Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Natalia B. Kolchugina"'
Autor:
Mark V. Zheleznyi, Natalia B. Kolchugina, Vladislav L. Kurichenko, Nikolay A. Dormidontov, Pavel A. Prokofev, Yuriy V. Milov, Aleksandr S. Andreenko, Ivan A. Sipin, Andrey G. Dormidontov, Anna S. Bakulina
Publikováno v:
Crystals, Vol 13, Iss 2, p 177 (2023)
The finite element micromagnetic simulation is used to study the role of complex composition of 2:17R-cell boundaries in the realization of magnetization reversal processes of (Sm, Zr)(Co, Cu, Fe)z alloys intended for high-energy permanent magnets. A
Externí odkaz:
https://doaj.org/article/906acfe874a24e6d9b8fe9f9623aa7dd
Autor:
Andrey G. Dormidontov, Natalia B. Kolchugina, Nikolay A. Dormidontov, Mark V. Zheleznyi, Anna S. Bakulina, Pavel A. Prokofev, Aleksandr S. Andreenko, Yury V. Milov, Nikolay N. Sysoev
Publikováno v:
Materials, Vol 14, Iss 24, p 7762 (2021)
Observations of the surface domain structure (Kerr-effect), optical metallography, scanning electron microscopy (SEM-SE), and electron microprobe analysis (EPMA-SEM), measurements of major and minor magnetic hysteretic loops were used to study pseudo
Externí odkaz:
https://doaj.org/article/3410a4511c0c4b5482549134db4d0e61
Autor:
Andrey G. Dormidontov, Natalia B. Kolchugina, Nikolay A. Dormidontov, Yury V. Milov, Alexander S. Andreenko
Publikováno v:
Materials, Vol 13, Iss 23, p 5426 (2020)
Experimental series of alloys for (Sm,Zr)(Co,Cu,Fe)Z permanent magnets are presented in the concentration ranges that provide wide variations of (4f)/(4d)/(3d) ratios of comprising elements. Optical metallographic analysis, observation of the surface
Externí odkaz:
https://doaj.org/article/0abd054c0691424b8e4aa8adeb0400a0
Publikováno v:
Materials, Vol 13, Iss 17, p 3893 (2020)
An original vision for the structural formation of (Sm,Zr)(Co,Cu,Fe)Z alloys, the compositions of which show promise for manufacturing high-coercivity permanent magnets, is reported. Foundations arising from the quantitative analysis of alloy microst
Externí odkaz:
https://doaj.org/article/e119fd0f9f504d4288ed1fb2899fb1cc
Autor:
Pavel A. Prokofev, Natalia B. Kolchugina, Katerina Skotnicova, Gennady S. Burkhanov, Miroslav Kursa, Mark V. Zheleznyi, Nikolay A. Dormidontov, Tomas Cegan, Anna S. Bakulina, Yurii S. Koshkidko, Bedřich Smetana
Publikováno v:
Materials, Vol 13, Iss 14, p 3049 (2020)
The wide application of Nd-Fe-B permanent magnets, in addition to rare-earth metal resource constraints, creates the necessity of the development of efficient technologies for recycling sintered Nd-Fe-B permanent magnets. In the present study, a magn
Externí odkaz:
https://doaj.org/article/02550a6eeb8c44deb1bbcf347a929088
Autor:
Natalia B. Kolchugina, Mark V. Zheleznyi, Aleksandr G. Savchenko, Vladimir P. Menushenkov, Gennadii S. Burkhanov, Yurii S. Koshkid’ko, Jacek Ćwik, Nikolai A. Dormidontov, Katerina Skotnicova, Miroslav Kursa, Pavel A. Prokofev
Publikováno v:
Crystals, Vol 10, Iss 6, p 518 (2020)
The Ce2Fe14B intermetallic, like Nd2Fe14B, has the tetragonal Nd2Fe14B-type structure (space group P42/mnm), in which Ce ions have a mixed-valence state characterized by the coexistence of trivalent 4f1 and tetravalent 4f0 electron states. Despite th
Externí odkaz:
https://doaj.org/article/8674aae189b14006bc3b8a4e0998ff1e
Publikováno v:
Inorganic Materials: Applied Research. 12:491-498
Processes of the formation of the high-coercivity state of the Sm0.85Zr0.15(C00.702Cu0.088Fe0.210)z alloys with different indices z = 6.0, 6.5, and 6.8, which characterize the (4f-,4d-)-to-(3d-) element ratio, are studied. Correlations between the ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c96a52902964d6163386538e59bc114
https://doi.org/10.1134/s2075113321020118
https://doi.org/10.1134/s2075113321020118
Autor:
S. V. Gorbunov, N. R. Roshan, Nikolay A. Dormidontov, A. S. Bakulina, D. A. Rusinov, T. P. Kaminskaya, G. S. Burkhanov, Natalia B. Kolchugina
Publikováno v:
Physics of Metals and Metallography. 122:54-59
The purity of hydrogen, which is an alternative energy carrier in powder sources of distributed energy resource systems and, in particular, is the feed stock for fuel cells, should be no less than 99.9999 vol % purity High-purity hydrogen can be prep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39fd6a8d5ce34e15d8496919f2549ae2
https://doi.org/10.1134/s0031918x21010075
https://doi.org/10.1134/s0031918x21010075
Autor:
T. P. Kaminskaya, Pavel A. Prokofev, B. A. Ginzburg, A. A. Lukin, Kateřina Skotnicová, A. S. Bakulina, M. V. Zelezhnyi, Miroslav Kursa, Tomáš Čegan, Nikolay A. Dormidontov, G. S. Burkhanov, Natalia B. Kolchugina
Publikováno v:
Physics of Metals and Metallography. 121:772-782
X-ray diffraction analysis, scanning electron microscopy, and atomic force microscopy are used to study the phase composition, texture, and peculiarities of the morphology of R–Fe–B (R = Nd, Pr, Dy) alloys prepared by strip-casting technology. Al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44d6e3e5ce1b2aec09860e84877f5aca
https://doi.org/10.1134/s0031918x20080049
https://doi.org/10.1134/s0031918x20080049
Autor:
Natalia B. Kolchugina, N. Oliveira, Yurii S. Koshkid’ko, Małgorzata A. Małecka, Tetiana Romanova, Konstantin Nenkov, Alexandra Mikhailova, Jacek Cwik
Publikováno v:
Physical Review B. 103
In the present work, the structural, magnetic, and thermodynamic properties of ${\mathrm{Dy}}_{1\ensuremath{-}x}{\mathrm{Er}}_{x}{\mathrm{Ni}}_{2}$ $(x=0.25,\phantom{\rule{0.16em}{0ex}}0.5,\phantom{\rule{0.16em}{0ex}}0.75)$ Laves-phase intermetallics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d2ad14d596577420413b13a16452e9b
https://doi.org/10.1103/physrevb.103.214429
https://doi.org/10.1103/physrevb.103.214429