Fast ion conduction in the Gd2(ZrxTi1−x) 2O7 pyrochlore system

  • P. K. Moon
  • H. L. Tuller
Part of the NATO ASI Series book series (NSSB, volume 199)


Electrical conductivity measurements as a function of temperature, oxygen fugacity and composition were made on the Gd2(ZrxTi1−x) 2O7, solid solution system. A large increase in ionic conductivity with increasing Zr content was found and related to the intrinsic anionic disorder.


Electrical Conductivity Measurement Intrinsic Disorder Solid Solution System Nonstoichiometric Oxide Anion Disorder 
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  1. 1.
    J. Grins, M. Nygren and T. Wallin, Studies on Stoichiometry and Ionic Conductivity of the Pyrochlore type T11+x,Ta1+x.W1−x06 nH20 System, Electrochimica Acta24: 803 (1979).Google Scholar
  2. 2.
    W.W. Barker, J. Graham, O. Knop and F. Brisse, Crystal Chemistry of Oxide Pyrochlores, in: “The Chemistry of Extended Defects in Non-Metallic Solids,” L. Eyring and M. O”Keeffe, ed., North-Holland Publishing Co., Amsterdam (1969).Google Scholar
  3. 3.
    K.J. de Vries, M.P. van Dijk, G.M.H. van de Velde and A.J. Burggraaf, A Study of Defect Equilibria in Nd2Zr20, with Pyrochlore Structure, in: “Solid State Chemistry 1982,” R. Metselaar, H.J.M. Heijligers and J. Schoonman, ed., Elsevier Scientific Publishing Co., Amsterdam (1983).Google Scholar
  4. 4.
    M.P van Dijk, A.J. Burggraaf, A.N. Cormack and C.R.A. Catlow, Defect Structures and Migration Mechanisms in Oxide Pyrochlores, Sol. St. Ionics, 17: 159 (1985).CrossRefGoogle Scholar
  5. 5.
    M.A. Subramanian, G.Aravamudan and G.V Subba Rao, Oxide Pyrochlores- A Review, Proq. Solid St. Chem. 15: 55 (1983).CrossRefGoogle Scholar
  6. 6.
    R.A. McCauley, Structural Characteristics of Pyrochlore Formation, J. Appl. Phys. 51: 290 (1980).ADSCrossRefGoogle Scholar
  7. 7.
    W.E. Klee and G. Weitz, Infrared Spectra of Ordered and Disordered Pyrochlore-type Compounds in the Series RE2Ti207 RE2Zr2O7, and RE2Hf207, J. Inorq. Nucl. Chem. 31: 2367 (1969).Google Scholar
  8. 8.
    B.E. Scheetz and W.B. White, Temperature-dependent Raman Spectra of Rare Earth Titanates with the Pyrochlore Structure: a Dipolar Order-Disorder Transition, Opt. Enq. 22: 302 (1983).Google Scholar
  9. 9.
    B.E. Scheetz and W.B. White, Characterization of Anion Disorder in Zirconate A2B20, Compounds by Raman Spectroscopy, J. Am. Ceram. Soc. 62: 468 (1979).CrossRefGoogle Scholar
  10. 10.
    D. Michel, M. Perez Y Jorba and R. Collongues, Etude de la Transformation Ordre-Desorde de la Structure Fluorite a la Structure Pyrochlore pour des Phases (1-x) ZrO2 − x Ln203 Mat. Res. Bull., 9: 1457 (1974).CrossRefGoogle Scholar
  11. 11.
    J.D. Faktor, J.A. Kilner and S.C.H. Steele, A Study of the Effect of Order-Disorder on the Anion Conductivity in the System Nd2 Zr2 O, -Nd2Ce20„ in: “Solid State Chemistry 1982,” R. Metselaar, H.J.M. Heijligers and J. Schoonman ed., Elsevier Scientific Publishing Co., Amsterdam (1983).Google Scholar
  12. 12.
    T. van Dijk, K.J. de Vries and A.J. Burggraaf, Electrical Conductivity of Fluorite and Pyrochlore LnxZr1−xO2−x/2 (Ln = Gd,Nd) Solid Solutions, Phys. Stat. Sol. 58: 115 (1980).CrossRefGoogle Scholar
  13. 13.
    M.P. Pechini, “Method of Preparing Lead and Alkaline Earth Titanates and Niobates and Coating Method Using the Same to Form a Capacitor”, U.S. Patent 3,330, 697 (1967).Google Scholar
  14. 14.
    H.L. Tuller, Mixed Conduction in Nonstoichiometric Oxides, in: “Nonstoichiometric Oxides”, O.T. Sorensen ed., Academic Press, New York (1981).Google Scholar
  15. 15.
    P.K. Moon and H.L. Tuller, Ionic Conduction in the Gd2Ti20,-Gd2Zr20, System, to be published in “Proceedings of the Sixth International Conference on Solid State Ionics”, Garmisch-Partenkirchen, FRG, September 6, 1987. Solid State Ionics.Google Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • P. K. Moon
    • 1
  • H. L. Tuller
    • 1
  1. 1.Crystal Physics and Optical Electronics Laboratory Department of Materials Science and EngineeringMassachusetts Institute of TechnologyCambridgeUSA

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