X-ray absorption near edge structure and first-principles spectral investigations of cationic disorder in MgAl2O4 induced by swift heavy ions

S. Yoshioka, K. Tsuruta, T. Yamamoto, K. Yasuda, S. Matsumura, N. Ishikawa, E. Kobayashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cationic disorder in the MgAl2O4 spinel induced by swift heavy ions was investigated using the X-ray absorption near edge structure. With changes in the irradiation fluences of 200 MeV Xe ions, the Mg K-edge and Al K-edge spectra were synchronously changed. The calculated spectra based on density function theory indicate that the change in the experimental spectra was due to cationic disorder between Mg in tetrahedral sites and Al in octahedral sites. These results suggest a high inversion degree to an extent that the completely random configuration is achieved in MgAl2O4 induced by the high density electronic excitation under swift heavy ion irradiation.

Original languageEnglish
Pages (from-to)4962-4969
Number of pages8
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number7
DOIs
Publication statusPublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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