Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 267, Issue 6, Pages 964-968Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2009.02.046
Keywords
Zirconia; Phase transition; High-pressure; Irradiation effect; Raman spectroscopy
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Exposing pressurized crystals to GeV heavy ions reveals unexpected structural changes. Irradiated at ambient conditions, natural zirconia (ZrO2) transforms from the monoclinic structure to its tetragonal (high-temperature) phase. For this process the required fluence must exceed 5 x 10(12) ions/cm(2) for Pb and U and becomes even significantly higher for lighter ions. If samples are pressurized during irradiation using diamond anvil cells, the required fluence drops at least by one order of magnitude. The efficiency of the monoclinic to tetragonal phase transition becomes larger with increasing pressure. (C) 2009 Elsevier B.V. All rights reserved.
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