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Вид документа : Однотомное издание
Шифр издания : В37/А 52 рукописный текст
Автор(ы) : Алтунин, Роман Русланович
Заглавие : Фазообразование при твердофазных реакциях в тонких пленках на основе Al/Au и Fe/Si : дис. на соиск. уч. степени канд. физ.-мат. наук : 01.04.07
Выходные данные : Красноярск, 2014
Колич.характеристики :121 с
Коллективы : Российская академия наук, Сибирское отделение РАН, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Примечания : Библиогр.: 114 назв.
ГРНТИ : 29.19.16 + 29.19.15
ББК : В371.26я031 + В375.1я031
Экземпляры :ДС(1)
Свободны : ДС(1)
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Вид документа : Однотомное издание
Шифр издания : В37/А 52 рукописный текст
Автор(ы) : Алтунин, Роман Русланович
Заглавие : Фазообразование при твердофазных реакциях в тонких пленках на основе Al/Au и Fe/Si : автореферат дис. на соиск. уч. степени канд. физ.-мат. наук : 01.04.07
Выходные данные : Красноярск, 2014
Колич.характеристики :22 с
Коллективы : Российская академия наук, Сибирское отделение РАН, Институт физики им. Л.В. Киренского Сибирского отделения РАН, Институт структурной макрокинетики и проблем материаловедения РАН
Примечания : Библиогр.
ГРНТИ : 29.19.16 + 29.19.15
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Altunin R. R., Moiseenko E. T., Zharkov S. M.
Заглавие : Effect of the structural properties on the electrical resistivity of the Al/Ag thin films during the solid-state reaction
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [18-13-00080]
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 4. - P.708-713. - ISSN 1063-7834, DOI 10.1134/S1063783420040034. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 43. - This study was supported by the Russian Science Foundation, project no. 18-13-00080.
Предметные рубрики: LIGHT-EMITTING-DIODES
PHASE-FORMATION
AG
AL
DIFFUSION
SUPPRESSION
INTERFACE
SURFACE
GROWTH
HEAT
Аннотация: Based on the results of in situ electron diffraction study of the solid-state reaction and electrical resistivity measurements on the Al/Ag thin films with an atomic ratio of Al : Ag = 1 : 3, the temperature of the reaction onset has been established and a model of the structural phase transitions has been proposed. The solid-state reaction begins at 70°C with the formation of the Al–Ag solid solution at the interface between the aluminum and silver nanolayers. It has been found that, in the course of the reaction, the intermetallic compounds γ-Ag2Al → μ-Ag3Al are successively formed. It is shown that the possibility of the formation of the μ‑Ag3Al phase during the solid-state reaction in the Al/Ag thin films depends on the aluminum-to-silver ratio, while the formation of the μ-Ag3Al phase begins only after all fcc aluminum has reacted.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Жарков, Сергей Михайлович, Алтунин, Роман Русланович, Моисеенко, Евгений Тимофеевич
Заглавие : Твердофазная реакция в тонкопленочной системе Al/Ag
Коллективы : Научный совет по электронной микроскопии РАН, Федеральный научно-исследовательский центр "Кристаллография и фотоника" РАН, Институт проблем технологии микроэлектроники и особочистых материалов РАН, "Курчатовский институт", научно-исследовательский центр, Российская конференция по электронной микроскопии (28; 2020 ; 5-10 сент.; Черноголовка, Московская обл.), Школа молодых ученых (6; 2020 ; 5-10 сент.; Черноголовка, Московская обл.)
Место публикации : XXVIII Российская конференция по электронной микроскопии (РКЭМ-2020): сб. тез. докладов : в 3-х т. - 2020. - Т. 2. - P.228-229. - ISBN 978-5-6045073-2-2, DOI 10.37795/RCEM.2020.82.12.017
Примечания : Библиогр.: 1
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moiseenko E. T., Zharkov S. M., Altunin R. R., Belousov O. V., Solovyov L. A., Yumashev V. V., Volochaev M. N., Zeer G. M.
Заглавие : Peculiarities of Intermetallic Phase Formation in the Process of a Solid State Reaction in (Al/Cu)n Multilayer Thin Films
Место публикации : JOM. - 2021. - Vol. 73, Is. 2. - P.580-588. - ISSN 10474838 (ISSN), DOI 10.1007/s11837-020-04522-9
Примечания : Cited References: 44. - This work was supported by the Russian Science Foundation under Grant #18-13-00080. 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. The preparation of cross-section samples for TEM investigations was conducted in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: Phase formation in a solid state reaction in Al/Cu bilayer and multilayer thin films was studied by the methods of in situ transmission electron microscopy, electron diffraction, simultaneous thermal analysis and x-ray diffraction. It was established that the phase formation sequences in the (Al/Cu)n (n = 2, 15) multilayer thin films (θ-Al2Cu → γ1-Al4Cu9 → η2-AlCu) and Al/Cu bilayer thin films (θ-Al2Cu → η2-AlCu → γ1-Al4Cu9) were different. It was assumed that the phase formation process in the thin films was strongly affected by a number of copper/aluminum interfaces due to the changes of aluminum and copper diffusion current.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Moiseenko E. T.
Заглавие : Solid-state reactions in Al based multilayer nanosystems
Коллективы : International symposium on self-propagating high temperature synthesis
Место публикации : International symposium on self-propagating high temperature synthesis (15 ; 2019 ; Sept. ; 16-20 ; Moscow). XV International symposium on self-propagating high temperature synthesis (SHS-2019): book of abstracts. - 2019. - P.561-562. - ISBN 978-5-6040595-4-8, DOI 10.24411/9999-0014A-2019-10204
Примечания : Самораспространяющийся высокотемпературный синтез (загл. конф.)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Moiseenko E. T., Altunin R. R.
Заглавие : L10 ordered phase formation at solid state reactions in Cu/Au and Fe/Pd thin films
Место публикации : J. Solid State Chem. - 2019. - Vol. 269. - P.36-42. - ISSN 00224596 (ISSN) , DOI 10.1016/j.jssc.2018.09.009
Примечания : Cited References: 36. - The investigation of Cu/Au system was conducted under the financial support of the Russian Science Foundation (Grant #18-13-00080) and the investigation of Fe/Pd system was supported by the Russian Foundation for Basic Research (Grant #18-03-01173).
Ключевые слова (''Своб.индексиров.''): thin film solid state reaction--intermetallic compound--l10 type ordered structure--order/disorder transformation--in situ ed
Аннотация: To understand the mechanism of mass transfer during solid state reactions and order-disorder transitions the formation processes of CuAuI and L10-FePd ordered structures at solid state reactions in Cu/Au и Fe/Pd bilayer thin films have been carried out using the method of in situ electron diffraction (ED). The value of the long-range order (LRO) parameter has been estimated for the L10 type ordered structures being formed; the order-disorder transition temperatures have been determined. The formation mechanism of the L10 type ordered structures formed at the initial stages of the solid state reaction in the Cu/Au and Fe/Pd thin films has been suggested. In the case of Cu/Au it has been shown that the interdiffusion of copper and gold at the initial stage of the solid state reaction results in the reduced size of the grains of the initial materials, as a result, nanocrystalites of the Cu-Au solid solution are formed, and further, grains of the CuAuI ordered solid solution appear and their growth begins.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Altunin R. R., Moiseenko E. T., Zharkov S. M.
Заглавие : Structural phase transformations during a solid-state reaction in a bilayer Al/Fe thin-film nanosystem
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 1. - P.200-205. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783420010059
Примечания : Cited References: 36. - This study was supported by the Russian Foundation for Basic Research, project no. 18-03-01173a
Аннотация: The processes of phase formation during a solid-state reaction between Fe and Al nanolayers have been investigated by the in situ electron diffraction method. It is established that the solid-state reaction at the interface between iron and aluminum nanolayers begins at ≈100°C with the formation of a disordered Al solid solution in α-Fe. It is shown that intermetallic phases (FeAl6 and/or Fe2Al5, FeAl, and Fe3Al) are successively formed upon further heating.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moiseenko E. T., Altunin R. R., Zharkov S. M.
Заглавие : In situ electron diffraction and resistivity characterization of solid state reaction process in Cu/Al bilayer thin films
Место публикации : Metall. Mat. Trans. A. - 2020. - Vol. 51, Is. 3. - P.1428-1436. - ISSN 10735623 (ISSN), DOI 10.1007/s11661-019-05602-5
Примечания : Cited References: 52. - The authors wish to thank the financial support from the Russian Science Foundation (Grant #18-13-00080)
Аннотация: Solid state reaction processes in Cu/Al thin films have been studied using the methods of in situ electron diffraction and electrical resistivity measurements. The solid state reaction in the Cu/Al thin films has been found to begin already at 88 °C with the formation of the Al2Cu phase in the process of thermal heating in vacuum. The phase sequence at the solid state reaction in the films under study has been determined to be the following: Al2Cu → AlCu → Al4Cu9. A model has been suggested for describing the initial formation stage of intermetallic compounds at the solid state reaction in Cu/Al thin films. According to this model, at the initial stage, the intermetallic compounds are formed as separate crystallites at the interface in the Cu/Al thin films. The suggested model can be applied both to the formation of the first phase, Al2Cu, and to the subsequent phases: AlCu and Al4Cu9. For the Al4Cu9 phase the temperature coefficient of the electrical resistivity has been determined to be equal to αAl4Cu9= 1.1 × 10−3 K−1.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivantsov R. D., Lin C. -R., Ivanova O. S., Altunin R. R., Knyazev Yu. V., Molokeev M. S., Zharkov S. M., Chen Y. -Z., Lin E. -S., Chen B. -Y., Shestakov N. P., Edelman I. S.
Заглавие : Mossbauer and MCD spectroscopy of the Fe3S4 nanoparticles synthesized by the thermal decomposition method with two different surfactants
Место публикации : Curr. Appl. Phys. - 2021. - Vol. 25. - P.55-61. - ISSN 15671739 (ISSN), DOI 10.1016/j.cap.2021.02.013
Примечания : Cited References: 30. - The reported study was funded by Joint Research Project of Russian Foundation for Basic Research № 19-52-52002 and Ministry of Science and Technology, Taiwan MOST № 108-2923-M-153-001-MY3 and № 106-2112-M-153-001-MY3 , and by Russian Foundation for Basic Research with Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science , the research project number 19-42-240005 : “Features of the electronic structure, magnetic properties and optical excitations in nanocrystals of the multifunctional magnetic chalcogenides Fe3S4 and FeSe”. The electron microscopy and electron diffraction 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. The thermal-gravity measurements were carried out with the differential Scanning Calorimeter DSC 204 F-1 Phoenix (NETZSCH) in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS»
Аннотация: Greigite (Fe3S4) nanoparticles (NPs) were fabricated by the thermal decomposition method using two different surfactants: oleylamine (OLA) and 1-hexadecylamine (HDA). In both cases, the synthesized NPs were characterized as the Fe3S4 nanocrystals with minor inclusions of Fe9S11 phase. FT-IR spectroscopy and thermo-gravimetric analysis allow concluding about OLA or HDA shells covering magnetic core of NPs. Mossbauer spectra has revealed deviations of iron ions distribution among crystal positions from that presented in literature for pure greigite. In accordance with these deviations, the pronounce changes are observed in the magnetic circular dichroism (MCD) spectra which manifest themselves as the spectrum shift to higher energies of electromagnetic waves and redistribution of the MCD maximum intensities. These effects are associated with a change in the density of electronic states in the samples due to the redistribution of iron ions between octahedral and tetrahedral positions in nanocrystals under the influence of surfactants.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moiseenko E. T., Yumashev V. V., Altunin R. R., Zeer G. M., Nikolaeva N. S., Belousov O. V., Zharkov S. M.
Заглавие : Solid-state reaction in Cu/a-Si nanolayers: A comparative study of STA and electron diffraction data
Место публикации : Materials. - 2022. - Vol. 15, Is. 23. - Ст.8457. - ISSN 19961944 (eISSN), DOI 10.3390/ma15238457
Примечания : Cited References: 45. - This work was supported by the Russian Science Foundation under grant # 22-13-00313
Аннотация: The kinetics of the solid-state reaction between nanolayers of polycrystalline copper and amorphous silicon (a-Si) has been studied in a Cu/a-Si thin-film system by the methods of electron diffraction and simultaneous thermal analysis (STA), including the methods of differential scanning calorimetry (DSC) and thermogravimetry (TG). It has been established that, in the solid-state reaction, two phases are formed in a sequence: Cu + Si → η″-Cu3Si → γ-Cu5Si. It has been shown that the estimated values of the kinetic parameters of the formation processes for the phases η″-Cu3Si and γ-Cu5Si, obtained using electron diffraction, are in good agreement with those obtained by DSC. The formation enthalpy of the phases η″-Cu3Si and γ-Cu5Si has been estimated to be: ΔHη″-Cu3Si = −12.4 ± 0.2 kJ/mol; ΔHγ-Cu5Si = −8.4 ± 0.4 kJ/mol. As a result of the model description of the thermo-analytical data, it has been found that the process of solid-state transformations in the Cu/a-Si thin-film system under study is best described by a four-stage kinetic model R3 → R3 → (Cn-X) → (Cn-X). The kinetic parameters of formation of the η″-Cu3Si phase are the following: Ea = 199.9 kJ/mol, log(A, s−1) = 20.5, n = 1.7; and for the γ-Cu5Si phase: Ea = 149.7 kJ/mol, log(A, s−1) = 10.4, n = 1.3, with the kinetic parameters of formation of the γ-Cu5Si phase being determined for the first time.
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12.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Moiseenko E. T., Varnakov S. N., Yakovlev I. A., Tarasov I. A., Ovchinnikov S. G.
Заглавие : In-situ transmission electron microscopy and electron diffraction investigations of solid-state reactions in Fe3 Si(111)/Si(111) films
Коллективы : International symposium on self-propagating high temperature synthesis
Место публикации : Int. Symp. on Self-propag. High-Temp. Synth. SHS XIII: Oct. 12-15, 2015, Antalya / Türkiye. - 2015. - Ст.Abstract:1139. - P.81
Примечания : The work was partly supported by the Russian Foundation for Basic Research (grants ## 13-02-01265a, 140300515a) and the Ministry of Education and Science of the Russian Federation (grant #2014/71/1763 in the framework of the state assignment for Siberian Federal University for 2014-2016)
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Yumashev V. V., Moiseenko E. T., Altunin R. R., Solovyov L. A., Volochaev M. N., Zeer G. M., Nikolaeva N. S., Belousov O. V.
Заглавие : Thermokinetic study of aluminum-induced crystallization of a-Si: The effect of Al layer thickness
Колич.характеристики :24 с
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 22. - Ст.2925. - ISSN 20794991 (eISSN), DOI 10.3390/nano13222925
Примечания : Cited References: 70. - This work was supported by the Russian Science Foundation under grant #22-13-00313
Аннотация: The effect of the aluminum layer on the kinetics and mechanism of aluminum-induced crystallization (AIC) of amorphous silicon (a-Si) in (Al/a-Si)n multilayered films was studied using a complex of in situ methods (simultaneous thermal analysis, transmission electron microscopy, electron diffraction, and four-point probe resistance measurement) and ex situ methods (X-ray diffraction and optical microscopy). An increase in the thickness of the aluminum layer from 10 to 80 nm was found to result in a decrease in the value of the apparent activation energy Ea of silicon crystallization from 137 to 117 kJ/mol (as estimated by the Kissinger method) as well as an increase in the crystallization heat from 12.3 to 16.0 kJ/(mol Si). The detailed kinetic analysis showed that the change in the thickness of an individual Al layer could lead to a qualitative change in the mechanism of aluminum-induced silicon crystallization: with the thickness of Al ≤ 20 nm. The process followed two parallel routes described by the n-th order reaction equation with autocatalysis (Cn-X) and the Avrami–Erofeev equation (An): with an increase in the thickness of Al ≥ 40 nm, the process occurred in two consecutive steps. The first one can be described by the n-th order reaction equation with autocatalysis (Cn-X), and the second one can be described by the n-th order reaction equation (Fn). The change in the mechanism of amorphous silicon crystallization was assumed to be due to the influence of the degree of Al defects at the initial state on the kinetics of the crystallization process.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moiseenko E. T., Yumashev V. V., Altunin R. R., Solovyov L. A., Volochaev M. N., Belousov O. V., Zharkov S. M.
Заглавие : Thermokinetic study of intermetallic phase formation in an Al/Cu multilayer thin film system
Место публикации : Materialia. - 2023. - Vol. 28. - Ст.101747. - ISSN 25891529 (eISSN), DOI 10.1016/j.mtla.2023.101747
Примечания : Cited References: 53. - This work was supported by the Russian Science Foundation under grant # 22-13-00313
Аннотация: The solid-state reaction process in a multilayer thin film system (Al/Cu)50 has experimentally been studied using the methods of simultaneous thermal analysis (STA) and in situ electron diffraction. A detailed kinetic analysis of the phase formation processes during the solid-state reaction has shown that the observed solid-state transformations can be described by a statistically significant kinetic model where each stage corresponds to the reaction of the n-th order with autocatalysis. The low-temperature stage has been demonstrated to be attributable to the formation of the θ-Al2Cu phase, with the medium-temperature and high-temperature ones corresponding to the α2-AlCu3 and γ1-Al4Cu9 phases, respectively. The kinetic parameters for the formation of the phases θ-Al2Cu, α2-AlCu3 and γ1-Al4Cu9 have been determined. It has been shown that the kinetic model describing the solid-state reaction in the Al–Cu multilayer thin film system is in best agreement with the experimental data in the case of a competition between the formation stages of the α2-AlCu3 and γ1-Al4Cu9 phases.
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Жарков, Сергей Михайлович, Алтунин, Роман Русланович, Моисеенко, Евгений Тимофеевич, Юмашев, Владимир Витальевич
Заглавие : Кинетика фазообразования при твердофазной реакции в многослойных тонкопленочных наносистемах Al/Cu
Коллективы : Научный совет по электронной микроскопии РАН, Федеральный научно-исследовательский центр "Кристаллография и фотоника" РАН, Российская конференция по электронной микроскопии "Современные методы электронной, зондовой микроскопии и комплементарных методов исследованиях наноструктур и наноматериалов" (29; 2022 ; 29-31 авг.; Москва)
Место публикации : XXIX Российская конференция по электронной микроскопии (РКЭМ-2022): сб. тез. докладов. - 2022. - P.279
Примечания : Библиогр.: 1. - Работа выполнена при финансовой поддержке Российского научного фонда (грант № 22-13-00313)
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Yumashev V. V., Moiseenko E. T., Belousov O. V., Solovyov L. A., Volochaev M. N., Zeer G. M.
Заглавие : Kinetic study of a solid-state reaction in Ag/Al multilayer thin films by in situ electron diffraction and simultaneous thermal analysis
Коллективы : Russian Science Foundation, RussiaRussian Science Foundation (RSF) [181300 080]
Место публикации : J. Alloys Compd. - 2021. - Vol. 871. - Ст.159474. - ISSN 0925-8388, DOI 10.1016/j.jallcom.2021.159474. - ISSN 1873-4669(eISSN)
Примечания : Cited References: 47. - This work was supported by the Russian Science Foundation, Russia under grant #181300 080
Предметные рубрики: STRUCTURAL PHASE-TRANSFORMATIONS
COMMITTEE RECOMMENDATIONS
ICTAC KINETICS
Аннотация: A solid-state reaction process in Ag/Al multilayer thin films has been investigated by the methods of in situ electron diffraction, simultaneous thermal analysis, transmission electron microscopy and X-ray diffraction with the aim of studying the phase formation kinetics of intermetallic compounds. The sequence of the phase transformations in the solid-state reaction has been established: Ag+Al→(Ag)+(Al)→(Ag)+δ-Ag2Al→μ-Ag3Al. The process of the solid-state interaction has been shown to consist of two steps; each of them is described by a kinetic model of the nth order reactions with autocatalysis. The kinetic parameters of the autocatalytic process of the phase formation for δ-Ag2Al and µ-Ag3Al, have been determined, in particular, their apparent activation energy: 126 kJ/mol and 106 kJ/mol, respectively.
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17.

18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivantsov R. D., Lin C. -R., Chen Y. -Z., Ivanova O. S., Altunin R. R., Knyazev Yu. V., Molokeev M. S., Zharkov S. M., Shestakov N. P., Sukhachev A. L., Edelman I. S.
Заглавие : Effect of surfactants on the structure, phase composition, and magnetic properties of FexSy nanoparticles synthesized by thermal decomposition
Место публикации : Nanobiotechnol. Rep. - 2022. - Vol. 17, Is. 3. - P.336-344. - ISSN 26351676 (ISSN), DOI 10.1134/S2635167622030089
Примечания : Cited References: 27. - This study was supported by the Russian Foundation for Basic Research with Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, the research project no. 19-42-240005: “Features of the Electronic Structure, Magnetic Properties, and Optical Excitations in Nanocrystals of Multifunctional Magnetic Chalcogenides Fe3S4 and FeSe” and the Russian Foundation for Basic Research and the Ministry of Science and Technology of Taiwan, joint projects nos. 19-52-52002 and 109-2112-M-153-003 and 108-2923-M-153-001-MY3The electron-microscopy study was carried out at the Laboratory of Electron Microscopy of the Center for Collective Use of the Siberian Federal University within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (research code FSRZ-2020-0011). The magnetic measurements were carried out on a vibrating sample magnetometer at the Krasnoyarsk Regional Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
Аннотация: The effect of surfactants on the structure, morphology, and magnetic properties of FexSy iron-sulfide nanoparticles synthesized by thermal decomposition is studied. Oleylamine, hexadecylamine, and octadecylamine are used as surfactants. It is established by X-ray and electron-diffraction analysis combined with Mossbauer spectroscopy that, in samples 1 and 2 prepared using oleylamine and hexadecylamine, respectively, the Fe3S4 greigite phase dominates, with an inverse spinel structure isostructural to the iron oxide Fe3O4 magnetite with minor Fe9S11 impurities. Deviations in the distribution of iron cations over the tetrahedral and octahedral sites relative to the bulk greigite crystals are observed. The nanoparticles synthesized using octadecylamine (sample 3) are found to be multiphase with a greigite fraction of ~20%. In all three cases, as showed the results of transmission electron microscopy and Fourier transform infrared spectroscopy together with thermogravimetry analysis, the magnetic nanoparticles have an organic shell chemically bonded to their magnetic core, which prevents the agglomeration of the particles. This shell is much more massive in samples 2 and 3. The magnetization values for samples 1 and 2 are similar to those of greigite nanoparticles reported in publications, while the magnetization of sample 3 is several times lower, in accordance with the greigite fraction in it. The combination of fairly high magnetization with a massive organic shell allows one to consider hexadecylamine to be a promising surfactant for the synthesis of iron-sulfide nanoparticles protected from external impact and agglomeration.
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Semenova Yu. G., Moiseenko E. T., Varnakov S. N.
Заглавие : In situ transmission electron microscopy investigations of solid-state synthesis in thin films
Коллективы : International symposium on self-propagating high temperature synthesis
Место публикации : XI Int. symp. self-propagat. high temp. synth. (SHS-2011): book of abstracts. - 2011. - Ст.4C-2. - P.78-79. - ISBN 978-5-6040595-4-8
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Moiseenko E. T., Varnakov S. N.
Заглавие : In situ transmission electron microscopy and electron diffraction investigations of solid-state reactions in thin-film nanosystems
Коллективы : International symposium on self-propagating high temperature synthesis (12; 2013 ; Oct. ; 21–24; South Padre Island, USA )
Место публикации : XII Int. symp. self-propagat. high temper. synth. (SHS-2013): book of abstracts/ org. com. I. N. Flerov [et al.] ; progr. com. V. I. Zinenko [et al.]. - 2013. - P.203-204
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