leads to the formation of steps on the film surface and, as a result, to the appearance of uniaxial magnetic anisotropy of the magnetic dipole nature with the constant K 2 = 796 erg/cm3. Small unidirectional magnetic anisotropy (K 1 = 163 erg/cm3), which may be associated with symmetry breaking on the steps of the film and is due to the Dzyaloshinskii–Moriya interaction, has been detected.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Rautskii M. V., Ester M., Johnson D. C.
Заглавие : FMR study of the competition between shape anisotropy and magneto-crystalline anisotropy in CuCr2Se4 thin films
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.2PO-I1-47. - P.276
Примечания : Cited References: 2
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Stolyar S. V., Li O. A., Nikolaeva E. D., Vorotynov A. M., Velikanov D. A., Iskhakov R. S., Pyankov V. F., Boev N. M., Kryukova O. V.
Заглавие : Frequency-field dependences of FMR in NiFe2O4 superparamagnetic powders
Коллективы : International Baltic Conference on Magnetism, Балтийский федеральный университет им. И. Канта
Место публикации : V International Baltic Conference on Magnetism. IBCM: Book of abstracts. - 2023. - P.138
Примечания : Cited References: 4
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yakushkin S. S., Bukhtiyarova G. A., Dubrovskiy A. A., Knyazev Yu. V., Balaev D. A., Martyanov O. N.
Заглавие : In Situ FMR Study of the Selective H2S-Oxidation Stability of ε-Fe2O3/SiO2 Catalysts
Коллективы : Russian Science Foundation [17-12-01111]
Место публикации : Appl. Magn. Reson. - 2019. - Vol. 50, Is. 5. - P.725-733. - ISSN 0937-9347, DOI 10.1007/s00723-019-1109-3. - ISSN 1613-7507(eISSN)
Примечания : Cited References:32. - This work was supported by the Russian Science Foundation, project no. 17-12-01111.
Предметные рубрики: HYDROGEN-SULFIDE
CALCINATION TEMPERATURE
OXIDATION
PHASE
BED
Аннотация: The stability of a catalyst for partial H2S oxidation has been studied by the ferromagnetic resonance (FMR) technique combined with transmission electron microscopy, X-ray diffraction, Mössbauer spectroscopy, and magnetostatic investigations. The ε-Fe2O3 iron oxide nanoparticles supported on silica have been examined for their stability under the selective H2S oxidation conditions. The combination of the physicochemical methods has been used to study the state of reacted catalysts. The ε-Fe2O3 phase has been found to remain stable under the selective H2S oxidation conditions at temperatures up to 300 °C. The active phase state during the catalytic reaction has been explored using in situ FMR experiments. It has been established that the ε-Fe2O3 nanoparticles retain their structure and magnetic properties in the presence of H2S at high temperatures. During the in situ FMR experiments, the ε-Fe2O3 sulfidation process has been studied.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Izotov A. V., Belyaev B. A.
Заглавие : In-plane magnetic anisotropy constants of thin films from angular FMR dependence
Коллективы : "Modern Development of Magnetic Resonance", International conference
Место публикации : Mod. develop. of magn. resonance: abstracts of the intern. conf./ ed. Salikhov K. M. - Kazan, 2015. - С. 106
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Leksikov A., Naletov V. V., Klein O.
Заглавие : Local FMR spectroscopy
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-2008): June 20-25, 2008, Moscow : book of abstract. - 2008. - Ст.23PO-4-13. - p.490-491
Примечания : Библиогр.: 5
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18.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Yakushkin S. S., Balaev D. A., Shaikhutdinov K. A., Dubrovsky A. A., Bukhtiyarova G. A., Martyanov O. N.
Заглавие : Magnetic structure and size-effects in the system of epsilon-Fe2O3/SiO2 nanoparticles
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.O9.5. - P.383. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 6
Ключевые слова (''Своб.индексиров.''): ε-fe2o3 nanoparticles--superparamagnetic nanoparticles--size effect--fmr
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popov M. A., Zavislyak I. V., Movchan N. N., Gudim, I. A., Srinivasan G.
Заглавие : Mode splitting in 37-42 GHz barium hexaferrite resonator: Theory and device applications
Место публикации : IEEE Trans. Magn.: IEEE-Institute Electrical and Electronics Engineers, 2014. - Vol. 50, Is. 6. - Ст.4004507. - ISSN 0018-9464, DOI 10.1109/TMAG.2014.2298498. - ISSN 1941-0069
Примечания : Cited References: 34
Предметные рубрики: MILLIMETER-WAVE APPLICATIONS
GUIDE JUNCTION CIRCULATORS
FERRITE
MICROWAVE
PROPAGATION
CYLINDERS
Ключевые слова (''Своб.индексиров.''): dielectric resonance--ferromagnetic resonance (fmr)--hexagonal ferrite--isolator--phase shifter
Аннотация: Dielectric resonances in the 37-42 GHz frequency band in the single crystal barium hexaferrite that occur well below the ferromagnetic resonance (FMR) have been investigated. Sample dimensions have been chosen so that the mode frequency is lower than the spin-wave excitation (in this case, the natural domain resonance) frequency. Such dielectric mode frequencies, being a function of both permittivity and permeability, are magnetic field H tunable. Here, we report on below-FMR magnetodielectric resonance (MDR) axially magnetized barium hexaferrites and their H-tuning characteristics. Our studies reveal H-tuning by up to 2.5 GHz and the tuning is the largest when the ferrite is in a magnetically unsaturated state. A theory for the MDR is presented and a fairly good agreement between experimental data and theory has been obtained. Tunable millimeter wave phase shifters and isolators utilizing the below-FMR dielectric resonances have been demonstrated.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : MALTSEV V. K., REINGARDT A. E., TSIFRINOVICH V. I.
Заглавие : SECONDARY NUCLEAR ECHO SIGNALS DURING THE COMBINATION OF NMR AND FMR
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1982. - Vol. 24, Is. 1. - P3-8. - ISSN 0367-3294
Примечания : Cited References: 16
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