Current studentsExisting staffContact us
 

Photoluminescence properties of X-ray generated divalent Sm in mechanochemically prepared nanocrystalline CaF₂:Sm³⁺

Simple item page
dc.contributor.authorRozaila, Z.S.
dc.contributor.authorRiesen, N.
dc.contributor.authorRiesen, H.
dc.date.issued2024
dc.description.abstractIn this study, the mechanochemical preparation of nanocrystalline CaF2:Sm3+ by ball milling calcium acetate hydrate, samarium (III) acetate hydrate, and ammonium fluoride is reported. The photoluminescence of the as-prepared CaF2:Sm3+ shows predominantly Sm3+ 4G5/2 -> 6HJ(J = 5/2, 7/2, 9/2, and 11/2) f-f luminescence, but intense electric dipole allowed 4f55d (T1u) -> 4f6 7F1 (T1g) luminescence by Sm2+ was generated upon X-irradiation. In comparison with the co-precipitated CaF2:Sm3+, the conversion of Sm3+ -> Sm2+ in the ball-milled sample upon X-irradiation is significantly lower. Importantly, the present results indicate that the crystallite size and X-ray storage phosphor properties of the lanthanide-doped nanocrystalline CaF2 can be modified by adjusting the ball milling time, dopant concentration and post-annealing treatment, yielding crystallite sizes as low as 6 nm under specific experimental conditions.
dc.identifier.citationInorganics, 2024; 12(12, article no. 332):1-11
dc.identifier.doi10.3390/inorganics12120332
dc.identifier.issn2304-6740
dc.identifier.issn2304-6740
dc.identifier.orcidRiesen, N. [0000-0002-6803-0666]
dc.identifier.urihttps://hdl.handle.net/11541.2/41471
dc.language.isoen
dc.publisherMDPIAG
dc.relation.fundingUNSW International Postgraduate Award
dc.rightsCopyright 2024 The author(s) (https://creativecommons.org/licenses/by/4.0/) Access Condition Notes: This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license
dc.source.urihttps://doi.org/10.3390/inorganics12120332
dc.subjectball milling
dc.subjectdopant concentration
dc.subjectpost-annealing treatment
dc.subjectcalcium fluoride
dc.subjectsamarium
dc.titlePhotoluminescence properties of X-ray generated divalent Sm in mechanochemically prepared nanocrystalline CaF₂:Sm³⁺
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916927222101831

Files

Collections