Flux pinning mechanisms in graphene-doped MGB2 superconductors
- Publication Type:
- Journal Article
- Scripta Materialia, 2011, 65 (7), pp. 634 - 637
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The effects of graphene doping on the superconducting properties of MgB2were 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 (dTc pinning) is the flux pinning mechanism in graphene-doped MgB2. © 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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