Oxygen tracer diffusion in magnesium-doped ZnO ceramics

Isao Sakaguchi, Kenji Matsumoto, Takeshi Ohgaki, Yutaka Adachi, Ken Watanabe, Naoki Ohashi, Hajime Haneda

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

ZnO samples added with MgO of 1.411.7mol% were used for studying oxygen diffusion by the vaporsolid exchange method. The analyses of oxygen diffusion profiles and impurities were performed by secondary-ion mass spectrometry (SIMS). The results indicate that the increase of MgO concentration enhances oxygen diffusion. The difference between the bulk-diffusion coefficients of oxygen for ZnO samples added with MgO of 1.4 and 11.7mol% was about two orders of magnitude. It was found that the grain boundary diffusion coefficients of oxygen in ZnO with 11.7mol% of MgO were larger than those in other samples, by a factor of about 10. Above results indicate that MgO addition into ZnO increases the concentration of effective defects for that promote oxygen diffusion. As the effective defects, the possibilities of vacancy and interstitial of oxygen are discussed.

本文言語英語
ページ(範囲)362-365
ページ数4
ジャーナルJournal of the Ceramic Society of Japan
118
1377
DOI
出版ステータス出版済み - 5 2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

フィンガープリント

「Oxygen tracer diffusion in magnesium-doped ZnO ceramics」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル