Optical spectroscopy study of modifications induced in cerium dioxide by electron and ion irradiations

Costantini, Jean Marc; Gutierrez, G.; Watanabe, Hideo; Yasuda, Kazuhiro; Takaki, Seiya; Lelong, Gérald; Guillaumet, Maxime; Weber, William J.

doi:10.1080/14786435.2019.1599145

Cited by 10 publications

(6 citation statements)

References 43 publications

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“…Both XAS and XPS are valuable characterization tools for CeO 2 due to its tendency to chemically reduce under highly ionizing irradiation. Raman spectroscopy reveals the impact of defects on correlated atomic vibrations [38,50,56]. Structural modifications in fluorite-structured materials lead to a breakdown of selection rules and the appearance of so-called Raman forbidden modes in the spectra.…”

Section: Characterizationmentioning

confidence: 99%

Review of Swift Heavy Ion Irradiation Effects in CeO2

Cureton

Tracy

Lang

2021

QuBS

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Cerium dioxide (CeO2) exhibits complex behavior when irradiated with swift heavy ions. Modifications to this material originate from the production of atomic-scale defects, which accumulate and induce changes to the microstructure, chemistry, and material properties. As such, characterizing its radiation response requires a wide range of complementary characterization techniques to elucidate the defect formation and stability over multiple length scales, such as X-ray and neutron scattering, optical spectroscopy, and electron microscopy. In this article, recent experimental efforts are reviewed in order to holistically assess the current understanding and knowledge gaps regarding the underlying physical mechanisms that dictate the response of CeO2 and related materials to irradiation with swift heavy ions. The recent application of novel experimental techniques has provided additional insight into the structural and chemical behavior of irradiation-induced defects, from the local, atomic-scale arrangement to the long-range structure. However, future work must carefully account for the influence of experimental conditions, with respect to both sample properties (e.g., grain size and impurity content) and ion-beam parameters (e.g., ion mass and energy), to facilitate a more direct comparison of experimental results.

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Section: Characterizationmentioning

confidence: 99%

Review of Swift Heavy Ion Irradiation Effects in CeO2

Cureton

Tracy

Lang

2021

QuBS

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“…Regarding ceria, among several experimental techniques, such as transmission electron microscopy (TEM) [16][17], scanning transmission electron microscopy (STEM) [18], and various spectroscopies, such as electron paramagnetic resonance (EPR) spectroscopy [19] and UV-visible absorption or reflection spectroscopy [14,20], were applied to study the point defects produced 4 after electron or ion irradiations. These results have revealed the formation of Ce 3+ ions after irradiation.…”

Section: Introductionmentioning

confidence: 99%

Cathodoluminescence of cerium dioxide: Combined effects of the electron beam energy and sample temperature

Costantini

Seo

Yasuda

et al. 2020

Journal of Luminescence

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“…The estimated probed depth of d ~ 2.3 μm in CeO 2 by Raman spectroscopy relies on the absorbance at RT of a 1‐μm thick epitaxial film at the wavelength of 532 nm, for 63% attenuation of the scattered light. [ 19 ] However, this value is definitely overestimated owing to light scattering at grain boundaries of the sintered samples. This means that mainly the topmost part of the irradiated depth was probed.…”

Section: Resultsmentioning

confidence: 99%

“…[ 25 ] This yields a probed depth of d = 1/ α ~ 3.6 mm, for 63% attenuation of the scattered light, which means that the whole sample thickness was probed in that case. The difference in probed depths for the photon energy of ħω = 2.33 eV lies in the difference in optical gap of ~4.2 eV [ 25 ] and ~3.2 eV, [ 19,22 ] respectively, and Urbach edge for YSZ and CeO 2 . The estimate of the probed depth by Raman spectroscopy in CeO 2 is marked by a vertical line in the depth profiles (Figure 1).…”

Section: Resultsmentioning

confidence: 99%

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

Costantini

Gutierrez

Lelong

et al. 2022

J Raman Spectroscopy

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Raman scattering is applied to probe the radiation damage in swift heavy ionirradiated ceramics, namely zirconium nitride (ZrN), ceria (CeO 2 ), and yttriastabilized zirconia (ZrO 2 : Y, or YSZ) for about the same high electronic stopping power of heavy ions. Raman spectra show that these ceramics are radiationresistant materials that are not amorphized by such irradiations even for large ion track overlap at high fluences. However, for ZrN, the increase of the TA/LA and TO/LO band intensities versus fluence is evidenced after 100-MeV Xe ion irradiation up to a saturation for the fluence of 3 Â 10 12 cm À2 . The band growths are ascribed to the increase of the concentration of Zr and N vacancies induced by electronic excitations inside tracks. However, the diffuse reflectance spectra do not exhibit any clear modifications of the electronic structure. For ceria, the decrease and broadening of the main F 2g peak of the fluorite-like structure and the growth of a broad defect band assigned to oxygen vacancy formation is observed versus fluence up to 10 14 cm À2 for 200-MeV Xe ion irradiation. For YSZ, Raman spectra mainly give evidence of the intrinsic lattice disorder due to the native oxygen vacancies even up to high fluences of about 3 Â 10 13 cm À2 for 200-MeV I and 200-MeV Au ion irradiation. Results are discussed on the basis of the interplay between the native structural disorder and the radiation-induced disorder by electronic excitations in these three materials.

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Optical spectroscopy study of modifications induced in cerium dioxide by electron and ion irradiations

Cited by 10 publications

References 43 publications

Review of Swift Heavy Ion Irradiation Effects in CeO2

Review of Swift Heavy Ion Irradiation Effects in CeO2

Cathodoluminescence of cerium dioxide: Combined effects of the electron beam energy and sample temperature

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

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