High critical current densities in superconducting MgB2 thin films

S. H. Moon; J. H. Yun; H. N. Lee; J. I. Kye; H. G. Kim; W. Chung; B. Oh

doi:10.1063/1.1407854

High critical current densities in superconducting MgB2 thin films

Superconductivity 2009-11-07 v1

Authors: S. H. Moon , J. H. Yun , H. N. Lee , J. I. Kye , H. G. Kim , W. Chung , B. Oh

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Abstract

Superconducting MgB2 thin films were prepared on Al2O3(0001) and MgO(100) substrates. Boron thin films were deposited by the electron-beam evaporation followed by post-annealing process with magnesium. Proper post annealing conditions were investigated to grow good superconducting MgB2 thin films. The X-ray diffraction patterns showed randomly orientated growth of MgB2 phase in our thin films. The surface morphology was examined by scanning electron microscope (SEM) and atomic force microscope (AFM). Critical current density (Jc) measured by transport method was about 10^7 A/cm^2 at 15 K, and superconducting transition temperature (Tc) was ~ 39 K in the MgB2 thin films on Al2O3.

Keywords

MgB2 thin films critical current density superconducting transition temperature electron-beam evaporation post-annealing

Cite

@article{arxiv.cond-mat/0104230,
  title  = {High critical current densities in superconducting MgB2 thin films},
  author = {S. H. Moon and J. H. Yun and H. N. Lee and J. I. Kye and H. G. Kim and W. Chung and B. Oh},
  journal= {arXiv preprint arXiv:cond-mat/0104230},
  year   = {2009}
}

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13 pages, 4 figures, submitted on Apr. 4, 2001, only one pdf file

High critical current densities in superconducting MgB2 thin films

Abstract

Keywords

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