Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-06-04T01:05:02.469Z Has data issue: false hasContentIssue false
  • English
  • Français

Kinetics of Phase Transitions in Superionic Pbsnf4 Versus Temperature

Published online by Cambridge University Press:  21 February 2011

Georges Denes ,
M. Cecilia Madamba  and
Galina Milova
Georges Denes
Affiliation:
Concordia University, Laboratory of Solid State Chemistry and Mossbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8, Canada.
M. Cecilia Madamba
Affiliation:
Concordia University, Laboratory of Solid State Chemistry and Mossbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8, Canada.
Galina Milova
Affiliation:
Concordia University, Laboratory of Solid State Chemistry and Mossbauer Spectroscopy, Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8, Canada.
Get access

Abstract

PbSnF4 is the highest performance fluoride ion conductor known to date and is starting to be used for the fabrication of chemical sensors. Although several phase transitions have been reported, with conflicting results from different groups, the exact sequence of phase transitions versus temperature and the kinetics of the phase transformations remain unclear. We have prepared the three phases that can be stabilized at ambient temperature, i.e. o-, α- and β-PbSnF4, and studied the stability of each phase versus temperature. It appears that some of the phases transform very slowly to another under prolonged heating at constant temperature. This is very important since the conductivity is not necessarily the same for each phase, and therefore, a phase transition taking place slowly in the PbSnF4 used for the fabrication of a device, might not be detectable by a short time evaluation but, it could well alter its properties after prolonged use.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 525
Copyright
Copyright © Materials Research Society 1998

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.)

References

REFERENCES

1 Denes, G., Yu, Y.H., Tyliszczak, T. and Hitchcock, A.P., J. Solid State Chem. 91,1 (1991).Google Scholar
2 Denes, G., Madamba, M.C. and Parris, J.M., Solid State Ionics IV, Mat. Res. Soc. Symp. Proc. 369, 463 (1995).Google Scholar
3 (a): Denes, G., Pannetier, J. and Lucas, J., C. R. Acad. Sc. (Paris), Ser. C 280, 831, (1975); (b): J. Pannetier, G. Denes and J. Lucas, Mat. Res. Bull. 14, 627 (1979).Google Scholar
4 (a): Perez, G., Vilminot, S., Granier, W., Cot, L., Lucat, C., Réau, J.M., Portier, J. and Hagenmuller, P., Mat. Res. Bull. 15, 587 (1980); (b): R. Kanno, K. Ohno H. Izumi, Y. Kawamoto, T. Kamiyana, H. Asano and F. Izumi, Solid State Ionics 70/71, 253(1994).Google Scholar
5 Denes, G., J. Solid State Chem. 77, 54 (1988).Google Scholar
6 Denes, G., Madamba, M.C., Milova, G. and Perfiliev, M., Electrically Based Microstructural Characterization. Mat. Res. Soc. Symp. Proc, submitted (1996).Google Scholar
7 Réau, J.M., Lucat, C., Portier, J., Hagenmuller, P., Cot, L. and Vilminot, S., Mat. Res. Bull. 13, 877 (1978).Google Scholar