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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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About the nature of induced anisotropy in amotphous Co-P films / G. S. Patrin [et al.] // Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts / предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P. 30

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Доп.точки доступа:
Aleksandrov, K. S. \предс. сем.\; Александров, Кирилл Сергеевич; Patrin, G. S. \зам. предс. сем.\; Патрин, Геннадий Семёнович; Ovchinnikov, S. G. \зам. предс. сем.\; Овчинников, Сергей Геннадьевич; Kosyrev, N. N. \чл. лок. ком.\; Косырев, Николай Николаевич; Fedorov, A. S. \чл. лок. ком.\; Федоров, Александр Семенович; Patrin, G. S.; Chzhan, A. V.; Чжан, Анатолий Владимирович; Kiparisov, S. Ya.; Кипарисов, Семен Яковлевич; Seredkin, V. A.; Середкин, Виталий Александрович; Palchik, M. G.; Пальчик, Марина Геннадьевна; "Trends in Nanomechanics and Nanoengineering", workshop(2009 ; Aug. ; 24-28 ; Krasnoyarsk); Сибирский федеральный университет; Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
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Advanced characterization of FeNi-based films for the development of magnetic field sensors with tailored functional parameters / S. V. Komogortsev, I. G. Vazhenina, S. A. Kleshnina [et al.] // Sensors. - 2022. - Vol. 22, Is. 9. - Ст. 3324, DOI 10.3390/s22093324. - Cited References: 35. - This research was funded by the Russian Science Foundation (RSF), project no. 22-29-00980, https://rscf.ru/en/project/22-29-00980/ (accessed on 20 March 2022) . - ISSN 1424-8220
Кл.слова (ненормированные):
magnetic field sensors -- thin films -- multilayered structures -- magnetic anisotropy -- anisotropy distribution -- ferromagnetic resonance -- magnetoimpedance -- high frequency applications
Аннотация: Magnetometry and ferromagnetic resonance are used to quantitatively study magnetic anisotropy with an easy axis both in the film plane and perpendicular to it. In the study of single-layer and multilayer permalloy films, it is demonstrated that these methods make it possible not only to investigate the average field of perpendicular and in-plane anisotropy, but also to characterize their inhomogeneity. It is shown that the quantitative data from direct integral and local measurements of magnetic anisotropy are consistent with the direct and indirect estimates based on processing of the magnetization curves. The possibility of estimating the perpendicular magnetic anisotropy constant from the width of stripe domains in a film in the transcritical state is demonstrated. The average in-plane magnetic anisotropy field of permalloy films prepared by magnetron sputtering onto a Corning glass is almost unchanged with the thickness of a single-layer film. The inhomogeneity of the perpendicular anisotropy field for a 500 nm film is greater than that for a 100 nm film, and for a multilayer film with a total permalloy thickness of 500 nm, it is greater than that for a homogeneous film of the same thickness.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Physics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Magnetism of Solid State, Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, 620002, Russian Federation
Laboratory of Advanced Magnetic Materials, Institute of Metal Physics UD RAS, Ekaterinburg, 620108, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Vazhenina, I. G.; Важенина, Ирина Георгиевна; Kleshnina, S. A.; Клешнина, Софья Андреевна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Lepalovskij, V. N.; Pasynkova, A. A.; Svalov, A. V.
}
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Aleksandrov, K. S.
The study of elastic symmetry and anisotropy of elastic body waves in gneiss / K. S. Aleksandrov, G. T. Prodayvoda // Geophysical Journal International. - 1994. - Vol. 119, Is. 3. - P. 715-728 . - ISSN 0956-540X
Кл.слова (ненормированные):
anisotropy -- Elastic Properties -- elastic symmetry -- Elastic Wave Velocity -- gneiss -- Gneiss -- phase velocity -- polarization -- Ultrasonics -- Europe, Baltic Shield
Аннотация: Describes a method for determining the effective elastic constants of anisotropic rocks from the results of ultrasonic measurements of the phase velocity of elastic body waves with arbitrary directions of the wave normal in the absence of a priori information on the texture symmetry. The proposed method has been applied to the results of ultrasonic measurements of a twice-deformed gneiss sample from the Lodogian series of the Baltic Shield. Experimental findings conform to triclinic symmetry. -from Authors

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Держатели документа:
Inst of Physics, Siberian Div of Russian Acad Sci, Akademgorodok, Krasnoyarsk, Russia

Доп.точки доступа:
Prodayvoda, G. T.; Александров, Кирилл Сергеевич
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Anisotropic thermal expansion and electronic transitions in the Co3BO5 ludwigite / N. Kazak, A. Arauzo, J. Bartolome [et al.] // Dalton Trans. - 2022. - Vol. 51, Is. 16. - P6345-6357, DOI 10.1039/d2dt00270a. - Cited References: 57. - We are grateful to the Russian Foundation for Basic Research (project no. 20-02-00559 and 21-52-12033) for supporting this paper. This work was performed within the framework of the budget project no. 0287-2021-0013 for the Institute of Chemistry and Chemical Technology SB RAS. We acknowledge the financial support from the Spanish Ministry of Economy, Industry and Competitiviness (MINECO), (Grant No. MAT2017-83468-R) and from the regional Government of Aragón (E12-20R RASMIA project) . - ISSN 1477-9226
Кл.слова (ненормированные):
Activation energy -- Anisotropy -- Cobalt compounds -- Crystal structure -- Electric conductivity -- Electronic properties -- Magnetic moments -- Magnetic susceptibility -- Negative thermal expansion
Аннотация: The investigations of the crystal structure, magnetic and electronic properties of Co3BO5 at high temperatures were carried out using powder X-ray diffraction, magnetic susceptibility, electrical resistivity, and thermopower measurements. The orthorhombic symmetry (Sp.gr. Pbam) was observed at 300 K and no evidence of structural phase transitions was found up to 1000 K. The compound shows a strong anisotropy of the thermal expansion. A large negative thermal expansion along the a-axis is observed over a wide temperature range (T = 300–600 K) with αa = −35 M K−1 at T = 500 K with simultaneous expansion along the b- and c-axes with αb = 70 M K−1 and αc = 110 M K−1, respectively. The mechanisms of thermal expansion are explored by structural analysis. The activation energy of the conductivity decreases significantly above 700 K. Electronic transport was found to be a dominant conduction mechanism in the entire temperature range. The correlations between the thermal expansion, electrical resistivity, and effective magnetic moment were revealed and attributed to the evolution of the spin state of Co3+ ions towards the spin crossover and gradual charge-ordering transition.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza and Departamento de Fisica de la Materia Condensada, Zaragoza, 50009, Spain
Servicio de Medidas Fisicas, Universidad de Zaragoza, Zaragoza, 50009, Spain
Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Arauzo, A.; Bartolome, J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Solovyov, L.; Borus, A.; Борус, Андрей Андреевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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Anisotropy and crystallite misalignment in textured superconductors / D. M. Gokhfeld, S. V. Semenov, M. I. Petrov [et al.] // J. Supercond. Nov. Magn. - 2023. - Vol. 36, Is. 1. - P. 59-65, DOI 10.1007/s10948-022-06454-8. - Cited References: 21. - This work was supported by the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project “Superconducting properties of YBCO incorporated by paramagnetic rare-earth elements” No. 20–42–240008 . - ISSN 1557-1939. - ISSN 1557-1947
Кл.слова (ненормированные):
Critical current -- Anizotropy -- BSCCO -- Texture -- Distribution function -- Magnetization -- Hysteresis loop
Аннотация: A misalignment of anisotropic crystallites causes small values of anisotropy and decreases the critical current density of textured polycrystalline superconductors. To relate the crystallite misalignment and out-plane anisotropy, the magnetic properties of the textured Bi2223 polycrystalline superconductor were investigated. A distribution of orientation angles of crystallites was determined using different data: scanning electron microscopy images and hysteresis magnetization loops when an external magnetic field was applied at different angles with respect to the texturing plane of the sample. It was demonstrated that the standard deviation of the distribution and the magnetic disorder angle of crystallites in textured samples can be determined from the magnetization data in perpendicular directions. These data may be either the irreversible magnetization measured for two different orientations of the sample or the simultaneously measured magnetization projections parallel and perpendicular to the magnetic field.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Semenov, S. V.; Семенов, Сергей Васильевич; Petrov, M. I.; Петров, Михаил Иванович; Nemtsev, I. V.; Немцев, Иван Васильевич; Balaev, D. A.; Балаев, Дмитрий Александрович
}
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Anisotropy of optical absorption of alpha-MnS single crystal / I. S. Edelman [et al.] // Phys. Solid State. - 2001. - Vol. 43, Is. 8. - P. 1549-1551 ; Phys. Solid State. - 2001. - Vol. 43, Is. 8. - P. 1549-1551, DOI 10.1134/1.1395100. - Cited References: 11 . - ISSN 1063-7834. - Вариант Sopus

РУБ Physics, Condensed Matter

Аннотация: The optical absorption spectra of an alpha -MnS single crystal and their temperature behavior in the range from 86 to 300 K are investigated for the (100) plane in the energy range from 8 x 10(3) to 22 x 10(3) cm(-1) for the first time. Comparison of these spectra with those for the (111) plane reveals an essential absorption anisotropy in unpolarized light. The anisotropy is manifested in a much stronger splitting of the lowest energy band for the (100) plane in comparison with that for the (111) plane. With decreasing temperature, the splitting becomes smaller. Possible mechanisms for the anisotropy revealed are proposed. (C) 2001 MAIK "Nauka/ Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Romanova, O. B.; Романова, Оксана Борисовна; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Abramova, G. M.; Абрамова, Галина Михайловна; Markov, V. V.; Марков, Владимир Витальевич

}
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Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate / E. V. Bogdanov, I. N. Flerov // E-MRS fall meeting : conference programme. - 2019. - Ст. E.P.4. - This work was supported by the Russian Science Foundation (RSF) grant (No. 19-72-00023)

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Siberian Federal University, 660074 Krasnoyarsk, Russia
Far Eastern State Transport University, Khabarovsk, Russia 680021
Astafijev Krasnoyarsk State Pedagogical University, 660049 Krasnoyarsk, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Fall Meeting, European Materials Research Society(2019 ; Sept. ; 16-19 ; Warsaw, Poland); European Materials Research Society; Warsaw University of Technology
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Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate / E. A. Mikhaleva, M. V. Gorev, M. S. Molokeev [et al.] // J. Alloys Compd. - 2020. - Vol. 839. - Ст. 155085, DOI 10.1016/j.jallcom.2020.155085. - Cited References: 31. - The reported study was supported by the Russian Science Foundation (project no. 19-72-00023 ). X-ray and dilatometric data were obtained using the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 0925-8388
Кл.слова (ненормированные):
Piezocaloric effect -- Phase transition -- Ferroelectrics -- Thermal expansion -- High-pressure -- Entropy
Аннотация: The role of anisotropy of the thermal expansion in formation of piezocaloric effect (PCE) near ferroelectric phase transitions in NH4HSO4 was studied. Strong difference in linear baric coefficients and as a result in intensive and extensive PCE associated with the different crystallographic axes was found. PCE giving the main contribution to the barocaloric effect were determined at both phase transitions. Rather strong effect of the lattice dilatation on the tuning of PCE was observed. Comparative analysis of PCE at the phase transitions in different materials showed that NH4HSO4 can be considered as a promising solid-state refrigerant. A hypothetical cooling cycle based on alternate using uniaxial pressure along two axes was considered.

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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 Radioelectronics, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Astafijev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич
}
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10.

    Anisotropy of the electromechanical characteristics of SH-waves and Lamb waves in yttrium aluminum borate single crystals / P. P. Turchin, S. I. Burkov, V. I. Turchin [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2022. - Vol. 15, Is. 1. - P. 80-87 ; Журн. СФУ. Матем. и физика, DOI 10.17516/1997-1397-2022-15-1-80-87. - Cited References: 24. - The study was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (research project code FSRZ-2020-0011) . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Анизотропия и электромеханические характеристики SH-волн и волн Лэмба в монокристаллах иттриевого алюмобората

РУБ Mathematics

Кл.слова (ненормированные):
surface acoustic, SH and Lamb waves -- piezoelectrics -- multiferroics -- yttrium aluminum borates -- поверхностные акустические, SH- и Лэмба волны -- пьезоэлектрики -- мультиферроики -- алюмоборат иттрия
Аннотация: The anisotropy of the electromechanical properties of SH-waves and Lamb waves in yttrium aluminum borates, which are nonmagnetic representatives of the RMe3(BO3)4 single crystals family (where R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) with unique properties of magnetoelectrics and multiferroics, has been studied. In the process of the numerical simulation of the acoustic waves characteristics, the values of linear electromechanical constants of YAl3(BO3)4 single crystals, previously measured by ultrasonic pulse echo and quasi-static methods, have been used.
Исследована анизотропия электромеханичеких характеристик SH-волн и волн Лэмба в иттриевых алюмоборатах, которые являются немагнитным представителем семейства монокри- сталлов RMe3(BO3)4 (где R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) с уникальными свойствами магнитоэлектриков и мультиферроиков. При численном моделировании характеристик акустических волн использованы значения линейных электромеханических постоянных монокристаллов YAl3(BO3)4, измеренных ранее ультразвуковым эхо-импульсным и квазистатическим методами.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Turchin, Pavel P.; Турчин, Павел Петрович; Burkov, S. I.; Turchin, Vladimir, I; Pletnev, Oleg N.; Chulkova, Marina Yu; Nechepuryshina, Anastasia G.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]

}
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11.

Anisotropy of the magnetoimpedance in hybrid hetero structure FeNi/SiO2/p-Si / A. V. Lukyanenko [et al.] // Int. conf. "Spin physics, spin chem., and spin technol.". - 2015. - P. 111. - This study was supported by the Russian Foundation for Basic Research, projects nos. 14-02-31156 and 14-02-00234, and the Russian Ministry of Education and Science, project no. 02.G25.31.0043

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Доп.точки доступа:
Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Gustaitsev, A. O.; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Volkov, N. V.; Волков, Никита Валентинович; "Spin physics, spin chemistry, and spin technology", Internnational conference(2015 ; Jun. ; 1-5 ; Saint Peterburg); Физико-технический институт им. А.Ф. Иоффе РАН; Казанский физико-технический институт им. Е. К. Завойского Казанского научного центра РАН; "Инно-мир", центр межрегионального инновационного развития
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12.

Anisotropy of the magnetoresistive properties of granular high-temperature superconductors resulting from magnetic flux compression in the intergrain medium / S. V. Semenov [et al.] // Phys. Solid State. - 2017. - Vol. 59, Is. 7. - P. 1291-1297, DOI 10.1134/S1063783417070241. - Cited References: 26 . - ISSN 1063-7834
Аннотация: To elucidate the origin of the well-known anisotropy of the magnetoresistive properties of granular high-temperature superconductors (HTSs), which is related to the mutual orientation of magnetic field H and transport current j, we investigate the hysteretic dependences of magnetoresistance R(H) of the yttrium HTS sample at the perpendicular (H ⊥ j) and parallel (H || j) configurations. The hysteretic R(H) dependences are analyzed using the concept of the effective field in the intergrain boundaries through which superconducting current carriers tunnel. The effective degree of magnetic flux compression in the intergrain medium at the perpendicular configuration was found to be twice as much as at the parallel one. This approach explains well the anisotropy of the magnetoresistive properties of granular HTSs, which was previously reported by many authors, and the temperature dependences of the resistance in the resistive transition region.

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Публикация на русском языке Анизотропия магниторезистивных свойств гранулярных высокотемпературных сверхпроводников как результат сжатия магнитного потока в межгранульной среде [Текст] / С. В. Семенов [и др.] // Физ. тверд. тела : Наука, 2017. - Т. 59 Вып. 7. - С. 1267–1273

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

Доп.точки доступа:
Semenov, S. V.; Семенов, Сергей Васильевич; Balaev, D. A.; Балаев, Дмитрий Александрович; Pochekutov, M. A.; Почекутов, М. А.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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13.

Antiferromagnetic Resonance and Dielectric Properties of Rare-earth Ferroborates in the Submillimeter Frequency Range / A. M. Kuz'menko [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 1. - P. 113-120, DOI 10.1134/S106377611105013X. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
SPECTROSCOPY
CRYSTAL
Кл.слова (ненормированные):
Antiferromagnetic resonance -- Basic parameters -- Effective anisotropy constant -- Ferroborates -- Ferroics -- Ferromagnetic orderings -- Frequency ranges -- Magnetic interactions -- Magnetoresonance -- Millimeter frequency range -- Rare earth ions -- Submillimeters -- Antiferromagnetic materials -- Crystallography -- Erbium -- Europium -- Ferromagnetic resonance -- Ion exchange -- Magnetic anisotropy -- Magnetic devices -- Magnetic structure -- Permittivity -- Resonance -- Antiferromagnetism
Аннотация: The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe(3)(BO(3))(4) (R = Y, Eu, Pr, Tb, Tb(0.25)Er(0.75)), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)). Ferroborates with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 -> P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe(3+) ions are detected in the range of antiferromagnetic ordering (T < T(N) = 30-40 K) in all ferroborates that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb(0.25)Er(0.75)) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these ferroborates are found, and the magnetoelectric contribution to AFMR is analyzed.

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Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.
Lebedev, S. P.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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14.

Antiferromagnetic resonance and magnetic anisotropy in PrxY1−xFe3(BO3)4 crystals in the region of the magnetic structure transformation “easy axis – easy plane” / A. I. Pankrats, S. M. Zharkov, G. M. Zeer, I. A. Gudim // J. Alloys Compd. - 2022. - Vol. 909. - Ст. 164821, DOI 10.1016/j.jallcom.2022.164821. - Cited References: 37. - The authors acknowledge the assistance of R. Mironov in some resonance measurements. The SEM and EDS investigations were conducted in the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020–0011) of the Ministry of Science and Higher Education of the Russian Federation . - ISSN 0925-8388
Кл.слова (ненормированные):
Magnetically ordered materials -- Rare earth alloys and compounds -- Spin dynamics -- Anisotropy -- Magnetic measurements -- Scanning electron microscopy, SEM
Аннотация: The spin dynamics, magnetic structures and magnetic anisotropy of single crystals PrxY1−xFe3(BO3)4 have been studied using antiferromagnetic resonance (AFMR) in a wide range of frequencies, magnetic fields, and temperatures. The frequency-field dependences of AFMR for the crystals with x = 0.25 and 0.45 are characteristic of antiferromagnets with the easy plane (EP) anisotropy. The crystals with x = 0.75 and 1.0 exhibit frequency-field dependences that are typical for antiferromagnets with the easy axis (EA) anisotropy. In these crystals, a significant decrease in the effective anisotropy fields of praseodymium upon the transition to the spin-flop state has been found. It is shown that this is the main reason for the large lability intervals, within which the regions of coexistence of the collinear and spin-flop states overlap. In the crystal with x = 0.67, the magnetic field applied along the trigonal axis of the crystal leads to the spin reorientation transition from the EA to the EP state. A magnetic phase diagram of the states on the plane "magnetic field - temperature" is built. In this crystal, the effective anisotropy field of praseodymium also decreases upon the transition to the field-induced EP state. Diamagnetic dilution of the praseodymium subsystem leads to the contribution of this subsystem to the total anisotropy field depending almost linearly on the praseodymium concentration.

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

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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15.

Antiferromagnetic resonance and magnetic anisotropy in single crystals of the YFe3(BO3)(4)-GdFe3(BO3)(4) system / A. I. Pankrats [et al.] // Phys. Solid State. - 2008. - Vol. 50, Is. 1. - P. 79-83, DOI 10.1134/S1063783408010150. - Cited References: 16 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
ND3+
Аннотация: The antiferromagnetic resonance in single crystals of the YFe3(BO3)(4)-GdFe3(BO3)(4) system is studied in the frequency range 25-140 GHz and the temperature range 4.2-50.0 K. It is established that the YFe3(BO3)(4) crystal containing only the magnetic subsystem of Fe3+ ions is an antiferromagnet with an easy anisotropy plane. The temperature dependences of the gaps in the antiferromagnetic resonance spectra of GdFe3(BO3)(4) and YxGd1-xFe3(BO3)(4) are used to calculate the contributions of the Fe3+ and Gd3+ subsystems to the magnetic anisotropy of these crystals. The contributions are found to be close in magnitude and have opposite signs. This leads to a relatively weak uniaxial anisotropy field in the crystals under investigation. Since the exchange interaction between the Gd3+ and Fe3+ ions magnetizes the magnetic subsystem of gadolinium, both subsystems start to contribute simultaneously at the Neel temperature of the iron subsystem.

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Держатели документа:
[Pankrats, A. I.
Petrakovskii, G. A.
Bezmaternykh, L. N.
Temerov, V. L.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович
}
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16.

Antiferromagnetic resonance and phase diagrams of gadolinium ferroborate GdFe3(BO3)(4) / A. I. Pankrats [et al.] // J. Exp. Theor. Phys. - 2004. - Vol. 99, Is. 4. - P. 766-775, DOI 10.1134/1.1826168. - Cited References: 16 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
Anisotropy -- Antiferromagnetic materials -- Antiferromagnetism -- Phase diagrams -- Resonance -- Single crystals -- Antiferromagnetic resonance -- Antiferromagnets -- Crystal axis -- Transition fields -- Gadolinium compounds
Аннотация: Antiferromagnetic resonance in single crystals of rhombohedral gadolinium ferroborate GdFe3(BO3)(4) was studied. The frequency-field dependences of antiferromagnetic resonance over the frequency range 26-70 GHz and the temperature dependences of resonance parameters for magnetic fields oriented along the crystal axis and in the basal plane were determined. It was found that the iron subsystem, which can be treated as a two-sublattice antiferromagnet with anisotropy of the easy-plane type, experienced ordering at T = 38 K. At temperatures below 20 K, the gadolinium subsystem with the opposite anisotropy sign strongly influenced the anisotropic properties of the crystal. This resulted in a spontaneous spin-reorientation transition from the easy-plane to the easy-axis state at 10 K. Below 10 K, magnetic field-induced transitions between the states were observed. Experimental phase diagrams on the temperature-magnetic field plane were constructed for fields oriented along the crystal axis and in the basal plane. A simple model was used to calculate the critical transition fields. The results were in close agreement with the experimental values measured at T = 4.2 K for both field orientations. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич
}
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17.

Aplesnin, S. S.
Influence of spin-phonon coupling on the magnetic moment in 2D spin-1/2 antiferromagnet / S. S. Aplesnin // Phys. Lett. A. - 2003. - Vol. 313, Is. 1-2. - P. 122-125, DOI 10.1016/S0375-9601(03)00689-3. - Cited References: 17 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
SQUARE LATTICE
EU2CUO4
MODEL
Кл.слова (ненормированные):
2D Heisenberg model -- spin-phonon interactions -- 2D Heisenberg model -- Spin-phonon interactions -- ferromagnetic material -- anisotropy -- article -- liquid -- magnetism -- mathematical model -- Monte Carlo method -- quantum theory -- thermal conductivity -- vibration
Аннотация: The ground state of two-dimensional Heisenberg spin-1/2 antiferromagnet (AF) with the spin-phonon coupling is studied by the quantum Monte Carlo method. The magnetic moment per site, mean-square vibration of ion, phase diagram of AF long range order-quantum spin. liquid are simulated. The spin-phonon coupling is estimated for R2CuO4, R = Gd, Eu. (C) 2003 Elsevier Science B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Russian Acad Sci, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Br. of Russ. Acad. of Sci., Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
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18.

Aplesnin, S. S.
Quantum Monte Carlo analysis of the 2D Heisenberg antiferromagnet with S=1/2: the influence of exchange anisotropy / S. S. Aplesnin // J. Phys.: Condens. Matter. - 1998. - Vol. 10, Is. 44. - P. 10061-10065, DOI 10.1088/0953-8984/10/44/012. - Cited References: 21 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
SQUARE LATTICE
SYSTEMS
MODEL
Аннотация: The two-dimensional (2D) Heisenberg model with exchange anisotropy Delta = 1 - J(x)/J(z) (J 0) and S

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
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19.

Approach to magnetic saturation and random magnetic anisotropy in nanocrystalline alloy Fe73.5CuNb3Sil3.5B9 / S. V. Komogortsev, R. S. Iskhakov, P. A. Kuznetsov [et al.] // Moscow Int. Symp. on Magnet. (MISM-2011) : Book of abstracts. - 2011. - Ст. 23PO-I-19. - P. 399. - Библиогр.: 1. - Support by Federal Program “Development of the Scientific Potential of Higher Education” (project no. RNP 2.1.1/11470), Federal Target Program “Research and Research-Pedagogical Personnel of Innovation Russia for 2009-2013”, Russian Foundation for Basic Research (project 11-03-00471-а) are acknowledged.

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Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuznetsov, P. A.; Balaev, A. D.; Балаев, Александр Дмитриевич; Bondarenko, G. N.; Бондаренко, Галина Николаевна; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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20.

Asymmetric interfaces in epitaxial off-stoichiometric Fe3+xSi1-x/Ge/Fe3+xSi1-x hybrid structures: Effect on magnetic and electric transport properties / A. S. Tarasov, I. A. Tarasov, I. A. Yakovlev [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 1. - Ст. 131, DOI 10.3390/nano12010131. - Cited References: 61. - The research was funded by RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, project number 20-42-243007, and by the Government of the Russian Federation, Mega Grant for the Creation of Competitive World-Class Laboratories (Agreement no. 075-15-2019-1886). I.A.T. and S.N.V. thank RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, project number 20-42-240012, for partial work related to the development of the simulation model of the pore autocorrelated radial distribution function coupled with the near coincidence site model, the Fe3+xSi1-x lattice distortion analysis, and processing Rutherford backscattering spectroscopy data. The Rutherford backscattering spectroscopy measurements were supported by the Ministry of Science and Higher Education of the Russian Federation (project FZWN-2020-0008) . - ISSN 2079-4991

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
FILMS
   ANISOTROPY
   SI(001)
   DEVICES
   SURFACE
   GROWTH
Кл.слова (ненормированные):
iron silicide -- germanium -- molecular beam epitaxy -- epitaxial stress -- lattice distortion -- dislocation lattices -- FMR -- Rutherford backscattering -- spintronics
Аннотация: Three-layer iron-rich Fe3+xSi1-x/Ge/Fe3+xSi1-x (0.2 < x < 0.64) heterostructures on a Si(111) surface with Ge thicknesses of 4 nm and 7 nm were grown by molecular beam epitaxy. Systematic studies of the structural and morphological properties of the synthesized samples have shown that an increase in the Ge thickness causes a prolonged atomic diffusion through the interfaces, which significantly increases the lattice misfits in the Ge/Fe3+xSi1-x heterosystem due to the incorporation of Ge atoms into the Fe3+xSi1-x bottom layer. The resultant lowering of the total free energy caused by the development of the surface roughness results in a transition from an epitaxial to a polycrystalline growth of the upper Fe3+xSi1-x. The average lattice distortion and residual stress of the upper Fe3+xSi1-x were determined by electron diffraction and theoretical calculations to be equivalent to 0.2 GPa for the upper epitaxial layer with a volume misfit of -0.63% compared with a undistorted counterpart. The volume misfit follows the resultant interatomic misfit of |0.42|% with the bottom Ge layer, independently determined by atomic force microscopy. The variation in structural order and morphology significantly changes the magnetic properties of the upper Fe3+xSi1-x layer and leads to a subtle effect on the transport properties of the Ge layer. Both hysteresis loops and FMR spectra differ for the structures with 4 nm and 7 nm Ge layers. The FMR spectra exhibit two distinct absorption lines corresponding to two layers of ferromagnetic Fe3+xSi1-x films. At the same time, a third FMR line appears in the sample with the thicker Ge. The angular dependences of the resonance field of the FMR spectra measured in the plane of the film have a pronounced easy-axis type anisotropy, as well as an anisotropy corresponding to the cubic crystal symmetry of Fe3+xSi1-x, which implies the epitaxial orientation relationship of Fe3+xSi1-x (111)[0-11] || Ge(111)[1-10] || Fe3+xSi1-x (111)[0-11] || Si(111)[1-10]. Calculated from ferromagnetic resonance (FMR) data saturation magnetization exceeds 1000 kA/m. The temperature dependence of the electrical resistivity of a Ge layer with thicknesses of 4 nm and 7 nm is of semiconducting type, which is, however, determined by different transport mechanisms.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
RAS, Boreskov Inst Catalysis SB, Synchrotron Radiat Facil SKIF, Nikolskiy Prospekt 1, Koltsov 630559, Russia.
Immanuel Kant Balt Fed Univ, REC Smart Mat & Biomed Applicat, Kaliningrad 236041, Russia.
Immanuel Kant Balt Fed Univ, REC Funct Nanomat, Kaliningrad 236016, Russia.
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.
Univ Duisburg Essen, Ctr Nanointegrat, D-47057 Duisburg, Germany.

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Tarasov, I. A.; Тарасов, Иван Анатольевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Bondarev, I. A.; Бондарев, Илья Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Platunov, M. S.; Платунов, Михаил Сергеевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Efimov, Dmitriy D.; Goikhman, Aleksandr Yu.; Belyaev, B. A.; Беляев, Борис Афанасьевич; Baron, F. A.; Барон, Филипп Алексеевич; Shanidze, Lev V.; Шанидзе, Лев Викторович; Farle, M.; Фарле, Михаель; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Volkov, N. V.; Волков, Никита Валентинович; RFBRRussian Foundation for Basic Research (RFBR); Krasnoyarsk Regional Fund of Science [20-42-243007, 20-42-240012]; Government of the Russian Federation [075-15-2019-1886]; Ministry of Science and Higher Education of the Russian Federation [FZWN-2020-0008]
}
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