Ion irradiation damage in ilmenite at 100 K
- Los Alamos National Lab., NM (United States). Materials Science and Technology Div.
- Geological Survey, Reston, VA (United States)
A natural single crystal of ilmenite (FeTiO{sub 3}) was irradiated at 100 K with 200 keV Ar{sup 2+}. Rutherford backscattering spectroscopy and ion channeling with MeV He{sup +} ions were used to monitor damage accumulation in the surface region of the implanted crystal. At an irradiation fluence of 1 {times} 10{sup 15} Ar{sup 2+} cm{sup {minus}2}, considerable near-surface He{sup +} 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 (MgTiO{sub 3}) and spinel (MgAl{sub 2}O{sub 4}) to explore factors that may influence radiation damage response in oxides.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 541863
- Report Number(s):
- LA-UR-97-2190; CONF-960994-; ON: DE97008571; TRN: 98:008384
- Resource Relation:
- Conference: IBMM `96: 10. international conference on ion beam modification of materials, Albuquerque, NM (United States), 1-6 Sep 1996; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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