Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Svetlana G. Protasova"'
Autor:
Boris B. Straumal, Svetlana G. Protasova, Andrei A. Mazilkin, Eberhard Goering, Gisela Schütz, Petr B. Straumal, Brigitte Baretzky
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 7, Iss 1, Pp 1936-1947 (2016)
The possibility to attain ferromagnetic properties in transparent semiconductor oxides such as ZnO is very promising for future spintronic applications. We demonstrate in this review that ferromagnetism is not an intrinsic property of the ZnO crystal
Externí odkaz:
https://doaj.org/article/437358d4cd2b42adbd207d7724be744c
Autor:
Boris B. Straumal, Svetlana G. Protasova, Andrei A. Mazilkin, Thomas Tietze, Eberhard Goering, Gisela Schütz, Petr B. Straumal, Brigitte Baretzky
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 4, Iss 1, Pp 361-369 (2013)
The influence of the grain boundary (GB) specific area sGB on the appearance of ferromagnetism in Fe-doped ZnO has been analysed. A review of numerous research contributions from the literature on the origin of the ferromagnetic behaviour of Fe-doped
Externí odkaz:
https://doaj.org/article/c2824c1f35b04d4983c90228c4018b86
Autor:
Boris B. Straumal, Dagmar Goll, Brigitte Baretzky, A. S. Bakai, Svetlana G. Protasova, Sergey V. Dobatkin, Andrei A. Mazilkin
Publikováno v:
Metallic Materials. 49:17-22
It has been demonstrated for the first time that severe plastic deformation (SPD) permits to produce the metallic alloys containing two coexisting amorphous phases from the crystalline multiphase alloy. The as-cast Ni60Nb18Y22 alloy was coarse-graine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3580f7eb28b6d366744b5f21f373b9f
https://doi.org/10.4149/km_2011_1_17
https://doi.org/10.4149/km_2011_1_17
Autor:
Boris B. Straumal, Svetlana G. Protasova, A. V. Druzhinin, Andrey Mazilkin, Brigitte Baretzky, Askar Kilmametov
Publikováno v:
JETP Letters. 112:37-44
In this work, we studied the behavior of the Nd–Dy–Fe–Co–Cu–B alloy for permanent magnets under high pressure torsion (HPT). In the initial state of the studied alloy, it mainly contained the crystalline phase τ1 (Nd, Dy)2(Fe, Co, Cu) 14B.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7d3abe35d4f5e0dbd4e838bf2e82c78
https://doi.org/10.1134/s0021364020130020
https://doi.org/10.1134/s0021364020130020
Publikováno v:
Electrochemistry Communications, Vol 96, Iss, Pp 57-60 (2018)
A glassy carbon (GC) electrode has been modified by 3–6 potential impulses of different polarity with amplitude up to 250 V, duration of 10 ms and pulse rise-time of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de54a4822cb469ef72fdda4a7ee86238
https://doi.org/10.1016/j.elecom.2018.09.012
https://doi.org/10.1016/j.elecom.2018.09.012
Autor:
Vladimir I. Bregadze, Lev I. Buravov, Denis M. Chudak, Irina D. Kosenko, Grigorii G. Alexandrov, Vladimir A. Starodub, Oleg A. Dyachenko, Svetlana G. Protasova, Irina A. Lobanova, Andrey V. Kravchenko, Olga N. Kazheva
Publikováno v:
Journal of Organometallic Chemistry. :261-267
New radical-cation salts based on bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF or ET) were synthesized: (ЕТ)2[8,8′-Br2-3,3′-Fe(1,2-C2B9H10)2] (1) and (ЕТ)[8,8′-I2-3,3′-Fe(1,2-C2B9H10)2] (2). Their crystal structures were studied by X-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5b58d5d9d8f2989011c9523ceb89042
https://doi.org/10.1016/j.jorganchem.2017.03.010
https://doi.org/10.1016/j.jorganchem.2017.03.010
Publikováno v:
Defect and Diffusion Forum. 380:173-180
The microstructure of Nd–Fe–B-based liquid-phase sintered alloy has been studied. The Nd2Fe14B/Nd2Fe14B GBs can be pseudo-incompletely (or pseudo-partially) wetted by the Nd-rich melt. Such GBs form the non-zero contact angle with the melt in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6627f88c850e82fe8a8c2a83637f1afc
https://doi.org/10.4028/www.scientific.net/ddf.380.173
https://doi.org/10.4028/www.scientific.net/ddf.380.173
Autor:
Boris B. Straumal, Brigitte Baretzky, Alexander B. Straumal, Andrei A. Mazilkin, Svetlana G. Protasova, Gisela Schütz
Publikováno v:
Journal of Materials Engineering and Performance. 25:3303-3309
The NdFeB-based alloys were invented in 1980s and remain the best-known hard magnetic alloys. In order to reach the optimum magnetic properties, the grains of hard magnetic Nd2Fe14B phase have to be isolated from one another by the (possibly thin) la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcc81c73d7c694db894d2298f91fef9f
https://doi.org/10.1007/s11665-015-1872-8
https://doi.org/10.1007/s11665-015-1872-8
Autor:
Svetlana G. Protasova, Gabriel A. López, Brigitte Baretzky, D.V. Gunderov, Boris B. Straumal, Andrei A. Mazilkin
Publikováno v:
Materials Letters. 161:735-739
High pressure torsion (HPT) has been used for the severe plastic deformation (SPD) treatment of molten Fe–12.3 at% Nd–7.6 at% B alloy (5 GPa, 1 rpm, 5 rot, room temperature). After HPT the microstructure contained the nanograins of the ferromagne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f345093f69ea8a0bebf4ae447e12f95b
https://doi.org/10.1016/j.matlet.2015.09.076
https://doi.org/10.1016/j.matlet.2015.09.076
Publikováno v:
Materials Letters. 192:101-103
The excellent properties of heavy tungsten-based alloys are based on the combination of hardness of W grains, as well on the toughness and ductility of the binder with low melting temperature (usually containing nickel, iron, or copper). The topology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cbd97c8f4814bb03e9d21aace6f0a1f
https://doi.org/10.1016/j.matlet.2016.12.049
https://doi.org/10.1016/j.matlet.2016.12.049