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EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO<inf>2</inf>

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dc.contributor.author Rakhmatullin R.
dc.contributor.author Aminov L.
dc.contributor.author Kurkin I.
dc.contributor.author Pöppl A.
dc.date.accessioned 2018-09-18T20:11:05Z
dc.date.available 2018-09-18T20:11:05Z
dc.date.issued 2015
dc.identifier.issn 0937-9347
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/137351
dc.description.abstract © 2015, Springer-Verlag Wien. The structure and oxidation state of the Er dopant cation in CeO<inf>2</inf> 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 Er<sup>3+</sup> in cubic sites in the lattice, unusual EPR lines with g values around 14 and 20 are observed in nanocrystalline CeO<inf>2</inf>. The appearance of these lines suggests the formation of non-Kramers Er<sup>2+</sup>, Er<sup>4+</sup> 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.
dc.relation.ispartofseries Applied Magnetic Resonance
dc.title EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO<inf>2</inf>
dc.type Article
dc.relation.ispartofseries-issue 7
dc.relation.ispartofseries-volume 46
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 741
dc.source.id SCOPUS09379347-2015-46-7-SID84932199462

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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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