Unusual fluorination effects on superconducting films

Stanford R. Ovshinsky; Rosa T. Young

doi:10.1117/12.22413

1 December 1990 Unusual fluorination effects on superconducting films

Stanford R. Ovshinsky, Rosa T. Young

Proceedings Volume 1324, Modeling of Optical Thin Films II; (1990) https://doi.org/10.1117/12.22413
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

In this paper we extend our previous fluorination work presenting an unusual fluorination effect in growing device quality superconducting film directly on sapphire. The superiority of the film quality is attributed to the fact that fluorine plays a significant role in the control of nucleation and in the enhancement of the growth rate of the superconducting film in the basal plane, therefore, an "epitaxial" film is obtained. Furthermore, the high quality fluorinated film can be grown at a lower temperature. As a result, the grain boundary weak link effect and the interface diffusion between the superconducting film and the substrate are minimized. The superconducting film with a high critical current density and a very smooth surface is achieved. With our technique, we believe that device quality superconducting film could be grown not only on sapphire but on other flexible inexpensive continuous substrates for high field applications which could lead to a major technological advancement.

Citation Download Citation

Stanford R. Ovshinsky and Rosa T. Young "Unusual fluorination effects on superconducting films", Proc. SPIE 1324, Modeling of Optical Thin Films II, (1 December 1990); https://doi.org/10.1117/12.22413

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