Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Process monitoring during post-annealing of YBa2Cu3O7 thin films containing fluorine

  • 18 Accesses

  • 3 Citations

Abstract

The post-annealing method of producing thin films of YBa2Cu3O7 (YBCO) has taken on a new impetus due to the recent work showing that films of the highest quality can be made by using low partial pressures of oxygen during the annealing cycle. Here it is shown that for films produced by using BaF2 as a source material, the post-annealing procedure can be closely controlled by monitoring the F that evolves due to the water vapor reaction with BaF2. The use of an ion-sensitive electrode allowed small F evolution rates (about 1 ng s−1) to be detected above background, sufficient to measure the F evolution rate from even the smallest samples used. The time interval during which F evolves was found to increase with increasing YBCO film area being annealed.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    A. Mogro-Campero and L. G. Turner,Appl. Phys. Lett. 58, 417 (1991).

  2. 2.

    R. Feenstra, T. B. Lindemer, J. D. Budai, and M. D. Galloway,J. Appl. Phys. 69, 6569 (1991).

  3. 3.

    A. Mogro-Campero and L. G. Turner,Physica C 176, 429 (1991).

  4. 4.

    A. Mogro-Campero and L. G. Turner,J. Superconduct. 4, 279 (1991).

  5. 5.

    A. Mogro-Campero and L. G. Turner inSuperconductivity and its Application, ed. Y. H. Kao, A. E. Kaloyeros, and H. S. Kwok, AIP Conference Proceedings No. 251 (American Institute of Physics, New York), pp. 62–67 (1992).

  6. 6.

    A. Mogro-Campero and L. G. Turner,J. Superconduct. 5, 143 (1992).

  7. 7.

    P. M. Mankiewich, J. H. Scofield, W. J. Skocpol, R. E. Howard, A. H. Dayem, and E. Good,Appl. Phys. Lett. 51, 1753 (1987).

  8. 8.

    S. -W. Chan, B. G. Bagley, L. H. Greene, M. Giroud, W. L. Feldman, K. R. Jenkin, II, and B. J. Wilkins,Appl. Phys. Lett. 53, 1443 (1988).

  9. 9.

    M. P. Siegal, J. M. Phillips, R. B. van Dover, T. H. Tiefel, and J. H. Marshall,J. Appl. Phys. 68, 6353 (1990).

  10. 10.

    F. H. Garzon, I. D. Raistrick, and D. R. Brown,J. Electron. Mater. 21, 483 (1992).

  11. 11.

    A. Mogro-Campero, L. G. Turner, and G. Kendall,Appl. Phys. Lett. 53, 2566 (1988).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Mogro-Campero, A., Turner, L.G. Process monitoring during post-annealing of YBa2Cu3O7 thin films containing fluorine. J Supercond 5, 167–170 (1992). https://doi.org/10.1007/BF00618062

Download citation

Key words

  • Superconducting films
  • YBa2Cu3O7
  • post-annealing
  • process monitoring