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Proceedings Paper

Advances In Pulsed Laser Deposition Of Y-Ba-Cu-O Superconducting Thin Films
Author(s): E. W Chase; T. Venkatesan; C. C. Chang; M. S. Hegde; D. M. Hwang; L. Nazar; J. M. Tarascon; B. Wilkens; D. Hart; X. D. Wu
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Paper Abstract

Thin superconducting (10 to 500 nm) films of Y-Ba-Cu-O with transition temperatures (Tc) near 90 K and transition widths of less than 1 K were deposited using a excimer laser; films were superconducting down to 5 nm, but with lower Tc's. Films grown on (100) strontium titanate at temperatures above 700 K were nearly epitaxial with the Y-Ba-Cu-O c-axis normal to the substrate surface. The critical currents (Jc's) were also very high. A 100 nm film on strontium titanate had a Jc of 4x10E6 A/cm 2 at 81 K. A film deposited directly on Si showed a Tc of 50 K, however a Y-Ba-Cu-O film on epitaxial buffer layers of magnesium aluminate followed by barium titanate on Si gave a 87 K transition. Superconducting Y-Ba-Cu-O on fluorides directly showed for Mg-F a Tc of 83 K and 73 K for both Sr-F and Ba-F.

Paper Details

Date Published: 15 August 1989
PDF: 13 pages
Proc. SPIE 1056, Photochemistry in Thin Films, (15 August 1989); doi: 10.1117/12.951637
Show Author Affiliations
E. W Chase, Bellcore (United States)
T. Venkatesan, Bellcore (United States)
C. C. Chang, Bellcore (United States)
M. S. Hegde, BelIcore (United States)
D. M. Hwang, Bellcore (United States)
L. Nazar, Bellcore (United States)
J. M. Tarascon, Bellcore (United States)
B. Wilkens, Bellcore (United States)
D. Hart, Bellcore (United States)
X. D. Wu, Rutgers University (United States)

Published in SPIE Proceedings Vol. 1056:
Photochemistry in Thin Films
Thomas F. George, Editor(s)

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