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  Antifluorite to Ni2In-type phase transition in K2S at high pressures

Vegas, A., Grzechnik, A., Hanfland, M., Mühle, C., & Jansen, M. (2002). Antifluorite to Ni2In-type phase transition in K2S at high pressures. Solid State Sciences, 4(8), 1077-1081.

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 Urheber:
Vegas, A., Autor
Grzechnik, A.1, Autor           
Hanfland, M., Autor
Mühle, C.2, 3, Autor           
Jansen, M.3, Autor           
Affiliations:
1Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370501              
2Department Quantum Materials (Hidenori Takagi), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370487              
3Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370503              

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Schlagwörter: high pressure; X-ray powder diffraction; crystal structure; dipotassium sulfide
 Zusammenfassung: The high-pressure behaviour of dipotassium sulfide K2S with the
antifluorite structure (Fm (3) over barm, Z = 4) has been
studied up to 23.0 GPa by in situ synchrotron angle-dispersive
X-ray powder diffraction in a diamond anvil cell at room
temperature. There occurs a transformation into a distorted
Ni2In-type structure (Pmma, Z = 4) at about 6 GPa upon
compression. A mixture of several phases is observed at lower
pressures. Unlike in the case of pressure-induced modifications
of Li2S and Na2S, none of them is of the anticotunnite-type
(Pnma, Z = 4). The Ni2In-related structure,of K2S is compared
with the cationic arrays found in different polymorphs of K2SO3
and K2SO4. (C) 2002 Editions scientifiques et medicales
Elsevier SAS. All rights reserved.

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Sprache(n): eng - English
 Datum: 2002
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 7124
ISI: 000178515200011
 Art des Abschluß: -

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Titel: Solid State Sciences
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 4 (8) Artikelnummer: - Start- / Endseite: 1077 - 1081 Identifikator: ISSN: 1293-2558