Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Matsynin A. A.
Заглавие : The effect of the impurities on the magnetic, electronic and optical properties of Mn5Ge3
Место публикации : Chin. J. Phys. - 2020. - Vol. 68. - P.9-18. - ISSN 05779073 (ISSN), DOI 10.1016/j.cjph.2020.06.027
Примечания : Cited References: 29. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects № № 19-42-240016 : «Control of structural, magnetic, electronic, and optical properties by pressure and intercalation into functional compounds with a spinel structure containing 3d and 4f ions» and 18-42-243009: «New magnetic film nanocomposites based on layered GeO/Mn systems: synthesis, experimental and theoretical study of structural and magnetic properties». The calculations were performed with the computer resources of "Complex modeling and data processing research installations of mega-class" SRC "Kurchatovsky Institute” ( http://ckp.urcki.ru )
Аннотация: Earlier, we experimentally showed a significant effect of oxygen on the magnetic and structural properties of Mn5Ge3 due to the formation of a Nowotny phase of Mn5Ge3Ox. Here, in continuation of this study, we present a theoretical study of the magnetic and electronic properties of Mn5Ge3 and Mn5Ge3Dx (D = B, C, O). It was found that hexagonal Mn5Ge3 is a ferromagnetic metal with two nonequivalent manganese atoms in the structure. Our ab initio calculations also predict the existence of a spin-crossover in Mn5Ge3 under pressure. Impurities reduce saturation magnetization and electrical and thermal conductivity; however, the magnetic susceptibility and Curie temperature increase. Microscopic mechanisms of the effect of the impurities on the magnetic and electronic properties Mn5Ge3 are discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bykova L. E., Myagkov V. G., Zhigalov V. S., Matsynin A. A., Velikanov D. A., Bondarenko G. N., Patrin G. S.
Заглавие : Magnetic and structure properties of CoPt-In2O3 nanocomposite films
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory [19-43-240003]
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2020. - Vol. 13, Is. 4. - P.431-438. - ISSN 1997-1397, DOI 10.17516/1997-1397-2020-13-4-431-438; Журн. СФУ. Матем. и физика. - ISSN 2313-6022(eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects no. 19-43-240003
Предметные рубрики: THIN-FILMS
TEMPERATURE
PHASE
Аннотация: The structural and magnetic properties of CoPt-In2O3 nanocomposite films formed by vacuum annealing of the In/(Co3O4 + Pt)/MgO film system in the temperature range of 100–800 °C have been investigated. The synthesized nanocomposite films contain ferromagnetic CoPt grains with an average size of 5nm enclosed in an In2O3 matrix, and have a magnetization of 600 emu/cm3, and a coercivity of 150 Oe at room temperature. The initiation 200 °C and finishing 800 °C temperatures of synthesis were determined, as well as the change in the phase composition of the In/(Co3O4 + Pt)/MgO film during vacuum annealing.Исследованы структурные и магнитные свойства нанокомпозитных пленок CoPt- In2O3, полученных вакуумным отжигом пленочной системы In/(Co3O4 + Pt)/MgO в интервале температур 100 – 800 °C. Синтезированные нанокомпозитные пленки содержали ферромагнитные CoPt-кластеры со средним размером 5 nm, заключенные в матрицу In2O3, и имели намагниченность 600 emu/cm3, коэрцитивную силу 150 Oe при комнатной температуре. Определены температуры начала 200 °C и окончания 800 °C синтеза, а также изменение фазового состава пленки In/(Co3O4 + Pt)/MgO при вакуумном отжиге.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yoo E., Samardak A. Y., Jeon Y. S., Samardak A. S., Ognev A. V., Komogortsev S. V., Kim Y. K.
Заглавие : Composition-driven crystal structure transformation and magnetic properties of electrodeposited Co–W alloy nanowires
Место публикации : J. Alloys Compd. - 2020. - Vol. 843. - Ст.155902. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2020.155902
Примечания : Cited References: 48. - This study was supported by the Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC-TA1703-06, and by the Russian Ministry of Science and Higher Education under the state task (0657 -2020-0013), by Act 211 of the Government of the Russian Federation (02.A03.21.0011).
Аннотация: The cobalt (Co)–tungsten (W) alloys exhibit unique combinations of mechanical and magnetic properties, biocompatibility, resistance against corrosion, wear, and high-temperature, which makes them desirable materials for various practical applications. A nanoporous template with incorporated Co–W alloy nanowires is a soft magnetic composite, whose dielectric and magnetic properties can be tuned through the host material, pore distribution and size, Co–W composition and crystal structure, and geometry of the nanowires. Here, we report the composition-dependent structural and magnetic properties of Co–W alloy nanowires embedded in alumina templates by electrodeposition. The addition of W transforms cobalt from the crystalline hexagonal-close-packed (hcp) Co to a mixed nanocrystalline/amorphous-like Co(W) solid solution with ferromagnetic behavior and composition similar to that of the weakly magnetic Co3W compound. The combination of the approach to magnetic saturation, anisotropy field distribution method, micromagnetic simulations, and first-order reversal curve diagram identification method elucidates the structure-driven magnetization reversal processes in both individual nanowires and magnetostatically coupled array as a whole.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Chekanova L. A., Komogortsev S. V., Nemtsev I. V., Iskhakov R. S.
Заглавие : Structure and Magnetic Properties of the FeCo–C Films Reduced by Carbohydrates
Место публикации : Semiconductors. - 2020. - Vol. 54, Is. 14. - P.1840-1842. - ISSN 1063-7826 (ISSN), DOI 10.1134/S1063782620140079. - ISSN 1090-6479 (eISSN)
Примечания : Cited References: 9. - This work was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 18-42-240006 Nanomaterials with magnetic properties determined by the topological features of the nanostructure)
Аннотация: The structural and magnetic properties of FeCo–C films produced by electroless plating with differentcarbohydrates as reducing agents have been investigated. The surface morphology and coercivities of FeCo–C films are dependent on the iron content and type of reducing agent. The local magnetic anisotropy field value increases with a decrease in Fe content. For all systems, deposits with good soft magnetic properties were obtained, with coercivities less than 12 Oe and saturation magnetizations close to 240 emu/g for FeCo–C film with 30% cobalt. The best soft magnetic properties corresponded to the deposits with bcc structure and grain sizes less than 20 nm.
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Вид документа : Статья из сборника (выпуск монографической серии)
Шифр издания :
Автор(ы) : Ilin, Nikita, Komogortsev S. V., Ivanov, Vitaliy, Kraynova, Galina, Davydenko, Alexander, Tkachenko, Ivan, Iskhakov R. S., Plotnikov, Vladimir
Заглавие : Multiscale magnetic anisotropy in amorphous ferromagnetic ribbon: An example of fecundsib alloy
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : Solid State Phenom. - 2020. - Vol. 312 SSP. - P.275-280. - DOI 10.4028/www.scientific.net/SSP.312.275
Примечания : Cited References: 19. - The reported study was funded by RFBR, project number 19-32-90182. This work was financially supported by the state task of the Ministry of Science and Higher Education of the Russian Federation №0657-2020-0005
Аннотация: An understanding of the magnetic properties in an amorphous alloy requires comprehensive studies of magnetic anisotropy at various scales. In this paper such a study is carried out using amorphous ribbons FeCuNbSiB. The magnetic anisotropy associated with the rolling axis of ribbons does not affect hysteresis loop measurements, but the disappearance of a fingerprint-like pattern in the domain structure occurs in different fields when they are applied along and transverse the rolling axis. A correlation between the local magnetic anisotropy constant and the nanoscale within which the local easy axis is ordered was found.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ilin N.V., Komogortsev S. V., Kraynova G.S., Ivanov V.A., Davydenko A.V., Iskhakov R. S., Plotnikov V.S.
Заглавие : Multiscale magnetic anisotropy in amorphous ferromagnetic ribbon: an example of FeCuNbSiB alloy
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials: Proceedings. - VLadivostok: Dalnauka Publishing, 2020. - Ст.IV.31.02p. - P.111. - ISBN 978-5-8044-1698-1
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samardak A. Yu., Yoo E., Jeon Y. S., Komogortsev S. V., Ognev A.V., Samardak A. S., Kim Y. K.
Заглавие : Magnetic properties and FORC-based characterization of electrodeposited Co–W alloy nanowires
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials: Proceedings. - VLadivostok: Dalnauka Publishing, 2020. - Ст.IV.03.02o. - P.102. - ISBN 978-5-8044-1698-1
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Bykova L. E., Myagkov V. G., Pavlova A. N., Volochaev M. N., Matsynin A. A., Patrin G. S.
Заглавие : CoPt-Al2O3 nanocomposite films: synthesis, structure, and magnetic properties
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [18-42-243009 r_mol_a, 19-43-240003 r_a]; Foundation for Assistance to Small Innovative Enterprises in Science and Technology [11843GU/2017, 0033636]
Место публикации : J. Surf. Ingestig. - 2020. - Vol. 14, Is. 1. - P.47-53. - ISSN 1027-4510, DOI 10.1134/S102745102001022X. - ISSN 1819-7094(eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects no. 18-42-243009 r_mol_a and no. 19-43-240003 r_a, and the Foundation for Assistance to Small Innovative Enterprises in Science and Technology, contract no. 11843GU/2017, code 0033636, U.M.N.I.K. competition.
Предметные рубрики: SOLID-STATE SYNTHESIS
GRANULAR THIN-FILMS
THERMITE SYNTHESIS
PHASE
Аннотация: The structure and magnetic properties of CoPt–Al2O3 nanocomposite films synthesized by the annealing of Al/(Co3O4 + Pt) bilayers on a MgO(001) substrate at 650°C in vacuum are investigated. The synthesized composite films contain ferromagnetic CoPt grains with an average size of 25–45 nm enclosed in a nonconducting Al2O3 matrix. The saturation magnetization (Ms ~ 330 G) and coercivity (Hc ≈ 6 kOe) of the films are measured in the film plane and perpendicular to it. The obtained films are characterized by a spatial rotational magnetic anisotropy, which makes it possible to arbitrarily set the easy magnetization axis in the film plane or perpendicular to it using a magnetic field stronger than the coercivity (H ˃ Hc).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samardak A. S., Ognev A. V., Samardak A. Y., Stebliy E. V., Modin E. B., Chebotkevich L. A., Komogortsev S. V., Stancu A., Panahi-Danaei E., Fardi-Ilkhichy A., Nasirpouri F.
Заглавие : Variation of magnetic anisotropy and temperature-dependent FORC probing of compositionally tuned Co-Ni alloy nanowires
Место публикации : J. Alloys Compd. - 2018. - Vol. 732. - P.683-693. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2017.10.258
Примечания : Cited References: 60. - This work was supported by the Russian Foundation for Basic Research (grant 16-02-01015 А), by the Russian Ministry of Education and Science under the state task (3.5178.2017/8.9), by Act 211 of the Government of the Russian Federation (contract № 02.A03.21.0011) and by the Brain Pool Program (172S-2-3-1928) through the Korean Federation of Science and Technology Societies (KOFST) funded by the Ministry of Science, ICT and Future Planning. Financial support from Iranian Nanotechnology Initiative council is also acknowledged.
Ключевые слова (''Своб.индексиров.''): coercive force--magnetic anisotropy--magnetic hysteresis--binary alloy nanowires--alumina template--electrodeposition--first order reversal curves--stochastic magnetic domain--random anisotropy model
Аннотация: The magnetic microstructure of Co-Ni binary alloy nanowires electrodeposited with controlled composition into nanoporous aluminum oxide templates can be represented as an ensemble of stochastic magnetic domains, whose size is determined by the magnetic correlation length. Using a method based on the approaching of magnetization to saturation, we defined the dimension of regions with magnetic orientation coherency as the stochastic domain size. Based on the experimental measurements of magnetization curves near saturation and first order reversal curves (FORC), we described a relationship between the macroscopic and microscopic parameters of the nanowires depending on the crystal structure observed by high-resolution transmission electron microscopy in terms of the random anisotropy model. The alloy composition strongly determines the crystal structure, in particular, the grain size and hcp/fcc phase distribution, and influences the effective magnetic anisotropy energy providing the direction of easy magnetization in the nanowire arrays. The characterization of Co-Ni arrays by FORC method at room and low temperatures revealed the transformation of magnetic behavior and certain contributions to the energy of the effective magnetic anisotropy.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Tarasov A. S., Yakovlev I. A., Volochaev M. N., Zhаndun V. S., Velikanov D. A., Kuznetsova T. V., Kravtsov A. S., Varnakov S. N., Balymov K. G., Pryahina V., Kosyrev N. N., Shemukhin A., Ovchinnikov S. G.
Заглавие : Relationship between stuctural and magnetic, optical properties of epitaxial Fe1-xSix/Si(111) alloy films
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.2PO-I-29. - P.236
Примечания : Cited References: 1. - The work was supported by the Program of the President of the Russian Federation for the support of leading scientific schools (Scientific School 2886.2014.2), RFBR (grants No. 13-02-01265)
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Chekanova L. A., Iskhakov R. S.
Заглавие : Spin−wave resonance as a way of studying the constant of surface anisotropy, using films of Fe–Ni alloy as an example
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press Incorporation, 2017. - Vol. 81, Is. 3. - P.308-310. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873817030388
Примечания : Cited References: 13
Ключевые слова (''Своб.индексиров.''): anisotropy--deposition--ferromagnetic materials--film thickness--nickel--chemical deposition--ferromagnetic thin films--ni alloys--ni thin films--surface anisotropy--wave resonances--thin films
Аннотация: The effect the thickness and concentration composition of a ferromagnetic thin film have on surface anisotropy constant KS is investigated. Spin–wave resonance is chosen as a way of detecting and measuring the KS value. Fe–Ni thin films are synthesized via chemical deposition. Dependences of KS on the content of Ni in the alloy and a film’s thickness are established. © 2017, Allerton Press, Inc.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Matsynin A. A., Bykova L. E., Zhigalov V. S., Mikhlin Y. L., Volochayev M. N., Velikanov D. A., Aleksandrovsky A. S., Bondarenko G. N.
Заглавие : Solid-state synthesis and characterization of ferromagnetic Mn5Ge3 nanoclusters in GeO/Mn thin films
Место публикации : J. Alloys Compd. - 2019. - Vol. 782. - P.632-640. - ISSN 09258388 (ISSN) , DOI 10.1016/j.jallcom.2018.12.126
Примечания : Cited References: 39. - This study was supported by the Russian Foundation for Basic Research (grants #18-02-00779 , #16-03-00069 , #17-52-53031 ), by Russian foundation for basic research, government of Krasnoyarsk territory, Krasnoyarsk Region science and technology support fund to research project # 18-42-243009 р_мол_а , by the council for grants of the president of Russian federation (SP-1373.2016.3). The XPS and TEM studies were carried out using the facilities of Performance service at Krasnoyarsk Scientific Center.
Ключевые слова (''Своб.индексиров.''): mn-ge system--thin-film solid-state reactions--mn5ge3 alloy--nowotny mn5ge3oy phase--magnetic properties
Аннотация: Mn5Ge3 films are promising materials for spintronic applications due to their high spin polarization and a Curie temperature above room temperature. However, non-magnetic elements such as oxygen, carbon and nitrogen may unpredictably change the structural and magnetic properties of Mn5Ge3 films. Here, we use the solid-state reaction between Mn and GeO thin films to describe the synthesis and the structural and magnetic characterization of Mn5Ge3(Mn5Ge3Oy)-GeO2(GeOx) nanocomposite materials. Our results show that the synthesis of these nanocomposites starts at 180°С when the GeO decomposes into elemental germanium and oxygen and the resulting Ge atoms immediately migrate into the Mn layer to form ferromagnetic Mn5Ge3 nanoclusters. At the same time the oxygen atoms take part in the synthesis of GeOx and GeO2 oxides and also migrate into the Mn5Ge3 lattice to form Mn5Ge3Oy Nowotny nanoclusters. Magnetic analysis assumes the general nature of the Curie temperature increase in carbon-doped Mn5Ge3Cx and Mn5Ge3Oy films. Our findings prove that not only carbon, but oxygen may contribute to the increase of the saturation magnetization and Curie temperature of Mn5Ge3-based nanostructures.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lukyanenko A. V., Tarasov A. S., Shanidze L. V., Yakovlev I. A., Zelenov F. V., Masugin A. N., Ivanov A. B., Baron F. A., Volkov N. V.
Заглавие : Synthesis and transport properties of FET based on Heusler alloy thin films formed by rapid thermal annealing
Коллективы : International School and Conference on optoelectronics, photonics, engineering and nanostructures
Место публикации : J. Phys.: Conf. Ser. - 2019. - Vol. 1410. - Ст.012017. - ISSN 1742-6588, DOI 10.1088/1742-6596/1410/1/012017. - ISSN 1742-6596 (eISSN)
Примечания : Cited References: 10. - This study was supported by the Russian Foundation for Basic Research, project no. 17-02-00302 and supported in part by the Ministry of Education and Science of the Russian Federation and the Siberian Branch of the Russian Academy of Sciences, project II.8.70, and the Presidium of the Russian Academy of Sciences, Fundamental Research Program no. 32 «Nanostructures: Physics, Chemistry, Biology, Basics of Technologies».
Аннотация: In this work we show a preparation technique of Co2FeSi full-Heusler alloy thin films on silicon-on-insulator (SOI) substrates, employing rapid thermal annealing (RTA). The films of the Co2FeSi alloy were formed by a silicidation reaction, caused by RTA, between the ultrathin SOI (001) layer and the Fe/Co layers deposited on it. It is assumed that this technology is compatible with the process of formation of a half-metal source-drain in an advanced CMOS and SOI technology and will be applicable for the manufacture of a source-drain of a field-effect transistor. Schottky barrier field-effect transistors (FET) with a back-gate, based on silicon nanowires with source and drain of a Co2FeSi film, synthesized on an SOI substrate, were manufactured. The transport properties of the device were investigated.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Комогорцев, Сергей Викторович, Крайнова Г. С., Ильин Н. В., Плотников В. С., Чеканова, Лидия Александровна, Немцев, Иван Васильевич, Юркин, Глеб Юрьевич, Исхаков, Рауф Садыкович, Ятманов Д. А.
Заглавие : Особенности ферромагнитного резонанса лент аморфных сплавов FeSiBNbCu различного состава
Место публикации : Материаловедение. - 2019. - № 7. - С. 8-11. - ISSN 1684-579X, DOI 10.31044/1684-579X-2019-0-7-8-11
Примечания : Библиогр.: 25
Аннотация: Исследовано резонансное поглощение СВЧ-волн в аморфных лентах FeSiBNbCu различного состава, полученных быстрой закалкой из расплава. Для величины эффективной намагниченности, рассчитанной по величине резонансного поля, наблюдается линейное снижение с ростом концентрации примеси бора, меди, а также суммарного количества атомов немагнитной примеси в лентах сплава FeSiBNbCu на основе железа.The resonance absorption of microwaves in amorphous FeSiBNbCu tapes of different compositions, prepared by rapid quenching from a melt has been studied. A linear decrease in effective magnetization with increasing boron, copper, and a total nonmagnetic impurity concentration in the FeSiBNbCu iron-based alloy tapes was observed.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vazhenina I. G., Chekanova L. A., Iskhakov R. S.
Заглавие : Spin-Wave Resonance Detection of Nanostructured Magnetic Alloy Inhomogeneities, Using the Example of Co–P and Co–Ni Planar Systems
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 6. - P.713-715. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873819060364
Примечания : Cited References: 12. - The reported study was funded by the Russian Foundation for Basic Research, the Government of Krasnoyarsk Krai, and the Krasnoyarsk Regional Fund of Science as part of research project no. 18-42-243005 “Synthesis and Investigation of Magnetic Properties of Gradient Materials Characterized by a Predetermined Type of the Magnetic Parameter Change.”
Аннотация: Inhomogeneous layered magnetic thin films of amorphous and nanocrystalline Со–Р and Co–Ni alloys are studied via spin-wave resonance. It is found that the formation of a magnetic potential profile specified over the coating thickness leads to characteristic modifications of the spin-wave resonance spectrum. Another important factor that determines the type of modification is the dominant magnetic parameter (the constant of magnetization or exchange coupling).
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nikolaev S. V., Orlov Yu. S., Dudnikov V. A.
Заглавие : Electronic Structure and Conductivity of a Disordered A1–xBx Binary Alloy in the Cluster Approach for the Hubbard Model
Место публикации : J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 5. - P.823-837. - ISSN 10637761 (ISSN), DOI 10.1134/S1063776120100131
Примечания : Cited References: 27. - This study was supported by the Foundation “Basis” for development of theoretical physics and mathematics, Russian Foundation for Basic Research (project no. 19-03-00017), Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project “Electronic correlation effects and multiorbital physics in iron-based materials and cuprates” (no. 19-42-240007) and research project “Features of electron-phonon coupling in high-temperature superconductors with strong electronic correlations” (no. 18-42-240017)
Аннотация: We propose a method for calculating the electronic band structure of disordered systems with strong electron correlations. Various approaches to the description of electrical conductivity of disordered systems are considered. Calculations are based on determining the one-particle Green function of the system, which is averaged over different configurations of a cluster, on the Boltzmann formalism, and the Kubo linear response theory. As the basic model, we use the Hubbard model for an A –xBx binary alloy.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterov, Nikolay, Pakharukova, Vera, Cherepanova, Svetlana, Yakushkin, Stanislav, Gerasimov, Evgeniy, Balaev D. A., Semenov S. V., Dubrovskii A. A., Martyanov, Oleg
Заглавие : Synthesis of Co-Ni alloy particles with the structure of a solid substitution solution by precipitation in a supercritical carbon dioxide
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 24. - Ст.4366. - ISSN 20794991 (eISSN), DOI 10.3390/nano12244366
Примечания : Cited References: 52. - This research was funded by the Russian Science Foundation, grant number № 21-73-00213 (https://rscf.ru/project/21-73-00213/ (accessed on 2 September 2020))The authors are grateful to S.V. Komogortsev and S.V. Stolyar for fruitful discussions and A.A. Krasikov for help in measurements. The magnetic measurements were performed using equipment from the Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences
Аннотация: Mixed Co-Ni bimetallic systems with the structure of a solid substitution solution have been synthesized using the supercritical antisolvent precipitation (SAS) method, which uses supercritical CO2 as an antisolvent. The systems obtained have been characterized in detail using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier-transform infrared (FTIR) spectroscopy, and magnetostatic measurements. It has been found that Co-enriched systems have a defective hexagonal close-packed (hcp) structure, which was described by a model which embedded cubic fragments of packaging into a hexagonal close-packed (hcp) structure. It has been shown that an increase in water content at the precipitation stage leads to a decrease in the size of cubic fragments and a more uniform distribution of them in Co-enriched systems. It has also been shown that mixed systems have the greatest coercivity in the line of samples. Ni-enriched bimetallic systems have a cubic close-packed (ccp) structure with modified crystal lattice parameters.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Zharkov S. M., Bondarenko G. N.
Заглавие : Formation of NiAl shape memory alloy thin films by a solid-state reaction
Место публикации : Solid State Phenomena: Trans Tech Publications Ltd, 2008. - Т. 138, № . - С. 377-384. - ISSN 1662-9779(eissn), DOI 10.4028/www.scientific.net/SSP.138.377
ГРНТИ : 29.19
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kveglis L.I., Kazantseva V.V., Musikhin V.A., Panichkin Yu.V.
Заглавие : Sign-variable thermoelectric effect in magnetoviscous Fe86Mn13C alloy
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Уральское отделение РАН
Место публикации : IV Euro-Asian Symposium "Trends in MAGnetism" Nanospintronics (EASTMAG-2010). School for young scientist "Spintronics": June 28 - Lule 2, 2010"Book of abstracts. - Ekaterinburg, 2010. - P.119
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kveglis, Ludmila I., Yerbolatuly, Dosym E., Noskov, Fedor M., Komogortsev S. V., Volochaev M. N.
Заглавие : Phases, microstructure and magnetic properties in a severely deformed Cr-Ni–Al alloy
Место публикации : J. Supercond. Nov. Magn. - 2023. - Vol. 36, Is. 4. - P.1249-1255. - ISSN 15571939 (ISSN), DOI 10.1007/s10948-023-06567-8. - ISSN 15571947 (eISSN)
Примечания : Cited References: 22. - The authors express their gratitude to Nurgamit Kantay (East-Kazakhstan University named after S. Amanzholov) for his help in conducting the experiment
Аннотация: The phases, microstructure, and magnetic properties in a severely deformed Cr-Ni–Al alloy have been studied. The eutectic microstructure observed in localized regions of the alloy can be interpreted as a result from the super-Arrhenius relaxation of the alloy. According to X-ray diffraction and magnetometry, the nanosized nickel inclusions in the matrix of the chromium-nickel γ-solid solution are formed. It is shown that, after severe (superplastic) deformation, a unidirectional magnetic anisotropy is induced, which may be associated with the antiferromagnetic coupling between the CrNi2 matrix and the nickel inclusions.
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