Anomalous heating rate response of beta irradiated Sm3+ and Tb3+ doped BaAl2O4 phosphors

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dc.authoridOglakci, Mehmet/0000-0003-1096-5087
dc.authoridBalci, sumeyra/0000-0003-3463-6923
dc.authoridBenourdja, Saadia/0000-0002-4838-7975
dc.authoridKaynar, Umit H./0000-0002-3321-0341
dc.authoridDogan, Tamer/0000-0002-0633-8470
dc.authoridTopaksu, Mustafa/0000-0002-0231-6813
dc.contributor.authorKaynar, U. H.
dc.contributor.authorGuvener, E.
dc.contributor.authorAyvacikli, M.
dc.contributor.authorDogan, T.
dc.contributor.authorBalci-Yegen, S.
dc.contributor.authorOglakci, M.
dc.contributor.authorTopaksu, M.
dc.date.accessioned2024-11-07T13:34:51Z
dc.date.available2024-11-07T13:34:51Z
dc.date.issued2018
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThe stuffed derivative of the tridymite structure, the oxide BaAl2O4 has been regarded as a long persistent phosphor. Thermoluminescence (TL) glow curve peaks of thin pellet samples of undoped and, Sm3+ and Tb3+ doped BaAl2O4 prepared by combustion method was reported. The structure of the compounds was monitored by X-ray diffraction and found a single-phase compound with a hexagonal structure. Performing a series of TL measurements for the temperature range from room temperature to 400 degrees C, the effect of beta radiation dose on TL response, various TL heating rate (HR) properties of undoped and Sm3+ and Tb3+ doped BaAl2O4 phosphors were investigated. Peak shape method was also utilized to assess the trap parameters. The activation energy of the main peak at 128 degrees C was found to be 0.97 eV. TL glow curves obtained from undoped and Tb3+ doped BaAl2O4 decrease with increasing HR value (varying from 0.5 to 15 degrees C s(-1)) in a way matching with thermal quenching effect. Contrary to expectations, anomalous HR dependence was observed on Sm3+ doped BaAl2O4 sample and a semi-localized transition model has been used in order to explain such behaviour. (C) 2018 Elsevier B.V. All rights reserved.
dc.description.sponsorshipCommission of Scientific Research Projects of Cukurova University [FAY 2015-4735]
dc.description.sponsorshipThis work was supported by the Commission of Scientific Research Projects of Cukurova University, Project number FAY 2015-4735.
dc.identifier.doi10.1016/j.jallcom.2018.06.125
dc.identifier.endpage529
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-85048581500
dc.identifier.scopusqualityQ1
dc.identifier.startpage523
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2018.06.125
dc.identifier.urihttps://hdl.handle.net/11480/16200
dc.identifier.volume764
dc.identifier.wosWOS:000444058300064
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectBaAl2O4
dc.subjectRare earth
dc.subjectAnomalous heating rate
dc.subjectThermoluminescence
dc.titleAnomalous heating rate response of beta irradiated Sm3+ and Tb3+ doped BaAl2O4 phosphors
dc.typeArticle

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