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  Synthesis and characterization of sulfide oxide SrZnSO with strongly polar crystal structure

Liu, W., Lai, K. T., Eckhardt, K., Prots, Y., Burkhardt, U., & Valldor, M. (2017). Synthesis and characterization of sulfide oxide SrZnSO with strongly polar crystal structure. Journal of Solid State Chemistry, 246, 225-229. doi:10.1016/j.jssc.2016.11.035.

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 Urheber:
Liu, Wei1, Autor           
Lai, Kwing To2, Autor           
Eckhardt, Kai3, Autor
Prots, Yurii4, Autor           
Burkhardt, Ulrich5, Autor           
Valldor, Martin6, Autor           
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3External Organizations, ou_persistent22              
4Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
5Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              
6Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863454              

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 Zusammenfassung: Pure SrZnSO powder is successfully prepared from repeated reactions at 1050 degrees C followed by a water sonication treatment. The final product has a light green color. Crystallites are optically transparent and crystal structure investigations reveal that SrZnSO crystallizes in a non-centrosymmetric, polar, hexagonal space group (P6(3)mc, alpha=3.90442(6) angstrom and c=11.6192(2) angstrom) and is isostructural to CaZnSO. The crystal structure of SrZnSO has polar layers in the ab plane of S-vertex-sharing ZnS3O tetrahedra that are separated by Sr ions: the complete structure can be written as Sr-infinity(2)[ZnS3/3O1/1]. Heat capacity measurements reveal that the room-temperature structure of SrZnSO persists down to 2 K. From optic data, a band-gap of about 3.1 eV is estimated and further absorption bands indicate defects in the anion lattice. Calculations based on atom fractional coordinates suggest that SrZnSO is less polar than CaZnSO.

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Sprache(n): eng - English
 Datum: 2017-01-122017-01-12
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: ISI: 000392363800033
DOI: 10.1016/j.jssc.2016.11.035
 Art des Abschluß: -

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Titel: Journal of Solid State Chemistry
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Orlando, Fla. : Academic Press
Seiten: - Band / Heft: 246 Artikelnummer: - Start- / Endseite: 225 - 229 Identifikator: ISSN: 0022-4596
CoNE: https://pure.mpg.de/cone/journals/resource/954922646045