Publication: Superior critical current density obtained in MgB2 bulks through low-cost carbon-encapsulated boron powder
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Barua, Shaon
Al Hossain, Md Shahriar
Ma, Zongqing
Patel, Dipak
Mustapic, Mislav
Acar, Selçuk
Kokal, İlkin
Morawski, Andrzej
Cetner, T.
Gajda, Daniel
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Abstract
The unavailability of high quality precursor is encouraging researchers to seek effective ways to fabricate magnesium diboride (MgB2) wire. Herein, cost-effective amorphous boron powder produced through a diborane (B2H6) gas process is investigated for the possibility of further industrial application. A thin carbon layer to encapsulate the boron particles is simultaneously deposited by pyrolysis of hydrocarbon. We found that the carbon-encapsulated amorphous boron has a high upper critical field due to impurity scattering, and thereby, enhanced high-field critical current density.
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Elsevier
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Scripta Materialia
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DOI
10.1016/j.scriptamat.2015.04.003
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