Structural disordering in magnesium aluminate spinel compounds under ion-beam irradiation

Syo Matsumura, Mikio Shimada, Kazuhiro Yasuda, Chiken Kinoshita

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

High Angular Resolution Electron Channeling X-ray Spectroscopy (HARECXS) of analytical electron microscopy was employed in quantitative analysis of irradiation-induced structural disordering in MgO·nAl2O 3 spinel compounds irradiated with 1 MeV Ne+ ions and 200 MeV Xe14+ ions. The results successfully show the disordering behavior in MgO·nAl2O3 as a function of composition and irradiation condition. It has been revealed by HARECXS that 1 MeV Ne + irradiation at 873 K causes significant cation-disordering in the pre-peak damaged area where no indication is recognized in conventional TEM observation. Displacement of O2- ions is also recognized in heavily damaged areas. Irradiation with 200 MeV Xe14+ swift ions, on the other hand, forms structurally-disordered cylinders of 4 nm in diameter along their tracks. HARECXS profiles indicate that the disordering takes place over extended areas of about 10 nm in radius centered on the ion tracks.

Original languageEnglish
Pages (from-to)131-142
Number of pages12
JournalUnknown Journal
Volume792
Publication statusPublished - 2003

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spinel
Ion beams
Magnesium
magnesium
irradiation
Irradiation
Electron spectroscopy
Ions
X ray spectroscopy
ion
X-ray spectroscopy
electron
electron microscopy
Chemical analysis
quantitative analysis
Electron microscopy
Cations
transmission electron microscopy
cation
Positive ions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Structural disordering in magnesium aluminate spinel compounds under ion-beam irradiation. / Matsumura, Syo; Shimada, Mikio; Yasuda, Kazuhiro; Kinoshita, Chiken.

In: Unknown Journal, Vol. 792, 2003, p. 131-142.

Research output: Contribution to journalArticle

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