Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2409
Title: Co-addition of nano-carbon and nano-silica: An effective method for improving the in-field properties of magnesium diboride superconductor
Authors: Thomas, Syju
Rahul, S.
Devadas, K. M.
Varghese, Neson
Sundaresan, A.
Syamaprasad, U.
Keywords: Materials Science
Superconductors
Sintering
Electron Microscopy
Superconductivity
Critical-Current Density
Sic-Doped Mgb2
Substitution
Enhancement
Bulks
Issue Date: 2014
Publisher: Elsevier Science Sa
Citation: Thomas, S; Rahul, S; Devadas, KM; Varghese, N; Sundaresan, A; Syamaprasad, U, Co-addition of nano-carbon and nano-silica: An effective method for improving the in-field properties of magnesium diboride superconductor. Materials Chemistry And Physics 2014, 148 (01-Feb) 190-194, http://dx.doi.org/10.1016/j.matchemphys.2014.07.030
Materials Chemistry And Physics
148
01-Feb
Abstract: MgB2 superconductor sample co-doped with nano-carbon (n-C) and nano-silica (n-SiO2) is prepared and its structural and superconducting properties are compared with pure and n-C and nano SiC (n-SiC) mono-doped samples. Shrinkage of a-lattice parameter is observed for all doped samples, among which the co-doped sample exhibits the maximum shrinkage, an evidence of effective carbon substitution at boron sites. All doped samples show significantly enhanced in-field critical current density J(C)(H), where the co-doped sample dominates others throughout the whole range of field studied. Lattice strains induced by carbon substitution and flux pinning caused by uniformly distributed nano sized Mg2Si particles formed by the reaction between Mg and n-SiO2, are the main reasons for the highly enhanced J(C)(H) behavior of the co-doped superconductor. (C) 2014 Elsevier B.V. All rights reserved.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2409
ISSN: 0254-0584
Appears in Collections:Research Articles (Sundaresan A.)

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