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YBa2Cu3O7−x Thin Films by Citrate-Based Non-fluorine Precursor

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Abstract

A new fluorine-free chemical solution deposition route has been developed for YBa2Cu3O7−x (YBCO) thin films. The precursor was formed by dissolving metal nitrates and citric acid in ethylene glycol. Polyethyleneimine was used to modify the solution. The preparation of YBCO thin films consisted of repeated dip coating, drying, heat-treating in air and annealing in flowing argon with a small addition of oxygen and with final treatment in pure oxygen. The films were characterized by XRD and SEM and show dominating and well-textured YBCO phase. The AC susceptibility and magnetization measurements reveal a critical temperature about 90 K and a high critical current density, comparable with that of pulse laser deposited films. The simplicity and high performance of the method may be attractive for large-scale superconducting applications.

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Authors and Affiliations

  1. School of Metallurgy and Materials, University of Birmingham, Birmingham, B15 2TT, UK

    W. Cui, P. Mikheenko, T. W. Button, J. S. Abell & A. Crisan

  2. College of Chemistry and Chemical Engineering, Ocean University of China, No. 238 Songling Road, Qingdao, 266003, China

    W. Cui & L. M. Yu

  3. National Institute of Materials Physics, Bucharest, 077125, Romania

    A. Crisan

Authors
  1. W. Cui
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  2. P. Mikheenko
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  3. L. M. Yu
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  4. T. W. Button
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  5. J. S. Abell
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  6. A. Crisan
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Correspondence to A. Crisan.

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Cui, W., Mikheenko, P., Yu, L.M. et al. YBa2Cu3O7−x Thin Films by Citrate-Based Non-fluorine Precursor. J Supercond Nov Magn 22, 811–815 (2009). https://doi.org/10.1007/s10948-009-0504-7

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  • DOI: https://doi.org/10.1007/s10948-009-0504-7

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