dc.contributor.author
Gilson, Sara E.
dc.contributor.author
Svitlyk, Volodymyr
dc.contributor.author
Bukaemskiy, Andrey A.
dc.contributor.author
Niessen, Jonas
dc.contributor.author
Lender, Theresa
dc.contributor.author
Murphy, Gabriel L.
dc.contributor.author
Henkes, Maximilian
dc.contributor.author
Lippold, Holger
dc.contributor.author
Marquardt, Julien
dc.contributor.author
Huittinen, Nina
dc.date.accessioned
2024-09-11T11:34:52Z
dc.date.available
2024-09-11T11:34:52Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/44904
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-44614
dc.description.abstract
Ceramics and single crystals of LaPO4 monazite doped with Eu(III) were irradiated with 14 MeV Au5+ ions at three different fluences. Changes to crystallinity, local coordination environments, and topography were probed using grazing-incidence X-ray diffraction (GIXRD), vertical scanning interferometry (VSI), scanning electron microscopy (SEM), Raman, and luminescence spectroscopy. GIXRD data of the ceramics revealed fluence dependent amorphization. A similar level of amorphization was detected for samples irradiated with 5 × 1013 ions/cm2 and 1 × 1014 ions/cm2, whereas the sample irradiated with the highest fluence of 1 × 1015 ions/cm2 appeared slightly less amorphous. VSI showed clear swelling of entire grains at the highest ion fluence, while more localized damage to grain boundaries was detected for ceramic samples irradiated at the lowest fluence. Single crystal specimens showed no pronounced topography changes following irradiation. SEM images of the ceramic irradiated at the highest fluence showed topological features indicative of grain surface melting. Raman and luminescence data showed a different degree of disorder in polycrystalline vs. single crystal samples. While changes to PO4 vibrational modes were observed in the ceramics, changes were more subtle or not present in the single crystals. The opposite was observed when probing the local Ln-O environment using Eu(III) luminescence, where the larger changes in terms of an elongation of the Eu-O (or La-O) bond and an increasing relative disorder with increasing fluence were observed only for the single crystals. The dissimilar trends observed in irradiated single crystals and ceramics indicate that grain boundary chemistry likely plays a significant role in the radiation response.
en
dc.format.extent
11 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Materials for energy and catalysis
en
dc.subject
Mechanical properties
en
dc.subject
grain boundary chemistry
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.title
Microstructural investigation of Au ion-irradiated Eu-doped LaPO4 ceramics and single crystals
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
83
dcterms.bibliographicCitation.doi
10.1038/s41529-024-00504-3
dcterms.bibliographicCitation.journaltitle
npj Materials Degradation
dcterms.bibliographicCitation.number
1
dcterms.bibliographicCitation.volume
8
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41529-024-00504-3
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie
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refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2397-2106
refubium.resourceType.provider
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