KFU. Card publication. EPR and optical study of erbium-doped CeO2 and CeO2 / CeF3 nanoparticles

KAZAN
FEDERAL UNIVERSITY

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EPR AND OPTICAL STUDY OF ERBIUM-DOPED CEO2 AND CEO2 / CEF3 NANOPARTICLES

Form of presentation

Articles in international journals and collections

Year of publication

2024

Язык

английский

Authors, employees of KFU

Kiyamov Ayrat Gazinurovich, author

Korableva Stella Leonidovna, author

Morozov Oleg Aleksandrovich, author

Pudovkin Maksim Sergeevich, author

Rakhmatullin Rafail Mansurovich, author

Rodionov Aleksandr Aleksandrovich, author

Semashko Vadim Vladimirovich, author

Bibliographic description in the original language

M.S. Pudovkin, O.A. Morozov, S.L. Korableva, R.M. Rakhmatullin, V.V. Semashko, A.K. Ginkel, A.A. Rodionov, A.G. Kiiamov, EPR and optical study of erbium-doped CeO2 and CeO2 / CeF3 nanoparticles//Ceramics International, 50(6), 9263–9269 (2024)

Annotation

Here, the facile dry synthesis of composite CeO2/CeF3 nanoparticles doped with Er3+ probe ions using ammonium bifluoride (NH4HF2) is reported. This method allows synthesizing composite nanoparticles with different ratio of СеО2 and CeF3. The structural properties of the composite nanoparticles were studied using XRD, SEM, and TEM techniques, which confirmed the formation of composite CeO2/CeF3 nanoparticles. The luminescence spectra show that the intensity of the Ce3+ peak increases after fluorination procedure, revealing the fact that the amount of Ce3+ is increased. In particular, the total 4f-4f luminescence intensity of CeO2/CeF3:Er3+(0.1 at.%) nanoparticles is 3.5 time higher compared to CeO2:Er3+(0.1 at.%) ones under both UV or resonant pumping. Probably it can be associated with the increased concentration of trivalent rare-earth ions in a cubic-distorted environment. The same tendency is observed for the excitation spectra. EPR measurements showed that fluorination of CeO2 nanoparticles doped with different concentration of Er3+ ions leads to the formation of trigonal sites in ceria nanoparticles.

Keywords

CeO2, CeF3, Nanocomposites, EPR

The name of the journal

Ceramics International

URL

https://www.sciencedirect.com/science/article/abs/pii/S0272884223041767

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=304608&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kiyamov Ayrat Gazinurovich	ru_RU
dc.contributor.author	Korableva Stella Leonidovna	ru_RU
dc.contributor.author	Morozov Oleg Aleksandrovich	ru_RU
dc.contributor.author	Pudovkin Maksim Sergeevich	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Rodionov Aleksandr Aleksandrovich	ru_RU
dc.contributor.author	Semashko Vadim Vladimirovich	ru_RU
dc.date.accessioned	2024-01-01T00:00:00Z	ru_RU
dc.date.available	2024-01-01T00:00:00Z	ru_RU
dc.date.issued	2024	ru_RU
dc.identifier.citation	M.S. Pudovkin, O.A. Morozov, S.L. Korableva, R.M. Rakhmatullin, V.V. Semashko, A.K. Ginkel, A.A. Rodionov, A.G. Kiiamov, EPR and optical study of erbium-doped CeO2 and CeO2 / CeF3 nanoparticles//Ceramics International, 50(6), 9263–9269 (2024)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=304608&p_lang=2	ru_RU
dc.description.abstract	Ceramics International	ru_RU
dc.description.abstract	Here, the facile dry synthesis of composite CeO2/CeF3 nanoparticles doped with Er3+ probe ions using ammonium bifluoride (NH4HF2) is reported. This method allows synthesizing composite nanoparticles with different ratio of СеО2 and CeF3. The structural properties of the composite nanoparticles were studied using XRD, SEM, and TEM techniques, which confirmed the formation of composite CeO2/CeF3 nanoparticles. The luminescence spectra show that the intensity of the Ce3+ peak increases after fluorination procedure, revealing the fact that the amount of Ce3+ is increased. In particular, the total 4f-4f luminescence intensity of CeO2/CeF3:Er3+(0.1 at.%) nanoparticles is 3.5 time higher compared to CeO2:Er3+(0.1 at.%) ones under both UV or resonant pumping. Probably it can be associated with the increased concentration of trivalent rare-earth ions in a cubic-distorted environment. The same tendency is observed for the excitation spectra. EPR measurements showed that fluorination of CeO2 nanoparticles doped with different concentration of Er3+ ions leads to the formation of trigonal sites in ceria nanoparticles.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	CeO2	ru_RU
dc.subject	CeF3	ru_RU
dc.subject	Nanocomposites	ru_RU
dc.subject	EPR	ru_RU
dc.title	EPR and optical study of erbium-doped CeO2 and CeO2 / CeF3 nanoparticles	ru_RU
dc.type	Articles in international journals and collections	ru_RU