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IOP Publishing, Superconductor Science and Technology, 5(17), p. S341-S344

DOI: 10.1088/0953-2048/17/5/050

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Characterization of suitable buffer layers on CU and CU-alloy metal substrates for the development of coated conductors

Journal article published in 2004 by C. Cantoni, D. K. Christen, E. D. Specht, M. Varela ORCID, J. R. Thompson, A. Goyal, C. Thieme, Y. Xu, S. J. Pennycook
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A novel buffer layer architecture consisting of LaMnO3/MgO/TiN is proposed as a suitable structural and chemical template for the epitaxial growth of high-T-c superconductors on Cu metal surfaces. For the first time, high J(c) values are reported for YBCO films grown by laser ablation on (001) Cu single crystals, {100}<100> textured Cu surfaces and {100}<100> textured Cu-48% Ni-1% Al alloys, without intervening metal coatings. The J(c) for single-crystal-like substrates is as high as 3.5 MA cm(-2) and values of 2 MA cm(-2) were obtained on the Cu-alloy tape substrates.