Cubic zirconia crystalline surface oxide epitaxial formation on ZrB2(0001) confirmed by circularly-polarized-light photoelectron diffraction

Rie Horie, Fumihiko Matsui, Naoyuki Maejima, Hirosuke Matsui, Kota Tanaka, Hiroshi Daimon, Tomohiro Matsushita, Shigeki Otani, Takashi Aizawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Pure cubic zirconia (c-ZrO2) is unstable at room temperature. We achieved the epitaxial formation of c-ZrO2 crystalline surface oxide islands on ZrB2(0001) by annealing the substrate without sample cleaning at 950°C under ultrahigh-vacuum conditions. The interface structure at the c-ZrO2 islands and the ZrB2(0001) substrate was investigated using element-specific circularly-polarized-light photoelectron diffraction, angle-resolved X-ray photoelectron spectroscopy, and reflection high-energy electron diffraction (RHEED). The ZrO2(111) islands was a twin crystal oriented in ZrO2[110]//ZrB2[2110], and was stable up to around 1500°C. The Zr-Zr distance of ZrB2 bulk and that of ZrO2(111) agree with at the ratio of 8 to 7.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Volume13
DOIs
Publication statusPublished - Jan 1 2015
Externally publishedYes

Keywords

  • Epitaxial surface oxide
  • Photoelectron diffraction
  • Reflection high-energy electron diffraction (RHEED)
  • Soft X-ray photoelectron spectroscopy
  • Surface structure
  • ZrB
  • c-ZrO

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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