Phase stability and electrical property of NiO-doped yttria-stabilized zirconia

Hiroki Kondo, Tohru Sekino, Takafumi Kusunose, Tadachika Nakayama, Yo Yamamoto, Koichi Niihara

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


The effects of NiO solid solution into yttria fully stabilized cubic zirconia (YSZ) on the phase stability and electrical properties of YSZ were investigated. Time-dependent conductivity change of NiO-doped YSZ at 1000 °C was also investigated. Raman spectra showed that weak tetragonal peaks in the YSZ monolith disappeared when NiO was added. In addition, the time-dependent conductivity of YSZ monolith sharply decreased after the first 30 h of annealing at 1000 °C, whereas NiO-doped YSZ did not show such decline. Therefore, the solid solution of NiO enhanced YSZ stability and produced time-dependent conductivity change with moderate time.

Original languageEnglish
Pages (from-to)1624-1628
Number of pages5
JournalMaterials Letters
Issue number9-10
Publication statusPublished - 2003 Feb


  • Cubic zirconia
  • Electrical properties
  • High-temperature stability
  • Ionic conductivity
  • Nickel oxide
  • Phase stability
  • Raman spectroscopy

ASJC Scopus subject areas

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


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