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Proceedings Paper

In-situ laser deposition of superconducting thin films on metallic substrate
Author(s): Young Sik Jeong; Joo Hyung Park; Sang Yeol Lee
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Paper Abstract

C-axis oriented superconducting YBCO thin films on Hastelloy (Ni-Cr-Mo alloys) with yttria-stabilized zirconia (YSZ) buffer layers were fabricated by in situ pulsed laser deposition in a multitarget processing chamber. Generally, it is difficult to make films on flexible metallic substrates due to inherent interdiffusion problems between metallic substrates and superconducting overlayers. To overcome this difficulty, it is necessary to use YSZ buffer layers since it will not only limit the interdiffusion process but also minimize the surface microcrack formation due to smaller mismatch between the film and the substrate. In order to enhance the crystallinity and the transport properties of YBCO films on metallic substrates, YSZ buffer layers were grown at various temperatures different with the deposition temperature to grow YBCO films. On YSZ buffer layer grown at higher temperature than that for YBCO film, the YBCO thin film was found to be textured with c-axis orientation by x-ray diffraction and had a high zero- resistance critical temperature of 85 K. Critical current density for this film at 77 K was 4.7 X J/cm2.

Paper Details

Date Published: 26 May 1998
PDF: 7 pages
Proc. SPIE 3404, ALT'97 International Conference on Laser Surface Processing, (26 May 1998); doi: 10.1117/12.308603
Show Author Affiliations
Young Sik Jeong, Yonsei Univ. (South Korea)
Joo Hyung Park, Yonsei Univ. (South Korea)
Sang Yeol Lee, Yonsei Univ. (South Korea)

Published in SPIE Proceedings Vol. 3404:
ALT'97 International Conference on Laser Surface Processing
Vladimir I. Pustovoy, Editor(s)

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