Skip to main content
Log in

Rates of change in high temperature electrical resistivity and oxygen diffusion coefficient in Ba2YCu3Ox

  • Rapid Communications
  • Published:
Applied Physics A Aims and scope Submit manuscript

Abstract

The change in electrical resistance with time for bulk, thick-film, and thin-film Ba2YCu3Ox at atmospheric pressure is described as a function of the oxygen partial pressure (100 to 0.001%) and temperature (320°–750°C). The potential usefulness of these materials as oxygen sensors is demonstrated. The rate of equilibration is faster during oxygen uptake than during its loss. Time constants τ to reach equilibration (1/e remaining), qualitatively scale with sample dimensions. For a 1μm film at 600° C,τ <1 s for the range of PO2 (O2 being a shorthand for O2) from 100% to 0.001%. The rate increases markedly with increasing PO2. The actual resistance decreases with PO2 at a rate of logρ/log PO2 = 0.4 at 700° C showing adequate sensitivity for sensor purposes. Times for the transient resistance change in the sample where used to estimate the oxygen diffusion coefficient in the ceramic. The diffusivities obtained are 4·10−11−1·10−12 cm2/s in the 435°–320° C range, with an activation energy of ≅27 kcal/mole.

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

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. S. Sageev Grader, P.K. Gallagher, E.M. Gyorgy: Appl. Phys. Lett.51, 115 (1987)

    Google Scholar 

  2. P.K. Gallagher, H.M. ÓBryan, S.A. Sunshine, D.W. Murphy: Mat. Res. Bull.22, 995 (1987)

    Google Scholar 

  3. P.K. Gallagher: Adv. Cer. Mat.2, 632 (1987)

    Google Scholar 

  4. G. Sageev Grader, P.K. Gallagher: Adv. Cer. Mat.2, 649 (1987)

    Google Scholar 

  5. M. Gurvitch, A.T. Fiory: Appl. Phys. Lett.51, 1027 (1987)

    Google Scholar 

  6. Y.H. Han, D.W. Monroe: MRS Proceedings,submitted (Dec. 1987)

  7. A.T. Fiory, M. Gurvitch, R.J. Cava, G.P. Espinoza: Phys. Rev. B (in press)

  8. H.M. ÓBryan, P.K. Gallagher: in preparation

  9. R.B. Bird, W.E. Stewart, E.N. Lightfoot:Transport Phenomena (Wiley, New York 1960)

    Google Scholar 

  10. R.J. Highmore: private communication

  11. H.M. ÓBryan, P.K. Gallagher: Adv. Cer. Mat.2, 640 (1987)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sageev Grader, G., Gallagher, P.K., Thomson, J. et al. Rates of change in high temperature electrical resistivity and oxygen diffusion coefficient in Ba2YCu3Ox . Appl. Phys. A 45, 179–183 (1988). https://doi.org/10.1007/BF00615001

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00615001

PACS

Navigation