X-ray absorption near edge structure and first-principles spectral investigations of cationic disorder in MgAl 2 O 4 induced by swift heavy ions

Cationic disorder in the MgAl O 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 fun...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2018-02, Vol.20 (7), p.4962-4969
Main Authors: Yoshioka, S, Tsuruta, K, Yamamoto, T, Yasuda, K, Matsumura, S, Ishikawa, N, Kobayashi, E
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cationic disorder in the MgAl O 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 MgAl O induced by the high density electronic excitation under swift heavy ion irradiation.
ISSN:1463-9076
1463-9084
DOI:10.1039/c7cp07591j