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Preparation of Optically Smooth Surfaces of High TcSuperconducting Films

  • J. H. kim (a1), A. Kapitulnik (a1), J. S. Harris (a1), K. Char (a2), I. Bozovic (a3) and W. Y. Lee (a4)...

Abstract

We report optical studies of predominantly c-axis oriented high-Tc superconducting films before and after ion milling. A significant increase in midinfrared reflectivity resulted from ion milling of a few thousand Å Features associated with α-axis texture vanished after ion milling, resulting in pure c-axis films. This suggests that α-axis grains reside mostly near the surface in post-annealed high-Tc superconducting films. Therefore, even after annealing (for the purpose of raising Tc ), highly oriented c-axis films can be retained by ion milling. This may be important for device applications where optically smooth surfaces and interfaces are to be routinely prepared.

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Preparation of Optically Smooth Surfaces of High TcSuperconducting Films

  • J. H. kim (a1), A. Kapitulnik (a1), J. S. Harris (a1), K. Char (a2), I. Bozovic (a3) and W. Y. Lee (a4)...

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