Enhancement of optical reflectivity of high Tc superconducting films by ion milling

J. H. Kim, K. Char, I. Bozovic, W. Y. Lee, A. Kapitulnik, J. S. Harris

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Abstract

We report optical reflectivity data of several representative high T c superconducting films before and after ion milling. A significant enhancement of optical reflectivity after ion milling of a few thousand Å is observed. We observed that features associated with a-axis texture vanished after ion milling, resulting in pure c-axis films. This suggests that a-axis grains reside mostly near the surface in post-annealed high Tc superconducting films. The fact that highly oriented c-axis films can be retained even after post-annealing (for raising Tc) may be important for practical applications.

Original languageEnglish
Pages (from-to)2558-2560
Number of pages3
JournalApplied Physics Letters
Volume58
Issue number22
DOIs
Publication statusPublished - 1991

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Kim, J. H., Char, K., Bozovic, I., Lee, W. Y., Kapitulnik, A., & Harris, J. S. (1991). Enhancement of optical reflectivity of high Tc superconducting films by ion milling. Applied Physics Letters, 58(22), 2558-2560. https://doi.org/10.1063/1.104825