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A magnetometer of weak quasi-stationary and high-frequency fields on resonator microstrip transducers with thin magnetic fields / A. N. Babitskii [et al.] // Instrum. Exp. Tech. - 2016. - Vol. 59, Is. 3. - P. 425-432, DOI 10.1134/S0020441216030131. - Cited References: 23. - This study was performed within the framework of the State Job of the Ministry of Education and Science of the Russian Federation for the research at the Siberian Federal University in 2014 (project no. 3.528.2014K). . - ISSN 0020-4412

РУБ Engineering, Multidisciplinary + Instruments & Instrumentation
Рубрики:
Ferromagnetic-resonance
   Films
   Susceptibility
   Anisotropy
   Sensors
   Trends
Аннотация: A high-sensitivity magnetometer for simultaneous measurements of three components of a weak quasi-stationary or high-frequency magnetic-field vector was developed and investigated. Microstrip structures that are based on irregular resonators serve as the magnetometer transducers. An anisotropic thin-film magnetic structure is used as the sensing element. This structure consists of two thin magnetic films that are prepared by magnetron sputtering of a Ni75Fe25 permalloy target and separated by a silicon monoxide layer. It is demonstrated that the transducer exhibits the maximum sensitivity, when the easy magnetization axis of the film structure is orthogonal to the polarization direction of the pumping microwave magnetic field in the microstrip resonator and at an optimal value of a constant magnetic bias field and its optimal deflection from the pumping-field polarization direction which is parallel to it. The magnetometer is characterized by a wide dynamic range of measured magnetic fields, 10–10–10–4 Т, and a wide frequency range, 10–1–105 Hz. © 2016, Pleiades Publishing, Inc.

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Публикация на русском языке Магнитометр слабых квазистационарных и высокочастотных полей на резонансных микрополосковых преобразователях с тонкими магнитными пленками [Текст] / А. Н. Бабицкий [и др.] // Приборы и техн. эксперим. : Наука, 2016. - № 3. - С. 96-104

Держатели документа:
Kirensky Institite of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, pr. Im. Gazety Krasnoyarskii rabochii 31, Krasnoyarsk, Russian Federation
OAO NPP Radiosvyaz’, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Babitskii, A. N.; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Izotov, A. V.; Изотов, Андрей Викторович; Galeev, R. G.
}
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A weak-field magnetometer based on a resonator microstrip transducer with thin magnetic films / A. N. Babitskii [et al.] // Tech. Phys. Lett. - 2015. - Vol. 41, Is. 4. - P. 324-327, DOI 10.1134/S1063785015040021. - Cited References:12. - This study was supported by the Ministry of Education and Science of the Russian Federation, state order for Siberian Federal University in 2014, task no. 3.528.2014K. . - ISSN 1063. - ISSN 1090-6533. -

РУБ Physics, Applied

Аннотация: A high-sensitivity magnetometer of weak quasi-stationary magnetic fields is developed and investigated. The magnetometer transducer is a microstrip resonator with an active medium from thin magnetic films prepared by magnetron sputtering of a Ni75Fe25 permalloy target. It is demonstrated that the transducer exhibits the maximum sensitivity not only in the optimal dc magnetic field, but also at the optimal deviation of this field from the rf pump field polarization direction. The magnetometer operates in a wide dynamic range of measured magnetic fields from 10−4 to 10−2 μT at frequencies of 10−1–105 Hz.

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Публикация на русском языке Магнитометр слабых полей на резонаторном микрополосковом преобразователе с тонкими магнитными пленками [Текст] / А. Н. Бабицкий [и др.] // Письма в Журнал технической физики. - Санкт-Петербург : Наука, 2015. - Т. 41 Вып. 7. - С. 36-44

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
OAO NPP Radiosvyaz, Krasnoyarsk 660021, Russia

Доп.точки доступа:
Babitskii, A. N.; Бабицкий, Александр Николаевич; Belyaev, B. A.; Беляев, Борис Афанасьевич; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Izotov, A. V.; Изотов, Андрей Викторович; Galeev, R. G.; Ministry of Education and Science of the Russian Federation, state order for Siberian Federal University [3.528.2014K]
}
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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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Vyzulin, S. A.
Ferromagnetic resonance in thin films of FexNi100−x / S. A. Vyzulin, N. E. Syr'ev, G. V. Skomorokhov // Bull. Russ. Acad. Sci. Phys. - 2021. - Vol. 85, Is. 9. - P. 1012-1015, DOI 10.3103/S106287382109032X. - Cited References: 9 . - ISSN 1062-8738
Кл.слова (ненормированные):
Ferromagnetic resonance -- Ferromagnetism -- Thin films -- Film structure -- Nanometer films -- Resonance characteristic -- S-theory -- Single layer -- Ferromagnetic materials
Аннотация: Magnetic resonance characteristics of FexNi100–x nanometer film systems are investigated. It is shown experimentally that Kittel’s theory of uniform ferromagnetic resonance in thin single-layer FexNi100−x film structures might be invalid.

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Публикация на русском языке Вызулин С. А. Ферромагнитный резонанс в тонких пленках FexNi100–x [Текст] / С. А. Вызулин, Н. Е. Сырьев, Г. В. Скоморохов // Изв. РАН. Сер. физич. - 2021. - Т. 85 № 9. - С. 1314-1317

Держатели документа:
Krasnodar Higher Military School, Krasnodar, 350035, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Syr'ev, N. E.; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич
}
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    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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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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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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    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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Microstrip construction of weak-field magnetometer / A. V. Izotov [et al.] // International Scientific Conference "Magnetic Measurements" : program. - 2015. - Ст. P8-01

Материалы конференции

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Babitskii, A. N.; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Skomorokhov, G. V.; Скоморохов, Георгий Витальевич; Galeev, R. G.; International scientific conference magnetic measurements(2015 ; Aug. ; 25-28 ; Košice, Slovakia)
}
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10.

    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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