Single-ion tracks in Gd{sub 2}Zr{sub 2-x}Ti{sub x}O{sub 7} pyrochlores irradiated with swift heavy ions

Journal Article · Mon Jun 01 00:00:00 EDT 2009 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.79.224105· OSTI ID:21308699

Lang, Maik; Jiaming, Zhang; Fuxiang, Zhang; Ewing, Rodney C ^[1]; Jie, Lian ^[2]; Weber, William J ^[3]; Trautmann, Christina ^[4]

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1. Department of Geological Sciences and Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)
2. Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)
3. Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
4. GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt (Germany)

Swift xenon ions (1.43 GeV) were used to systematically investigate the radiation response of pyrochlores in the Gd{sub 2}Zr{sub 2-x}Ti{sub x}O{sub 7} binary in the electronic energy loss regime. Ion-induced structural modifications were characterized by synchrotron x-ray diffraction, Raman spectroscopy, and transmission electron microscopy. The structure of ion tracks depends on the pyrochlore composition, and the damage cross section increases with the Ti content. In general, single ion tracks consist of an amorphous track core, surrounded by a crystalline, but disordered, defect-fluorite-structured shell. That is in turn surrounded by a defect-rich pyrochlore region. The decrease in the size of these different track zones, with increasing Zr content, is a result of the enhanced radiation stability of Zr-rich pyrochlore within individual swift heavy ion tracks.

• OSTI ID: 21308699
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 79, Issue 22; Other Information: DOI: 10.1103/PhysRevB.79.224105; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CROSS SECTIONS
CRYSTAL DEFECTS
ELECTRONS
ENERGY LOSSES
ENERGY-LOSS SPECTROSCOPY
FLUORITE
GADOLINIUM COMPOUNDS
GEV RANGE 01-10
HEAVY IONS
ION BEAMS
MODIFICATIONS
PARTICLE TRACKS
PHYSICAL RADIATION EFFECTS
PYROCHLORE
RAMAN SPECTRA
RAMAN SPECTROSCOPY
STABILITY
SYNCHROTRONS
TITANATES
TRANSMISSION ELECTRON MICROSCOPY
XENON IONS
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS