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Belyaev, B. A.
Growth simulation and structure analysis of obliquely deposited thin films / B. A. Belyaev, A. V. Izotov, P. N. Solovev // Russ. Phys. J. - 2016. - Vol. 59, Is. 2. - P. 301-307, DOI 10.1007/s11182-016-0771-2. - Cited References:27. - This work was supported in part by State Assignment for R&D A3.528.2014K of Ministry of Education and Science of the Russian Federation to Siberian Federal University in 2014. . - ISSN 1064-8887. - ISSN 1573-9228

РУБ Physics, Multidisciplinary
Рубрики:
GLANCING ANGLE DEPOSITION
EVAPORATION
ANISOTROPY
Кл.слова (ненормированные):
oblique angle deposition -- simulation of film growth -- Monte Carlo method
Аннотация: Based on the Monte Carlo method, a model of growth of thin films prepared by oblique angle deposition of particles is constructed. The morphology of structures synthesized by simulation is analyzed. To study the character of distribution of microstructural elements (columns) in the film plane, the autocorrelation function of the microstructure and the fast Fourier transform are used. It is shown that with increasing angle of particle incidence, the film density monotonically decreases; in this case, anisotropy arises and monotonically increases in the cross sections of columns, and the anisotropy of distribution of columns in the substrate plane also increases.

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Публикация на русском языке Беляев, Борис Афанасьевич. Исследование процесса роста и анализ структуры тонких, наклонно осаждаемых пленок [Текст] / Б. А. Беляев, А. В. Изотов, П. Н. Соловьев // Изв. вузов. Физика : Томский государственный университет, 2016. - Т. 59 № 2. - С. 120-125

Держатели документа:
Russian Acad Sci, LV Kirensky Inst Phys, Siberian Branch, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Siberian State Aerosp Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич; Ministry of Education and Science of the Russian Federation [A3.528.2014K]
}
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Belyaev, B. A.
Influence the technological conditions of vacuum deposition of thin magnetic films on produced samples properties [Текст] / B. A. Belyaev, A. V. Izotov // V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism : abstracts. - Vladivostok : FEFU, 2013. - P. 184 . - ISBN 978-5-7444-3124-2

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; Sept. ; 15-21 ; Vladivostok)
}
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Belyaev, B. A.
Influence the technological conditions of vacuum deposition of thin magnetic films on produced samples properties [Текст] / B. A. Belyaev, A. V. Izotov, P. N. Solovev // V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism : abstracts. - Vladivostok : FEFU, 2013. - P. 229 . - ISBN 978-5-7444-3124-2

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; Sept. ; 15-21 ; Vladivostok)
}
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    Belyaev, B. A.
    Numerical simulation of magnetic microstructure in nanocrystalline thin films with the random anisotropy / B. A. Belyaev, A. V. Izotov, P. N. Solovev // J. Sib. Fed. Univ. Math. Phys. - 2017. - Vol. 10, Is. 1. - P. 132-135 ; Журн. СФУ. Сер. "Математика и физика", DOI 10.17516/1997-1397-2017-10-1-132-135. - Cited References: 10. - This work was supported by Russian Science Foundation (project no. 16-12-10140). . - ISSN 1997-1397
   Перевод заглавия: Численное моделирование магнитной микроструктуры нанокристаллических тонких пленок со случайной анизотропией
Кл.слова (ненормированные):
Micromagnetic simulation -- Nanocrystallites -- Random anisotropy model -- Thin magnetic film -- микромагнитное моделирование -- тонкая магнитная пленка -- нанокристаллиты -- модель случайной анизотропии
Аннотация: The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magnetic structure—a magnetization ripple—was observed during magnetization reversal of the films. © Siberian Federal University. All rights reserved.
Методом микромагнитного моделирования проведены исследования магнитной структуры тонких нанокристаллических пленок со случайным распределением осей легкого намагничивания. В широком диапазоне размеров частиц 6 1000 нм исследованы зависимости параметров корреляционной функции неоднородной намагниченности от величины внешнего планарного магнитного поля. Анализ полученных зависимостей показал существенное различие корреляционных радиусов стохастической магнитной структуры вдоль и поперек направления приложенного поля. При перемагничивании тонких пленок наблюдался эффект блокировки тонкой магнитной структуры "ряби намагниченности".

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Держатели документа:
Kirensky Institute of Physics SB RAS, Akademgorodok, 50/38, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич

}
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Belyaev, B. A.
Numerical simulation of magnetic microstructure in nanocrystalline thin films with the random anisotropy / B. A. Belyaev, A. V. Izotov, P. N. Solovev // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P10.24. - P. 492. - References: 2 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
micromagnetic simulation -- nanocrystallites -- random anisotropy model

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич; 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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Belyaev, B. A.
The effect of substrate artificial texture on high frequency properties of thin magnetic films / B. A. Belyaev, A. V. Izotov, P. N. Solovev // International symposium «Magnetics and optics research» MORIS-2013 : Technical digest. - 2013. - P. 54-55

Материалы конференции

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Беляев, Борис Афанасьевич; Magnetics and Optics Research International Symposium(2013 ; Dec. 2-5 ; Omiya Sonic City, Saitama, Japan)
}
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Determination of magnetic anisotropies and miscut angles in epitaxial thin films on vicinal (111) substrate by the ferromagnetic resonance / B. A. Belyaev [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 181-184, DOI 10.1016/j.jmmm.2016.12.081. - Cited References:16. - This work was supported by the Ministry of Education and Science of the Russian Federation, Task no. 3.528.2014K. . - ISSN 0304-8853. - ISSN 1873-4766

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SURFACE
SPECTROMETER
SPINTRONICS
Кл.слова (ненормированные):
Thin film -- Ferromagnetic resonance -- Magnetic anisotropy -- Vicinal (111) -- surface -- Iron silicide
Аннотация: A method for determining magnetic anisotropy parameters of a thin single-crystal film on vicinal (111) substrate as well as substrate miscut angles from angular dependence of ferromagnetic resonance field has been proposed. The method is based on the following: (i) a new approach for the solution of the system of nonlinear equations for equilibrium and resonance conditions; (ii) a new expression of the objective function for the fitting problem. The study of the iron silicide films grown on vicinal Si(111) substrates with different miscut angles confirmed the efficiency of the method. The proposed method can be easily generalized to determine parameters of single-crystal films grown on substrates with an arbitrary cut.

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Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Yakovlev, I. A.; Ministry of Education and Science of the Russian Federation [3.528.2014K]; 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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Domain structure and magnetization reversal in multilayer structures consisting of thin permalloy films separated with nonmagnetic interlayers / B. A. Belyaev, N. M. Boev, A. V. Izotov, P. N. Solovev // Russ. Phys. J. - 2021. - Vol. 64, Is. 6. - P. 1160-1167, DOI 10.1007/s11182-021-02436-w. - Cited References: 30. - This work was financially supported by the Ministry of Science and Higher Education under agreement No. 075-11-2019-054 November 22, 2019 . - ISSN 1064-8887. - ISSN 1573-9228

РУБ Physics, Multidisciplinary
Рубрики:
MICROMAGNETIC CALCULATION
   MAGNETOMETER
   SIMULATION
   NOISE
Кл.слова (ненормированные):
micromagnetic modeling -- multilayer magnetic film -- domain structure -- hysteresis loop -- microstrip resonator -- magnetic field sensor
Аннотация: Using numerical micromagnetic modeling, we have investigated the development of domain structure and magnetization reversal in multilayer thin-film structures. The permalloy (Ni80Fe20) magnetic layers had the inplane uniaxial and perpendicular magnetic anisotropy. We found that as the thickness of nonmagnetic interlayers decreases, the in-plane configuration of magnetic moments in the permalloy layers transforms from a single domain state to stripe domains, which is caused by the increase of magnetostatic interaction between layers. In structures with "thick" interlayers, even weak magnetostatic interaction enforces the neighboring single domain permalloy layers to have opposite orientations of magnetic moments. The saturation field of such samples increases linearly with the number of layers. By analyzing the dynamic characteristics of multilayers, we determined the optimum number of layers ensuring the maximum conversion efficiency of wideband microwave microstrip sensors of weak magnetic fields.

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Публикация на русском языке Доменная структура и процессы перемагничивания многослойных систем из тонких пленок пермаллоя с немагнитными прослойками [Текст] / Б. А. Беляев, Н. М. Боев, А. В. Изотов, П. Н. Соловьев // Изв. вузов. Физика. - 2021. - Т. 64 № 6. - С. 170-176

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys Fed Res Ctr KSC, Siberian Branch, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Ministry of Science and Higher EducationMinistry of Science and Higher Education, PolandEuropean Commission
}
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Experimental study of the magnetic characteristics of nanocrystalline thin films: the role of edge effects / B. A. Belyaev [et al.] // Mater. Res. Express. - 2019. - Vol. 6, Is. 11. - Ст. 116105, DOI 10.1088/2053-1591/ab4456. - Cited References: 37. - This work was supported by RFBR according to the research project no. 18-32-00086 and by the Ministry of Science and Higher Education of the Russian Federation no. 3.1031.2017/PCh. . - ISSN 2053-1591

РУБ Materials Science, Multidisciplinary
Рубрики:
FERROMAGNETIC-RESONANCE
   ANISOTROPIES
   ROUGHNESS
   SUBSTRATE
Кл.слова (ненормированные):
magnetic anisotropy -- ferromagnetic resonance -- nanocrystalline film -- soft magnetic film -- thin film edges
Аннотация: Magnetic characteristics and their spatial distribution of magnetron sputtered nanocrystalline NiFe thin films of various compositions were investigated by ferromagnetic resonance (FMR) and magneto-optical Kerr effect microscopy. A sharp increase in the FMR line width and a strong deviation of the uniaxial magnetic anisotropy field were observed near the film edges. It was shown that the observed magnetic anisotropy behavior can be explained by assuming that besides the field-induced uniaxial magnetic anisotropy an additional source of the uniaxial anisotropy near the film edges exists, with the easy axis parallel to the edges. The possible origins of this additional contribution were discussed.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 66041, Russia.

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Izotov, A. V.; Изотов, Андрей Викторович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Solovev, P. N.; Соловьев, Платон Николаевич; RFBRRussian Foundation for Basic Research (RFBR) [18-32-00086]; Ministry of Science and Higher Education of the Russian Federation [3.1031.2017/PCh]
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10.

    Ferromagnetic resonance line broadening and shift effect in nanocrystalline thin magnetic films: Relation with crystalline and magnetic structure / A. V. Izotov, B. A. Belyaev, N. M. Boev [et al.] // J. Alloy. Compd. - 2022. - Vol. 900. - Ст. 163416, DOI 10.1016/j.jallcom.2021.163416. - 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 . - ISSN 0925-8388. - ISSN 1873-4669
   Перевод заглавия: Уширение линии ферромагнитного резонанса и эффект сдвига в нанокристаллических тонких магнитных пленках: Связь с кристаллической и магнитной структурой

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical
Рубрики:
SUSCEPTIBILITY
   RIPPLE
   ANISOTROPIES
   ALLOYS
Кл.слова (ненормированные):
Nanocrystallite -- Magnetization ripple -- Ferromagnetic resonance (FMR) -- Two-magnon scattering process -- Micromagnetic simulation
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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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Akademgorodok 5038, 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; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Solovev, P. N.; Соловьев, Платон Николаевич; 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]
}
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11.

Grain-size dependence of magnetic microstructure and high-frequency susceptibility of nanocrystalline thin films: A micromagnetic simulation study / A. V. Izotov, B. A. Belyaev, P. N. Solovev, N. M. Boev // J. Magn. Magn. Mater. - 2021. - Vol. 529. - Ст. 167856, DOI 10.1016/j.jmmm.2021.167856. - Cited References: 73. - The reported study was funded by RFBR, the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund and JSC «NPP «Radiosviaz», project number 20-42-242901 . - ISSN 0304-8853
Кл.слова (ненормированные):
Micromagnetic simulation -- Nanocrystallites -- Local magnetic anisotropy -- Ferromagnetic resonance -- Magnetization ripple -- Two-magnon scattering process
Аннотация: The size of crystallites is one of the most important factors that determine the key characteristics of nanocrystalline thin magnetic films that make them very promising media for various applications. In this paper, using micromagnetic simulation, we study in detail the influence of the grain size on the magnetic microstructure of the films and its relation with high-frequency dynamics of magnetization. When the grain size exceeds some critical value Dcr, a sharp broadening and shift of the ferromagnetic resonance line are observed at certain frequencies of the alternating magnetic field. Using a two-magnon scattering model, it is shown that these effects are caused by the scattering of spin waves on the inhomogeneous stochastic magnetic structure—magnetization ripple. An expression for the determination of the critical size Dcr is obtained. The micromagnetic simulation results agree with the main conclusions of the static and dynamic theories of magnetization ripple and also confirmed by experimental data reported by other authors.

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Держатели документа:
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович
}
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12.

Magnetic anisotropy and ferromagnetic resonance in inhomogeneous demagnetizing fields near edges of thin magnetic films / P. N. Solovev, B. A. Belyaev, N. M. Boev [et al.] // J. Phys. Condens. Matter. - 2024. - Vol. 36, Is. 19. - Ст. 195803, DOI 10.1088/1361-648X/ad258c. - Cited References: 38 . - ISSN 0953-8984. - ISSN 1361-648X
Кл.слова (ненормированные):
edge domain -- demagnetizing fields -- demagnetizing fields -- film edges -- magnetic anisotropy -- magnetization dynamics
Аннотация: Using local ferromagnetic resonance spectroscopy, we have studied the magnetic properties near edges of thin tangentially magnetized permalloy films, in which a well-defined uniaxial magnetic anisotropy was induced perpendicular to one of the edges. In the experiment, two samples with thicknesses of 90 and 300 nm and with slightly different compositions were examined. To explain the magnetization dynamics near edges, we propose a simple yet effective model of a film in the form of a rectangular prism, which yields the modified Kittel formula for the resonance frequency. In this formula, the locally averaged distance-dependent demagnetizing field that emerges near the edges is included as an additional uniaxial anisotropy term. The measurements reveal that at a certain distance from the edge, the resulting (apparent) anisotropy, determined from the angular dependencies of the resonance field, almost vanishes. Moreover, its easy axis reorients to become parallel to the edge. The model predictions agree well with these results, proving that the main resonance mode behavior near the film edges can be accurately described by introducing additional effective uniaxial anisotropy, provided the measuring area is relatively large. However, for the thick (300 nm) sample, additional precession modes are also observed. These modes distort the angular dependence of the main mode, thus demonstrating the limitations of the model.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia
Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Solovev, P. N.; Соловьев, Платон Николаевич; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Izotov, A. V.; Изотов, Андрей Викторович
}
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13.

    Magnetic frequency doubler / I. V. Govorun, A. O. Afonin, A. V. Ugryumov [et al.] // 23rd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2022 : (30 June - 4 July 2022, Altai) : IEEE Computer Society, 2022. - Vol. 2022-June. - P. 135-139, DOI 10.1109/EDM55285.2022.9855072. - Cited References: 10. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047. The equipment of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used during the measurement
   Перевод заглавия: Магнитный умножитель частоты
Кл.слова (ненормированные):
ferromagnetic resonance -- frequency doubling -- microstrip resonator -- thin magnetic film -- Halbach array
Аннотация: This article presents the compact magnetic frequency doubler based on a quarter-wavelength stepped-impedance microstrip resonator with a 125-nm-thick permalloy (Ni 70 Fe 30 ) magnetic film. For the first time, the implementation of a frequency doubler operating at the high-field peak is shown. To produce a uniform magnetic field in the thin magnetic film plane, the magnetic system consisting of individual permanent magnets and based on the circular Halbach array was developed. The uniformity of the magnetic field in the region of 10×10 mm2 was 4.9%. Two bandpass filters were developed. The input filter serves to purify the input signal from parasitic harmonics. The output filter blocks the input signal in the resonator. The resonator, magnetic system, input and output filters are integrated into a single device. The maximum measured conversion efficiency was 0.97% (at 1 GHz) at the input power of 4800 mW. The −3 dB fractional bandwidth of the magnetic frequency doubler was 2.15%.

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Держатели документа:
Kirensky Institute of Physics, Laboratory of Scientific Instrumentation, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Laboratory of Electrodynamics and Microwave Electronics, Krasnoyarsk, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Govorun, I. V.; Говорун, Илья Валерьевич; Afonin, A. O.; Афонин, Алексей Олегович; Ugryumov, A. V.; Угрюмов, Андрей Витальевич; Solovev, P. N.; Соловьев, Платон Николаевич; Leksikov, An. A.; Лексиков, Андрей Александрович; Boev, N. M.; Боев, Никита Михайлович; International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices(23 ; 2022 ; Jun.-Jul. ; Altai)
}
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14.

Magnetic properties of permalloy thin film edges / B. A. Belyaev, N. M. Boev, A. V. Izotov [et al.] // Russ. Phys. J. - 2020. - Vol. 63, Is. 1. - P. 16-22, DOI 10.1007/s11182-020-01997-6. - Cited References: 23. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation (Project No. 02.G25.31.0313). . - ISSN 1064-8887. - ISSN 1573-9228
Рубрики:
ANISOTROPIES
Кл.слова (ненормированные):
magnetic thin film -- ferromagnetic resonance -- edge effects -- magnetic anisotropy
Аннотация: The paper presents the results of ferromagnetic resonance (FMR) spectrometry of magnetic properties of nanocrystalline thin films obtained by magnetron sputtering of permalloy targets of various composition (NixFe1-x, x = 0.6-0.85). The behavior of the main magnetic properties of the thin film edges is analyzed. Near the film edges, not only the fluctuation of the uniaxial magnetic anisotropy field is observed, but also a drastic widening of the FMR line and the decrease in the effective saturation magnetization.

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Публикация на русском языке Особенности поведения магнитных характеристик вблизи краев тонких пермаллоевых пленок [Текст] / Б. А. Беляев, Н. М. Боев, А. В. Изотов [и др.] // Изв. вузов. Физика. - 2020. - Т. 63 № 1. - С. 17-23

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

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Izotov, A. V.; Изотов, Андрей Викторович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Solovev, P. N.; Соловьев, Платон Николаевич; Ministry of Science and Higher Education of the Russian Federation [02, G25.31.0313]
}
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15.

    Micromagnetic analysis of edge effects in a thin magnetic film during local excitation of magnetization oscillations / B. A. Belyaev, A. V. Izotov, G. V. Skomorokhov, P. N. Solovev // Russ. Phys. J. - 2020. - Vol. 63, Is. 5. - P. 837-843, DOI 10.1007/s11182-020-02106-3. - Cited References: 19. - This research was performed with financial support of the Russian Foundation for Basic Research within the research project No. 18-32-00086 . - ISSN 1064-8887. - ISSN 1573-9228
Рубрики:
ANISOTROPIES
   SIMULATIONS
   FIELDS
Кл.слова (ненормированные):
micromagnetic simulation -- thin magnetic film -- edge effects -- ferromagnetic resonance -- magnetic anisotropy
Аннотация: The method of numerical micromagnetic simulation was used to study the magnetization dynamics of a thin film with uniaxial magnetic anisotropy during ferromagnetic resonance (FMR) excitation in it on the local sites by a linearly polarized high-frequency magnetic field emitted from the 1 mm opening in the metallic screen of the transmission line. It was established that non-uniformities of demagnetizing fields emerging near the film edges lead not only to the change in the FMR field, but also to the change in the value and direction of the uniaxial anisotropy field. The distribution of non-uniformities of the magnetic anisotropy characteristics over the area of 60 nm thick permalloy film that was measured on the scanning FMR spectrometer agrees well with the micromagnetic simulation results. Demagnetizing fields were proved to be the main cause for the edge effects in magnetic films.

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Публикация на русском языке Микромагнитный анализ краевых эффектов в тонкой магнитной пленке при локальном возбуждении колебаний намагниченности [Текст] / Б. А. Беляев, А. В. Изотов, Г. В. Скоморохов, П. Н. Соловьев // Изв. вузов. Физика. - 2020. - Т. 63 № 5. - С. 116-121

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

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Izotov, A. V.; Изотов, Андрей Викторович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Solovev, P. N.; Соловьев, Платон Николаевич
}
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16.

    Micromagnetic simulation of domain structure in thin permalloy films with in-plane and perpendicular anisotropy / P. N. Solovev, A. V. Izotov, B. A. Belyaev, N. M. Boev // Physica B. - 2020. - Vol. 604. - Ст. 412699, DOI 10.1016/j.physb.2020.412699. - Cited References: 31. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation , agreement number 075-11-2019-054 dated 22.11.2019 . - ISSN 0921-4526
   Перевод заглавия: Микромагнитное моделирование доменной структуры тонких пермаллоевых пленок с одноосной планарной и перпендикулярной анизотропией
Кл.слова (ненормированные):
Micromagnetic simulation -- Thin magnetic film -- Magnetic anisotropy -- Stripe domains -- Hysteresis loop -- Saturation field
Аннотация: We investigate the domain structure formation and magnetization processes in thin permalloy films with in-plane and perpendicular magnetic anisotropy by using micromagnetic simulation. We show that the films of thicknesses less than a critical value Lcr are in the monodomain state, and their magnetization processes are specified by the in-plane anisotropy. Above the critical thickness Lcr, the perpendicular anisotropy dominates, leading to the formation of the stripe domain structure that significantly complicates the magnetization reversal. The values of the critical thickness, parameters of the domain structure, and the saturation field obtained from the micromagnetic simulations are compared with the corresponding values calculated using analytical expressions derived by Murayama in the framework of the domain structures theory.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Solovev, P. N.; Соловьев, Платон Николаевич; Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович
}
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17.

    Microstrip frequency doublers based on a thin magnetic film / I. V. Govorun, P. N. Solovev, N. M. Boev [et al.] // Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2022 : Proceedings : IEEE, 2022. - P. 126-130, DOI 10.1109/USBEREIT56278.2022.9923409. - Cited References: 11. - This work is supported by the Russian Science Foundation under grant 19-72-10047
   Перевод заглавия: Микрополосковые умножители частоты на основе тонких магнитных пленок
Кл.слова (ненормированные):
ferromagnetic resonance -- frequency doubling -- microstrip resonator -- thin magnetic film -- second harmonic
Аннотация: The article presents the results of measuring the generation of the second harmonic in a microstrip transmission line and in a quarter-wavelength stepped-impedance microstrip resonator with a thin permalloy magnetic film (Ni80Fe20 ). The measurements were carried out for three samples with different thicknesses – 50 nm, 75 nm and 100 nm, at an input signal excitation frequency of 1 GHz and maximum input power of ~3500 mW. It was shown that the level of the second harmonic rises as the TMF thickness increases. It was found that a 100-nm sample generates the second harmonic more efficiently due to the larger ΔH FMR and the larger amount of magnetic material involved in the process of nonlinear conversion of the input power. It was shown that the resonator-based frequency doubler has a conversion factor ~4500 times higher than that of the doubler based on the microstrip line due to the higher value of the loaded Q-factor. Therefore, a quarter-wavelength stepped-impedance microstrip resonator can be used as a frequency doubler.

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Держатели документа:
Kirensky Institute of Physics, Laboratory of Scientific Instrumentation, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Laboratory of Electrodynamics and Microwave Electronics, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Govorun, I. V.; Говорун, Илья Валерьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович; Afonin, A. O.; Афонин, Алексей Олегович; Ugryumov, A. V.; Угрюмов, Андрей Витальевич; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology(2022 ; 19-21 Sept. ; Yekaterinburg, Russian Federation)
}
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18.

    Microstrip resonator for nonlinearity investigation of thin magnetic films and magnetic frequency doubler / B. A. Belyaev, A. O. Afonin, A. V. Ugrymov [et al.] // Rev. Sci. Instrum. - 2020. - Vol. 91, Is. 11. - Ст. 114705, DOI 10.1063/5.0009045. - Cited References: 40. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047 . - ISSN 0034-6748
   Перевод заглавия: Микрополосковый резонатор для исследования нелинейностей в тонких магнитных пленках и магнитного умножителя частоты на два
Кл.слова (ненормированные):
Binary alloys -- Conversion efficiency -- Efficiency -- Frequency doublers -- Iron alloys -- Magnetic devices -- Magnetic films -- Microwave resonators -- Silica -- Thin films
Аннотация: A structure that consists of a λ/4 stepped-impedance microstrip resonator is proposed as an instrument for the investigation of nonlinear effects in thin magnetic films and also can be used as a microwave frequency doubler. A conversion efficiency of 0.65% is observed at a one-layer 100 nm Ni80Fe20 thin film at an input signal level of 4.6 W for a 1 GHz probe signal. The maximum measured conversion efficiency (1% at 1 GHz) was achieved for the 9-layer Ni80Fe20 film where 150 nm magnetic layers were separated by SiO2 layers.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Afonin, A. O.; Афонин, Алексей Олегович; Ugryumov, A. V.; Угрюмов, Андрей Витальевич; Govorun, I. V.; Говорун, Илья Валерьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Leksikov, An. A.; Лексиков, Андрей Александрович
}
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19.

    Numerical calculation of high frequency magnetic susceptibility in thin nanocrystalline magnetic films / A. V. Izotov [et al.] // Physica B. - 2018. - Vol. 556. - P. 42-47, DOI 10.1016/j.physb.2018.12.006. - Cited References: 32. - This work was supported by the Ministry of Education and Science of the Russian Federation, №RFMEFI60417X0179. . - ISSN 0921-4526. - ISSN 1873-2135
   Перевод заглавия: Численный расчет высокочастотной магнитной восприимчивости тонких нанокристаллических магнитных пленок
Рубрики:
Physics, Condensed Matter
Кл.слова (ненормированные):
micromagnetic simulation -- magnetization dynamics -- magnetic susceptibility -- ferromagnetic resonance -- nanocrystalline film -- soft magnetic film
Аннотация: Two numerical micromagnetic methods most suitable for calculation of the high frequency magnetic susceptibility of nanocrystalline thin films were considered in detail. The methods are based on the Landau–Lifshitz equation, linearized around the equilibrium state leading to an eigenvalue problem or solved using an undetermined coefficients technique. An analysis and estimation of an efficiency of the methods were carried out. Several conclusions about their advantages and shortcomings, as well as specifics of their practical application were drawn.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia
Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович
}
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20.

Second harmonic generation as a probe of parametric spin wave instability processes in thin magnetic films / P. N. Solovev, A. O. Afonin, B. A. Belyaev [et al.] // Phys. Rev. B. - 2022. - Vol. 106, Is. 6. - Ст. 064406, DOI 10.1103/PhysRevB.106.064406. - Cited References: 33. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047. The equipment of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used during the measurements . - ISSN 2469-9950
Кл.слова (ненормированные):
Dynamic response -- Harmonic generation -- Nickel alloys -- Nonlinear optics -- Spin waves -- Dynamic component -- High amplitudes -- Microstrip-line -- Microwave field -- Parametric instabilities -- Second harmonic signals -- Spin-wave instabilities -- Thin magnetic films -- Thin permalloy films -- Threshold effect -- Iron alloys
Аннотация: We have explored the dynamic response of in-plane magnetized thin permalloy films excited by microwave fields of high amplitudes (up to 3 Oe) at 1 GHz. The response was detected using a microstrip line by measuring the second harmonic signal generated by the dynamic components of the uniform magnetization. The data measured at ferromagnetic resonance showed the threshold effect of the Suhl parametric instability process. With the increase of the microwave power above the threshold value, the dynamic response revealed an intricate nonlinear behavior, including the emergence of an additional threshold. This second threshold can be explained in terms of the "stage by stage"process of parametric spin wave excitation following the S theory of Zakharov, L'vov, and Starobinets.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Solovev, P. N.; Соловьев, Платон Николаевич; Afonin, A. O.; Афонин, Алексей Олегович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Govorun, I. V.; Говорун, Илья Валерьевич; Izotov, A. V.; Изотов, Андрей Викторович; Ugrymov, A. V.; Угрюмов, Андрей Витальевич; Leksikov, An. A.; Лексиков, Андрей Александрович
}
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