Description: A potentially important application of high-temperature superconductors will be high-frequency accelerating cavities. Currently these materials are not competitive with Nb at liquid helium temperature or with Cu at room temperature. However, available data on high-quality single crystals suggest that the relatively poor rf properties (high surface resistance and low surface magnetic field) of bulk and film specimens are due to materials properties that can be eliminated by improved processing techniques. Recent progress in the fabrication of thin films, for example, demonstrates that this is indeed the case. 27 refs., 10 figs., 1 tab.
Date: January 1, 1989
Creator: Cooke, D.W. & Gray, E.R.
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