КФУ. Карточка публикации. 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

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2015

Язык

английский

Авторы, сотрудники КФУ

Аминов Линар Кашифович, автор

Куркин Игорь Николаевич, автор

Рахматуллин Рафаиль Мансурович, автор

Другие авторы

Poppl Andreas нет, автор

Библиографическое описание на языке оригинала

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

Аннотация

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.

Ключевые слова

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

Название журнала

APPL MAGN RESON

URL

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

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https://repository.kpfu.ru/?p_id=110342

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Аминов Линар Кашифович	ru_RU
dc.contributor.author	Аминов Линар Кашифович	ru_RU
dc.contributor.author	Куркин Игорь Николаевич	ru_RU
dc.contributor.author	Куркин Игорь Николаевич	ru_RU
dc.contributor.author	Рахматуллин Рафаиль Мансурович	ru_RU
dc.contributor.author	Рахматуллин Рафаиль Мансурович	ru_RU
dc.contributor.author	Рахматуллин Рафаиль Мансурович	ru_RU
dc.contributor.author	Poppl Andreas нет	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/?p_id=110342	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	Статьи в зарубежных журналах и сборниках	ru_RU