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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkova I. R., Tyryshkina L. E., Volochaev M. N., Zaloga A. N., Shabanova K. A., Ovchinnikov A. V., Lyamkin A. I.
Заглавие : The effect of aluminum-oxide powders on the structure and properties of copper electrodeposited composite coatings
Место публикации : Prot. Met. Phys. Chem. Surf. - 2023. - Vol. 59, Is. 1. - P.71-75. - ISSN 20702051 (ISSN), DOI 10.1134/S2070205122700022. - ISSN 2070206X (eISSN)
Примечания : Cited References: 9
Аннотация: Copper electrodeposited composite coatings containing two types of aluminum-oxide powders with different dispersities (alumina Al2O3-1 and electroexplosive aluminum-oxide nanopowder Al2O3-2) are obtained during the work. The studies show that introducing the powders leads to a change in the microstructure of the composites and a change in the grain growth principles during the formation of the coatings. Refinement and ordering of the grain structure of the coatings occurs and twinning defects and texture are formed. The change in the formation of the microstructure of the composites leads to a change in some operational characteristics: an increase in the microhardness (by 10% in the composites with the addition of alumina and by more than 30% in the coatings with electroexplosive aluminum oxide) and ultimate tensile strength (by 20% in the composites with Al2O3-1 and almost 1.5-fold in the samples with Al2O3-2).
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Li O. A., Nikolaeva E. D., Boev N. M., Vorotynov A. M., Velikanov D. A., Iskhakov R. S., Pyankov V. F., Knyazev Yu. V., Bayukov O. A., Shokhrina A. O., Molokeev M. S., Vasiliev A. D.
Заглавие : Heating of magnetic powders in the ferromagnetic resonance mode at a frequency of 8.9 GHz
Колич.характеристики :8 с
Коллективы : Nanophysics and Nanoelectronics, International Symposium
Место публикации : Phys. Solid State. - 2023. - Vol. 65, Is. 6. - P.963-970. - ISSN 10637834 (ISSN), DOI 10.21883/PSS.2023.06.56109.21H. - ISSN 10906460 (eISSN)
Примечания : Cited References: 25
Аннотация: Nickel ferrite nanoparticles 4 nm in size were synthesized by chemical deposition. Subsequent annealing at T=700°C for 5 h led to an increase in the particle size to 63 nm. The Mossbauer spectra and the frequency-field dependences of ferromagnetic resonance have been measured. It has been shown that freshly prepared powders are superparamagnetic at room temperature. The kinetic dependences of the heating of nanoparticles in the ferromagnetic resonance mode at a frequency of 8.9 GHz were measured. It was found that the maximum rate of temperature increase in this mode for a ferromagnetic powder is an order of magnitude greater than for the superparamagnetic state (1.2 and 0.13 K/s, respectively). The latter is determined by the saturation magnetization of the studied powders.
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3.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Stolyar S. V., Li O. A., Nikolaeva E. D., Vorotynov A. M., Velikanov D. A., Iskhakov R. S., Pyankov V. F., Boev N. M., Kryukova O. V.
Заглавие : Frequency-field dependences of FMR in NiFe2O4 superparamagnetic powders
Коллективы : International Baltic Conference on Magnetism, Балтийский федеральный университет им. И. Канта
Место публикации : V International Baltic Conference on Magnetism. IBCM: Book of abstracts. - 2023. - P.138
Примечания : Cited References: 4
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chekanova L. A., Shepeta N. A., Denisova E. A., Iskhakov R. S., Kuzovnikova L. A., Nemtsev I. V.
Заглавие : Comparison of the microstructure and magnetic properties of films and composite powders based on 3-D metal
Место публикации : J. Supercond. Novel Magn. - 2022. - Vol. 35, Is. 11. - P.3241-3247. - ISSN 15571939 (ISSN), DOI 10.1007/s10948-022-06339-w
Примечания : Cited References: 19. - This work was funded by the Russian Foundation for Basic Research, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20–43-240003
Аннотация: The comparison between the magnetic properties of materials with different curvature and spatial distribution of nanograins, such as particles (3D spatial distribution) and multilayer films (2D) was carried out. Functionally graded Co(P)/Ni(P) and Co(P)/CoNi(P) specimens have been fabricated by electroless deposition. The magnetic and structural properties are characterized by electron microscopy, X-ray diffraction, ferromagnetic resonance spectroscopy, and vibrating sample magnetometer. It was demonstrated that the interaction between the Ni(P) core and Co(P) shell of particles could form the functionally graded materials with tailored structure and coercive force. Furthermore, it was found that the magnetic parameters (the local anisotropy field, ferromagnetic resonance linewidth, and coercivity) are mainly determined by the artificially created interface boundaries for all grains’ spatial distribution. The magnetic anisotropy field and coercivity of Co(P)/Ni(P) flat films were characterized by lower values than those for spherical shell of particles with the same composition, produced by the same method.
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Denisova E. A., Chekanova L. A., Shepeta N.A., Kuzovnikova L. A.
Заглавие : Comparison of the microstructure and magnetic properties of films and composite powders based on 3-d metal
Коллективы : International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials, Балтийский федеральный университет им. И. Канта
Место публикации : 4th International Baltic Conference on Magnetism (IBCM 2021): Book of abstracts. - 2021. - P.193
Примечания : Cited References: 1. - The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-43-240003.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pryazhnikov M. I., Minakov A. V., Lyamkin A. I., Red’kin V. E., Zharkov S. M., Zeer G. M.
Заглавие : Experimental Study of Transport Coefficients of Aqueous Suspensions of Nanodiamonds
Место публикации : Colloid J. - 2020. - Vol. 82, Is. 6. - P.705-712. - ISSN 1061933X (ISSN), DOI 10.1134/S1061933X20060101
Примечания : Cited References: 31. - This work was carried out within the framework of the state order of the Ministry of Science and Higher Education of the Russian Federation (project no. FSRZ-2020-0012)
Аннотация: This article presents experimental data on the coefficients of viscosity and thermal and electrical conductivities, as well as the absorption spectra, of suspensions of ultradispersed diamonds. Suspensions of UDA-S and UDP-A detonation nanodiamond particles, as well as UDP-AG diamond–graphite powder, are used in the experiments. The concentration of nanodiamonds in distilled water is varied within a range of 0.5–5 wt %. It is shown that the technology of purification diamond powders from side products of their synthesis substantially affects the physicochemical properties of aqueous suspensions of these powders.
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7.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ivantsov R. D., Mikhailov M. M., Yurkin G. Yu., Edelman I. S.
Заглавие : Preparation, phase evolution, and magnetic properties of lanthanum manganite perovskite powders synthesized by solid-state reaction
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 1. - Ст.C.P14. - P.294-295. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 6. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Projects No. 18-43-243003 and No. 18-42-243011. The work is supported by the Special Program of the Ministry of Education and Science of the Russian Federation for the Siberian Federal University
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8.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Stolyar S. V., Yaroslavtsev R. N., Bayukov O. A., Balaev D. A., Krasikov A. A., Iskhakov R. S., Vorotynov A. M., Ladygina V. P., Purtov K. V., Volochaev M. N.
Заглавие : Preparation, structure and magnetic properties of synthetic ferrihydrite nanoparticles
Коллективы : International School and Workshop on Complex and Magnetic Soft Matter Systems: Structure and Physico - Mechanical Properties
Место публикации : J. Phys.: Conf. Ser. - 2018. - Vol. 994: 3rd International School and Workshop on Complex and Magnetic Soft Matter Systems: Structure and Physico - Mechanical Properties, CMSMS 2017 (28 - 30 June 2017), Is. 1. - Ст.012003. - , DOI 10.1088/1742-6596/994/1/012003
Примечания : Cited References: 15. - The reported study was funded by Russian Foundation for Basic Research and Krasnoyarsk region according to the research project № 17-43-240527 and Russian Foundation for Basic Research project № 16-03-00969. Support by the Special Program for Siberian Federal University of the Ministry of Education and Science of the Russian Federation is acknowledged
Ключевые слова (''Своб.индексиров.''): magnetic properties--mechanical properties--nanoparticles--powders--sols--solutions
Аннотация: Superparamagnetic ferrihydrite powders with average nanoparticle sizes of 2.5 nm produced by the chemical deposition method. Static and dynamic magnetic properties are measured. As a result of ultrasonic treatment in the cavitation regime of suspensions of ferrihydrite powders in a solution of the albumin protein, the Fe ions are reduced to the metallic state. A sol of ferrihydrite nanoparticles is prepared in an aqueous solution of arabinogalactan polysaccharide.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Isakova V. G., Osipova I. V., Dudnik A. I., Cherepakhin A. V., Zharikova N. V., Nemtsev I. V., Volochaev M. N.
Заглавие : Decoration of carbon nanomaterial powders with dispersed platinum metal particles
Коллективы : Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
Место публикации : Russ. J. Appl. Chem. - 2018. - Vol. 91, Is. 7. - P.1209-1216. - ISSN 1070-4272, DOI 10.1134/S1070427218070212. - ISSN 1608-3296(eISSN)
Примечания : Cited References: 22. - The study was performed with the support and equipment of the Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences.
Предметные рубрики: NANOPARTICLES
PALLADIUM
FULLERENE
ELECTRODE
NANOTUBES
OXIDATION
Ключевые слова (''Своб.индексиров.''): carbon nanomaterials--platinum metal nanoparticles--in situ one-step method
Аннотация: Carbon nanomaterials (fullerite, detonation nanodiamonds, Taunit, fullerenol, fullerene-containing black) were decorated with platinum group metal nanoparticles in situ in one step by low-temperature combustion (~250–270°С) of a powdered mixture of platinum metal acetylacetonate [Pt-M(асас)n, Pt-М = Pt(II), Pd(II), Rh(III), Ir(III), acac = CH3COCHCOCH3, n is the oxidation state of Pt-М] with carbon nanomaterials in air. As shown by thermal analysis, the process is based on thermal oxidative degradation of the organometallic complex, catalyzed by carbon nanomaterials, with oxidation (combustion) of the organic moiety and release of the metal into the condensed phase. The thermal process in an open system occurs in the glowing mode (210–250°С); the size of the nanoparticles formed is 7–30 nm. Under the conditions restricting the air access to the reaction mixture and free outflow of gaseous products formed by oxidation of acac ligands, the nanoparticle size decreases to 3–10 nm. The particle size depends on the metal amount in the initial powder mixture and on the support morphology.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chekanova L. A., Komogortsev S. V., Denisova E. A., Kuzovnikova L. A., Nemtsev I. V., Yaroslavtsev R. N., Iskhakov R. S.
Заглавие : Ferromagnetic resonance linewidth in powders consisting of core–shell particles
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press Incorporation, 2017. - Vol. 81, Is. 3. - P.351-353. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873817030091
Примечания : Cited References: 4
Ключевые слова (''Своб.индексиров.''): ferromagnetic resonance--ferromagnetism--linewidth--powders--resonance--shells (structures)--composite particles--demagnetizing field--ferromagnetic cores--ferromagnetic resonance linewidth--inhomogeneities--magnetic particle--non-ferromagnetic--nonmagnetics--ferromagnetic materials
Аннотация: The dependence of the ferromagnetic resonance linewidth on the thickness of nonmagnetic shells in powders consisting of ferromagnetic core–nonferromagnetic shell composite particles is investigated. It is found that an increase in shell thickness reduces the ferromagnetic resonance linewidth by several times, down to values comparable to those for coatings with compositions similar to that of the particle’s core. The observed effect is assumed to result from suppression of the inhomogeneity of demagnetizing fields in a powder consisting of magnetic particles. © 2017, Allerton Press, Inc.
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