Oxide-ion transport in gadolinium zirconate - Titanates under high pressure

Hitoshi Takamura, Hirofumi Kakuta, Atsunori Kamegawa, Masuo Okada, Harry L. Tuller

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The oxide-ion conduction of gadolinium zirconate - titanates, Gd 2(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.

Original languageEnglish
Article numberK2.10
Pages (from-to)63-67
Number of pages5
JournalMaterials Research Society Symposium Proceedings
Volume835
Publication statusPublished - 2005 Jun 20
EventSolid State Ionics - 2004 - Boston, MA, United States
Duration: 2004 Nov 292004 Dec 2

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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