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Electron paramagnetic resonance linewidth narrowing of Gd3+ ions in Y-doped ceria nanocrystals with decreasing crystallite size

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dc.contributor.author Rakhmatullin R.
dc.contributor.author Aminov L.
dc.contributor.author Kurkin I.
dc.contributor.author Böttcher R.
dc.contributor.author Pöppl A.
dc.contributor.author Avila-Paredes H.
dc.contributor.author Kim S.
dc.contributor.author Sen S.
dc.date.accessioned 2018-09-18T20:04:51Z
dc.date.available 2018-09-18T20:04:51Z
dc.date.issued 2009
dc.identifier.issn 0021-9606
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/136312
dc.description.abstract Electron paramagnetic resonance (EPR) spectra of Gd3+ ions in crystalline Ce1-x-y Gdx Yy O2- [0.5* (x+y)] (x=0.0025, y=0.10, and 0.25) with crystallite sizes ranging from 600 nm down to 5 nm have been measured at X -band and at Q -band near liquid He and room temperatures. The EPR line shape is controlled by the low-symmetry surrounding of Gd3+ ions in a coordination environment with one oxygen-vacancy and seven oxygen nearest-neighbors forming GdO7 polyhedra. These coordination polyhedra are characterized by a wide distribution of crystal field parameters that primarily controls the EPR linewidth. The EPR linewidth of the central (- 1 2 + 1 2) transition is observed to decrease systematically with decreasing crystallite size. This observation implies that the size of the crystallites in the nanoregime may have important influence on the energetics of vacancy distribution in crystalline materials. © 2009 American Institute of Physics.
dc.relation.ispartofseries Journal of Chemical Physics
dc.title Electron paramagnetic resonance linewidth narrowing of Gd3+ ions in Y-doped ceria nanocrystals with decreasing crystallite size
dc.type Article
dc.relation.ispartofseries-issue 12
dc.relation.ispartofseries-volume 131
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00219606-2009-131-12-SID70349619759


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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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