Effective Vortex Pinning in MgB2 thin films

Y. Bugoslavsky; L. Cowey; T. J. Tate; G. K. Perkins; J. Moore; Z. Lockman; A. Berenov; J. L. MacManus-Driscoll; A. D. Caplin; L. F. Cohen; H Y Zhai; H M Christen; M P Paranthaman; D H Lowndes; M H Jo; M G Blamire

doi:10.1088/0953-2048/15/10/305

Effective Vortex Pinning in MgB2 thin films

Superconductivity 2009-11-07 v1 Materials Science

Authors: Y. Bugoslavsky , L. Cowey , T. J. Tate , G. K. Perkins , J. Moore , Z. Lockman , A. Berenov , J. L. MacManus-Driscoll , A. D. Caplin , L. F. Cohen , H Y Zhai , H M Christen , M P Paranthaman , D H Lowndes , M H Jo , M G Blamire

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Abstract

We discuss pinning properties of MgB2 thin films grown by pulsed-laser deposition (PLD) and by electron-beam (EB) evaporation. Two mechanisms are identified that contribute most effectively to the pinning of vortices in randomly oriented films. The EB process produces low defected crystallites with small grain size providing enhanced pinning at grain boundaries without degradation of Tc. The PLD process produces films with structural disorder on a scale less that the coherence length that further improves pinning, but also depresses Tc.

Keywords

thin film physics thin films materials science

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@article{arxiv.cond-mat/0207080,
  title  = {Effective Vortex Pinning in MgB2 thin films},
  author = {Y. Bugoslavsky and L. Cowey and T. J. Tate and G. K. Perkins and J. Moore and Z. Lockman and A. Berenov and J. L. MacManus-Driscoll and A. D. Caplin and L. F. Cohen and H Y Zhai and H M Christen and M P Paranthaman and D H Lowndes and M H Jo and M G Blamire},
  journal= {arXiv preprint arXiv:cond-mat/0207080},
  year   = {2009}
}

Effective Vortex Pinning in MgB2 thin films

Abstract

Keywords

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