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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Komogortsev S. V., Iskhakov R. S., Chekanova L. A., Velikanov D. A., Kalinin Y. E., Sitnikov A. V.
Заглавие : Effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular nanocomposites
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2016. - Vol. 80, Is. 11. - P.1332-1334. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873816110186
Примечания : Cited References: 31. - This work was supported by the Russian Foundation for Basic Research, project nos. 15-08-06673, 16-03-00256, and RFBR-KRFS 15-42-04171.
Ключевые слова (''Своб.индексиров.''): annealing--magnetic properties--multilayers--spin waves--sputtering--concentration dependence--effect of annealing--granular composites--ion-beam sputtering--metal phase--spin wave resonances--ion beams
Аннотация: The effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular composites fabricated via ion-beam sputtering is investigated. It is established that annealing changes the concentration dependences of the ferromagnetic resonance field and linewidth and shifts the regions of metal phase concentration corresponding to the spin-wave resonance. © 2016, Allerton Press, Inc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kirenskii L. V., Izotova T. P., Salanskii N. M., Chistyakov N. S.
Заглавие : Magnetische mehrfachschichten
Коллективы : International colloquium on magnetic thin films
Разночтения заглавия :загл., сост. Phys. abstr.: Magnetic multilayers
Место публикации : Phys. Status Solidi. - 1966. - Vol. 17, Is. 2. - P.489-499
Примечания : Библиогр.: 20. - Phys. Abstr. - 1967. - Vol. 70, 15146
Аннотация: Es werden die Wechselwirkung zweier magnetischer FeNi und FeNiCo Schichten, die durch eine Si02-Schicht getrennt sind und einige Besonderheiten bei der Transmission elektromagnetischer Mikrowellen durch geschichtete dünne Magnetschichten, die durch Si02 getrennt sind, untersucht. Dabei wird gefunden, daß die Koerzitivkraft der Schichten in einem Vielschichtsystem abnimmt. Dieser Effekt wird durch lokale magnetische Wechselwirkung zwischen den magnetischen Schichten erklärt. Die Abnahme der Koerzitivkraft hängt von der Schichtdicke ab und wird durch den wechselnden Charakter der lokalen Wechselwirkung erklärt. Die Transmissions- und Reflexionskoeffizienten wurden gemessen; sie hängen von der Dicke der einzelnen Schichten und von der Gesamtdicke der ferromagnetischen Metallschichten in dem Vielschichtsystem ab. Die Transmissionskoeffizienten für Vielschichtsysteme sind wesentlich größer als bei der einzelnen Schicht. Die Transmission der Mikrowellenenergie durch die Vielschichtsysteme wird im Rahmen der gewöhnlichen Elektrodynamik erklärt.Это взаимодействие двух магнитных слоев FeNi и FeNiCo, которые отделены друг от друга слоем Si02 и некоторые особенности при передаче электромагнитных микроволн через слоистых магнитных тонких слоев, разделенных Si02 изучены. В этом случае, было обнаружено, что коэрцитивная сила слоев уменьшается в многослойной системе. Этот эффект объясняется локальным магнитным взаимодействием между магнитными слоями. Уменьшение коэрцитивной силы зависит от толщины слоя и объясняется меняющимся характером локального взаимодействия. Были измерены коэффициенты пропускания и отражения; они зависят от толщины каждого слоя и общей толщины ферромагнитных слоев металла в многослойной системе с. Коэффициент пропускания многослойных системах значительно больше, чем в одном слое. Передача микроволновой энергии через многослойные системы объясняется в обычной электродинамики.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ovchinnikov S. G.
Заглавие : Application of synchrotron radiation to the study of magnetic materials
Место публикации : Uspekhi Fiz. Nauk: MEZHDUNARODNAYA KNIGA, 1999. - Vol. 169, Is. 8. - P.869-887. - ISSN 0042-1294
Примечания : Cited References: 93
Предметные рубрики: X-RAY-SCATTERING
RESONANCE EXCHANGE SCATTERING
RARE-EARTH-METALS
CIRCULAR-DICHROISM
VALENCE STATES
CO/PD(111) MULTILAYERS
ABSORPTION-SPECTRA
PHASE-TRANSITIONS
SPIN POLARIZATION
EDGE STRUCTURE
Аннотация: The recent results of the studies of magnetic materials using synchrotron irradiation are reviewed. The influence of magnetic effects on X-ray scattering is studied for linearly and circularly polarized photons, and effects of magnetic circular dichroism on the spectra of X-ray absorption and photoelectron emission are discussed. It is shown that X-ray magnetooptics techniques provide fine details of crystal and magnetic structures and also make it possible to separate the spin and orbital contributions to the total moment; to obtain element- and position-sensitive information on the magnetic properties of the material; to visualize domains and domain walls; and to probe magnetization reversal dynamics. A comparison of magnetic neutron and X-ray methods is given.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V.
Заглавие : Scattering of electromagnetic waves by a metal lattice placed at the interface of two media
Место публикации : J. Commun. Technol. Electron.: Maik Nauka-Interperiodica Publishing, 2017. - Vol. 62, Is. 7. - P.750-758. - ISSN 10642269 (ISSN), DOI 10.1134/S1064226917070026
Примечания : Cited References: 24
Ключевые слова (''Своб.индексиров.''): bandpass filters--electromagnetic waves--frequency bands--frequency response--optical multilayers--reflection--dielectric layer--efficient control--electromagnetic analysis--lattice periods--metal lattices--optical bandpass filters--scattering matrices--scattering of electromagnetic waves--electromagnetic wave scattering
Аннотация: Simple formulas for determination of components of the scattering matrix of a plane electromagnetic wave incident along the normal onto a thin infinite 2D metal lattice with square windows placed at the interface of two media are derived for the first time. Frequency responses (FRs) of this structure calculated with the use of these formulas agree well with responses obtained by the numerical electromagnetic analysis of a 3D model in the case when the lattice period is less than one-half of the wavelength. The capability of efficient control of the FR of the analyzed structure by means of variation in the width of conductors and the lattice period enables application of this lattice for fabrication of a reflector with prescribed reflectivity. Such reflectors at interfaces of dielectric layers are required, for example, in the design of multilayer sufaces radio transparent in a specified frequency band or optical bandpass filters.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Shepeta N. A., Denisova E. A., Bucaemskii A. A., Tynchenko V. S., Gorodov A. A.
Заглавие : Stress-wave change in the copper structure: Covering magnetic response
Коллективы : International Conference on Mechanical Engineering, Automation and Control Systems
Место публикации : IOP Conf. Ser.: Mater. Sci. Eng. - 2019. - Vol. 560: 13th International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2018 (12 December 2018 through 14 December 2018, ) Conference code: 149903, Is. 1. - Ст.012158. - , DOI 10.1088/1757-899X/560/1/012158
Примечания : Cited References: 15
Аннотация: The work presents the results of the investigationof deformation processes occurring in copper after stress-wave influence. Structural changes analysis is carried out by direct research methods (X-ray phase analysis and optical microscopy) along and perpendicular to the spreading direction of the stress wave front in the copper foil plane. For more information, investigations have been conducted by an indirect method using ferromagnetic resonance of magnetic characteristics. As a magnetic covering, Co/Ni-type multilayer films are deposited on the copper foil, which makes it possible to apply magnetic research methods. The magnetic response of the multilayer covering correlates with the modification of the copper structure observed by direct methods. The information obtained in the course of research allows us to conclude that the wave character of the deformation processes occurring in copper is natural. The value and direction of structural modifications vary along the sample length as a function with a long-wave period is about 30 mm, which is consistent with the inhomogeneous distribution model of internal stresses. Throughout the sample length, alternating areas of stretching and compression of copper grains are fixed along the spreading direction of the stress wave front. The greatest stretching of the structural elements is observed at a distance equal to almost half the wavelength of the mechanical deformation field. Thus, the translational (shear) mode of the mechanical field of material plastic flow appears as the results of the investigation. © 2019 Published under licence by IOP Publishing Ltd.
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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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Altunin R. R., Moiseenko E. T., Zharkov S. M.
Заглавие : Structural phase transformations in Al/Pt bilayer thin films during the solid-state reaction
Коллективы : Russian Foundation for Basic Research [16-33-00475 mol_a]
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 7. - P.1413-1418. - ISSN 1063-7834, DOI 10.1134/S106378341807003X. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 26. - This study was supported by the Russian Foundation for Basic Research, project no. 16-33-00475 mol_a.
Предметные рубрики: AL
SYSTEM
MULTILAYERS
ALUMINUM
HEAT
Аннотация: A sequence of phases forming during the solid-phase reaction in Al/Pt bilayer thin films has been investigated by in situ electron diffraction. It is shown that the amorphous PtAl2 phase forms first during the solid-phase reaction initiated by heating. Upon further heating, PtAl2, Pt2Al3, PtAl, and Pt3Al crystalline phases sequentially form, which is qualitatively consistent with an effective formation heat model. The content of phases forming during the reaction has been quantitatively analyzed and the structural phase transformations have been examined.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kim P. D., Khalyapin D. L., Turpanov I. A., Li L. A., Beten'kova A. Ya., Kan S. V.
Заглавие : Anomalous temperature dependence of the magnetoresistance in Co/Cu multilayers
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 9. - P1688-1690. - ISSN 1063-7834, DOI 10.1134/1.1309452
Примечания : Cited References: 5
Предметные рубрики: FILMS
Аннотация: An anomalous temperature dependence of magnetoresistance (MR) of Co/Cu multilayer films with a similar to 3 Angstrom thick magnetic layer has been established experimentally. The temperature of the MR maximum T-max is shown to coincide with the Neel temperature. The variation of T-max with the Cu layer thickness follows an oscillatory pattern. (C) 2000 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Li L. A., Bykova L. E., Turpanov I. A., Kim P. D., Bondarenko G. V., Bondarenko G. N.
Заглавие : Self-propagating high-temperature synthesis in Pt/Co/MgO(001) epitaxial thin films
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 5. - P968-972. - ISSN 1063-7834, DOI 10.1134/1.1131321
Примечания : Cited References: 26
Предметные рубрики: PERPENDICULAR MAGNETIC-ANISOTROPY
LAYERED STRUCTURES
CO/PT
MULTILAYERS
SUPERLATTICES
PTFE(001)
GROWTH
PD/CO
Аннотация: The self-propagating high-temperature synthesis in the two-layer and multilayer Pt / Co(001) thin films has been investigated. It is shown that the initiation of the synthesis occurs at temperatures of 770-820 K. After the synthesis in the two-layer film samples, the PtCo(001) disordered phase exhibits an epitaxial growth at the interface between cobalt and platinum layers. In the multilayer Pt/Co(001) thin films, the self-propagating high-temperature synthesis also brings about the formation of the PtCo(001) disordered phase on the MgO(001) surface. Further annealing at a temperature of 870 K for 4 h results in the transition of the PtCo(001) disordered phase to the ordered phase. Rapid thermal annealing of the Pt/Co(001) multilayer films at a temperature of 1000 K leads to the formation of the CoPt3 phase. The magnetic characteristics change in accord with the structural transformations in Pt/Co film samples. (C) 2000 MAIK "Nauka/Interperiodica".
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ignatchenko V. A., Mankov Y. I., Maradudin A. A.
Заглавие : Wave spectrum of multilayers with finite thicknesses of interfaces
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 2000. - Vol. 62, Is. 3. - P2181-2184. - ISSN 0163-1829, DOI 10.1103/PhysRevB.62.2181
Примечания : Cited References: 24
Предметные рубрики: SPIN
EXCITATIONS
MEDIA
Аннотация: To describe a multilayer structure with arbitrary thicknesses of the interfaces between layers, we introduce a model in which the dependence of a material parameter along the axis of such a superlattice is described by a Jacobian elliptic sine function. Depending on the value of the modulus kappa of the elliptic function, the model describes the limiting cases of multilayers with sharp interfaces (kappa=1, d/l=0, where d is the thickness of the interface, l is the period of the superlattice) and of sinusoidal superlattices (kappa=0, d/l=1/4), as Well as all intermediate situations. We investigate the wave spectrum in such a superlattice. The dependences of the widths of the gaps in the spectrum at the boundaries of ail odd Brillouin zones on the ratio d/l are found. It is shown that the thicknesses of the interfaces can be determined if the experimental value of the relation between the widths of the first gap Delta v(1) and any other gap Delta v(n) is known.
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