2020年
Local Structure Investigations of Accumulated Damage in Irradiated MgAl2O4
Journal of the American Ceramic Society
- 巻
- 103
- 号
- 8
- 開始ページ
- 4654
- 終了ページ
- 4663
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/jace.17101
- 出版者・発行元
- WILEY
Damaged structures in the MgAl(2)O(4)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 AlK-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
- ID情報
-
- DOI : 10.1111/jace.17101
- ISSN : 0002-7820
- eISSN : 1551-2916
- Web of Science ID : WOS:000543493000063