Journal Article

PUBDB-2025-01181

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structure and properties of tubular structures based on the quaternary misfit layered compound Sm$_{1− x}$ Y$_x$S–TaS$_2$

Hettler, S. (Corresponding author) ; Furqan, M. ; Sreedhara, M. B. ; Khadiev, A.Extern*DESY* ; Tenne, R.Extern* ; Arenal, R. (Corresponding author)

2025
RSC Publishing London

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Please use a persistent id in citations: doi:10.1039/D5RA00780A  doi:10.3204/PUBDB-2025-01181

Abstract: Misfit layered compounds (MLCs) are incommensurate super-lattices made up of two repeating subunits and are promising for different applications due to the possibility of a synergetic combination of the properties of the employed sublayers. A means of fine-tuning a specific MLC is to alloy one of the elements in the system. In this study, quaternary MLCs made of Sm$_{1− x}$Y$_x$S–TaS$_2$ were successfully synthesized and the resulting structures were characterized in detail, with a specific focus on tubular structures. Owing to the small difference between the ionic radii of Sm and Y, the structure of the quaternary MLCs follows the one of pristine SmS–TaS$_2$, irrespective of the degree of alloying and with an anisotropic change of the lattice parameters up to a maximum of 2.7%. Nevertheless, microscopy, spectroscopy, and diffraction techniques allow us to reveal the impact of the composition on important characteristics of the MLC. Notably, for a specific composition, the ratio between the lattice parameters of the two subsystems adopts a value of 3 to 5, which could lead to a transition toward a commensurate superstructure.

Note: Beamtime was allocated for proposal 20010090.

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Contributing Institute(s):

1. PETRA-D (FS-PETRA-D)
2. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P23 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
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