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    Экспериментальное и теоретическое исследование влияния на высокочастотные свойства тонких магнитных пленок искусственной текстуры подложек / Б. А. Беляев [и др.] // Изв. вузов. Физика. - 2013. - Т. 56, № 8/2. - С. 263-266. - Работа выполнена при финансовой поддержке Минобрнауки РФ, госконтракт № 14.513.11.0010, ФЦП «Научные и научно-педагогические кадры инновационной России 2009−2013» и гранта РФФИ № 12-02-12008-офи_м
   Перевод заглавия: Experimental and theoretical investigation of effect of the artificial texture in substrate on the high-frequency properties of thin magnetic films
Кл.слова (ненормированные):
текстура подложки -- тонкие магнитные пленки -- ферромагнитный резонанс -- микромагнитное моделирование -- artificial texture in substrate -- magnetic films -- ferromagnetic resonance -- numerical micromagnetic simulation
Аннотация: С помощью сканирующего спектрометра ферромагнитного резонанса (ФМР) получены экспериментальные зависимости резонансного поля и ширины линии ФМР тонких пермаллоевых магнитных пленок, осажденных в вакууме на подложки с искусственно созданной текстурой. Текстура получена нанесением алмазным резцом параллельных рисок на стеклянные подложки с периодичностью от 5 до 200 мкм. Обнаружено, что наличие текстуры приводит к существенному росту резонансного поля и ширины линии ФМР, когда внешнее поле направлено ортогонально рискам. На основе численного микромагнитного моделирования дано объяснение природы наблюдаемых в магнитных пленках эффектов.
Using the scanning spectrometer of ferromagnetic resonance (FMR) the experimental dependences of the resonance field and FMR line width of thin permalloy magnetic films, which were deposited in vacuum on the substrate with an artificial texture, were obtained. The texture was produced by putting parallel grooves using a diamond cutter on glass substrates with period from 5 to 200 μm. It was found that the presence of the texture was leading to an essential increase of th resonance field and FMR line width, when the external field was directed orthogonal to the grooves. On the base of a numerical micromagnetic simulation the explanation of nature of observable in thin magnetic films effects was given.

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Беляев, Борис Афанасьевич; Belyaev B. A.; Лексиков, Александр Александрович; Leksikov Al. A.; Изотов, Андрей Викторович; Izotov A.V.; Сержантов, Алексей Михайлович; Serzhantov A.M.; Соловьев, Платон Николаевич; Лемберг, Константин Вячеславович; Lemberg, K.V.
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    Temperature- and texture-dependent dielectric model for moist soils at 1.4 GHz / V. L. Mironov [и др.] // Geosci. and Remote Sensing Lett., IEEE. - 2013. - Vol. 10, Is. 3. - P. 419 - 423DOI 10.1109/LGRS.2012.2207878
   Перевод заглавия: Температурно и гранулометрически зависимая диэлетрическая модель влажных почв на частоте 1,4 ГГц
Аннотация: In this letter, a monofrequent dielectric model for moist soils taking into account dependences on the temperature and texture is proposed, in the case of an electromagnetic frequency equal to 1.4 GHz. The proposed model is deduced from a more general model proposed by Mironov and Fomin (2009) that provides estimations of the complex relative permittivity (CRP) of moist soils as a function of frequency, temperature, moisture, and texture of soils. The latter employs the physical laws of Debye and Clausius-Mossotti and the law of ion conductance to calculate the CRP of water solutions in the soil. The parameters of the respective physical laws were determined by using the CRPs of moist soils measured by Curtis (1995) for a wide ensemble of soil textures (clay content from 0% to 76%), moistures (from drying at 105 °C to nearly saturation), temperatures (10 °C -40 °C), and frequencies (0.3-26.5 GHz). This model has standard deviations of calculated CRPs from the measured values equal to 1.9 and 1.3 for the real and imaginary parts of CRP, respectively. In the model proposed in this letter, the respective standard deviations were decreased to the values of 0.87 and 0.26. In addition, the equations to calculate the complex dielectric permittivity as a function of moisture, temperature, and texture were represented in a simple form of the refractive mixing dielectric model, which is commonly used in the algorithms of radiometric and radar remote sensing to retrieve moisture in the soil.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Univ Toulouse 3, CNRS, Ctr Natl Etud Spatiales, Ctr Etud Spatiale BIOsphere,Inst Rech Dev, F-31401 Toulouse, France
INRA, F-33140 Villenave Dornon, France
Univ Bordeaux, CNRS, UMR, Lab Integrat Mat Syst, F-33405 Talence, France

Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Kerr, Y.; Wigneron, J.-P.; Косолапова, Людмила Георгиевна; Kosolapova, L. G.; Demontoux, F.
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Temperature and texture dependent dielectric model of MOIST soils at the SMOS frequency / V. L. Mironov [и др.] // IEEE International Geoscience and Remote Sensing Symposium (IGRASS) : Proceedings. - Munich, 2012. - P. 1127-1129, DOI 10.1109/IGARSS.2012.6351350 . - ISBN 978-1-4673-1159-5
Аннотация: In this paper a single-frequent temperature and texture dependent dielectric model for moist soils is proposed. This model is designed for the frequency of 1.4 GHz at which the European sensor SMOS operates to monitor moisture of the Earth surface from space. Earlier, the dielectric model was created, that provides estimations of the complex dielectric constant of moist soils as a function of frequency, temperature, moisture and mineralogy of soils. This model was developed based on extensive measurements of the dielectric constant for a wide ensemble of soils (clay content from 0 to 76%), moistures (from zero to molecular moisture capacity), temperatures (10° C to 40° C), and frequencies (0.3 to 26.5 GHz). This model provides for fairly good accuracy. But, being cumbersome to account for frequency dependencies, the model is not always convenient for practical use at a single frequency. Exclusion of the frequency dependence allowed us to obtain a substantially more simple dielectric model to estimate the complex dielectric constant of soil at a single frequency of 1.4 GHz as a function of moisture, temperature, and clay content.

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Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Kerr, Y.; Wigneron, J.-P.; Kosolapova, L. G.; Косолапова, Людмила Георгиевна; Demontoux, F.; IEEE International Geoscience and Remote Sensing Symposium (2012 ; July ; 22-27 ; Munich, Germany)
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Thin magnetic films with artificial texture on substrate: Microwave properties / B. A. Belyaev [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2014. - Vol. 215: Trends in Magnetism: Nanomagnetism (EASTMAG-2013). - P. 233-236, DOI 10.4028/www.scientific.net/SSP.215.233. - Cited References: 9 . - ISSN 978-30383. - ISSN 1662-9779
Кл.слова (ненормированные):
Ferromagnetic resonance -- Micromagnetic simulation -- Nanopattering -- Thin magnetic films
Аннотация: Using the scanning spectrometer of ferromagnetic resonance (FMR) the experimental dependences of the resonance field and FMR line width of thin permalloy magnetic films, which were deposited in vacuum on the substrate with an artificial texture, were obtained. The texture was produced by engineering parallel grooves using a diamond cutter on glass substrates with period from 5 to 100 ?m. We found that the presence of the texture led to a considerable increase of the resonance field and FMR line width, when the external field was directed orthogonal to the grooves. By analyzing the results of a numerical micromagnetic simulation we explained the nature of the effects observed in the thin magnetic films. © (2014) Trans Tech Publications, Switzerland.

Доп.точки доступа:
Ovchinnikov, S. G. \ed.\; Овчинников, Сергей Геннадьевич; Samardak, A. \ed.\; Belyaev, B. A.; Беляев, Борис Афанасьевич; Izotov, A. V.; Изотов, Андрей Викторович; Leksikov, Al. A.; Лексиков, Александр Александрович; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Lemberg, K. V.; Лемберг, Константин Вячеславович; Solovev, P. N.; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; sept. ; 15-21 ; Vladivostok)
}
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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

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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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Characterization and magnetotransport properties of textured Fe3O4 films / A. S. Tarasov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O10.21. - P. 465. - References: 2. - This work was partially supported by RFBR project no. 14-02-00234, the RAS «Far East» Program No 0262-2015-0057 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
magnetite -- texture film -- spin-dependent transport

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Volochaev, M. N.; Волочаев, Михаил Николаевич; Eremin, E. V.; Еремин, Евгений Владимирович; Korobtsov, V .V.; Коробцов, Владимир Викторович; Balashev, V. V.; Балашев В. В.; Vikulov, V. A.; Solovyov, L. A.; Соловьев, Леонид Александрович; Volkov, N. V.; Волков, Никита Валентинович; 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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Director configurations in nematic droplets with tilted surface anchoring / M. N. Krakhalev [et al.] // Liq. Cryst. - 2017. - Vol. 44, Is. 2. - P. 355-363, DOI 10.1080/02678292.2016.1205225. - Cited References:32. - This work was supported by Russian Foundation for Basic Research (RFBR) under Grants 15-02-06924 and 16-32-00164 and Siberian Branch of the Russian Academy of Sciences (SB RAS) under Complex Program [II.2P 0358-2015-0010], and V.S.S. acknowledges financial support from RFBR [16-32-60036]. . - ISSN 0267-8292. - ISSN 1366-5855

РУБ Chemistry, Multidisciplinary + Crystallography + Materials Science, Multidisciplinary
Рубрики:
DISPERSED LIQUID-CRYSTALS
   RIGIDLY FIXED POLES
   ELECTRIC-FIELD
   POLYMER
Кл.слова (ненормированные):
Polymer dispersed liquid crystal -- nematic droplet -- director -- configuration -- boundary conditions -- surface anchoring strength -- optical -- texture
Аннотация: The polymer dispersed nematic liquid crystal (LC) with the tilted surface anchoring has been studied. The droplet orientational structures with two point surface defects – boojums and the surface ring defect – are formed within the films. The director tilt angle α = 40° ± 4° at the droplet interface and LC surface anchoring strength Ws ~ 10–6 (J m−2) have been estimated. The bipolar axes within the studied droplets of oblate ellipsoidal form can be randomly oriented are oriented randomly relatively to the ellipsoid axes as opposed to the droplets with homeotropic and tangential anchoring.

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

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Foundation for Basic Research (RFBR) [15-02-06924, 16-32-00164]; Siberian Branch of the Russian Academy of Sciences (SB RAS) [II.2P 0358-2015-0010]; RFBR [16-32-60036]
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Temperature and texture dependent spectroscopic dielectric model for frozen mineral soils at 0.1-15GHz / V. L. Mironov [et al.] // Progr. Electromag. Res. Symp. (PIERS) : Proceedings : IEEE, 2016. - P. 4754-4754, DOI 10.1109/PIERS.2016.7735742. - Cited References:2. - The work was supported by the Russian Science Foundation (grant No. 14-17-00656). . -

РУБ Engineering, Electrical & Electronic

Кл.слова (ненормированные):
Soil -- Dielectrics -- Temperature measurement -- Minerals -- Temperature dependence -- Dielectric measurement -- Frequency measurement

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Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Karavaysky, A. Yu.; Каравайский, Андрей Юрьевич; Molostov, I. P.; Молостов, Илья Петрович; Lukin, Y. I.; Лукин, Юрий Иванович; Kosolapova, L. G.; Косолапова, Людмила Георгиевна; Russian Science Foundation [14-17-00656]; Progress in Electromagnetics Research Symposium(37 ; 2016 ; Aug. ; 8-11 ; Shanghai, China)
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Transformation of cholesteric orientational structures and optical textures induced by the electric field–driven ionic modification of surface anchoring / V. S. Sutormin [et al.] // Bull. Russ. Acad. Sci. Phys. - 2017. - Vol. 81, Is. 5. - P. 602-604, DOI 10.3103/S1062873817050239. - Cited References: 8 . - ISSN 1062-8738
Кл.слова (ненормированные):
Cholesteric liquid crystals -- Liquid crystals -- Dc electric field -- Helical pitch -- Homeotropic alignment -- Ionic modification -- Liquid crystal cells -- Optical texture -- Orientational structure -- Surface-anchoring -- Electric fields
Аннотация: The reorientation of a cholesteric liquid crystal with a large helical pitch induced by the electric field–driven modification of surface anchoring is investigated. In the initial state, the liquid crystal cell has a homeotropic alignment of the director. An applied dc electric field produced a twisted homeoplanar structure of the cholesteric. © 2017, Allerton Press, Inc.

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Публикация на русском языке Трансформация ориентационных структур и оптических текстур холестерика, индуцированная электроуправляемой ионной модификацией поверхностного сцепления [Текст] / В. С. Сутормин [и др.] // Изв. РАН. Сер. физич. - 2017. - Т. 81 № 5. - С. 649-652

Держатели документа:
Kirensky Institute of Physics, Federal Research Center–Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sutormin, V. S.; Сутормин, Виталий Сергеевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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10.

    Temperature- and texture-dependent dielectric model for frozen and thawed mineral soils at a frequency of 1.4 GHz / V. L. Mironov [et al.] // Remote Sens. Environ. - 2017. - Vol. 200. - P. 240-249, DOI 10.1016/j.rse.2017.08.007. - Cited References: 27. - The study was supported by a grant from the Russian Foundation for Basic Research (project № 16-05-00572). . - ISSN 0034-4257
   Перевод заглавия: Температурно- и гранулометрически-зависимая диэлектрическая модель мерзлых и талых минеральных почв на частоте 1,4 ГГц
Кл.слова (ненормированные):
Frozen mineral soils -- Dielectric measurements -- Dielectric model -- Unfrozen bound water -- Moistened ice -- 1.4 GHz
Аннотация: A single-frequency dielectric model at 1.4 GHz for frozen mineral soils was developed, with the temperature and gravimetric clay content varying from − 1 to − 30°C and from 9.1 to 41.3%, respectively. The model is based on the refractive mixing dielectric model and the dielectric data measured for the three typical soils collected in the Yamal tundra. The refractive mixing dielectric model was applied to fit the measured dielectric data as a function of soil moisture at a number of fixed temperatures. As a result, the parameters of the developed model were derived as a function of temperature and texture. This set of parameters consists of the maximum gravimetric fraction of unfrozen bound water and the values of the complex refractive indexes relating to soil solids, unfrozen bound water, and moistened ice. The developed model for frozen mineral soils in conjunction with the previously developed by us dielectric model for thawed mineral soils is considered as an integral dielectric model which is applicable for permittivity calculations of soil in both thawed and frozen states. The developed integral dielectric model for frozen and thawed mineral soils was validated using the dielectric data for five measured soils, and the statistical errors were estimated in terms of the root mean square error and the determination coefficient. In addition, the only known in the literature dielectric model for frozen soils suggested by Zhang was validated based on dielectric data for soils measured in this research. The comparative analysis proved substantially better accuracy of predictions in the case of the developed model as compared to those related to the Zhang model.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Russian Federation
Altai State University, Russian Federation

Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Kosolapova, L. G.; Косолапова, Людмила Георгиевна; Lukin, Y. I.; Лукин, Юрий Иванович; Karavaysky, A. Yu.; Каравайский, Андрей Юрьевич; Molostov, I. P.
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