Effect of Axial Ratio on Critical Stress of Ferroelastic Domain Switching in Ceria-Partially-Stabilized Zirconia

  • KIGUCHI Takanori
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • SAIKI Atsushi
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • SHINOZAKI Kazuo
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • TERAYAMA Kiyoshi
    Department of Materials Science and Engineering, Faculty of Engineering, Toyama University
  • MIZUTANI Nobuyasu
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology

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Other Title
  • セリア部分安定化ジルコニアの強弾性ドメインスイッチングの臨界応力に及ぼす軸比の影響
  • セリア ブブン アンテイカ ジルコニア ノ キョウダンセイ ドメイン スイッチ

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Abstract

Xmol% CeO2-ZrO2 (x=14-34) pseudo-single crystals grown by floating zone method were uniaxially compressed in the range of 0 to 1400MPa at 700°C to examine the effect of axial ratio (c/a) on the critical stress of ferroelastic domain switching. The critical stress markedly increased with axial ratio. It could be understood, considering the Landau theory and the ferroelastic domain switching model based on the tetragonal to cubic second order ferroelastic transition, that the critical stress was proportional to the cube of (c/a-1).

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