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Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Авторы:
Karimov Denis N.,
Buchinskaya Irina I.,
Ivanova Anna G.,
Arkharova Natalia A.,
Zykova Marina P.,
Nabatov B.V.,
Volchkov Ivan S.,
Khaydukov Kirill V.,
Sorokin Nikolay I.
Аннотация:Journal of Crystal GrowthAvailable online 10 January 2022, 126521In Press, Journal Pre-proofWhat are Journal Pre-proof articles?Ytterbium Difluoride YbF2: Preparation, Structure, PropertiesAuthor links open overlay panelDenis N.KarimovaIrina I.BuchinskayaaAnna G.IvanovaaNatalia A.ArkharovaaMarina P.ZykovabB.V.NabatovaIvan S.VolchkovaKirill V.KhaydukovaNikolay I.SorokinaaShubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninsky prospect 59, Moscow 119333, RussiabMendeleev University of Chemical Technology of Russia, Miusskaya square 9, Moscow 125047, RussiaReceived 7 October 2021, Revised 3 January 2022, Accepted 4 January 2022, Available online 10 January 2022.https://doi.org/10.1016/j.jcrysgro.2022.126521Get rights and contentHighlights•Near-stoichiometric ytterbium difluoride microcrystals were synthesized.•Vapor-based comproportionation reaction synthesis was applied.•Layer-by-layer growth of crystal planes on the surfaces of YbF2+x aggregates was observed.•Microhardness and ionic conductivity of YbF2+x crystals were investigated.AbstractTransparent-yellow ytterbium difluoride YbF2+x single microcrystals were successfully synthesized by the vapor-based comproportionation reaction from YbF3 with excess of Yb0 metallic in an evacuated quartz ampoule at 1150 K. The cubic single-phase YbF2+x crystals with near-stoichiometric composition have lattice parameters a = 5.5983(3) – 5.5964(2) Å for x = 0.01–0.03. Single-crystal structure determination was carried out within the space group Fm-3m. The surface morphology of the grown microcrystalline aggregates is investigated by optical and scanning electron microscopy in detail. Layer-by-layer growth of crystal planes in the <100> and <111> directions on the surfaces of the crystal aggregates and characteristic cuboctahedral voids were observed. Some of the physical properties of the synthesized YbF2+x microcrystals were investigated to determine the potential for their use in photonics and solid-state ionics.