KFU. Card publication. EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO2

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EPR EVIDENCE OF UNUSUAL DOPANT VALENCY STATES IN NANOCRYSTALLINE ER-DOPED CEO2

Form of presentation

Articles in international journals and collections

Year of publication

2015

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Authors, employees of KFU

Aminov Linar Kashifovich, author

Kurkin Igor Nikolaevich, author

Rakhmatullin Rafail Mansurovich, author

Other authors

Poppl Andreas net, author

Bibliographic description in the original language

R. M. Rakhmatullin, L. K. Aminov, I. N. Kurkin, A. Pöppl EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO2 Applied Magnetic Resonance, 2015, Volume 46, Issue 7, pp 741-748

Annotation

The structure and oxidation state of the Er dopant cation in CeO2 single crystal and nanocrystals with size ranging from 22 to 300 nm are studied using electron paramagnetic resonance (EPR) spectroscopy at X- and at Q-band near liquid-He temperatures. Besides the expected EPR line due to Er3+ in cubic sites in the lattice, unusual EPR lines with g values around 14 and 20 are observed in nanocrystalline CeO2. The appearance of these lines suggests the formation of non-Kramers Er2+, Er4+ ions, which becomes increasing favorable with decreasing nanoparticle size. Formation of rare earth ions with such unusual oxidation states in nanoparticles can be exploited in tuning their catalytic activity and optical properties.

Keywords

EPR, nanocrystalline ceria, rare earth ions, non-Kramers ions

The name of the journal

APPL MAGN RESON

URL

http://link.springer.com/article/10.1007/s00723-015-0676-1

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

https://repository.kpfu.ru/eng/?p_id=110342&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Aminov Linar Kashifovich	ru_RU
dc.contributor.author	Aminov Linar Kashifovich	ru_RU
dc.contributor.author	Kurkin Igor Nikolaevich	ru_RU
dc.contributor.author	Kurkin Igor Nikolaevich	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Poppl Andreas net	ru_RU
dc.date.accessioned	2015-01-01T00:00:00Z	ru_RU
dc.date.available	2015-01-01T00:00:00Z	ru_RU
dc.date.issued	2015	ru_RU
dc.identifier.citation	R. M. Rakhmatullin, L. K. Aminov, I. N. Kurkin, A. Pöppl EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO2 Applied Magnetic Resonance, 2015, Volume 46, Issue 7, pp 741-748	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=110342&p_lang=2	ru_RU
dc.description.abstract	APPL MAGN RESON	ru_RU
dc.description.abstract	The structure and oxidation state of the Er dopant cation in CeO2 single crystal and nanocrystals with size ranging from 22 to 300 nm are studied using electron paramagnetic resonance (EPR) spectroscopy at X- and at Q-band near liquid-He temperatures. Besides the expected EPR line due to Er3+ in cubic sites in the lattice, unusual EPR lines with g values around 14 and 20 are observed in nanocrystalline CeO2. The appearance of these lines suggests the formation of non-Kramers Er2+, Er4+ ions, which becomes increasing favorable with decreasing nanoparticle size. Formation of rare earth ions with such unusual oxidation states in nanoparticles can be exploited in tuning their catalytic activity and optical properties.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	EPR	ru_RU
dc.subject	nanocrystalline ceria	ru_RU
dc.subject	rare earth ions	ru_RU
dc.subject	non-Kramers ions	ru_RU
dc.title	EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO2	ru_RU
dc.type	Articles in international journals and collections	ru_RU