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Proceedings Paper

Superconducting Bi-Sr-Ca-Cu-O Films Prepared by Laser Ablation
Author(s): A. Gupta; G. Koren; G. V. Chandrashekhar; A. Segmuller
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Paper Abstract

Superconducting thin films of Bi-Sr-Ca-Cu-O have been grown on single crystal (100) SrTiO3 and MgO substrates using laser ablation at 355 nm. Films have been deposited using compositions of 2:2:1:2 (Bi:Sr:Ca:Cu) and 1.86:0.33:1.93:2.06:3.06 (Bi:Pb:Sr:Ca:Cu) to form primarily the low temperature Bi2Sr2CalCu20, and the high temperature Bi2Sr2Ca2Cu3Ox phases, respectively. Films deposited at 760-765°C substrate temperature in the presence of 1 Torr of oxygen show superconducting onset temperatures of 85 K and 110 K, respectively, for the two compositions, with zero resistance obtained at about 70 K in both cases. The zero resistance temperatures for the films can be improved by subsequent annealing of the films at higher temperatures.

Paper Details

Date Published: 19 March 1990
PDF: 6 pages
Proc. SPIE 1187, Processing of Films for High Tc Superconducting Electronics, (19 March 1990); doi: 10.1117/12.965155
Show Author Affiliations
A. Gupta, IBM Thomas J. Watson Research Center (United States)
G. Koren, IBM Thomas J. Watson Research Center (United States)
G. V. Chandrashekhar, IBM Thomas J. Watson Research Center (United States)
A. Segmuller, IBM Thomas J. Watson Research Center (United States)


Published in SPIE Proceedings Vol. 1187:
Processing of Films for High Tc Superconducting Electronics
T. Venkatesan, Editor(s)

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