Optimization of carbon encapsulated boron doping for high-performance bulk sintered MgB.sub.2./sub.

0536254 - FZÚ 2021 RIV DE eng J - Journal Article
Srikanth, A.S. - Muralidhar, M. - Sunsanee, P. - Jirsa, Miloš - Sakai, N. - Oka, T. - Murakami, M.
Optimization of carbon encapsulated boron doping for high-performance bulk sintered MgB₂.
Advanced Engineering Materials. Roč. 22, č. 11 (2020), s. 1-7, č. článku 2000478. ISSN 1438-1656. E-ISSN 1527-2648
Institutional support: RVO:68378271
Keywords : bulk MgB₂ * carbon encapsulated boron * optimization * sintering
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.862, year: 2020
Method of publishing: Open access

Carbon has been a standard doping agent in MgB2 for long time. It, however, has also participated in a non-uniform distribution of the constituents throughout the bulk MgB2. To address this issue, carbon encapsulated boron (CEB) was used instead of the manually added mixture of boron and carbo n. The previous studies conrmed that only low concentrations of carbon in CEB were effective for synthesis of a high-performance bulk MgB2. Here, a further step in optimization carbon content in CEB is reported. Carbon content in CEB varied as 1, 1.1, 1.35, 1.5, and 1.9 wt%. X-ray diffraction (XRD) results depict a slight shift in peaks corresponding to a–b plane, indicating carbon substitution into the lattice.
Permanent Link: http://hdl.handle.net/11104/0314066