Journal of Solid State Electrochemistry

, Volume 5, Issue 7, pp 531–537

Mixed ionic-electronic conductivity in phases in the praseodymium oxide system

  • Venkataraman Thangadurai
  • Robert A. Huggins
  • Werner Weppner
Original Paper

DOI: 10.1007/s100080000187

Cite this article as:
Thangadurai, V., Huggins, R.A. & Weppner, W. J Solid State Electrochem (2001) 5: 531. doi:10.1007/s100080000187

Abstract.

The praseodymium oxide system contains a series of related phases with very narrow compositional width and unique extended defect structures, rather than the more common isolated point defects. The electrical conductivity of three of these phases has been measured by the use of AC complex impedance and DC methods in the temperature range 75–400 °C. The beta phase, Pr6O11, exhibits a total conductivity of 6.77×10–2 S/cm at 400 °C, with an activation energy of 0.52 eV/atom. The conductivity of the epsilon phase, Pr5O9, is slightly lower, with an activation energy of 0.51 eV/atom. The iota phase, Pr7O12, has a very low conductivity. The activation energies for electrical transport in the beta and epsilon phases are in the general range found in a number of mixed conductors based upon LSGM oxides.

Praseodymium oxides Oxide ion conduction Mixed conduction Intermediate temperature conductor Electrical properties 

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Venkataraman Thangadurai
    • 1
  • Robert A. Huggins
    • 1
  • Werner Weppner
    • 1
  1. 1.Faculty of Engineering, Christian Albrechts University, 24143 Kiel, GermanyGermany