Swift heavy ion irradiation-induced microstructure modification on two delta-phase oxides: Sc4Zr3O12 and Lu4Zr3O12
- Los Alamos National Laboratory
- AUSTRALIA
- INDIA
Swift gold ions (185 MeV) were used to systematically investigate the radiation damage response of delta phase compounds Sc{sub 4}Zr{sub 3}O{sub 12} and Lu{sub 4}Zr{sub 3}O{sub 12} in the electronic energy loss regime. Ion irradiation-induced microstructural modifications were examined using X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD investigations indicate a phase transformation from ordered rhombohedral to disordered fluorite (O-D) in both compounds, with the Sc compound transforming at a higher ion fluence compared with the Lu compound. This result is consistent with our previous study on Sc{sub 4}Zr{sub 3}O{sub 12} and Lu{sub 4}Zr{sub 3}O{sub 12} under displacive radiation environment in which the nuclear energy loss is dominant. High resolution TEM revealed that individual ion tracks maintains crystalline structure where the core region experiences an O-D phase transformation. TEM observation also suggests that the O-D phase transformation occurs through the ion range after overlapping of ion tracks.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 992221
- Report Number(s):
- LA-UR-09-05561; LA-UR-09-5561; TRN: US201022%%207
- Resource Relation:
- Journal Volume: 268; Journal Issue: 19; Conference: 15th International Conference on Radiation Effects in Insulators ; August 30, 2009 ; Padova, Italy
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multi-scale investigation of heterogeneous swift heavy ion tracks in stannate pyrochlore
Order-to-disorder phase transformation in ion irradiated uranium-bearing delta-phase oxides RE{sub 6}U{sub 1}O{sub 12} (RE=Y, Gd, Ho, Yb, and Lu)