In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 663-665 ( 2010-11), p. 871-875
Abstract:
We present the fabrication and electric properties of MgB2 ceramic samples doped with nanosized spheres, 4-8 nm, of graphite with a metallic core. The samples were prepared using the spark plasma sintering technique. The size of the additive is comparable to the superconducting coherence length. The short processing time limits the diffusion of the carbon while keeping the core intact. Therefore, in addition to the doping with carbon, the metallic core, which has the size smaller than the superconducting coherence length, create pinning centers which might improve the dissipationless electric transport. The results are analyzed in the framework of different pinning models.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.663-665
DOI:
10.4028/www.scientific.net/MSF.663-665.871
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2010
detail.hit.zdb_id:
2047372-2
