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.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
A. Mogro-Campero and L. G. Turner,Appl. Phys. Lett. 58, 417 (1991).
R. Feenstra, T. B. Lindemer, J. D. Budai, and M. D. Galloway,J. Appl. Phys. 69, 6569 (1991).
A. Mogro-Campero and L. G. Turner,Physica C 176, 429 (1991).
A. Mogro-Campero and L. G. Turner,J. Superconduct. 4, 279 (1991).
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).
A. Mogro-Campero and L. G. Turner,J. Superconduct. 5, 143 (1992).
P. M. Mankiewich, J. H. Scofield, W. J. Skocpol, R. E. Howard, A. H. Dayem, and E. Good,Appl. Phys. Lett. 51, 1753 (1987).
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).
M. P. Siegal, J. M. Phillips, R. B. van Dover, T. H. Tiefel, and J. H. Marshall,J. Appl. Phys. 68, 6353 (1990).
F. H. Garzon, I. D. Raistrick, and D. R. Brown,J. Electron. Mater. 21, 483 (1992).
A. Mogro-Campero, L. G. Turner, and G. Kendall,Appl. Phys. Lett. 53, 2566 (1988).
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
- Superconducting films
- process monitoring