Superior critical current density obtained in MgB2 bulks through low-cost carbon-encapsulated boron powder

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 applicati...

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Published inScripta materialia Vol. 104; pp. 37 - 40
Main Authors Barua, Shaon, Hossain, Md Shahriar Al, Ma, Zongqing, Patel, Dipak, Mustapic, Mislav, Somer, Mehmet, Acar, Selcuk, Kokal, Ilkin, Morawski, Andrzej, Cetner, T., Gajda, Daniel, Dou, Shi Xue
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.07.2015
Subjects
Borides
Boron
Carbon
Carbon-encapsulated boron
Critical current density
Deposition
Impurity scattering
Magnesium
Magnesium compounds
MgB2
Pyrolysis
Critical current density
Carbon-encapsulated boron
MgB2
Impurity scattering
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Summary: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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ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2015.04.003