R
Roman Kuznietsov
Researcher at National Academy of Sciences of Ukraine
Publications - 5
Citations - 66
Roman Kuznietsov is an academic researcher from National Academy of Sciences of Ukraine. The author has contributed to research in topics: Pinning force & Grain boundary. The author has an hindex of 4, co-authored 5 publications receiving 58 citations.
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Journal ArticleDOI
Synthesis Pressure–Temperature Effect on Pinning in MgB2-Based Superconductors
Tetiana Prikhna,Michael Eisterer,Wolfgang Gawalek,Artem Kozyrev,H. W. Weber,Vladimir Sokolovsky,Xavier Chaud,Jacques G. Noudem,Tobias Habisreuther,Viktor Moshchil,Myroslav Karpets,Tetyana Basyuk,Valeriy Kovylaev,Jan Dellith,V. B. Sverdun,Roman Kuznietsov,Christa Shmidt,T. Vitovetskaya,L. O. Polikarpova +18 more
TL;DR: In this paper, the volume pinning force increases with increasing synthesis or sintering pressure (0.1 MPa-2 GPa), while it stays practically unchanged in those prepared at low temperature (800-°C).
Journal ArticleDOI
The effect of high-pressure synthesis on flux pinning in MgB2-based superconductors
Tatiana Prikhna,Wolfgang Gawalek,Michael Eisterer,Harald W. Weber,Mykola Monastyrov,Mykola Monastyrov,Vladimir Sokolovsky,Jacques G. Noudem,Viktor Moshchil,Myroslav Karpets,Valeriy Kovylaev,Alexandr Borimskiy,V. N. Tkach,Artem Kozyrev,Roman Kuznietsov,Jan Dellith,Christa Shmidt,Doris Litzkendorf,F. Karau,U. Dittrich,Michael Tomsic +20 more
TL;DR: In this article, the authors attributed the observed changes to Mg-B-O oxygen-enriched regions and grains of higher magnesium borides in the MgB2 matrix.
Journal ArticleDOI
Spark plasma synthesis and sintering of superconducting MgB 2-based Materials
Tatiana Prikhna,Jacques G. Noudem,Wolfgang Gawalek,Athanasios G. Mamalis,Alexander Soldatov,Yaroslav Savchuk,Viktor Moshchil,Michael Eisterer,Harald W. Weber,Sergey Dub,Tobias Habisreuther,Jan Dellith,Shujie You,Christa Schmidt,F. Karau,U. Dittrich,István Vajda,Nina Sergienko,Vladimir Sokolovsky,Doris Litzkendorf,Xavier Chaud,Vladimir Sverdun,Roman Kuznietsov +22 more
TL;DR: In this paper, superconducting (SC) and mechanical properties of spark plasma (or SPS) produced MgB 2 -based materials allow their efficient applications in fault current limiters.
Journal ArticleDOI
Pinning in $\hbox{MgB}_{2}$ - and YBaCuO-Based Superconductors: Effect of Manufacturing Pressure and Temperature
Tetiana Prikhna,Michael Eisterer,H. W. Weber,Wolfgang Gawalek,Xavier Chaud,Vladimir Sokolovsky,Viktor Moshchil,Artem Kozyrev,V. B. Sverdun,Roman Kuznietsov,Tobias Habisreuther,Myroslav Karpets,Valeriy Kovylaev,Jacques G. Noudem,Jacques Rabier,A. Joulain,Wilfried Goldacker,Tetyana Basyuk,V. N. Tkach,Jan Dellith,Ch. Schmidt,A. V. Shaternik +21 more
TL;DR: In this paper, the transformation of grain boundary pinning to point pinning in MgB2-based materials with increasing manufacturing temperature from 800 to 1050°C under pressures from 0.1 MPa to 2 GPa correlates well with an increase in critical current density in low and intermediate magnetic fields and with the redistribution of boron and oxygen in the material structure.
Journal ArticleDOI
Superconductivity in Multi-Phase Mg-B-O Compounds
Tatiana Prikhna,Wolfgang Gawalek,Michael Eisterer,Harald W. Weber,Jacques G. Noudem,Vladimir Sokolovsky,Xavier Chaud,Viktor Moshchil,Myroslav Karpets,Valeriy Kovylaev,Alexandr Borimskiy,V. N. Tkach,Artem Kozyrev,Roman Kuznietsov,Jan Dellith,Christa Shmidt,Tetiana Basyuk,Doris Litzkendorf,F. Karau,U. Dittrich,Michael Tomsic +20 more
TL;DR: In this article, the formation, amount and sizes of Mg-B-O and MgBx inclusions and changing type of pinning, pinning force and so affect critical current density j c.