Journalartikel

Jahr der Veröffentlichung: 2020

Seiten: 1-6

Zeitschrift: Zeitschrift für Kristallographie. Crystalline Materials

Bandnummer: 235

Heftnummer: 1-2

ISSN: 2194-4946

eISSN: 2196-7105

DOI Link: https://doi.org/10.1515/zkri-2019-0053

Verlag: De Gruyter Brill

Abstract: 
The Na+ solid state electrolyte Na3PS4 is currently being investigated due to its high ionic conductivity and its synthesis-dependent crystal structure. Na3PS(4) adopts a tetragonal low-temperature modification with space group P (4) over bar 21c that transforms to a cubic high-temperature modification with space group I (4) over bar 3m (Tl3VS4 type). These two modifications are related by a group-subgroup scheme. The symmetry reduction proceeds via a translationengleiche transition from I (4) over barm to I (4) over bar 2m and subsequently via a klassengleiche transition to P (4) over bar 21c. The tetragonal phase with space group I (4) over bar 2m corresponds to the K2HgSnSe4 type. The group-subgroup scheme of this tetragonal branch of the Barnighausen tree is discussed along with the crystal chemical consequences and results of diffraction experiments. The structure of K3SbSe4 (space group R3c) belongs to the rhombohedral branch of the aristotype Tl3VS4.

Harvard-Zitierstil: Seidel, S., Zeier, W. and Poettgen, R. (2020) The polymorphs of the Na⁺ ion conductor Na₃PS₄ viewed from the perspective of a group-subgroup scheme, Zeitschrift für Kristallographie. Crystalline Materials, 235(1-2), pp. 1-6. https://doi.org/10.1515/zkri-2019-0053

APA-Zitierstil: Seidel, S., Zeier, W., & Poettgen, R. (2020). The polymorphs of the Na⁺ ion conductor Na₃PS₄ viewed from the perspective of a group-subgroup scheme. Zeitschrift für Kristallographie. Crystalline Materials. 235(1-2), 1-6. https://doi.org/10.1515/zkri-2019-0053