Title

Flux pinning mechanisms in graphene-doped MgB2 superconductors

RIS ID

38096

Publication Details

De Silva, K. S. B., Xu, X., Gambhir, S., Wang, X., Li, W. X., Wallace, G. G. & Dou, S. Xue. (2011). Flux pinning mechanisms in graphene-doped MgB2 superconductors. Scripta Materialia, 65 (7), 634-637.

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 (δTc pinning) is the flux pinning mechanism in graphene-doped MgB2.

Grant Number

ARC/DP0770205, ARC/FF0669110

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