Influence of deposition and annealing parameters on some properties of YBCO films prepared by spray pyrolysis |
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| Authors: | A Conde-Gallardo M Jergel C Falcony S Chromik and J G Cabañas Moreno |
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| Affiliation: | (1) Depto. de Física, Centro de Investigatión y de Estudios Avanzados del IPN, Apdo. Postal 14-740, 07300 México, D. F., México;(2) Institute of Electrical Engineering, Slovak Academy of Sciences, 84239 Bratislava, Slovak Republic;(3) Depto. de Ingeniería y Metalúrgica, Instituto Politécnico Nacional, Apdo. Postal 75-373, 07300 México, D. F., México |
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| Abstract: | Superconducting YBCO films were prepared by chemical deposition of aerosol generated from nitrate solutions by pneumatic and ultrasonic atomizers. Single crystalline YSZ and MgO substrates were used. Two different substrate temperatures were applied, with the chemical composition of starting solutions being adjusted accordingly. Deposited precursor films were thermally processed under two basically different conditions, i.e., either in atmospheric O2 atT 900°C, or in
atT 600°C. The influence of these different deposition and annealing parameters onT
c
andJ
c
values, microstructure, and surface morphology is reported. By optimizing our technological procedure, a real possibility exists to prepare (by means of aerosol deposition) YBCO films withJ
c values of at least 104–105 A/cm2, at processing temperatures (both deposition and annealing as well) not exceeding 600–700°C. |
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| Keywords: | YBCO film processing preparation properties |
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