Flux pinning mechanisms in graphene-doped MgB2 superconductors

K. S. B. De Silva; X. Xu; S. Gambhir; X. L. Wang; W. X. Li; G. G. Wallace; S. X. Dou

doi:10.1016/j.scriptamat.2011.06.047

Flux pinning mechanisms in graphene-doped MgB2 superconductors

K. S. B. De Silva
, X. Xu
, S. Gambhir
, X. L. Wang
, W. X. Li
, G. G. Wallace
, S. X. Dou

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

The effects of graphene doping on the superconducting properties of MgB2 were studied. We found that small addition of graphene significantly improves the superconducting properties of MgB2, with only a small reduction in Tc. Low resistivity, high critical fields and enhanced flux-flow activation energy were observed for the optimally doped bulk sample. The spatial fluctuation in the transition temperature (Î´Tc pinning) is the flux pinning mechanism in graphene-doped MgB2.

Original language	English
Pages (from-to)	634-637
Number of pages	4
Journal	Scripta Materialia
Volume	65
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2011.06.047
Publication status	Published - 2011

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10.1016/j.scriptamat.2011.06.047

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title = "Flux pinning mechanisms in graphene-doped MgB2 superconductors",

abstract = "The effects of graphene doping on the superconducting properties of MgB2 were studied. We found that small addition of graphene significantly improves the superconducting properties of MgB2, with only a small reduction in Tc. Low resistivity, high critical fields and enhanced flux-flow activation energy were observed for the optimally doped bulk sample. The spatial fluctuation in the transition temperature ({\^I}´Tc pinning) is the flux pinning mechanism in graphene-doped MgB2.",

author = "\{De Silva\}, \{K. S. B.\} and X. Xu and S. Gambhir and Wang, \{X. L.\} and Li, \{W. X.\} and Wallace, \{G. G.\} and Dou, \{S. X.\}",

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AU - De Silva, K. S. B.

AU - Xu, X.

AU - Gambhir, S.

AU - Wang, X. L.

AU - Li, W. X.

AU - Wallace, G. G.

AU - Dou, S. X.

PY - 2011

Y1 - 2011

N2 - The effects of graphene doping on the superconducting properties of MgB2 were studied. We found that small addition of graphene significantly improves the superconducting properties of MgB2, with only a small reduction in Tc. Low resistivity, high critical fields and enhanced flux-flow activation energy were observed for the optimally doped bulk sample. The spatial fluctuation in the transition temperature (Î´Tc pinning) is the flux pinning mechanism in graphene-doped MgB2.

AB - The effects of graphene doping on the superconducting properties of MgB2 were studied. We found that small addition of graphene significantly improves the superconducting properties of MgB2, with only a small reduction in Tc. Low resistivity, high critical fields and enhanced flux-flow activation energy were observed for the optimally doped bulk sample. The spatial fluctuation in the transition temperature (Î´Tc pinning) is the flux pinning mechanism in graphene-doped MgB2.

UR - http://handle.uws.edu.au:8081/1959.7/528662

U2 - 10.1016/j.scriptamat.2011.06.047

DO - 10.1016/j.scriptamat.2011.06.047

M3 - Article

SN - 1359-6462

VL - 65

SP - 634

EP - 637

JO - Scripta Materialia

JF - Scripta Materialia

IS - 7

ER -

Flux pinning mechanisms in graphene-doped MgB2 superconductors

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