Relaxation and pinning in spark-plasma sintered MgB2 superconductor

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00458752" target="_blank" >RIV/68378271:_____/16:00458752 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0953-2048/29/2/025006" target="_blank" >http://dx.doi.org/10.1088/0953-2048/29/2/025006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0953-2048/29/2/025006" target="_blank" >10.1088/0953-2048/29/2/025006</a>

Result language
angličtina
Original language name
Relaxation and pinning in spark-plasma sintered MgB2 superconductor
Original language description
The model of thermally activated relaxation developed and successfully tested on high-T c superconductors (Jirsa et al 2004 Phys. Rev. B 70 0245251) was applied to magnetic data of a bulk spark-plasma sintered MgB2 sample to elucidate its magnetic relaxation behavior. MgB2 and the related borides form a superconductor class lying between classical and high-T c superconductors. In accord with this classification, the relaxation phenomena were found to be about ten times weaker than in cuprates. Vortex pinning analyzed in terms of the field dependence of the pinning force density indicates a combined pinning by normal point-like defects and by grain surfaces. An additional mode of pinning at rather high magnetic fields (of still unknown origin) was observed.n
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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