Superconducting Properties of Sputtered Mo-C Films with Columnar Microstructure
It has been evident for some time that a fine microstructure on the order of the superconducting coherence length (typically of order 100Å in relevant materials) is useful in optimizing critical currents and fields in technological superconductors. In the present paper, we discuss the superconducting properties of sputtered Mo-C films having nonequilibrium columnar microstructure on this scale. Some of the samples exhibit behavior in large critical fields that compares very favorably with commercial superconducting wire. We also present some preliminary data on multilayered films based on Mo-C, which also exhibit outstanding high-field behavior.
KeywordsCritical Temperature Critical Field Columnar Growth Parallel Magnetic Field Columnar Microstructure
Unable to display preview. Download preview PDF.
- 3.W. Krauss and C. Politis, in Superconductivity in d- and f-band metals 1982. ed. by W. Buckel and W. Weber, Kernforschungszentrum Karlsruhe 1982, p. 439.Google Scholar
- 4.E.K. Storms, The Refractory Carbides, Chapter VIII, Academic Press (1967).Google Scholar
- 9.Trademark for Dupont Polyimide film.Google Scholar
- 13.M. Ikeba, Y. Muto, S. Ikeda, H. Fujimori and K. Suzuki, Physica 107B, 387 (1981).Google Scholar
- 16.H. Sadate-Akhavi, J.T. Chen, F.P. Missell and J.E. Keem, Bull. Am. Phys. Soc. 27, 381 (1982), and additional unpublished data.Google Scholar