Abstract
Superconducting films of "1223" Tlx Ca2Ba2Cu3Oy (0.65<×<l.00) have been prepared on polycrystalline yttria stabilized zirconia substrates via the reaction of thallium oxide vapor with spray-deposited Ca-Ba-Cu-oxide films containing silver. The silver addition permits the formation at 860C of oriented, interconnected polycrystalline superconducting films with Tc(0) values of 104-107K. Samples have been prepared routinely with 77K zero-field dc transport critical current densities >10,000A/cm2 with values as high as 105,000A/cm2 having been measured. The range in Jc values measured is believed to be related, at least in part, to inhomogeneities in the films. The excellent in-field characteristics of the "1223" thick films are reflected in the behavior of the "105,000A/cm2" sample for which J >10,000A/cm2 was measured at 60K in a 2 Tesla field applied parallel to the crystallographic c-axis
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DeLuca, J.A., Karas, P.L., Tkaczyk, J.E. et al. The Synthesis of "1223" TL-CA-BA-CU-Oxide Superconducting Films Via the Reaction of Silver-Containing Spray Deposited Oxide Precursors with Thallium Oxide Vapor in a Two-Zone Reactor. MRS Online Proceedings Library 275, 669–674 (1992). https://doi.org/10.1557/PROC-275-669
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DOI: https://doi.org/10.1557/PROC-275-669