Flux pinning and microstructure of a bulk MgB2 doped with diverse additives

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00533111" target="_blank" >RIV/68378271:_____/20:00533111 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0311595" target="_blank" >http://hdl.handle.net/11104/0311595</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6668/aba01c" target="_blank" >10.1088/1361-6668/aba01c</a>

Result language
angličtina
Original language name
Flux pinning and microstructure of a bulk MgB2 doped with diverse additives
Original language description
In MgB2 doped with Ag, the Ag reacts with Mg, forming Mg–Ag phases acting as a vortex pinning medium. In this work, we analyzed the electromagnetic and pinning properties of bulk MgB2 doped with 1 wt% MgB4, 4 wt% Ag, and 1 wt% Dy2O3. In three compounds of MgxB2 + 4 wt% Ag with x = 1, 1.075, and 1.1, the effect of Mg excess was studied. The magnetic moment was measured by a vibrating sample magnetometer. Pinning was studied in terms of the field dependence of the normalized pinning force density, Fn = F/Fmax. In all studied samples, the peak of the Fn(b) dependence (b = B/Birr, Birr being the irreversibility field) was observed at around b = 0.2, indicating a prevailing flux pinning at grain boundaries.
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
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/LM2018096" target="_blank" >LM2018096: Materials Growth and Measurement Laboratory</a><br>
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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