Single-Ion Tracks in Gd2Zr2-xTixO7 Pyrochlores Irradiated with Swift Heavy Ions
Swift xenon ions (1.43 GeV) were used to systematically investigate the radiation response of pyrochlores in the Gd2Zr2-xTixO7 binary in the electronic energy loss regime. Ion-induced structural modifications were characterized by synchrotron x-ray diffraction, Raman spectroscopy and transmission electron microscopy. In general, individual ion tracks consist of amorphous domains (in the core of the track) and are surrounded by a crystalline, but disordered structure (track shell), and finally, by a defect-rich region (track halo). The size and structure of these concentric regions, which form dynamically in single ion tracks, depend on the chemical composition. The overall extent of the radiation damage strongly increases with Ti-content, and this confirms the enhanced radiation stability of Zr-rich pyrochlore, even within single swift heavy ion tracks.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 963177
- Report Number(s):
- PNNL-SA-63779; KC0201020; TRN: US0903123
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, 79(22):article no. 224105, Vol. 79, Issue 22
- Country of Publication:
- United States
- Language:
- English
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