A Comparative Study of Radiation Damage In A12O3, FeTiO3, And MgTiO3 Academic Article uri icon

abstract

  • AbstractOriented single crystals of synthetic alpha-alumina (-12O3), geikielite (MgTiO3), and natural ilmenite (FeTiO3) were irradiated with 200 keV argon ions under cryogenic conditions (100 K) to assess their damage response. Using Rutherford backscattering spectrometry combined with ion channeling techniques, it was found that ilmenite amorphized readily at doses below 51014, alumina amorphized at a dose of 1-2x1015, and geikielite was amorphized at -2x1015 Ar cm-2 . The radiation damage response of the ilmenite crystal may be complicated by the presence of hematite exsolution lamellae and the experimentally induced oxidation of iron. The relative radiation-resistance of geikielite holds promise for similar behavior in other Mg-Ti oxides.

published proceedings

  • MRS Advances

author list (cited authors)

  • Mitchell, J. N., Yu, N., Sickafus, K. E., Nastasi, M., Taylor, T. N., Mcclellan, K. J., & Nord, G. L.

citation count

  • 2

complete list of authors

  • Mitchell, Jeremy N||Yu, Ning||Sickafus, Kurt E||Nastasi, Michael||Taylor, Thomas N||Mcclellan, Kenneth J||Nord, Gordon L

publication date

  • January 1995