Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-07T22:54:49.878Z Has data issue: false hasContentIssue false
  • English
  • Français

Monitoring of Process of Ion Transport in Nonstoichiometric Fluorides with the LaF3 Structure

Published online by Cambridge University Press:  16 February 2011

Nikolay I. Sorokin  and
Boris P. Sobolev
Nikolay I. Sorokin
Affiliation:
Institute of Crystallography, Russian Academy of Sciences, Leninsky prospect 59, Moscow 117333, Russia
Boris P. Sobolev
Affiliation:
Institute of Crystallography, Russian Academy of Sciences, Leninsky prospect 59, Moscow 117333, Russia
Get access

Abstract

Fluoride compounds with the tysonite (LaF3- type) crystal structure form an important class of materials which find diverse technological applications as fast ionic conductors. The results of investigations of the ionic conductivity process within tysonite structured R1-xMxF3-x single crystals (R=rare earths and M=alkali-rare earths) are presented using various techniques of electrical response spectroscopy. Influence of isomorphic substitutions of iso- and heterovalent cations on ion transport parameters was studied. By monitoring the composition of nonstoichiometric R1-xMxF3-x. crystals we can vary fluorine-ion conductivity within the range 10−7 - 10−4 S/cm at 293 K and 10−4 - 10−2 S/cm at 500 K. The studied nonstoichiometric crystals with the LaF3-structure are promising solid electrolytes which can be used in chemical sensors and fluorine generators.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 369: Symposium U – Solid State Ionics IV , 1994 , 487
Copyright
Copyright © Materials Research Society 1995

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. Ivanov-Shitz, A.K., Sorokin, N.I., Fedorov, P.P., and Sobolev, B.P., Solid State Ionics 31, 253 (1989); 31, 269 (1989)Google Scholar
2. Sorokin, N.I. and Sobolev, B.P., Kristallografiya 39, 114 (1994) [Crystallography Reports 39, 101 (1994)]Google Scholar
3. Sorokin, N.I. and Sobolev, B.P., Kristallografiya (in press, 1994) [Crystallography Reports (in press, 1994)]Google Scholar
4. Sorokin, N.I., Krivandina, E.A., Kuranov, D.N., Zhmurova, Z.I., and Sobolev, B.P., Kristallografiya (in press, 1995) [Crystallography Reports (in press, 1995)]Google Scholar
5. Sudakova, E.F., Alksnis, E.Ya., Perlovskii, R.S., Krivandina, E.A., and Sobolev, B.P., 1992 MRS Fall Meeting, Simposium on Solid State Ionics, Boston, MA, 1992, p. 160 Google Scholar