S
S. I. Popkov
Researcher at Russian Academy of Sciences
Publications - 89
Citations - 854
S. I. Popkov is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Superconductivity & Magnetization. The author has an hindex of 16, co-authored 88 publications receiving 723 citations. Previous affiliations of S. I. Popkov include Siberian Federal University & Krasnoyarsk State University.
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Journal ArticleDOI
Magnetic properties of heat treated bacterial ferrihydrite nanoparticles
D. A. Balaev,D. A. Balaev,A. A. Krasikov,A. A. Krasikov,A. A. Dubrovskiy,S. I. Popkov,S. I. Popkov,S. V. Stolyar,S. V. Stolyar,Oleg A. Bayukov,Rauf S. Iskhakov,V. P. Ladygina,R. N. Yaroslavtsev +12 more
TL;DR: The magnetic properties of ferrihydrite nanoparticles, which are products of vital functions of Klebsiella oxitoca bacteria, have been studied in this article, where the initial powder containing the nanoparticles in an organic shell was subjected to low-temperature heat treatment for up to 240h.
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Dynamic magnetization of e-Fe2O3 in pulse field: Evidence of surface effect
D. A. Balaev,D. A. Balaev,I. S. Poperechny,I. S. Poperechny,A. A. Krasikov,K. A. Shaikhutdinov,A. A. Dubrovskiy,S. I. Popkov,A. D. Balaev,S. S. Yakushkin,Galina A. Bukhtiyarova,Oleg N. Martyanov,Yu. L. Raikher,Yu. L. Raikher +13 more
TL;DR: In this paper, the magnetization dynamics of e-Fe2O3 nanoparticles with an average size of about 9nm was investigated and it was shown that the effective coercivity increases considerably with the variation rate of the imposed magnetic field.
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Magnetization asymmetry of type-II superconductors in high magnetic fields
TL;DR: In this paper, a model considering the field distribution in superconductor was developed and symmetric and asymmetric magnetization loops of porous and textured Bi1.8Pb0.3Sr1.9Ca2Cu3Ox were fitted.
Journal ArticleDOI
Magnetization asymmetry of type-II superconductors in high magnetic fields
TL;DR: In this article, a model considering the field distribution in superconductor was developed and symmetric and asymmetric magnetization loops of porous and textured Bi{1.8}Pb_{0.3}Sr_{1.9}Ca_{2}Cu_{3}O_{x} were fitted.
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Mechanism of the hysteretic behavior of the magnetoresistance of granular HTSCs: The universal nature of the width of the magnetoresistance hysteresis loop
D. A. Balaev,A. A. Dubrovskiĭ,K. A. Shaikhutdinov,S. I. Popkov,Denis Gokhfeld,Yu. S. Gokhfeld,M. I. Petrov +6 more
TL;DR: In this paper, the authors investigated the hysteretic behavior of granular high-temperature superconductors (HTSCs) for transport current densities lower and higher than the critical density (at H = 0).