Nanostructured compact bulk MgB2 cryo-magnets with record-high critical currents and trapped magnetic fields
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640163" target="_blank" >RIV/68378271:_____/25:00640163 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0370592" target="_blank" >https://hdl.handle.net/11104/0370592</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-025-97195-w" target="_blank" >10.1038/s41598-025-97195-w</a>
Alternative languages
Result language
angličtina
Original language name
Nanostructured compact bulk MgB2 cryo-magnets with record-high critical currents and trapped magnetic fields
Original language description
We report a significant breakthrough in enhancing the performance of MgB₂ superconductors by engineering novel nanoscale defects using spark plasma sintering (SPS). By incorporating nanoscale MgB2O particles via silver addition, carbon doping, and magnesium excess, we introduce a transformative approach to defect design. This innovation yields exceptional material performance, characterized by a self-field critical current density (Jc) of 1.2 MA/cm2 at 10 K, a single peak in the normalized pinning force density diagram [f(b) = F/Fmax(B/Birr)] at b = 0.3, and the exceptional trapped field values of 4.21 T at 11 K (for a 20 mm diameter and 5.5 mm thick single MgB2 bulk), and 5 T at 15 K and 6 T at 10 K of a triple-stacked compact bulk MgB2 cryo-magnet. These remarkable advancements highlight a novel paradigm in nanoscale defect engineering, with far-reaching implications for superconductors, nanomaterials, and advanced energy systems.
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scientific Reports
ISSN
2045-2322
e-ISSN
2045-2322
Volume of the periodical
15
Issue of the periodical within the volume
Oct
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
36308
UT code for WoS article
001597098000018
EID of the result in the Scopus database
2-s2.0-105019114296