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dc.creatorGlais, Estelle
dc.creatorĐorđević, Vesna R.
dc.creatorPapan, Jelena
dc.creatorViana, Bruno
dc.creatorDramićanin, Miroslav
dc.date.accessioned2018-07-02T07:51:34Z
dc.date.available2018-07-02T07:51:34Z
dc.date.issued2018
dc.identifier.issn2046-2069 (print)
dc.identifier.urihttp://xlink.rsc.org/?DOI=C8RA02482K
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/7693
dc.description.abstractMgTiO3 nanoparticles doped with Mn4+, with homogeneous size ranging about 63.1 ± 9.8 nm, were synthesized by a molten salt assisted sol gel method. These nanoparticles have been investigated as optical thermal sensors. The luminescence of tetravalent manganese ion in octahedral environment within the perovskite host presents drastic variations with temperature. Three different thermometry approaches have been proposed and characterized. Two luminescence intensity ratios are studied. Firstly between the two R-lines of Mn4+ emission at low temperature (-250 °C and -90 °C) with a maximal sensitivity of 0.9% °C-1, but also secondly between 2E → 4A2 (R-line) and the 4T2 → 4A2 transitions. This allows studying the temperature variation within a larger temperature range (-200 °C to 50 °C) with a sensitivity between 0.6% °C-1 and 1.2% °C-1 over this range. The last proposed method is the study of the lifetime variation versus temperature. The effective lifetime value corresponds to a combination of transitions from two excited energy levels of the tetravalent manganese (2E and 4T2) in thermal equilibrium toward the fundamental 4A2 state. Since the more energetic transition (4T2 → 4A2) is spin-allowed, contrary to the 2E → 4A2 one, the lifetime drastically decreases with the increase in temperature leading to an impressive high sensitivity value of 4.1% °C-1 at 4 °C and an exceptional temperature resolution of 0.025 °C. According to their optical features, MgTiO3:Mn4+ nanoparticles are indeed suitable candidates for the luminescence temperature probes at the nanoscale over several temperature ranges.
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171022/RS//
dc.relationCluster of Excellence MATISSE (France)
dc.relationDGA (Direction Générale de l’Armement, France)
dc.relationBilateral project between France and Serbia (No. 36214NE – Campus France)
dc.rightsopenAccess
dc.sourceRSC Advances
dc.subjectexcited statesen
dc.subjectluminescenceen
dc.subjectmagnesium compoundsen
dc.subjectmanganeseen
dc.subjectnanoparticlesen
dc.subjectperovskiteen
dc.subjectsensitivity analysisen
dc.subjectsol-gel processen
dc.subjectsol-gelsen
dc.subjectsynthesis (chemical)en
dc.subjecttemperatureen
dc.titleMgTiO 3:Mn 4+ a multi-reading temperature nanoprobeen
dc.typearticleen
dc.rights.licenseBY-NC
dcterms.abstractВиана, Бруно; Драмићанин, Мирослав; Глаис, Естелле; Ђорђевић, Весна Р.; Папан, Јелена;
dc.rights.holder© 2018 The Royal Society of Chemistry
dc.citation.volume8
dc.citation.issue33
dc.citation.spage18341
dc.citation.epage18346
dc.identifier.wos000433428300017
dc.identifier.doi10.1039/C8RA02482K
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85047465413
dc.identifier.fulltexthttp://vinar.vin.bg.ac.rs//bitstream/id/10110/10.1039_C8RA02482K.pdf


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