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Raman spectra analysis of ZrO 2 thermally grown on Zircaloy substrates irradiated with heavy ion: Effects of oxygen isotopic substitution
Author(s) -
Ciszak Clément,
Mermoux Michel,
Gutierrez Gaëlle,
Leprêtre Frédéric,
Duriez Christian,
Popa Ioana,
Fayette Laurent,
Chevalier Sébastien
Publication year - 2019
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5513
Subject(s) - raman spectroscopy , materials science , irradiation , cubic zirconia , fluence , zirconium , analytical chemistry (journal) , oxygen , zirconium alloy , ion , radiochemistry , chemistry , ceramic , metallurgy , optics , nuclear physics , physics , organic chemistry , chromatography
Recently, unusual Raman signals were observed in different works conducted on thin zirconia layers grown on zirconium alloys simulating in‐reactor materials after high fluence ion irradiation or for samples cut from fuel rods irradiated in nuclear plants. As such, these spectra clearly do not correspond to any known spectrum of a pure standard zirconia phase. Therefore, the analysis conducted in this paper aims to provide a better understanding of these peculiar Raman features. For that purpose, specific ion‐irradiated samples were analysed. In situ Raman spectroscopy was first used to follow the irradiation process. Then, samples were characterized using different excitation wavelengths. Finally, the effects of oxygen isotopic substitution were examined in details. Results are discussed in terms of disorder and size‐related effects.