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Каталог книг и брошюр библиотеки ИФ СО РАН

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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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ehrling S., Senkovska I., Bon V., Evans J. D., Petkov P., Krupskaya Y., Kataev V., Wulf T., Krylov A. S., Vtyurin A. N., Krylova S. N., Adichtchev S., Slyusareva E., Weiss M. S., Buchner B., Heine T., Kaskel S.
Заглавие : Crystal size: Versus paddle wheel deformability: Selective gated adsorption transitions of the switchable metal-organic frameworks DUT-8(Co) and DUT-8(Ni)
Место публикации : J. Mater. Chem. A. - 2019. - Vol. 7, Is. 37. - P.21459-21475. - ISSN 20507488 (ISSN), DOI 10.1039/c9ta06781g
Примечания : Cited References: 106. - The authors thank DFG (FOR 2433) for financial support. We thank HZB for the allocation of synchrotron radiation beam-time and financial support. PP, TW and TH used high performance facilities of ZIH Dresden. TW thanks the European Social Funds for Germany for a PhD fellowship.
Аннотация: Switchable pillared layer metal–organic frameworks M2(2,6-ndc)2(dabco) (DUT-8(M), M = Ni, Co, 2,6-ndc = 2,6-naphthalenedicarboxylate, dabco = 1,4-diazabicyclo-[2.2.2]octane, DUT – Dresden University of Technology) were synthesised in two different crystallite size regimes to produce particles up to 300 μm and smaller particles around 0.1 μm, respectively. The textural properties and adsorption-induced switchability of the materials, obtained from both syntheses, were studied by physisorption of N2 at 77 K, CO2 at 195 K and n-butane at 273 K, revealing pronounced differences in adsorption behavior for Ni and Co analogues. While the smaller nano-sized particles (50–200 nm) are rigid and show no gating transitions confirming the importance of crystallite size, the large particles show pronounced switchability with characteristic differences for the two metals resulting in distinct recognition effects for various gases and vapours. Adsorption of various vapours demonstrates consistently a higher energetic barrier for the “gate opening” of DUT-8(Co) in contrast to DUT-8(Ni), as the “gate opening” pressure for Co based material is shifted to a higher value for adsorption of dichloromethane at 298 K. Evaluation of crystallographic data, obtained from single crystal and powder X-ray diffraction analysis, showed distinct geometric differences in the paddle wheel units of the respective MOFs. These differences are further disclosed by solid-state UV-vis, FT-IR and Raman spectroscopy. Magnetic properties of DUT-8(Co) and DUT-8(Ni) were investigated, indicating a high-spin state for both materials at room temperature. Density functional theory (DFT) simulations confirmed distinct energetic differences for Ni and Co analogues with a higher energetic penalty for the structural “gate opening” transformation for DUT-8(Co) compared to DUT-8(Ni) explaining the different flexibility behaviour of these isomorphous MOFs.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zamkova N. G., Gavrichkov V. A., Sandalov I. S., Ovchinnikov S. G.
Заглавие : Proximity of Ferromagnetic Nickel to Paramagnetic Instability
Коллективы : Russian Foundation for Basic Research [16-02-00273]
Место публикации : JETP Letters. - 2019. - Vol. 109, Is. 4. - P.276-279. - ISSN 0021-3640, DOI 10.1134/S0021364019040131. - ISSN 1090-6487(eISSN)
Примечания : Cited References: 21. - This work was supported by the Russian Foundation for Basic Research (project no. 16-02-00273).
Предметные рубрики: TOTAL-ENERGY CALCULATIONS
WAVE
Аннотация: The phase diagram of Ni in the space of the parameters has been studied within the Kanamori model with the parameters determined from comparison with ab initio calculations for ferromagnetic Ni. The proximity of Ni to the boundary of the transition to a paramagnetic state has been found.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Golovnev N. N., Molokeev M. S., Sterkhova I. V., Lesnikov M. K., Samoilo A. S.
Заглавие : Structure of bis(2-Thiobarbiturate)Tris (2,2-Bipyridyl)Nickel(II) Hexahydrate
Место публикации : J. Struct. Chem. - 2019. - Vol. 60, Is. 1. - P.111-116. - ISSN 00224766 (ISSN) , DOI 10.1134/S0022476619010153
Примечания : Cited References: 15. - The work was performed within the State Task of the Ministry of Education and Science of the RF to the Siberian Federal University for 2017-2019 (4.7666.2017/BCh) using the equipment of the Baikal Analytical Center for Collective Use, the Siberian Branch of the RAS.
Аннотация: The [Ni(Bipy)3](Htba)2·6H2O (I) complex (Bipy is 2,2′-bipyridyl, H2tba is 2-thiobarbituric acid) is synthesized and its structure is determined by single crystal XRD (cif-file CCDC No. 1836529). The crystals of I are monoclinic: a = 13.6618(6) Å, b = 23.9441(9) Å, c = 25.4335(8) Å, β = 93.091(1)°, V = 8307.7(5), space group P21/c, Z = 8. Via multiple intermolecular N–H⋯O, O–H⋯O, and C–H⋯S hydrogen bonds (HBs), the Htba− ions and water molecules form channels within which [Ni(Bipy)3]2+ cations are located. The Bipy molecules and the Htba− ions are involved in C–H⋯O HBs and the π−π interaction. The results of the thermal analysis and IR spectroscopy agree with the single crystal XRD data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Белоусов А.Л., Патрушева Т.Н., Карачаров А.А., Иваненко, Александр Анатольевич, Кирик С.Д., Холькин А.И.
Заглавие : Пленки аморфного и кристаллического оксида никеля, полученные экстракционно-пиролитическим методом для электрохромных ячеек
Место публикации : Хим. технол. - 2019. - Т. 20, № 5. - С. 215-221. - ISSN 1684-5811, DOI 10.31044/1684-5811-2019-20-5-215-221
Примечания : Библиогр.: 8
Аннотация: Представлены исследования тонких пленок оксида никеля, полученных экстракционно-пиролитическим методом на стеклянных и кварцевых подложках при температурах 380-600 °С. Пленки охарактеризованы методами атомно-силовой микроскопии и рентгеновской дифракции. Показано, что на стекле формируются аморфные, а на кварце - кристаллические пленки оксида никеля. Размер зерна в пленках зависит от температуры отжига, при этом повышенные температуры отжига приводят к рекристаллизации и снижению размера зерна в пленках NiO от 130 до 35 нм.Study results of thin films of nickel oxide, produced by the extraction-pyrolitic method on glass and quartz substrates at temperatures 380-600 °С are presented. The film characteristics were obtained by the methods of atomic-force microscopy and X-ray diffraction. It has been found out that amorphous films are formed on glass and crystalline ones of nickel oxide are formed on quartz. Grain dimensions in the films depend on annealing temperature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Saykova, Diana, Saikova, Svetlana, Mikhlin, Yuri, Panteleeva, Marina, Ivantsov R. D., Belova E.
Заглавие : Synthesis and characterization of core-shell magnetic nanoparticles NiFe2O4@Au
Место публикации : Metals. - 2020. - Vol. 10, Is. 8. - Ст.1075. - ISSN 2075-4701(eISSN), DOI 10.3390/met10081075
Примечания : Cited References: 45
Предметные рубрики: NICKEL FERRITE NANOPARTICLES
GOLD NANOPARTICLES
OXIDATION
REDUCTION
Аннотация: In this study, NiFe2O4@Au core–shell nanoparticles were prepared by the direct reduction of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nickel ferrite crystals with an average size 25.2 ± 2.0 nm, and the thick gold shell consists of fused Au0 nanoparticles (NPs). Magnetic properties of the obtained nanoparticles were examined with magnetic circular dichroism. It was shown that the magnetic behavior of NiFe2O4@Au NPs is typical for superparamagnetic NPs and corresponds to that for NiFe2O4 NPs without a gold shell. The results indicate the successful synthesis of core–shell particles with the magnetic nickel ferrite core and thick gold shell, and open the potential for the application of the investigated hybrid nanoparticles in hyperthermia, targeted drug delivery, magnetic resonance imaging, or cell separation. The developed synthesis strategy can be extended to other metal ferrites and iron oxides.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belousov A. L., Patrusheva T. N., Karacharov A. A., Ivanenko A. A., Kirik S. D., Khol'kin A. I.
Заглавие : Amorphous and Crystalline Nickel Oxide Films Obtained by the Extraction-Pyrolysis Method for Electrochromic Cells
Коллективы : program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020" [075-15-2019-1843]; [RFMEFI60719X0307]
Место публикации : Theor. Found. Chem. Eng. - 2020. - Vol. 54, Is. 4. - P.699-705. - ISSN 0040-5795, DOI 10.1134/S0040579520040041. - ISSN 1608-3431(eISSN)
Примечания : Cited References: 8. - This work was performed as part of the program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020"; Grant Agreement no. 075-15-2019-1843; the Project Unique Identifier RFMEFI60719X0307
Предметные рубрики: NIO THIN-FILMS
Аннотация: This paper reports studies of thin films of nickel oxide obtained by the extraction–pyrolysis method on glass and quartz substrates at temperatures of 380–600°C. The films have been characterized by atomic force microscopy and X-ray diffraction. It is shown that amorphous and crystalline nickel oxide films are formed on the glass. The grain size depends on the annealing temperature, while increased annealing temperatures lead to recrystallization and a decrease in the grain size in NiO films from 130 to 35 nm.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pile S., Feggeler T., Schaffers T., Meckenstock R., Buchner M., Spoddig D., Zingsem B., Ney V., Farle M., Wende H., Ohldag H., Ney A., Ollefs K.
Заглавие : Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation
Место публикации : Appl. Phys. Lett. - 2020. - Vol. 116, Is. 7. - Ст.072401. - ISSN 00036951 (ISSN), DOI 10.1063/1.5139881
Примечания : Cited References: 37. - The use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. The authors would like to thank the Austrian Science Foundation (FWF), Project No. I-3050 as well as the German Research Foundation (DFG), Project No. OL513/1-1 for financial support. K.O., H.W., B.Z and M.F. acknowledge additional funding from Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 405553726 – TRR 270 and B.Z and M.F. acknowledge additional funding from Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation
Аннотация: A non-standing characteristic of directly imaged spin-waves in confined micrometer-sized ultrathin Permalloy (Ni80Fe20) structures is reported along with evidence of the possibility to alter the observed state by modifications to the sample geometry. Using micromagnetic simulations, the presence of the spin-wave modes excited in the Permalloy stripes along with the quasi-uniform modes was observed. The predicted spin-waves were imaged in direct space using time resolved scanning transmission X-ray microscopy, combined with a ferromagnetic resonance excitation scheme (STXM-FMR). STXM-FMR measurements revealed a non-standing characteristic of the spin-waves. Also, it was shown by micromagnetic simulations and confirmed using STXM-FMR results that the observed characteristic of the spin-waves can be influenced by the local magnetic fields in different sample geometries.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakov A. V., Karpov I. V., Fedorov L. Y., Demin V. G., Goncharova E. A., Shaihadinov A. A., Zeer G. M., Zharkov S. M.
Заглавие : The effect of microstructural features on the ferromagnetism of nickel oxide nanoparticles synthesized in a low-pressure arc plasma
Место публикации : Physica E. - 2020. - Vol. 124. - Ст.114352. - ISSN 13869477 (ISSN), DOI 10.1016/j.physe.2020.114352
Примечания : Cited References: 31. - The work was performed with a support of the grant of the Russian Science Foundation (Project No. 16-19-10054 ). The electron microscopy 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
Аннотация: Nickel oxide nanoparticles were first synthesized by sputtering high-purity nickel in an oxygen plasma of a low-pressure arc discharge. The structure, morphology, and optical and magnetic properties of NiO nanoparticles were studied by XRD, TEM, FTIR, UV-VIS, and VSM. TEM images showed that the obtained NiO nanoparticles have a narrow particle size distribution and an average particle size of 12 nm. The XRD results and the processing of diffractograms by the Rietveld method showed that the obtained nanoparticles have a face-centered cubic lattice with an average particle size of 13 nm. With decreasing temperature, residual stresses increase and peaks corresponding to the superstructure appear. The band gap of NiO was determined from the optical absorption spectrum and amounted to 3.21 eV. Magnetic measurements showed that, at temperatures of 200 and 300 K, NiO nanoparticles, unlike bulk particles, exhibit ferromagnetic behavior, and at 5 K a magnetic hysteresis loop appears. Based on the studies, a dendritic model of the nanoparticle microstructure is proposed.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Nikolaev N. S., Osipova I. V., Cherepakhin A. V., Nemtsev I. V., Velikanov D. A., Andyuseva V. G.
Заглавие : Core-shell Nanosize Particles Mg@Ni: Synthesis and Properties
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2019. - Vol. 12, Is. 1. - P.28-35. - ISSN 1997-1397, DOI 10.17516/1997-1397-2019-12-1-28-35; \b Журнал СФУ. Математика и физика. - ISSN 2313-6022(eISSN)
Примечания : Cited References: 12
Ключевые слова (''Своб.индексиров.''): core-shell--nanopartials--nickel-magnesium--synthesis in plasma--surface coating--частицы ядро–оболочка--наночастицы--никель-магниевые частицы--плазмохимический синтез--покрытие поверхности частицы
Аннотация: In this paper, we study particles with metallic core (magnesium) - metal shell (nickel) structure, synthesized in metal-containing plasma of high frequency arc discharge. X-ray diffraction analysis, X-ray fluorescence analysis and scanning electron microscopy show that the particles have a uniform nickel shell, which is also indirectly confirmed by comparing the results of hydrogenation of Mg and Mg@Ni particles. Measurement of volume magnetization indicates that shell thickness of most particles is not more than 22 nm.В данной работе исследованы частицы со структурой металлическое ядро (магний) - металлическая оболочка (никель), полученные в металлсодержащей высокочастотной плазме дугового разряда. Методами рентгенофазового анализа, рентгенофлуоресцентного анализа, сканирующей электронной микроскопии показано, что частицы имеют сплошную никелевую оболочку, что также косвенно подтверждается сравнением результатов гидрирования частиц Mg и Mg@Ni. С помощью измерений объемной намагниченности установлено, что наибольшая часть частиц имеет толщину оболочек не более 22 нм.
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