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Electron paramagnetic resonance and optical spectroscopy of Yb3+ ions in SrF2 and BaF2; an analysis of distortions of the crystal lattice near Yb3+

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dc.contributor.author Falin M.
dc.contributor.author Gerasimov K.
dc.contributor.author Latypov V.
dc.contributor.author Leushin A.
dc.date.accessioned 2018-09-17T20:56:49Z
dc.date.available 2018-09-17T20:56:49Z
dc.date.issued 2003
dc.identifier.issn 0953-8984
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/134297
dc.description.abstract SrF2 and BaF2 crystals, doped with the Yb3+ ions, have been investigated by electron paramagnetic resonance and optical spectroscopy. As-grown crystals of SrF2 and BaF2 show the two paramagnetic centres for the cubic (Tc) and trigonal (T4) symmetries of the Yb3+ ions. Empirical diagrams of the energy levels were established and the potentials of the crystal field were determined. Information was obtained on the SrF2 and BaF2 phonon spectra from the electron-vibrational structure of the optical spectra. The crystal field parameters were used to analyse the crystal lattice distortions in the vicinity of the impurity ion and the F- ion compensating for the excess positive charge in T4. Within the frames of a superposition model, it is shown that three F- ions from the nearest surrounding cube, located symmetrically with respect to the C3 axis from the side of the ion-compensator, approach the impurity ion and cling to the axis of the centre when forming T4. The F- ion located on the axis of the centre between the Yb3+ ion and ion-compensator, also approaches close to the impurity ion.
dc.relation.ispartofseries Journal of Physics Condensed Matter
dc.title Electron paramagnetic resonance and optical spectroscopy of Yb3+ ions in SrF2 and BaF2; an analysis of distortions of the crystal lattice near Yb3+
dc.type Article
dc.relation.ispartofseries-issue 17
dc.relation.ispartofseries-volume 15
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 2833
dc.source.id SCOPUS09538984-2003-15-17-SID0038193610


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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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