Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-29T10:46:27.610Z Has data issue: false hasContentIssue false
  • English
  • Français

Oxide-Ion Transport in Gadolinium Zirconate - Titanates under High Pressure

Published online by Cambridge University Press:  01 February 2011

Hitoshi Takamura ,
Hirofumi Kakuta ,
Atsunori Kamegawa ,
Masuo Okada  and
Harry L. Tuller
Hitoshi Takamura
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University, 6–6–02 Aoba-yama, Sendai 980–8579, Japan CREST, Japan Science and Technology Agency
Hirofumi Kakuta
Affiliation:
Institute for Materials Research, Tohoku University, 2–2–1 Katahira, Sendai 980–8577, Japan
Atsunori Kamegawa
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University, 6–6–02 Aoba-yama, Sendai 980–8579, Japan CREST, Japan Science and Technology Agency
Masuo Okada
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University, 6–6–02 Aoba-yama, Sendai 980–8579, Japan CREST, Japan Science and Technology Agency
Harry L. Tuller
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
Get access

Abstract

The oxide-ion conduction of gadolinium zirconate - titanates, Gd2(Ti1−xZrx)2O7 (GTZ), has been investigated under high pressure in the range of 2 to 6 GPa with the aid of a cubic-anvil-type apparatus. For these pyrochlore compounds, the oxide-ion conductivity at elevated temperatures in the range of 750 to 960 °C decreased with increasing pressure, indicating the presence of a positive activation volume, ΔV. The activation volumes ΔV of GZ (x = 1.0) and GTZ (x = 0.95) were 2.0 and 1.3 cm3/mol, respectively, at 750 °C and decreased with increasing temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K2.10
Copyright
Copyright © Materials Research Society 2005

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. Moon, P. K. and Tuller, H. L., Solid State Ionics 28, 470 (1988).Google Scholar
2. Takamura, H. and Tuller, H. L., Solid State Ionics 134, 67 (2000).Google Scholar
3. Wuensch, B. J., Eberman, K. W., Heremans, C., Ku, E. M., Onnerud, P., Yeo, E. M. E., Haile, S. M., Stalick, J. K., and Jorgensen, J. D., Solid State Ionics 129, 111 (2000).Google Scholar
4. Mitha, S., Aziz, M. J., Schiferl, D., and Poker, D. B., Appl. Phys. Lett. 69, 922 (1996).Google Scholar
5. Samara, G. A., Solid State Physics-Advances in Research and Applications 38, 1 (1984).Google Scholar
6. Takamura, H., Kakuta, H., Goto, Y., Kamegawa, A., and Okada, M., Mater. Trans. 42, 1301 (2001).Google Scholar