Effect of lattice strain and defects on the superconductivity of MgB2

Abstract

The influence of lattice strain and Mg vacancies on the superconducting properties of MgB2 samples has been investigated. High quality samples with sharp superconducting transitions were synthesized. The variation in lattice strain and Mg vacancy concentrations were obtained by varying the synthesis conditions. It was found that high strain (~1%) and the presence of Mg vacancies (~ 5 %) resulted in lowering the Tc by only 2 K.

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References in corpus (3)

• Superconductivity of MgB2: Covalent Bonds Driven Metallic
• Large transport critical currents in dense Fe- and Ni-clad MgB2 superconducting tapes
• Microstructure and Structural Defects in MgB2 Superconductor

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