Electronic ionization induced atom migration in spinel MgAl 2O4

Nan Jiang, John Spence

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

We report direct spectroscopic evidence for atom migration during the initial stage of electron irradiation in spinel MgAl2O4. Time-dependent electron energy-loss spectroscopy of the Mg and Al L23 edges shows that both Mg and Al have a tendency to occupy the octahedral interstices under electron irradiation, along with a slight expansion of the Al-O bonding distance, but there is little change in the structural framework of oxygen. The process is irreversible at room temperature.

Original languageEnglish (US)
Pages (from-to)147-151
Number of pages5
JournalJournal of Nuclear Materials
Volume403
Issue number1-3
DOIs
StatePublished - Aug 1 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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