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Thermomagnetic data writing and erasing in DyCo/NiFe (TbFe/NiFe) film structures / V. A. Seredkin [et al.] // Tech. Phys. Lett. - 2004. - Vol. 30, Is. 10. - P. 820-822, DOI 10.1134/1.1813720. - Cited References: 10 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
SPIN-WAVE RESONANCE
ANISOTROPY
LAYERS
Аннотация: A new principle of data writing and erasing is proposed based on the exchange coupling between magnetic layers with mutually orthogonal orientations of the effective magnetization. The new method provides for a significant decrease in energy consumption. The possibility of using bilayer magnetic films of the (rare earth metal-transition metal)/NiFe type possessing unidirectional anisotropy as the media for thermomagnetic writing and erasing of magnetooptical data is studied. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН

Доп.точки доступа:
Seredkin, V. A.; Середкин, Виталий Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Frolov, G. I.; Фролов, Георгий Иванович; Yakovchuk, V. Y.
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Ignatchenko, V. A.
The effect of correlation-properties of inhomogeneities on plasma excitations in a metal / V. A. Ignatchenko, Yu. I. Mankov // J. Phys.: Condens. Matter. - 1991. - Vol. 3, Is. 31. - P. 5837-5845, DOI 10.1088/0953-8984/3/31/007. - Cited References: 21 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
SPIN-WAVES
ANISOTROPY
Аннотация: We theoretically investigate the manifestations of the non-monotonic character and anisotropic peculiarities of the correlation functions of the inhomogeneities in the dispersion law and damping of plasma waves. The following specific effects have been found: a change in the character of the modifications, dispersion law and damping for small wavenumbers; dependence of the plasma frequency shift on the direction of the wave propagation. We substantiate possibilities for developing the correlation spectroscopy of plasma waves which would enable us not only to measure a correlation radius of the inhomogeneities (this has been suggested earlier), but also to obtain information in the form of the correlation function.

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Держатели документа:
Kirensky Inst. of Phys., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mankov, Yu. I.; Маньков, Юрий Иннокентьевич; Игнатченко, Вальтер Алексеевич
}
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Tailoring the microwave properties of thin permalloy films using a periodically grooved substrate / A. V. Izotov, B. A. Belyaev, N. M. Boev [et al.] // Physica B. - 2022. - Vol. 629. - Ст. 413654, DOI 10.1016/j.physb.2021.413654. - Cited References: 50. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation, agreement number 075-11-2019054 dated November 22, 2019 . - ISSN 0921-4526. - ISSN 1873-2135

РУБ Physics, Condensed Matter
Рубрики:
FERROMAGNETIC-RESONANCE
   MAGNETIC-PROPERTIES
   ANISOTROPY
   FREQUENCY
Кл.слова (ненормированные):
Patterned film -- Topography-induced anisotropy -- Netzelmann approach -- Ferromagnetic resonance -- Damping parameter
Аннотация: Thin magnetic films with periodic surface topography are of special interest for microwave applications as their static and dynamic magnetic characteristics can be readily adjusted. In this paper, we explore the capabilities of a simple method for producing large-area periodically patterned films by creating regularly spaced grooves on a substrate using a diamond cutter. For 110-nm-thick films, it was found that the substrate-topography-induced magnetic anisotropy was inversely proportional to the pattern period, which in experimental samples varied from 5 to 20 mu m. Based on the Netzelmann theory, analytical expressions for demagnetization tensor components were obtained, which accord well with the experimental data. The measurements of the natural ferromagnetic resonance spectra demonstrated that the increase of the topography-induced magnetic anisotropy with the decrease of the pattern period led to the increase of the resonance frequency from 0.65 to 1.86 GHz, and to a decrease of the linewidth and effective damping parameter.

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

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Burmitskikh, A. V.; Бурмитских, Антон Владимирович; Leksikov, An. A.; Лексиков, Андрей Александрович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Solovev, P. N.; Соловьев, Платон Николаевич; Ministry of Science and Higher Education of the Russian Federation [075-11-2019054]
}
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Frolov, G. I.
Studying the mechanism of exchange coupling in ferro/ferrimagnet NiFe/DyCo film structures / G. I. Frolov, V. A. Seredkin, V. Y. Yakovchuk // Tech. Phys. Lett. - 2010. - Vol. 36, Is. 1. - P. 57-59, DOI 10.1134/S1063785010010189. - Cited References: 7. - This study was supported in part by the Program for Development of the Scientific Potential of Russian Universities (project no. RNP.2.1.1/4399). . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
ANISOTROPY
Аннотация: Dependence of the magnetic and magnetooptical properties of an exchange-coupled NiFe/DyCo bilayer system on the thickness (t (DyCo)) of a magnetically hard layer has been studied. It is established that the unidirectional anisotropy vanishes at t (DyCo) similar to 400 , while the coercive field in the magnetically soft layer becomes comparable to the exchange-induced field shift. In this case, the DyCo layer magnetization is almost parallel to the film plane, whereas a reference DyCo film exhibits a perpendicular anisotropy. A model of the magnetic state of layers in the ferro/ferrimagnetic layer structure under consideration is proposed, which assumes that a 180A degrees domain wall is formed at the interface upon magnetization reversal in the magnetically soft layer.

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Держатели документа:
[Frolov, G. I.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Siberian State Aerosp Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Seredkin, V. A.; Середкин, Виталий Александрович; Yakovchuk, V. Y.; Фролов, Георгий Иванович
}
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Structural features and magnetic properties of Co-W films / V. O. Vas'kovskiy, M. N. Volochaev, A. N. Gorkovenko [et al.] // Phys. Solid State. - 2021. - Vol. 63. Is. 7. - P. 1113-1119, DOI 10.1134/S1063783421070246. - Cited References: 23. - This work was carried out with support by the Ministry of Science and Higher Education of the Russian Federation, topic no. FEUZ-2020-0051. . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
GIANT MAGNETORESISTANCE
ANISOTROPY
Кл.слова (ненормированные):
film -- doping -- substrate -- structure -- magnetic properties
Аннотация: The structure and magnetic properties of thin polycrystalline films of Co100 – xWx (0 ≤ x ≤ 30) deposited by magnetron sputtering on glass substrates are investigated including those containing buffer layers of Ta, W, and Ru. It is found that films of pure Co are non-single-phase and contain hcp and fcc crystalline modifications. Doping leads to an increase in the concentration of the fcc phase and an enhancement of the texture of the (111) type, and subsequently to the amorphization of the films. The buffer layers influence to a certain extent on the depth and concentration localization of these transformations. A characteristic feature of the magnetism of Co–W films is a significant perpendicular component in the macroscopic magnetic anisotropy, which leads to a “supercritical” magnetic state. It is shown that its source is the textured fcc phase, the crystalline anisotropy of which is enhanced as a result of doping of cobalt with tungsten.

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Публикация на русском языке Структурные особенности и магнитные свойства пленок Co–W [Текст] / В. О. Васьковский, М. Н. Волочаев, А. Н. Горьковенко [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 7. - С. 915-922

Держатели документа:
Ural Fed Univ, Ekaterinburg, Russia.
Russian Acad Sci, Inst Met Phys, Ural Branch, Ekaterinburg, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Vas'kovskiy, V. O.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Gorkovenko, A. N.; Kravtsov, E. A.; Lepalovskij, V. N.; Feshchenko, A. A.; Ministry of Science and Higher Education of the Russian Federation [FEUZ-2020-0051]
}
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Structural and magnetic features of solid-phase transformations in Mn/Bi and Bi/Mn films / V. G. Myagkov [et al.] // JETP Letters. - 2016. - Vol. 103, Is. 4. - P. 254-259, DOI 10.1134/S0021364016040111. - Cited References: 47. - This work was supported by the Russian Foundation for Basic Research (project nos. 15-02-00948 and 16-03-00069), by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. SP-317.2015.1), and by the Foundation for Promotion of the Development of Small Scientific and Engineering Enterprises (project nos. 0011727 and 6662GU2015, program Umnik). The electron microscopy studies were performed on the equipment of the Shared Usage Center, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences. . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
High-temperature synthesis
   Epitaxial thin-films
   State synthesis
   Martensitic transformations
   Vacuum depositions
   MnBi filmsd
   Bi
   System
   Anisotropy
   Compound
Аннотация: Solid-phase transformations at different annealing temperatures in Mn/Bi (Mn on Bi) and Bi/Mn (Bi on Mn) films have been studied using X-ray diffraction, electron microscopy, and magnetic measurements. It has been shown that the synthesis of the α-MnBi phase in polycrystalline Mn/Bi films begins at a temperature of ~120°C and the Mn and Bi layers react completely at 300°C. The resulting α-MnBi(001) samples have a large perpendicular magnetic anisotropy (Ku ≃ 1.5 × 107 erg/cm3) and a coercive force H HC ~ 3 kOe. In contrast to Mn/Bi, the ferromagnetic α-MnBi phase in Bi/Mn films is not formed even at annealing processes up to 400°C and Mn clusters are formed in a Bi melt. This asymmetry in phase transformations occurs because chemosorbed oxygen existing on the surface of the Mn film in Bi/Mn films suppresses a solid-phase reaction between Mn and Bi. The analysis of the results obtained implies the existence of new low-temperature (~120°C) structural transformation in the Mn–Bi system. © 2016, Pleiades Publishing, Inc.

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Публикация на русском языке Структурные и магнитные особенности твердофазных превращений в Mn/Bi и Bi/Mn пленках [Текст] / В. Г. Мягков [и др.] // Письма в ЖЭТФ : Наука, 2016. - Т. 103 Вып. 4. - С. 280-285

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, pr. Gazety Krasnoyarskii Rabochii, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Yakovchuk, V. Yu.; Яковчук, Виктор Юрьевич; Zhigalov, V. S.; Жигалов, Виктор Степанович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Matsynin, A. A.; Мацынин, Алексей Александрович; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Seredkin, V. A.; Середкин, Виталий Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Bondarenko, G. N.; Бондаренко, Галина Николаевна
}
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Solid-state synthesis, structural and magnetic properties of CoPd films / V. G. Myagkov [et al.] // Phys. Solid State. - 2015. - Vol. 57, Is. 5. - P. 1014-1022, DOI 10.1134/S1063783415050236. - Cited References:57. - This study was supported in part by the Russian Foundation for Basic Research (project no. 15-02-00948). . - ISSN 1063. - ISSN 1090-6460. -

РУБ Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SYNTHESIS
   EPITAXIAL THIN-FILMS
   CENTERED-CUBIC CO
   MARTENSITIC TRANSFORMATIONS
   PHASE SYNTHESIS
   SINGLE-CRYSTAL
   FE FILMS
   CO/PD MULTILAYERS
   RECORDING MEDIA
   ANISOTROPY
Аннотация: The results of the investigation of the structural and magnetic properties of CoPd films with equiatomic composition have been presented. The films have been synthesized by vacuum annealing of polycrystalline Pd/Co and epitaxial Pd/α-Co(110) and Pd/β-Co(001) bilayer samples. It has been shown that, for all samples, the annealing to 400°C does not lead to the mixing of layers and the formation of compounds. A further increase in the annealing temperature results in the formation of a disordered CoPd phase at the Pd/Co interface, which is fully completed after annealing at 650°C. The epitaxial relationships between the disordered CoPd phase and the MgO(001) substrate are determined as follows: CoPd(110)〈1¯11|| MgO(001)〈100〉 and CoPd(001)[100] || MgO(001)[100], which are formed in the Pd/αCo(110) and Pd/βCo(001) films, respectively. According to the calculations, the first magnetocrystalline anisotropy constants of the disordered CoPd phase for Pd/αCo(110) and Pd/βCo(001) samples have close values: = –(1.6 ± 0.4) × 105 erg/cm3. A possible mechanism of the solidstate synthesis of the CoPd alloy is proposed.

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Публикация на русском языке Твердофазный синтез, структурные и магнитные свойства пленок CoPd [Текст] / В. Г. Мягков [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2015. - Т. 57 Вып. 5. - С. 999-1006

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Zhigalov, V. S.; Жигалов, Виктор Степанович; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Bondarenko, G. N.; Бондаренко, Галина Николаевна; Matsynin, A. A.; Мацынин, Алексей Александрович; Rybakova, A. N.; Russian Foundation for Basic Research [15-02-00948]
}
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    Ivanov, A. A.
    Self-organization of the magnetization in ferromagnetic nanowires / A. A. Ivanov, V. A. Orlov // J. Magn. Magn. Mater. - 2017. - Vol. 440. - P. 217-220, DOI 10.1016/j.jmmm.2016.12.053. - Cited References:21. - This study was supported by RFBR, Project no. 14-02-00238-a . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Самоорганизация намагниченности в ферромагнитных нанопроволоках

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SYSTEM
ANISOTROPY
Кл.слова (ненормированные):
Domain wall -- Nanowire -- Magnetic inhomogeneities -- Stochastic domains
Аннотация: In this work we demonstrate the occurrence of the characteristic spatial scale in the distribution of magnetization unrelated to the domain wall or crystallite size with using computer simulation of magnetization in a polycrystalline ferromagnetic nanowire. This is the stochastic domain size. We show that this length is included in the spectral density of the pinning force of domain wall on inhomogeneities of the crystallographic anisotropy. The constant and distribution of easy axes directions of the effective anisotropy of stochastic domain, are analytically calculated.

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Доп.точки доступа:
Orlov, V. A.; Орлов, Виталий Александрович; RFBR [14-02-00238-a]; 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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Val'kov, V. V.
Quantum transport through a multilevel magnetic structure with multiple inelastic scattering in a magnetic field taken into account / V. V. Val'kov, S. V. Aksenov, E. A. Ulanov // Low Temp. Phys. - 2015. - Vol. 41, Is. 2. - P. 98-105, DOI 10.1063/1.4913204. - Cited References:33. - This work was supported by the Program of the Presidium of RAS "Quantum mesoscopic and disordered systems" and Russian Foundation for Basic Research (Grant Nos. 13-02-00523, 13-02-98013, and 14-02-31280).One of the authors (S.V.A.) is grateful to the grant of the President of the Russian Federation MK-526.2013.2 and the scholarship of the President of the Russian Federation SP-6361.2013.5 for the support. . - ISSN 1063. - ISSN 1090-6517. -

РУБ Physics, Applied
Рубрики:
SINGLE-MOLECULE
   SPECTROSCOPY
   ATOM
   ANISOTROPY
Аннотация: We present a solution for the problem of quantum electron transport through a magnetic atom adsorbed inside a break junction with paramagnetic metal electrodes. In agreement with experimental data, it was assumed that the conduction electrons experience inelastic scattering by the adsorbate due to s–d(f)-exchange interaction. The Keldysh technique was employed to obtain a general expression describing a current through the multilevel structure at finite temperatures in terms of the nonequilibrium Green's function. The use of the atomic representation allowed to exactly account for the non-equidistant structure of the energy spectrum of a magnetic atom and to simplify substantially the application of the Wick theorem for construction of the nonequilibrium diagrammatic technique for the Hubbard operators. The calculation of the current-voltage characteristics of the magnetic adatom in the tunnel regime at low temperatures revealed the presence of regions with a negative differential conductance in a magnetic field.

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Публикация на русском языке Вальков, Валерий Владимирович. Квантовый транспорт через многоуровневую магнитную структуру при учете процессов многократного неупругого рассеяния в магнитном поле [Текст] / В. В. Вальков, С. В. Аксенов, Е. А. Уланов // Физ. низких температур : Физико-технический институт низких температур им. Б. И. Веркина НАН Украины, 2015. - Т. 41 Вып. 2. - С. 129-138

Держатели документа:
Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Aerosp Univ, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Aksenov, S. V.; Аксенов, Сергей Владимирович; Ulanov, E. A.; Вальков, Валерий Владимирович; Program of the Presidium of RAS "Quantum mesoscopic and disordered systems"; Russian Foundation for Basic Research [13-02-00523, 13-02-98013, 14-02-31280]; Russian Federation [MK-526.2013.2, SP-6361.2013.5]
}
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10.

Polarizing properties of a stretched film of a polymer-dispersed liquid crystal with a surfactant dopant / M. H. Egamov [et al.] // J. Opt. Technol. - 2014. - Vol. 81, Is. 7. - P. 414-417, DOI 10.1364/JOT.81.000414. - Cited References: 17. - This work was carried out with the partial support of Grant 12-03-00816 of the Russian Foundation for Basic Research, Grants 24.32 and 24.29 of the Presidium of the Russian Academy of Sciences, and joint project 30 of the Siberian Section of the Russian Academy of Sciences (SO RAN), and a joint project of the SO RAN and the National Scientific Council of Taiwan. . - ISSN 1070-9762. - ISSN 1091-0786

РУБ Optics
Рубрики:
ANISOTROPY
Аннотация: The transmittance anisotropy of a composite polymer-liquid-crystal film has been studied as it varies with the degree to which it is elongated. The composite film includes polyvinyl alcohol, the nematic liquid crystal 4-n-pentyl-4'-cyanobiphenyl, and the surfeiting cetyltrimethylammonium bromide, which initiates homeotropic adhesion of the nematic to the surface of the polymer. It is shown that, when the film is uniaxially stretched, the transmittance of the orthogonally polarized component of directly transmitted radiation and accordingly the degree of polarization abruptly increase, reaching saturation when it is stretched to twice its length. Such variation of the film's macroscopic optical properties can be caused by an orientational-structural transition to a homogeneous configuration of the director in deformed droplets of the nematic and makes it possible to substantially improve the optical characteristics of light polarizers based on such composite media. (C) 2014 Optical Society of America.

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Публикация на русском языке Поляризующие свойства вытянутой пленки капсулированного полимером жидкого кристалла с примесью сурфактанта [Текст] / М. Х. Эгамов [и др.] // Оптич. журн. : Санкт-Петербургский НИУ ИТМО, 2014. - Т. 81 № 7. - С. 67-71

Доп.точки доступа:
Egamov, M. H.; Эгамов, Мухтор Хасанович; Gerasimov, V. P.; Герасимов, Виктор Петрович; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Loiko, V. A.; Russian Foundation for Basic Research [12-03-00816]; Presidium of the Russian Academy of Sciences [24.32, 24.29]; Siberian Section of the Russian Academy of Sciences (SO RAN); SO RAN; National Scientific Council of Taiwan
}
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