Flux pinning and superconducting properties of bulk MgB2 with MgB4 addition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00534554" target="_blank" >RIV/68378271:_____/20:00534554 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0312737" target="_blank" >http://hdl.handle.net/11104/0312737</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adem.201900750" target="_blank" >10.1002/adem.201900750</a>

Result language
angličtina
Original language name
Flux pinning and superconducting properties of bulk MgB2 with MgB4 addition
Original language description
The improved performance of bulk MgB2 material with added nanometer-sized MgB4 particles is presented. Bulk polycrystalline MgB2 samples with varying amount of MgB4x(x ¼ 0, 1, 2, 3, 4, 5, and 10 wt%) are fabricated by solid-state sintering at 775 C for 3 h in pure argon gas. Microstructural studies indicat eformation of nanometer-sized grains when MgB4 is added. Density of nano-grains is inversely proportional to the MgB4 content. The MgB2 sample with 1 wt% of MgB4 shows the best performance, with its self-ﬁeld critical current density reaching 385 and 315 kAcm 2 at 15 and 20 K, respectively. Flux pinning diagrams reveal the domination of grain boundary pinning mechanism.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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