Superconducting properties of sintered bulk MgB2 prepared from hexane-mediated high-energy-ultra-sonicated boron
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00541847" target="_blank" >RIV/68378271:_____/21:00541847 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.mseb.2020.115030" target="_blank" >https://doi.org/10.1016/j.mseb.2020.115030</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mseb.2020.115030" target="_blank" >10.1016/j.mseb.2020.115030</a>
Alternative languages
Result language
angličtina
Original language name
Superconducting properties of sintered bulk MgB2 prepared from hexane-mediated high-energy-ultra-sonicated boron
Original language description
Recently, novel low cost techniques have been employed to improve critical current density of MgB2. Ultra-sonication is one such technique. We report on the influence of hexane dispersant on particle size of ultra-sonicated cheap commercial boron and the superconducting properties of MgB2 bulks prepared using this new precursor. XRD showed major peaks corresponding to MgB2, with small fractions of MgO and unreacted Mg. Tc was close to 39 K, with a sharp transition. The highest Jc was found in the sample with boron ultra-sonicated for 30 min as high as 375, 328, and 270 kA/cm2 at 10, 15, and 20 K, respectively. SEM analysis revealed tiny particles and layers randomly dispersed in the microstructure, while EDX indicated that these particles were secondary phases of Mg, B, and O. Flux pinning diagrams showed the peak of normalized pinning force located close to b = 0.2, depicting dominance of grain boundary pinning mechanism.
Czech name
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Czech description
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Classification
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.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Science and Engineering B-Advanced Functional Solid-State Materials
ISSN
0921-5107
e-ISSN
1873-4944
Volume of the periodical
265
Issue of the periodical within the volume
Mar
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
115030
UT code for WoS article
000615944000004
EID of the result in the Scopus database
2-s2.0-85098848515