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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komogortsev S. V., Vazhenina I. G., Kleshnina S. A., Iskhakov R. S., Lepalovskij V. N., Pasynkova A. A., Svalov A. V.
Заглавие : Advanced characterization of FeNi-based films for the development of magnetic field sensors with tailored functional parameters
Место публикации : Sensors. - 2022. - Vol. 22, Is. 9. - Ст.3324. - ISSN 14248220 (ISSN), DOI 10.3390/s22093324
Примечания : Cited References: 35. - This research was funded by the Russian Science Foundation (RSF), project no. 22-29-00980, https://rscf.ru/en/project/22-29-00980/ (accessed on 20 March 2022)
Аннотация: Magnetometry and ferromagnetic resonance are used to quantitatively study magnetic anisotropy with an easy axis both in the film plane and perpendicular to it. In the study of single-layer and multilayer permalloy films, it is demonstrated that these methods make it possible not only to investigate the average field of perpendicular and in-plane anisotropy, but also to characterize their inhomogeneity. It is shown that the quantitative data from direct integral and local measurements of magnetic anisotropy are consistent with the direct and indirect estimates based on processing of the magnetization curves. The possibility of estimating the perpendicular magnetic anisotropy constant from the width of stripe domains in a film in the transcritical state is demonstrated. The average in-plane magnetic anisotropy field of permalloy films prepared by magnetron sputtering onto a Corning glass is almost unchanged with the thickness of a single-layer film. The inhomogeneity of the perpendicular anisotropy field for a 500 nm film is greater than that for a 100 nm film, and for a multilayer film with a total permalloy thickness of 500 nm, it is greater than that for a homogeneous film of the same thickness.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Iskhakov R. S., Vazhenina I. G., Yakovchuk V. Yu.
Заглавие : Angular and temperature dependences of ferromagnetic resonance in exchange-coupled FeNi/Dy/FeNi planar structures
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.: Spintronics and magnetic nanostructures. - Ст.A.P52. - P.196-197. - ISBN 978-5-94469-051-7
Примечания : Cited References: 1. - Support by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-42-240010 is acknowledged
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Rautskii M. V., Milyaev M. A., Naumova L. I., Klepikova A. S.
Заглавие : Angular dependences of uniform and non-uniform ferromagnetic resonance in multilayer films
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 1. - Ст.B.P19. - P.193. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 2. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No 18-42-243005 ”Synthesis and investigation of magnetic properties of gradient materials that are characterized by predetermine type of the magnetic parameter change”.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Yakovchuk V. Yu.
Заглавие : Characteristics of angular dependences of parameters of ferromagnetic and spin-wave resonance spectra of magnetic films
Место публикации : Phys. Met. Metallogr. - 2022. - Vol. 123, Is. 11. - P.1084-1090. - ISSN 0031918X (ISSN), DOI 10.1134/S0031918X2260124X. - ISSN 15556190 (eISSN)
Примечания : Cited References: 36
Аннотация: This paper presents the results of measuring the main parameters of the ferromagnetic and spin-wave resonance spectra (resonant field, linewidth, and intensity) of single-layer permalloy films at various angles in the out-of-plane orientation. The effect of the type of surface conditions on the angular dependence of the intensity ratio of adjacent modes is studied. A correspondence is established between the angle of the applied constant magnetic field with respect to the normal to the film and the change in the oscillation type from uniform to nonuniform. The revealed features of the angular dependences of the resonant field and the intensity of the spectral peak can be successfully used in the identification of microwave spectra. The fundamental magnetic parameters (effective magnetization, exchange interaction constant, surface anisotropy constant, and perpendicular anisotropy field) were determined.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yaroslavtsev R. N., Tyumentseva A.V., Velikanov D. A., Vazhenina I. G., Volochaev M. N., Stolyar S. V.
Заглавие : Fe3O4/Au nanocomposites: Characterization and cytotoxicity effects in vitro
Колич.характеристики :8 с
Место публикации : Mater. Chem. Phys. - 2024. - Vol. 322. - Ст.129524. - ISSN 02540584 (ISSN), DOI 10.1016/j.matchemphys.2024.129524. - ISSN 18793312 (eISSN)
Примечания : Cited References: 44
Аннотация: Magnetic nanocomposites containing iron oxide and gold components take great attention last years because of their relative biocompatibility and the ability to combine the magnetic properties of iron and the chemical bonding properties of gold for the possible drug delivery or diagnostics for various diseases. However, such particles have some toxicity to living cells, and the effect depends on many factors, including size, shape, the ratio of components in the composites, and the type of cells affected. And thus, the search for compositions and technologies for producing iron-gold particles with improved properties and reduced cytotoxicity remains relevant. The aim of the study was to synthesize and characterize Fe3O4/Au nanocomposites and evaluate their influence on living cells using the example of cell line HEK293. Fe3O4 nanoparticles (NPs) were synthesized by co-precipitation of Fe2+/Fe3+ water solution in alkaline conditions and then boiled with HAuCl4 in 0.1 M sodium citrate. The NPs properties were estimated by transmission electron microscopy (TEM), vibration magnetometry and ferromagnetic resonance (FMR). According to magnetometric measurements, nanoparticles are mainly in a superparamagnetic state. By fitting magnetization curves, the magnetic characteristics of nanoparticles were determined: saturation magnetization (59.3 emu/g) and magnetic anisotropy constant (K = 0.86·105 erg/cm3). The average particle size estimated from magnetic measurements was 8.7 nm. Considering the presence of a magnetically dead layer, this is in good agreement with the TEM results. The temperature dependence of the FMR linewidth was analyzed using two models. As a result, the parameters MSV and K/MS were determined. The models used showed good agreement. The values of the anisotropy constant (K = 1.06·105 erg/cm3) and the average particle size (6.8 nm) are estimated. The effect of the NPs on the HEK293 cells was studied by MTT-assay, flow cytometry and RT-PCR. The exposure with the NPs lead to a significant decrease of cell metabolic activity in HEK293 cell culture, but this effect was not accompanied by cell death. It was shown that the expression of antioxidant enzymes SOD1 and GPX1 was reduced at the mRNA stage. So the NPs synthesized may affect gene expression and metabolism of HEK293 cells, but this does not have fatal consequences for cell viability.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Chekanova L. A., Stolyar S. V., Yakovchuk V. Yu.
Заглавие : Ferromagnetic and spin-wave resonance in FexNi1-x (0∠x∠1) films
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Solid State Phenom.: Selected, peer reviewed papers/ ed.: N. Perov, A. Semisalova: Trans Tech Publications Ltd, 2015. - Vol. 233-234: Achievements in Magnetism. - P.682-685. - ISSN 1662-9779, DOI 10.4028/www.scientific.net/SSP.233-234.682. - ISSN 978-3-03835-482-6
Ключевые слова (''Своб.индексиров.''): electroless deposited method--ferromagnetic and spin-wave resonance--heterogeneity structure--invar alloy fe-ni--ferromagnetic materials--ferromagnetism--magnetism--multilayers--nickel--resonance--dispersion relations--electroless--feni alloys--invar alloy--magnetic heterogeneity--resonance field--spin wave resonances--wave spectroscopy--spin waves
Аннотация: We report ferromagnetic and spin-wave resonance measurements on the electroless deposited thin films of Fe-Ni alloy including alloy with invar content. From spin-wave resonance spectrum we defined the dependences of resonance fields on the number of mode. Analysis of this spectrum shows that positions of resonance fields are described by the Kittel dispersion relation. The type and the size of magnetic heterogeneity is estimated by the spin-wave spectroscopy technique. © (2015) Trans Tech Publications, Switzerland.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Rautskii M. V., Milyaev M. A., Naumova L. I.
Заглавие : Ferromagnetic and spin-wave resonance in the [CoFe/Cu]N superlattice thin (30-nm) film
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 1. - P.153-159. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783420010357
Примечания : Cited References: 44. - This study was supported by the Russian Foundation for Basic Research, Government of the Krasnoyarsk Krai, and Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project no. 18-42-243005 “Synthesis and Study of the Magnetic Properties of Gradient Materials with Different Types of a Specified Magnetic Parameter” and project “Spin” no. AAAA-A18-118020290104-2
Аннотация: Angular dependences of the microwave absorption spectra of a (CoFe/Cu)N multilayer film have been studied by the ferromagnetic and spin-wave resonance techniques. The critical angle θc indicating the ranges of excitation of uniform and nonuniform spin modes, type of the boundary conditions, and surface anisotropy and exchange coupling constants have been established. It is shown that the accuracy of identification of individual modes in the spectra plays a key role in the analysis of the detected curves.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Denisova E. A., Chekanova L. A., Komogortsev S. V., Vazhenina I. G., Iskhakov R. S., Nemtsev I. V.
Заглавие : Ferromagnetic resonance and magnetic anisotropy of 3-d metal rods with gradients of composition
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.135
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Chekanova L. A., Komogortsev S. V., Iskhakov R. S., Vazhenina I. G., Nemtsev I. V., Li O. A.
Заглавие : Ferromagnetic resonance and magnetic anisotropy of 3d-metal wires with composition gradients
Колич.характеристики :5 с
Место публикации : Bull. Russ. Acad. Sci.: Phys. - 2024. - Vol. 88, Is. 4. - P.531-535. - ISSN 10628738 (ISSN), DOI 10.1134/S1062873823706244. - ISSN 19349432 (eISSN)
Примечания : Cited References: 13
Аннотация: Results are presented from investigating the ferromagnetic resonance spectra of arrays of Co‒Ni and Co‒Fe‒Ni wires with different composition gradients, deposited into polycarbonate track-etched membranes. The effect interfaces and concentration gradients have on the effective fields of the investigated wires is examined. An anomalous angular dependence of the fields of ferromagnetic resonance is observed for the wire arrays at a pore density of ~18% in the membrane.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Yaroslavtsev R. N., Stolyar S. V., Chekanova L. A., Cheremiskina E. V., Vazhenina I. G.
Заглавие : Magnetic coatings of transition metals synthesized using arabinogalactan
Коллективы : International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials, Балтийский федеральный университет им. И. Канта
Место публикации : 4th International Baltic Conference on Magnetism (IBCM 2021): Book of abstracts. - 2021. - P.217
Примечания : Cited References: 2
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Vazhenina I. G., Yaroslavtsev R. N., Chekanova L. A., Cheremiskina E., Mikhlin Y.
Заглавие : Magnetic composite coatings FeC and NiC synthesized with arabinogalactan
Место публикации : IEEE Magn. Lett. - 2022. - Vol. 13. - Ст.2503505. - ISSN 1949307X (ISSN), DOI 10.1109/LMAG.2022.3164631
Примечания : Cited References: 23. - This work was supported by Russian Foundation for Basic Research, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science under Project 20-42-240010. The authors thank the Center of Collective Use of the Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences for the provided equipment
Аннотация: In this work, we investigated the ferromagnetic resonance spectra of metal/carbon composite coatings. FeC and NiC coatings were synthesized by electroless deposition using polysaccharide arabinogalactan. An analysis of the angular dependences of the resonance field showed that the coatings consist of three magnetic phases separated by a nonmagnetic phase of carbon.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Melnikov, Grigory Yu., Vazhenina I. G., Iskhakov R. S., Boev N. M., Komogortsev S. V., Svalov, Andrey V., Kurlyandskaya, Galina V.
Заглавие : Magnetic properties of FeNi/Cu-based lithographic rectangular multilayered elements for magnetoimpedance applications
Место публикации : Sensors. - 2023. - Vol. 23, Is. 13. - Ст.6165. - ISSN 14248220 (eISSN), DOI 10.3390/s23136165
Примечания : Cited References: 72. - This research was funded by the Russian Science Foundation (RSF), project no. 22-29-00980, https://rscf.ru/project/22-29-00980/ (accessed on 1 July 2023)Authors acknowledge the possibility to use the Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center “Krasnoyarsk Science Center SB RAS” for ferromagnetic resonance studies. We thank A.A. Yuvchenko and V.N. Lepalovskij for special support. The authors wish to thank the anonymous referees for their comments and suggestions
Аннотация: The rectangular elements in magnetoimpedance (MI) configuration with a specific nanocomposite laminated structure based on FeNi and Cu layers were prepared by lift-off lithographic process. The properties of such elements are controlled by their shape, the anisotropy induced during the deposition, and by effects associated with the composite structure. The characterizations of static and dynamic properties, including MI measurements, show that these elements are promising for sensor applications. We have shown that competition between the shape anisotropy and the in-plane induced anisotropy of the element material is worth taking into account in order to understand the magnetic behavior of multilayered rectangular stripes. A possibility of the dynamic methods (ferromagnetic and spin-wave resonance) to describe laminated planar elements having a non-periodic modulation of both structure and magnetic parameters of a system is demonstrated. We show that the multilayered structure, which was originally designed to prevent the development of a “transcritical” state in magnetic layers and to reach the required thickness, also induces the effects that hinder the achievement of the goal, namely an increase in the perpendicular magnetic anisotropy energy.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ustinov V. V., Rinkevich A. B., Vazhenina I. G., Milyaev M. A.
Заглавие : Microwave giant magnetoresistance and ferromagnetic and spin-wave resonances in (CoFe)/Cu nanostructures
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [AAAA-A18-118020290104-2, AAAA-A19-119012990095-0]; [17-1201002]
Место публикации : J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 1. - P.139-148. - ISSN 1063-7761, DOI 10.1134/S1063776120070171. - ISSN 1090-6509(eISSN)
Примечания : Cited References: 51. - This work was performed in terms of project Spin no. AAAA-A18-118020290104-2 and project Function no. AAAA-A19-119012990095-0. Section 3 was supported by the Russian Science Foundation, project no. 17-1201002
Предметные рубрики: COFE/CU SUPERLATTICES
MAGNETIC MULTILAYERS
CO/CU MULTILAYERS
FILMS
Аннотация: The microwave phenomena that occur in magnetic multilayer (CoFe)/Cu nanostructures, which have a giant magnetoresistance, are studied. The transmission of waves through a nanostructure is used to investigate the microwave giant magnetoresistance effect. The changes in the transmission coefficient at frequencies of 29–38 GHz are found to exceed the relative magnetoresistance, which distinguishes the system under study from the nanostructures studied earlier. Ferromagnetic and spin-wave resonances are used to study the angular dependences of the microwave absorption spectra of a multilayer (CoFe/Cu)n nanostructure. The following parameters are determined: the critical angle that determines the boundaries of the ranges of excitation of uniform and nonuniform spin modes, the type of boundary conditions describing the pinning of spins on the outer nanostructure surfaces, and the surface anisotropy and exchange interaction constants.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Milyaev M. A., Naumova L. I., Rautskii M. V.
Заглавие : Spin Wave Resonance in the [(Co0.88Fe0.12)/Cu]N Synthetic Antiferromagnet
Коллективы : Ministry of Science and Higher Education of the Russian Federation [AAAA-A18-118020290104-2]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-42-660018]
Место публикации : Tech. Phys. Lett. - 2020. - Vol. 46, Is. 11. - P.1076-1079. - ISSN 1063-7850, DOI 10.1134/S1063785020110140. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 19. - This study was carried out under a state order of the Ministry of Science and Higher Education of the Russian Federation (theme "Spin" no. AAAA-A18-118020290104-2) and supported in part by the Russian Foundation for Basic Research (project no. 20-42-660018)
Предметные рубрики: MAGNETIC-PROPERTIES
MAGNETORESISTANCE
SPECTRUM
FILMS
Аннотация: The [(Co0.88Fe0.12)/Cu]N synthetic antiferromagnet has been investigated by the spin wave resonance method over the entire range of angles of an external dc magnetic field to the film surface normal. The investigations have shown that the superlattice under study consists of two exchange-coupled magnetic subsystems, each manifested in the recorded spectra as a series of spin-wave modes. The dependence of the linear region of propagation of a standing spin-wave mode on the sample orientation in an external magnetic field has been established.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Chekanova L. A., Iskhakov R. S.
Заглавие : Spin-Wave Resonance Detection of Nanostructured Magnetic Alloy Inhomogeneities, Using the Example of Co–P and Co–Ni Planar Systems
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 6. - P.713-715. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873819060364
Примечания : Cited References: 12. - The reported study was funded by the Russian Foundation for Basic Research, the Government of Krasnoyarsk Krai, and the Krasnoyarsk Regional Fund of Science as part of research project no. 18-42-243005 “Synthesis and Investigation of Magnetic Properties of Gradient Materials Characterized by a Predetermined Type of the Magnetic Parameter Change.”
Аннотация: Inhomogeneous layered magnetic thin films of amorphous and nanocrystalline Со–Р and Co–Ni alloys are studied via spin-wave resonance. It is found that the formation of a magnetic potential profile specified over the coating thickness leads to characteristic modifications of the spin-wave resonance spectrum. Another important factor that determines the type of modification is the dominant magnetic parameter (the constant of magnetization or exchange coupling).
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Iskhakov R. S., Chekanova L. A.
Заглавие : Spin-wave resonance in chemically deposited Fe-Ni films: measuring the spin-wave stiffness and surface anisotropy constant
Коллективы : Russian Foundation for Basic Research [16-03-00256, 16-03-00969]
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 2. - P.292-298. - ISSN 1063-7834, DOI 10.1134/S1063783418020294. - ISSN 1090-6460(eISSN)
Примечания : Cited References:39. - This study was supported by the Russian Foundation for Basic Research, projects nos. 16-03-00256 and 16-03-00969.
Предметные рубрики: FERROMAGNETIC-RESONANCE
FERRIHYDRITE NANOPARTICLES
LAYERS
Аннотация: Single-layer Fe x Ni1 - x thin magnetic films have been investigated by the spin-wave resonance technique in the entire concentration range. The surface anisotropy and exchange stiffness constants for the films with a Ni content from 30 to 80 at % have been measured from the experimental standing spin wave spectra. The surface exchange spin wave penetration depth δ C = 20–30 nm has been determined from the dependences of the surface anisotropy and exchange coupling constants on the Fe20Ni80 film thickness in the range of 250–400 nm.
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vazhenina I. G., Chekanova L. A., Iskhakov R. S.
Заглавие : Spin-wave resonance in heterogeneous magnetic Co-Ni 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-K-46. - P.319
Примечания : Cited References: 3. - Support by regional start Autonomous institution “Krasnoyarsk regional Fund of support of scientific and scientific technical activity”also Russian Foundation for Basic Research, Grants № 16-03-00256 and № 16-03-00969 is acknowledged
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Chekanova L. A., Stolyar S. V., Vazhenina I. G.
Заглавие : Spin-wave resonance in multilayer FeNiP/Pd films
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2014. - Vol. 78, Is. 4. - P.328-329. - ISSN 1062-8738, DOI 10.3103/S1062873814040145. - ISSN 1934-9432
Примечания : Cited References: 6. - This work was performed by order of the RF Ministry of Education and Science.
Предметные рубрики: Nuclear Physics
Heavy Ions
Hadrons
Ключевые слова (''Своб.индексиров.''): chemical vapor deposition--pd film--spin wave resonances--multilayer films
Аннотация: Ferromagnetic and spin wave resonances are studied in FeNiP/Pd multilayer films obtained via chemical vapor deposition. The partial exchange interaction constant of polarized Pd films is found to be A Pd ≈ 1 × 10-7 erg/cm. © 2014 Allerton Press, Inc.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Stolyar S. V., Chekanova L. A., Vazhenina I. G.
Заглавие : Spin-Wave Resonance in One-Dimensional Magnonic Crystals by an Example of Multilayer Co-P Films
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 10. - P.1861-1867. - ISSN 1063-7834, DOI 10.1134/S1063783420100121. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 47
Предметные рубрики: FERROMAGNETIC-RESONANCE
SPECTRUM
MODES
INHOMOGENEITIES
Аннотация: Layered magnetic films of Co–P alloy, which are sets of laminates with certain atomic and chemical structures, have been investigated by spin-wave resonance. Coatings of two types were synthesized: a magnonic crystal (amorphous Co(P)/fcc Co(P))N and gradient Co(P) films. They exhibit two different modifications of the spin-wave resonance (SWR) spectrum. In the first case, the SWR spectrum is described as Hn(n) ~ n2 with a modification caused by the formation of the first stop band of the magnonic crystal. In the second case, the dependence of resonance fields Hn of the spin-wave modes on mode number n has the form of Hn(n) ~ n2/3. Thermal annealing leads to crystallization (amorphous alloy → fcc) and causes transformation of the layered films to the films of single-phase Co–P alloys, which is accompanied by a change in the shapes of the SWR spectra and occurrence of a “exchange kink” spectral modification.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Stolyar S. V., Yakovchuk V. Yu., Iskhakov R. S.
Заглавие : Spin-wave resonance of exchange-coupled three-layers FeNi/Cu/FeNi planar structures
Место публикации : Phys. Solid State. - 2022. - Vol. 64, Is. 14. - P.2334-2343. - ISSN 10637834 (ISSN), DOI 10.21883/PSS.2022.14.54336.170. - ISSN 10906460 (eISSN)
Примечания : Cited References: 37. - The work was done with financial support from the Russian Foundation for Basic Research, Government of Krasnoyarsk Krai and the Krasnoyarsk Krai Foundation of Science within the scientific project No. 20-42-240010
Аннотация: The spectrums of standing exchange spin waves into magnetic sandwich Ni80Fe20/Cu(tCu)/Ni80Fe20 were studied by spin-wave resonance method. The layer of diamagnetic Cu depending on its thickness tCu provided both positive and negative exchange interaction between ferromagnetic layers. It was shown that spin waves modes of SWR spectra which are described by well-known relation Hacres(n)~ n2 are standing acoustic exchange spin oscillations of individual ferromagnetic layers, regardless of a sign of interlayer exchange couple. It was detected that spin modes which are optical satellites of acoustic SWR peaks are described by the dependence of the resonance field Hopres(n)~ n5/2 or Hopres(n)~ n2 depending on the boundary conditions established on inner interfaces.
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