Hostname: page-component-848d4c4894-ttngx Total loading time: 0 Render date: 2024-05-01T17:17:46.628Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies of weight changes and oxygen diffusion in oxide superconductorsa)

Published online by Cambridge University Press:  31 January 2011

S-F. Lau ,
A.B. Rosenthal ,
N.P. Pyrros ,
J.A. Graham  and
H.N. Gheng
S-F. Lau
Affiliation:
Hercules Incorporated, Research Center, Wilmington, Delaware 19894
A.B. Rosenthal
Affiliation:
Hercules Incorporated, Research Center, Wilmington, Delaware 19894
N.P. Pyrros
Affiliation:
Hercules Incorporated, Research Center, Wilmington, Delaware 19894
J.A. Graham
Affiliation:
Hercules Incorporated, Research Center, Wilmington, Delaware 19894
H.N. Gheng*
Affiliation:
Hercules Incorporated, Research Center, Wilmington, Delaware 19894
*
b)Address correspondence to this author.
Get access

Abstract

In sintering and annealing of ceramic superconductors, diffusion of oxygen and sample weight changes are two important parameters to understand. In this work, we have undertaken to make weight loss measurements at different temperatures. At 400–600 °C, the weight loss data can be simply interpreted via one diffusion process. The Arrhenius activation energy is found to be ca. 23 kcal/mole. At 500 °C, the isotropic diffusion constant was found to be 9.5 × 10−12 cm2/s. Above 600 °C, the weight loss curves become complex and indicate the occurrence of two diffusion processes. The oxygen loss and the oxygen uptake data are interpreted via our present knowledge of this system.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 2 , February 1991 , pp. 227 - 231
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

a)

Presented at the Materials Research Society Meeting, Boston, Massachusetts, in November, 1988.

References

1Wu, M. K., Ashburn, J. R., Torng, C. J., Hor, P. H., Meng, R. L., Gao, L., Huang, Z. J., Wang, Y. Q., and Chu, C. W., Phys. Rev. Lett. 58, 908 (1987).CrossRefGoogle Scholar
2Clarke, D. R., Adv. Ceram. Mater. 2, 1 (1987).Google Scholar
3Murphy, D. W., Johnson, D. W., Jin, S., and Howard, R. E., Science 241, 922 (1988).CrossRefGoogle Scholar
4Crabtree, G. W., Downey, J. W., Flandermeyer, B. K., Jorgensen, J. D., Klippert, T. E., Kupperman, D. S., Kwok, W. K., Lam, D. J., Mitchell, A. W., McKale, A. G., Nevitt, M. V., Nowicki, L. J., Paulikas, A. P., Poeppel, R. B., Rothman, S. J., Routbort, J. L., Singh, J. P., Sowers, C. H., Umezawa, A., and Veal, B. W., Adv. Ceram. Mater. 2, 444 (1987).CrossRefGoogle Scholar
5Tu, K. N., Park, S. I., and Tsuei, C. C., Appl. Phys. Lett. 51, 2158 (1987).CrossRefGoogle Scholar
6Park, J. H. and Kostic, P., Mater. Lett. 6, 393 (1988).CrossRefGoogle Scholar
7Matsui, T., Naito, K., and Sadaaki, H., cited in Ref. 12.Google Scholar
8O'Sullivan, E. J. M. and Chang, B. P., Appl. Phys. Lett. 52, 1441 (1988).CrossRefGoogle Scholar
9Tu, K. N., Tsuei, C. C., Park, S. I., and Levi, A., Phys. Rev. B 38, 772 (1988).CrossRefGoogle Scholar
10Tallon, J. L. and Staines, M. P., paper presented at Materials Research Society Meeting, Las Vegas, NV, April 1988, cited by Ref. 12.Google Scholar
11Ikuma, Y. and Akiyoshi, A., J. Appl. Phys. 64, 3915 (1988).CrossRefGoogle Scholar
12Rothman, S. J., Routbort, J. L., Nowicki, L. J., Goretta, K. C., Thompson, L. J., and Mundy, J. N., Proceedings of DIMETA-88, International Conference on Diffusion in Metals and Alloys, Balaton-fured, Hungary, September 5–9, 1988.Google Scholar
13Vischjager, D. J., Van der Put, P. J., Schram, J., and Schoonman, J., Solid State Ionics 27, 199 (1988).CrossRefGoogle Scholar
14Teske, C. L. and Müller-Buschbaum, H., Z. Naturforsch. 43a, 965 (1988).CrossRefGoogle Scholar
15Leroy, K., Mullens, J., Yperman, J., Van Hees, J., and Van, L. C.Poucke, Thermochim. Acta 136, 343 (1988).CrossRefGoogle Scholar
16Haller, I., Shafer, M. W., Figat, R., and Goland, D. B., in Chemistry of Oxide Superconductors, edited by Rao, C. N. R. (IUPAC, Black-well Sci. Publ., 1988), pp. 93–100.Google Scholar
17Ottaviani, G., Nobili, C., Nava, F., Affronte, M., Manfredini, T., Matacotta, F. C., and Galli, E., Phys. Rev. B 39, 9069 (1989).CrossRefGoogle Scholar
18Kini, A. M., Geiser, U., Kao, H-C.I., Carlson, F. D., Wang, H. H., Monaghan, M. R., and Williams, J. M., Inorg. Chem. 26, 1836 (1987).CrossRefGoogle Scholar
19Eatough, M. O., Ginley, D. S., Morosin, B., and Venturini, E. L., Appl. Phys. Lett. 51, 367 (1987).CrossRefGoogle Scholar
20Gallagher, P. K., Adv. Ceram. Mater. 2, 632 (1987).CrossRefGoogle Scholar
21Han, Y. H. and Monroe, D. W., in High-Temperature Superconductors, edited by Brodsky, M. B., Dynes, R. C., Kitazawa, K., and Tuller, H. L. (Mater. Res. Soc. Symp. Proc. 99, Pittsburgh, PA, 1988), p. 753.Google Scholar
22Fiory, A. T., Gurvitch, M., Cava, R. J., and Espinosa, G. P., Phys. Rev. B 36, 7262 (1987).CrossRefGoogle Scholar