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Physical Background for Luminescence Thermometry Sensors Based on Pr<sup>3+</sup>:LaF<inf>3</inf> Crystalline Particles

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dc.contributor.author Pudovkin M.
dc.contributor.author Morozov O.
dc.contributor.author Pavlov V.
dc.contributor.author Korableva S.
dc.contributor.author Lukinova E.
dc.contributor.author Osin Y.
dc.contributor.author Evtugyn V.
dc.contributor.author Safiullin R.
dc.contributor.author Semashko V.
dc.date.accessioned 2018-04-05T07:09:56Z
dc.date.available 2018-04-05T07:09:56Z
dc.date.issued 2017
dc.identifier.issn 1687-4110
dc.identifier.uri http://dspace.kpfu.ru/xmlui/handle/net/130075
dc.description.abstract © 2017 Maksim S. Pudovkin et al. The main goal of this study was creating multifunctional nanoparticles based on rare-earth doped LaF 3 nanocrystals, which can be used as fluorescence thermal sensors operating over the 80-320 K temperature range including physiological temperature range (10-50°C). The Pr 3+ :LaF 3 (CPr = 1%) microcrystalline powder and the Pr 3+ :LaF 3 (CPr = 12%, 20%) nanoparticles were studied. It was proved that all the samples were capable of thermal sensing into the temperature range from 80 to 320 K. It was revealed that the mechanisms of temperature sensitivity for the microcrystalline powder and the nanoparticles are different. In the powder, the 3 P 1 and 3 P 0 states of Pr 3+ ion share their electronic populations according to the Boltzmann and thermalization of the 3 P 1 state takes place. In the nanoparticles, two temperature dependent mechanisms were suggested: energy migration within 3 P 0 state in the temperature range from 80 K to 200 K followed by quenching of 3 P 0 state by OH groups at higher temperatures. The values of the relative sensitivities for the Pr 3+ :LaF 3 (CPr = 1%) microcrystalline powder and the Pr 3+ :LaF 3 (CPr = 12%, 20%) nanoparticles into the physiological temperature range (at 45°C) were 1, 0.5, and 0.3% °C -1 , respectively.
dc.relation.ispartofseries Journal of Nanomaterials
dc.title Physical Background for Luminescence Thermometry Sensors Based on Pr<sup>3+</sup>:LaF<inf>3</inf> Crystalline Particles
dc.type Article
dc.relation.ispartofseries-volume 2017
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS16874110-2017-2017-SID85031898796


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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