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Application of nuclear inelastic scattering spectroscopy to the frequency scale calibration of ab initio calculated phonon density of states of quasi-one-dimensional ternary iron chalcogenide rbfese<inf>2</inf>

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dc.contributor.author Kiiamov A.
dc.contributor.author Tsurkan V.
dc.contributor.author Croitori D.
dc.contributor.author von Nidda H.A.K.
dc.contributor.author Seidov Z.
dc.contributor.author Wille H.C.
dc.contributor.author Sergueev I.
dc.contributor.author Leupold O.
dc.contributor.author Tayurskii D.
dc.contributor.author Tagirov L.
dc.date.accessioned 2021-02-25T20:53:25Z
dc.date.available 2021-02-25T20:53:25Z
dc.date.issued 2020
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/162581
dc.description.abstract © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This study aims to examine the applicability of nuclear inelastic scattering (NIS) and conventional Mössbauer spectroscopy for calibration of the frequency scale of ab initio calculated phonon density of states (PDOS) of iron ternary chalcogenides. NIS measurements are carried out on the quasi-one-dimensional ternary chalcogenide RbFeSe2 to obtain the partial PDOS of the iron atoms in the compound. We compare the experimental PDOS with our previous results on vibrational properties of RbFeSe2 obtained with density functional theory (DFT) ab initio calculations, conventional Mössbauer, and infra-red spectroscopies. The experimental PDOS measured by NIS is collated with the ab initio calculated one. The frequency correction factor for the ab initio results is determined as 1.077, in good agreement with value of 1.08 obtained previously from the temperature dependence of the Lamb–Mössbauer factor of the iron atoms in RbFeSe2 . We conclude that nuclear inelastic scattering and temperature dependence of the Lamb–Mössbauer factor in conventional Mössbauer spectroscopy can be equally applied for evaluation of the frequency correction factor for ab initio calculated phonon density of iron of ternary chalcogenides.
dc.subject Ab initio DFT theory
dc.subject DFT phonon frequency correction factor
dc.subject Nuclear inelastic scattering
dc.subject Phonon density of states
dc.title Application of nuclear inelastic scattering spectroscopy to the frequency scale calibration of ab initio calculated phonon density of states of quasi-one-dimensional ternary iron chalcogenide rbfese<inf>2</inf>
dc.type Article
dc.relation.ispartofseries-issue 20
dc.relation.ispartofseries-volume 10
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1
dc.source.id SCOPUS-2020-10-20-SID85092771726


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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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