Hostname: page-component-54dcc4c588-smtgx Total loading time: 0 Render date: 2025-09-15T20:28:06.517Z Has data issue: false hasContentIssue false
  • English
  • Français

Fast-Ion Conduction and Disorder in Cation and Anion Arrays in Y2 (Zry Ti1−y )2O7 Pyrochlores Induced by Zr Substitution: a Neutron Rietveld Analysis

Published online by Cambridge University Press:  25 February 2011

C. Heremans ,
B.J. Wuensch ,
J.K. Stalick  and
E. Prince
C. Heremans
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
B.J. Wuensch
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
J.K. Stalick
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
E. Prince
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
Get access

Abstract

Structural refinements have been carried out on the Y2 (ZryTi1−y )2O7 system for increasing amounts of Zr substitution. The structure changes from an ordered pyrochlore structure (superstructure of the fluorite structure) to an anion-deficient fluorite structure. Separate processes govern the disordering of the cation and anion arrays. In particular, the anions begin to disorder at lower values of y than the cations. For intermediate compositions, a minor amount of fluorite phase coexists with the primary partially-disordered pyrochlore phase.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 293: Symposium U – Solid State Ionics III , 1992 , 349
Copyright
Copyright © Materials Research Society 1993

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.)

Article purchase

Temporarily unavailable

References

[1] Dijk, M.P. van and Burggraaf, A.J., Cormack, A.N. and Catlow, C.R.A., Solid State Ionics, 17, 159, 1985.Google Scholar
[2] Moon, P.K., Doctoral Thesis, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 1988.Google Scholar
[3] Dijk, T. van, Helmholdt, R.B. and Burggraaf, A.J., Phys. Stat. Sol. (a), 101, 765, 1980.Google Scholar
[4] Michel, D., Jorba, M. Perez Y and Collongues, R., Journal of Raman Spectroscopy, 5, 163, 1976.Google Scholar
[5] Moriga, T., Yoshiasa, A., Kanamaru, F., Koto, K., Yoshimura, M. and Somiya, S., Solid State Ionics, 31, 319, 1989.Google Scholar
[6] Uehara, T., Koto, K., Kanamaru, F. and Horiuchi, H., Solid State Ionics, 23, 137, 1987.Google Scholar
[7] Haile, S.M., Wuensch, B.J. and Prince, E., Mat. Res. Soc. Symp. Proc., 166, 81, 1990.Google Scholar
[8] Keating, D.T. and Warren, B.E., Journal of Applied Physics, 22, 286, 1951.Google Scholar