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DC-sputtered high tc superconducting YBCO thin films on silicon substrates

✍ Scribed by Lelia Ciontea; Traian Petrisor; Alin Giurgiu

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 343 KB
Volume: 1
Category: Article
ISSN: 0964-1807
DOI: 10.1016/0964-1807(93)90295-d

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✦ Synopsis

We have prepared thin films of YBCO on Si (100) and on Si with Ag-buffer layer by DC-magnetron sputtering. Post-deposition annealing at 7173K was necessary in order to obtain superconducting films. The films on silicon have no superconducting transition down to 50k. The films on silicon with Ag-buffer layer have a broad superconducting transition with Tonset=95K and Tco=~~K. The X-ray diffraction studies show that films are oriented with c-axis perpendicular to the substrate. The critical current density for these films is aboat 10,000 A/sq.cm-at 77K.

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