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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chzhan A. V., Podorozhnyak S. A., Mal'tsev V. K., Krayukhin I. N., Patrin G. S.
Заглавие : Allotropic modifications of cobalt upon chemical deposition
Место публикации : Phys. Solid State. - 2021. - Vol. 63, Is. 1. - P.42-46. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783421010054
Примечания : Cited References: 17. - This study was supported in part by the Russian Foundation for Basic Research, project no. 18-02-00161-a
Аннотация: The effect of the solution acidity on the crystal structure of cobalt during its chemical deposition is reported. It has been shown using the structural and magnetic examination and nuclear magnetic resonance study that the change in the working solution acidity leads to deposition of cobalt with different allotropic modifications in the nearest environment: the hcp type in the small (up to ~8.5) pH region and the fcc type in the large (over ~8.5) pH region. The formation of these cobalt modifications is attributed to the size effects caused by a decrease in the particle size with increasing pH.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Kuzovnikova L. A., Iskhakov R. S., Kuzovnikov A., Lepeshev A. A., Nemtsev I. V., Saunin V. N., Telegin S. V., Bondarenko G. N., Mal'tsev V. K.
Заглавие : Bulk CoNiFe-SiB amorphous and nanostructured alloys produced by plasma spray deposition and dynamic compaction: formation of soft magnetic properties
Коллективы : International Conference on Magnetism
Место публикации : Phys. Procedia/ International Conference on Magnetism (20 ; 2015 ; Jul ; 5-10 ; Barselona, Spain): Elsevier, 2015. - Vol. 75. - P.1238-1243. - ISSN 1875-3892, DOI 10.1016/j.phpro.2015.12.136
Примечания : Cited References: 9. - This work was supported by Russian Foundation of Basic Research 15-08-06673 and RFBR-KRFS 15-42-04171
Ключевые слова (''Своб.индексиров.''): bulk nanostructured materials--dynamic compaction--plasma spray deposition--magnetic properties
Аннотация: The bulk nanostructured Co58Ni10Fe5B16Si11 alloys were prepared by dynamic compaction and plasma spray deposition techniques. The investigation of structure and magnetic properties of bulk samples was carried out by X-ray diffraction, electron microscopy and correlation magnetometry. The bulk samples produced by both methods can be characterized as a heterophase system. The highest value of permeability 20 · 103 for plasma spraying coating is achieved when volume fraction of nanocrystalline phase with Curie temperature Tc ∼ 640 K is increased to 30%. The magnetic characteristics, such as the saturation magnetization, the Bloch constant, the local magnetic anisotropy field, the ferromagnetic resonance linewidth, and the coercivity remain unchanged after both compaction techniques. It was shown that the plasma spraying method allows to obtain bulk magnetically soft materials with magnetic parameters that are not inferior to the characteristics of a thermally treated rapidly quenched ribbon with the same composition.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kuzovnikova L. A., Denisova E. A., Iskhakov R. S., Kuzovnikov A. A., Nemtsev I. V., Mal'tsev V. K.
Заглавие : Bulk nanostructured materials produced by dynamic compaction of composite Co-P/Cu and Al2O3/Co-P core-shell particles
Коллективы : Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.P10.19. - P.487. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : This work was supported by Russian Foundation of Basic Research 15-08-06673, 16-03-00256, 16-03-00969 and RFBR-KRFS 15-42-04171
Ключевые слова (''Своб.индексиров.''): dynamic compaction--nanostructured materials--magnetic properties
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kuzovnikova L. A., Denisova E. A., Komogortsev S. V., Balaev A. D., Mal'tsev V. K., Bondarenko G.N.
Заглавие : Co-Cu Alloys synthesized by mechanical alloying from the powder precursors with excess enthalpy
Коллективы : "Physics, Chemistry and Application of nanostructures", International conference
Место публикации : Physics, Chemistry and Application of nanostructures: Proceedings of the International conference "Nanomeeting - 2009" : Reviews and short notes/ ред.: V. E. Borisenko, S. V. Gaponenko, V. S. Gurin. - 2009. - P.272-275
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Kuzovnikova L. A., Iskhakov R. S., Kuzovnikov A. A., Nemtsev I. V., Mal'tsev V. K.
Заглавие : Cobalt-based bulk nanostructured materials prepared via the dynamic compacting of core–shell composite particles
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2016. - Vol. 80, Is. 11. - P.1377-1380. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873816110198
Примечания : Cited References: 12. - This work was supported by the Russian Foundation for Basic Research, project nos. 15-08-06673, 16-03-00969, and RFBR and KRFS 15-42-04171.
Ключевые слова (''Своб.индексиров.''): composite materials--bulk nanostructured materials--chemical deposition--cobalt-based--composite particles--dynamic compaction--magnetic characteristic--nano-structured--structural and magnetic characteristics--powders
Аннотация: Bulk nanostructured Co–P/Cu and Al2O3/Co–P composites are fabricated via dynamic compaction. The initial core–shell particles are synthesized by means of chemical deposition. Structural and magnetic characteristics of the composites are investigated. It is shown that the use of composite particles allows homogeneous compacts with the structure and magnetic characteristics of initial powders to be obtained. © 2016, Allerton Press, Inc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Turpanov I. A., Zharkov S. M., Velikanov D. A., Maltsev V. K., Li L. A., Lantsev V. V. , Lee C. -G.
Заглавие : Dependence of magnetic properties on ferromagnetic layer thickness in trilayer Co/Ge/Co films with granular semiconducting spacer
Место публикации : J. Magn. Magn. Mater. - 2006. - Vol. 306, Is. 2. - P.218-222. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2006.02.259
Примечания : Cited Reference Count: 8
Аннотация: We have investigated the magnetic properties of trilayer films of Co-Ge-Co. At a fixed thickness of germanium of 3.5 mn, the formation and distribution of metastable amorphous and cubic phases depends on the thickness of the ferromagnetic layer. The portion of the stable hexagonal phase is affected, too. Possible mechanisms for forming the observed magnetic structure are discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Iskhakov R. S., Stolyar S. V., Komogortsev S. V., Chekanova L. A., Maltsev V. K., Kalinin Y. E., Sitnikov A. V.
Заглавие : Exchange interaction in the Co-SiO2 nanocomposite films
Место публикации : TRENDS IN MAGNETISM. - 2011. - Vol. 168-169. - С. 265-268. - ISSN 10120394 (ISSN); 9783037850213 (ISBN), DOI 10.4028/www.scientific.net/SSP.168-169.265
Ключевые слова (''Своб.индексиров.''): exchange coupling parameter--ferromagnetic resonance--granular composite films--cobalt--exchange coupling--exchange interactions--ferromagnetic materials--ferromagnetic resonance--ferromagnetism--magnetic resonance measurement--nanocomposite films--nanocomposites--nuclear magnetic resonance--resonance--silicon compounds--spin waves--cobalt--exchange coupling--exchange interactions--ferromagnetic materials--ferromagnetic resonance--ferromagnetism--magnetic resonance measurement--magnetism--nanocomposite films--nuclear magnetic resonance--spin fluctuations--spin waves--co content--coupling parameters--dispersion relations--granular composite films--magnetic measurements--nanogranulars--nmr studies--structural state--granular composites--nano-granular--standing spin waves--composite films--composite films
Аннотация: The properties of Co-SiO2 nanogranular composite films, containing a Co volume fraction ranging from 0.3 to 0.8, have been characterized by means of magnetic measurements, NMR study, and ferromagnetic resonance. Thermal decrease of CoX(SiO2)100-X magnetization follows the T3/2 law and allows to estimate the exchange interaction constant A. With growing nominal Co content the transitions from granular to continuous structural state at 36% Co are registered by FMR measurements. The spectrum of standing spin-wave has been detected in the perpendicular experiment configuration for films with the Co content above 52 vol. %. It is found that the type of the dispersion relation of spin waves in Co-SiO2 composite films is affected by the exchange coupling fluctuations.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Patrin K. G., Turpanov I. A., Marushchenko E. A., Patrin K. G., Kobyakov A. V., Maltsev V. K., Yushkov V. I.
Заглавие : Magnetic and magnetoresistance properties of (Co/Ge)n films
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2014): Book of abstracts. - 2014. - Ст.1PO-K-24. - P.557. - ISBN 978-5-91978-025-0
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Turpanov I. A., Patrin K. G., Marushchenko E. A., Kobyakov A. V., Maltsev V. K., Yushkov V. I.
Заглавие : Magnetic and magnetoresistance properties of (Co/Ge)n films
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Solid State Phenom.: Selected, peer reviewed papers/ ed.: N. Perov, A. Semisalova: Trans Tech Publications Ltd, 2015. - Vol. 233-234: Achievements in Magnetism. - P.423-426. - ISSN 1662-9779, DOI 10.4028/www.scientific.net/SSP.233-234.423. - ISSN 978-3-03835-482-6
Предметные рубрики: Achievements in magnetism
Spintronics and magnetotransport
Ключевые слова (''Своб.индексиров.''): bilayer structure magnetization--cobalt--coercivity--ferromagnetic metal/semiconductor films--germanium interface--magnetoresistance--schottky barrier
Аннотация: The magnetic and electrical properties of (Co/Ge)nfilms are experimentally studied. It is established that at the Co/Ge interfacean intermediate magnetic layer forms. Twophases of cobalt, one is a face-centered cubic phase and the other ispresumably a Co–Ge alloy with a weakly ferromagnetic order, have been found toexist. A “dead” layer no more than 2 nm in thickness is formed at the interface.This layer affects the magnetic behavior andmagnetoresistive effect in the investigated structures.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Iskhakov R. S., Barnakov Ch. N., Komogortsev S. V., Mal'tsev V. K., Momot N. A., Chekanova L. A.
Заглавие : Magnetic Co nanoparticles in the matrix of high-porous amorphous carbon
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-2008): June 20-25, 2008, Moscow : book of abstract. - 2008. - Ст.22PO-8-34. - p.287-288
Примечания : Библиогр.: 1. - Support by Russian program “Development of Science in High School” (2006-2008)–RNP.2.1.1.7376; the grant RFBR 07-02-01172-а; National Science Fund (2008, PhD RAS) are acknowledged
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Shaikhutdinov K. A., Mal'tsev V. K., Okotrub A. V., Kudashov A. G., Shubin U. V.
Заглавие : Magnetic properties of NixCo1-x nanoparticles in carbon nanotubes
Место публикации : The Physics of Metals and Metallography. - Екатеринбург: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд), 2006. - Т. 102, №SUPPL. 1. - P. - ISSN 0031-918X, DOI 10.1134/S0031918X06140171. - ISSN 1531-8672(eissn)
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Kuzovnikova L. A., Komogortsev S. V., Denisova E. A., Balaev A. D., Mal'tsev V. K., Bondarenko G. N.
Заглавие : Magnetostructural Investigation of Ball-Milled Cobalt-Copper Alloy
Место публикации : Phys. Met. Metallogr. - Vol. 102, Suppl. 1, Chapter 11. - р.S64-S66. - DOI 10.1134/S0031918X0614016X
Примечания : Библиогр.: 6. - Russian Foundation for Basic Research (project no. 04-02-16230)
Аннотация: In this work we investigate a metastable inhomogeneous Co–Cu alloy produced by mechanical alloying. We use both conventional structural method (X-ray diffraction) and magnetic measurements of M(T) and M(H) dependences to obtain additional information about the process of mechanical alloying.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzovnikova L. A., Denisova E. A., Komogortsev S. V., Nemtsev I. V., Iskhakov R. S., Chekanova L. A., Mal'tsev V. K.
Заглавие : Magnetostructural investigations of bulk nanostructured (Co-P)100–xCux alloys
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press Incorporation, 2017. - Vol. 81, Is. 3. - P.295-297. - ISSN 10628738 (ISSN), DOI 10.3103/S106287381703025X
Примечания : Cited References: 9
Ключевые слова (''Своб.индексиров.''): physics--bulk materials--composite particles--magnetic microstructures--nano-structured--powders
Аннотация: Magnetostructural investigations of bulk nanostructured Co–P/Cu composites prepared by dynamic compacting are performed. The magnetic microstructure of the obtained materials is characterized. It is shown that the use of composite particles allows us to create bulk materials with the structures and main magnetic properties of the initial powders. © 2017, Allerton Press, Inc.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzovnikova L. A., Denisova E. A., Nemtsev I. V., Iskhakov R. S., Komogortsev S. V., Kuzovnikov A. A., Maltsev V. K., Shepeta N. A.
Заглавие : Magnetostructural study of nanostructured and amorphous bulk alloys (Co–P)100–xCux
Место публикации : J. Struct. Chem. - 2021. - Vol. 62, Is. 5. - P.802-809. - ISSN 00224766 (ISSN), DOI 10.1134/S0022476621050164
Примечания : Cited References: 19. - The study was supported by RFBR, the Government of the Krasnoyarsk Region, and the Krasnoyarsk Regional Science Foundation within project No. 20-43-240003
Аннотация: The work reports a magnetostructural study of bulk nanostructured composite materials Co–P/Cu prepared by dynamic compaction (DC) and uniaxial cold pressing (CP). The initial particles with amorphous and crystalline structure are synthesized by chemical deposition. Magnetic characteristics of composites (saturation magnetization, Bloch constant, local anisotropy field, ferro-magnetic resonance line width, coercive force) are studied. The phase compositions of initial composite particles and compacts prepared by two methods (DC and CP) are determined from the anisotropy field and the Bloch constant values using magnetic phase analysis. It is shown that the use of composite particles in dynamic compaction allows obtaining homogeneous nanostructured bulk materials while preserving magnetic characteristics of initial powders.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Maltsev V. K., Fish G. I., Tsifrinovich V. I.
Заглавие : NMR during kinetic transitions from amorphous to crystalline state in cop
Место публикации : Fiz. Tverd. Tela. - 1981. - Vol. 23, Is. 4. - P.1148-1150. - ISSN 0367-3294
Примечания : Cited References: 6
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ignatchenko V. A., Maltsev V. K., Reingardt A. E., Tsifrinovich V. I.
Заглавие : New mechanism for formation of nuclear-spin echo
Место публикации : JETP Letters. - 1983. - Vol. 37, Is. 9. - P.520-522. - ISSN 0021-3640
Примечания : Cited References: 2
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Maltsev V. K., Krayukhin I. N., Turpanov I. A.
Заглавие : NMR studies of the magnetic state of interfacial cobalt in (Co/Ge)(n) films
Коллективы : Russian Foundation for Basic Research [11-02-00675-a]
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013. - Vol. 117, Is. 6. - P.1097-1100. - ISSN 1063-7761, DOI 10.1134/S1063776113140033. - ISSN 1090-6509
Примечания : Cited References: 19. - We thank L. A. Li for the help in preparing the films and G. V. Bondarenko for the X-ray measurements. This work was supported by the Russian Foundation for Basic Research (project no. 11-02-00675-a).
Предметные рубрики: SUPERLATTICES
DEPENDENCE
THICKNESS
SPACER
LAYER
Аннотация: The results of NMR studies of film structures in a cobalt-germanium system as a function of the cobalt layer thickness are presented. Two phases of cobalt, one is a face-centered cubic phase and the other is presumably a Co-Ge alloy with a weakly ferromagnetic order, have been found to exist. A "dead" layer no more than 2 nm in thickness is formed at the interface.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Turpanov I. A., Kobyakov A. V., Velikanov D. A., Patrin K. G., Li L. A., Maltsev V. K., Zharkov S. M., Yushkov V. I.
Заглавие : Synthesis and magnetic states of cobalt in three-layer Co/Ge/Co films
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2014. - Vol. 56, Is. 2. - P.302-309. - ISSN 1063-7834, DOI 10.1134/S1063783414020255. - ISSN 1090-6460
Примечания : Cited References: 13. - This study was supported by the Russian Foundation for Basic Research (project no. 11-02-00675-a).
Предметные рубрики: FERROMAGNETIC LAYER THICKNESS
NANOSTRUCTURES
BEHAVIOR
SPACER
Аннотация: The magnetic properties of three-layer Co-Ge magnetic films have been studied experimentally as a function of technological conditions of their deposition. It has been found that the films deposited at a high deposition rate have a granular structure, and the films obtained at a low deposition rate have an X-ray amorphous structure. Electron microscopy and nuclear magnetic resonance studies have demonstrated that, at the same cobalt layer thickness, the semiconductor granule sizes depend on the average semiconductor layer thickness and correlate with the formation of different cobalt phases (amorphous, cubic, and hexagonal). The thermomagnetic properties of the films have been investigated. © 2014 Pleiades Publishing, Ltd.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chzhan A.V., Patrin G. S., Kiparisov S. Ya., Seredkin V. A., Maltsev V. K., Krayukhin I. N.
Заглавие : The induced anisotropy and its influence on absorption of the NMR and domain structure of Co-P amorphous films
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Solid State Phenomena. - 2011. - Vol. 168-169. - P.145-148. - ISSN 10120394 ; 9783037850213, DOI 10.4028/www.scientific.net/SSP.168-169.145
Ключевые слова (''Своб.индексиров.''): amorphous magnetic films--coercive force--domain structure--induced anisotropy--nuclear magnetic resonance--amorphous films--cobalt--coercive force--crystals--magnetic anisotropy--magnetic devices--magnetic domains--magnetic films--metallic films--palladium--resonance--amorphous films--anisotropy--cobalt--coercive force--magnetic anisotropy--magnetism--palladium--amorphous magnetic films--domain structure--experimental research--induced anisotropy--intermediate layers--magnetization process--co-p films--nuclear magnetic resonance(nmr)--nuclear magnetic resonance--nuclear magnetic resonance
Аннотация: The results of experimental research into magnetic properties of amorphous Co-P films obtained by chemical sedimentation on various intermediate layers have been represented. The nuclear magnetic resonance (NMR) spectra of films sedimentated on intermediate layers of Pd crystal and amorphous NiP compound have been measured .The features of formation of domain structures and magnetization processes in the presence and absence of the induced anisotropy have been described.
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Maltsev V. K., Chekanova L. A., Krayukhin I. N., Momot N. A., Barnakov Ch. N.
Заглавие : The structure and the magnetic properties of cobalt nanoparticles in the high-porous amorphous carbon matrix
Коллективы : International Conference on Physics, Chemistry and Application of Nanostructures
Место публикации : Physics, Chemistry and Application of Nanostructures: Proceedings of the International Conference, NANOMEETING 2009. - 2009. - P.268-271. - ISBN 9814280356 (ISBN); 9789814280358 (ISBN)
Ключевые слова (''Своб.индексиров.''): amorphous carbon matrix--co nanoparticles--cobalt nanoparticles--cobalt particles--defective phase--local magnetic anisotropy--magnetic properties of co--nmr spectrum--amorphous carbon--cobalt--magnetic properties--nuclear magnetic resonance spectroscopy--nanoparticles
Аннотация: Structure and magnetic properties of Co nanoparticles in the high-porous amorphous carbon matrix are presented. The average size of cobalt particles is 20 nm. The Co nanoparticles are ferromagnetic and characterized by the local magnetic anisotropy fields Ha = 10 kOe. The material consists of Jcc and hcp Co phases and highly defective phase with high concentration of stacking faults. There are no variations observed in the line shape of the NMR spectrum of Co particles at different temperatures. This implies that there are no polymorphous transfonnations inside Co particles with temperature.
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