KFU. Card publication. EPR study of ceria nanoparticles containing different concentration of Ce3+ions

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FEDERAL UNIVERSITY

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EPR STUDY OF CERIA NANOPARTICLES CONTAINING DIFFERENT CONCENTRATION OF CE3+IONS

Form of presentation

Articles in international journals and collections

Year of publication

2018

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Authors, employees of KFU

Kiyamov Ayrat Gazinurovich, author

Rakhmatullin Rafail Mansurovich, author

Rodionov Aleksandr Aleksandrovich, author

Semashko Vadim Vladimirovich, author

Bibliographic description in the original language

Rakhmatullin R.M, Semashko V.V, Korableva S.L, EPR study of ceria nanoparticles containing different concentration of Ce3+ions//Materials Chemistry and Physics. - 2018. - Vol.219, Is.. - P.251-257.

Annotation

The electron paramagnetic resonance of Ce3+ ions in ceria is a rather controversial issue. In this report we analyze the EPR line with g ∼1.97 in the absorption spectra of ceria powders, which has been assigned in many studies to Ce3+ ions. Such an assignment is not in agreement with the experimental data nor with the theory of spin-lattice relaxation of rare earth ions in solids. Our statement is supported by our experimental results based on EPR spectroscopy of nanocrystalline ceria, synthesized in various ways, as well as by magnetization measurements of as-prepared and vacuum-annealed ceria nanoparticles. The possible model of the paramagnetic center, which is assigned to the EPR line with g ∼1.97 in ceria, is an electron trapped near the surface Ce3+/Ce4+ redox pair.

Keywords

Nanoparticles, Ceria, Electron paramagnetic resonance, Room temperature ferromagnetism, Spin-lattice relaxation

The name of the journal

Materials Chemistry and Physics

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053056106&doi=10.1016%2fj.matchemphys.2018.08.028&partnerID=40&md5=e277940ba0e5be34b3e6ae5b7b096e79

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

https://repository.kpfu.ru/eng/?p_id=185121&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kiyamov Ayrat Gazinurovich	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	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	Rakhmatullin R.M, Semashko V.V, Korableva S.L, EPR study of ceria nanoparticles containing different concentration of Ce3+ions//Materials Chemistry and Physics. - 2018. - Vol.219, Is.. - P.251-257.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=185121&p_lang=2	ru_RU
dc.description.abstract	Materials Chemistry and Physics	ru_RU
dc.description.abstract	The electron paramagnetic resonance of Ce3+ ions in ceria is a rather controversial issue. In this report we analyze the EPR line with g ∼1.97 in the absorption spectra of ceria powders, which has been assigned in many studies to Ce3+ ions. Such an assignment is not in agreement with the experimental data nor with the theory of spin-lattice relaxation of rare earth ions in solids. Our statement is supported by our experimental results based on EPR spectroscopy of nanocrystalline ceria, synthesized in various ways, as well as by magnetization measurements of as-prepared and vacuum-annealed ceria nanoparticles. The possible model of the paramagnetic center, which is assigned to the EPR line with g ∼1.97 in ceria, is an electron trapped near the surface Ce3+/Ce4+ redox pair.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Nanoparticles	ru_RU
dc.subject	Ceria	ru_RU
dc.subject	Electron paramagnetic resonance	ru_RU
dc.subject	Room temperature ferromagnetism	ru_RU
dc.subject	Spin-lattice relaxation	ru_RU
dc.title	EPR study of ceria nanoparticles containing different concentration of Ce3+ions	ru_RU
dc.type	Articles in international journals and collections	ru_RU