| Autor: |
Michael Vogl, Martin Valldor, Roman Boy Piening, Dmitri V. Efremov, Bernd Büchner, Saicharan Aswartham |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Electronic Materials, Vol 3, Iss 1, Pp 41-52 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2673-3978 |
| DOI: |
10.3390/electronicmat3010004 |
| Popis: |
We present the synthesis and characterization of the iridium-based sulfide Ca1−xIr4S6(S2). Quality and phase analysis were conducted by means of energy-dispersive X-ray spectroscopy (EDXS) and powder X-ray diffraction (XRD) techniques. Structure analysis reveals a monoclinic symmetry with the space group C 1 2/m 1 (No. 12), with the lattice constants a = 15.030 (3) Å, b = 3.5747 (5) Å and c = 10.4572 (18) Å. Both X-ray diffraction and EDXS suggest an off-stoichiometry of calcium, leading to the empirical composition Ca1−xIr4.0S6(S2) [x = 0.23–0.33]. Transport measurements show metallic behavior of the compound in the whole range of measured temperatures. Magnetic measurements down to 1.8 K show no long range order, and Curie–Weiss analysis yields θCW = −31.4 K, suggesting that the compound undergoes a magnetic state with short range magnetic correlations. We supplement our study with calculations of the band structure in the framework of the density functional theory. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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