TY - JOUR
T1 - Electronic ionization induced atom migration in spinel MgAl 2O4
AU - Jiang, Nan
AU - Spence, John
N1 - Funding Information:
This work is supported by NSF DMR0603993. The use of facilities within the Center for Solid State Science at ASU is also acknowledged.
PY - 2010/8
Y1 - 2010/8
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jnucmat.2010.06.013
DO - 10.1016/j.jnucmat.2010.06.013
M3 - Article
AN - SCOPUS:77955427177
SN - 0022-3115
VL - 403
SP - 147
EP - 151
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -