Ion irradiation damage in ilmenite at 100 K
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
By: J.N. Mitchell, N. Yu, R. Devanathan, K.E. Sickafus, M.A. Nastasi, and G.L. Nord Jr.
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Abstract
A natural single crystal of ilmenite (FeTiO3) was irradiated at 100 K with 200 keV Ar2+. Rutherford backscattering spectroscopy and ion channeling with 2 MeV He+ ions were used to monitor damage accumulation in the surface region of the implanted crystal. At an irradiation fluence of 1 ?? 1015 Ar2+/cm2, considerable near-surface He+ ion dechanneling was observed, to the extent that ion yield from a portion of the aligned crystal spectrum reached the yield level of a random spectrum. This observation suggests that the near-surface region of the crystal was amorphized by the implantation. Cross-sectional transmission electron microscopy and electron diffraction on this sample confirmed the presence of a 150 nm thick amorphous layer. These results are compared to similar investigations on geikielite (MgTiO3) and spinel (MgAl2O4) to explore factors that may influence radiation damage response in oxides.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Ion irradiation damage in ilmenite at 100 K |
| Series title | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| DOI | 10.1016/S0168-583X(96)01140-8 |
| Volume | 127-128 |
| Year Published | 1997 |
| Language | English |
| Publisher | Elsevier |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| First page | 629 |
| Last page | 633 |
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