論文

査読有り
2020年8月1日

Local structure investigations of accumulated damage in irradiated MgAl<inf>2</inf>O<inf>4</inf>

Journal of the American Ceramic Society
  • Satoru Yoshioka
  • ,
  • Konosuke Tsuruta
  • ,
  • Tomokazu Yamamoto
  • ,
  • Kazuhiro Yasuda
  • ,
  • Syo Matsumura
  • ,
  • Takeharau Sugiyama
  • ,
  • Yojiro Oba
  • ,
  • Norito Ishikawa
  • ,
  • Eiichi Kobayashi
  • ,
  • Koji Okudaira

103
8
開始ページ
4654
終了ページ
4663
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/jace.17101

© 2020 The American Ceramic Society Damaged structures in the MgAl2O4 spinel induced by swift heavy ions were investigated using the X-ray absorption near edge structure (XANES) and small angle X-ray scattering (SAXS). Increasing the fluence of 100 MeV Xe ions leads to increased SAXS intensity and XANES spectral changes on both Mg and Al K-edges. The damaged regions of ion tracks were observed by SAXS to be cylindrical in shape with a diameter of 5 nm. The theoretical XANES spectra indicated that the changes in the experimental spectra were due to the cationic disordering between tetrahedral and octahedral sites. This disordering caused an increase in the inversion degree of the cations. Furthermore, the quantitative analysis of the XANES spectra revealed the preferential occupation of cations at the octahedral sites at high fluence.

リンク情報
DOI
https://doi.org/10.1111/jace.17101
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082132114&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85082132114&origin=inward

エクスポート
BibTeX RIS