Damage creation threshold of Al2O3 under swift heavy ion irradiation

Khalfaoui, N.; Stoquert, J.P.; Haas, F.; Traumann, C.; Meftah, A.; Toulemonde, M.

doi:10.1016/j.nimb.2011.11.047

Cited by 31 publications

(27 citation statements)

References 40 publications

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“…Therefore the track re-crystallization has only a minor effect. New measurements by Khalfaoui et al [12] and Skuratov et al [13] confirm our estimate for Al 2 O 3 .…”

Section: Discussionsupporting

confidence: 88%

Uniform behavior of insulators irradiated by swift heavy ions

Szenes

2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…Therefore the track re-crystallization has only a minor effect. New measurements by Khalfaoui et al [12] and Skuratov et al [13] confirm our estimate for Al 2 O 3 .…”

Section: Discussionsupporting

confidence: 88%

Uniform behavior of insulators irradiated by swift heavy ions

Szenes

2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…Several experimental techniques can be used to gather information on the electronic stopping power threshold or the size of the region damaged by irradiation like Rutherford backscattering spectrometry in channeling geometry [27,28], atomic force microscopy [29,30], profilometry [31], X-ray diffraction [32], Mössbauer spectroscopy [33], transmission electron microscopy [34,35]. Their results are most often partial and require indirect interpretation based on models with exception of transmission electron microscopy (TEM) that provides a direct access to morphological and structural information to the micro-to atom scale.…”

Section: Introductionmentioning

confidence: 99%

Effects of Kr and Xe ion irradiation on the structure of Y₂O₃ nanoprecipitates in YBCO thin film conductors

Suvorova

Уваров

Овчаров

et al. 2018

Philosophical Magazine

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The response of Y 2 O 3 nanoprecipitates in a 1-µm YBa 2 Cu 3 O 7-x layer from a superconducting wire Ag/YBCO/buffer metal oxides/Hastelloy to 107 MeV Kr and 167 MeV Xe ion irradiation was investigated using a combination of transmission electron microscopy, diffraction and X-ray energy dispersive spectrometry. The direct observation of the radiation induced tracks in Y 2 O 3 nanocrystals is reported for the first time to the best authors' knowledge. Structureless damaged regions of 5-9 nm (average 8 nm) in diameter were observed in Y 2 O 3 nanocrystals when the electronic stopping power S e was about or higher than 4.7 keV/nm. This value of S e is the upper estimate of the minimum electronic stopping power to create damage in yttria nanocrystals. The electron diffraction patterns and HRTEM/HRSTEM Fourier transform patterns from areas extending a few nanometers around the tracks show that yttria and YBCO keep their respective cubic and orthorhombic pristine structures.

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“…Al 2 O 3 exhibits material disordering and an easy amorphization at the surface since S e is above the threshold value S eth [2,[16][17][18][19][20][21][22][23][24][25]. Moreover, additional structural effects are independently reported in the literature, such as different sensitivities to disorder of O or Al sublattices [26], swelling [27], lattice deformation [28][29][30], or a complex track structure along the ion path [25,31].…”

Section: Introductionmentioning

confidence: 99%

“…With monoatomic ions, in the single impact regime, i. e. at low fluence without significant ion track overlapping, tracks are not fully amorphous. In this regime, a S eth for track generation necessarily refers to a threshold for a specific observed damage, and consequently may vary depending on the observations made, i. e. the TEM observations of changes along the ion track may provide a different threshold than the one by AFM observation of surface nanodots [20,25,27]. Full amorphization can be triggered with monoatomic ions only at high fluences, due to track overlapping, starting at the surface [18,22].…”

Section: Introductionmentioning

confidence: 99%

In-situ kinetics of modifications induced by swift heavy ions in Al2O3: Colour centre formation, structural modification and amorphization

et al. 2017

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This paper details in-situ studies of modifications induced by swift heavy ion irradiation in -Al 2 O 3 . This complex behaviour is intermediary between the behaviour of amorphizable and non-amorphizable materials, respectively. A unique combination of irradiation experiments was performed at the IRRSUD beam line of the GANIL facility, with three different characterisation techniques: in-situ UV-Vis absorption, in-situ grazing incidence X-Ray diffraction and ex-situ transmission electron microscopy. This allows a complete study of point defects, and by depth profile of structural and microstructural modifications created on the trajectory of the incident ion. The -Al 2 O 3 crystals have been irradiated by 92 MeV Xenon and 74 MeV Krypton ions, the irradiation conditions have been chosen rather similar with an energy range where the ratio between electronic and nuclear stopping power changes dramatically as function of depth penetration. The main contribution of electronic excitation, above the threshold for track formation, is present beneath the surface to finally get almost only elastic collisions at the end of the projected range. Amorphization kinetics by the overlapping of multiple ion tracks is observed. In the crystalline matrix, long range strains, unit-cell swelling, local microstrain, domain size decrease, disordering of oxygen sublattice as well as colour centre formation are found. This study highlights the relationship between ion energy losses into a material and its response. While amorphization requires electronic stopping values above a certain threshold, point defects are predominantly induced by elastic collisions, while some structural modifications of the crystalline matrix, such as unit-cell swelling, are due to a contribution of both electronic and nuclear processes.

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Damage creation threshold of Al2O3 under swift heavy ion irradiation

Cited by 31 publications

References 40 publications

Uniform behavior of insulators irradiated by swift heavy ions

Uniform behavior of insulators irradiated by swift heavy ions

Effects of Kr and Xe ion irradiation on the structure of Y₂O₃ nanoprecipitates in YBCO thin film conductors

In-situ kinetics of modifications induced by swift heavy ions in Al2O3: Colour centre formation, structural modification and amorphization

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Damage creation threshold of Al2O3 under swift heavy ion irradiation

Cited by 31 publications

References 40 publications

Uniform behavior of insulators irradiated by swift heavy ions

Uniform behavior of insulators irradiated by swift heavy ions

Effects of Kr and Xe ion irradiation on the structure of Y2O3 nanoprecipitates in YBCO thin film conductors

In-situ kinetics of modifications induced by swift heavy ions in Al2O3: Colour centre formation, structural modification and amorphization

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Effects of Kr and Xe ion irradiation on the structure of Y₂O₃ nanoprecipitates in YBCO thin film conductors