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EPR study of the CaF2 powder mechanochemical doping with rare-earth ions

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dc.contributor.author Irisova I.
dc.contributor.author Rodionov A.
dc.contributor.author Tayurskii D.
dc.contributor.author Yusupov R.
dc.date.accessioned 2018-09-18T20:35:42Z
dc.date.available 2018-09-18T20:35:42Z
dc.date.issued 2013
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/141498
dc.description.abstract In the present work we show with electron paramagnetic resonance (EPR) spectroscopy that in the process of the mechanochemical doping of the CaF2 fine particles with Er3+ and Yb3+ ions the cubic symmetry rare-earth (RE) ion centers are formed with the concentration proportional to the particles surface in the sample. Amount of the mechano-doped RE-ion centers is proportional to ηα, where η is the weight fraction of the RE fluoride in the initial mixture and α ~ 0.8. Cubic symmetry centers dominate in the EPR spectrum up to η = 0.1. A hypothesis of the cubic RE-ion center formation is proposed according to which its origin is associated with the presence of the ideal cleavage planes in the CaF2 crystals: during the mechano-doping a considerable fraction of the rare-earth ions is trapped between the cleavage planes of the agglomerating particles, thereby getting into the crystal field of the cubic symmetry. © Kazan Federal University (KFU).
dc.subject Electron paramagnetic resonance
dc.subject Fluorite
dc.subject Mechanochemical doping
dc.subject Rare-earth ions
dc.title EPR study of the CaF2 powder mechanochemical doping with rare-earth ions
dc.type Article
dc.relation.ispartofseries-issue 2
dc.relation.ispartofseries-volume 15
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1
dc.source.id SCOPUS-2013-15-2-SID84886874745


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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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