Springe direkt zu Inhalt

Low-Cost, Multifunctional, and Sustainable Sodium Sulfido Ferrate(II)

ic23

ic23

M. R. Ghazanfari, K. Siemensmeyer, A. Santhosh, J. C. Vrijmoed, M. Talli, S. Dehnen, P. Jerabek, G. Thiele – 2023

We introduce Na2[Fe3S4], comprising anionic layers, synthesized by a simple and straightforward solid-state method based on the fusion of binary sulfides of abundant sodium and iron. The structure crystallizes in a trigonal lattice with honeycomb cavities, as well as 25% of statistical iron vacancies in the crystal structure. The compound depicts high dielectric constants from 998 to 1850 at a frequency of 1 kHz depending on the sintering temperature, comparable with benchmark dielectric materials. According to the complex electrochemical impedance results, the compound depicts an electrical conductivity at ambient temperature. Optical investigations reveal a band gap of 1.64 eV, which is in agreement with an electronic band gap of 1.63 eV computed by density functional theory calculations. Magnetometry results reveal an antiferromagnetic behavior with a transition at 120 K. These findings introduce Na2[Fe3S4] as a sustainable multifunctional material with potential for a variety of electronic and magnetic applications.

Titel
Low-Cost, Multifunctional, and Sustainable Sodium Sulfido Ferrate(II)
Verfasser
M. R. Ghazanfari, K. Siemensmeyer, A. Santhosh, J. C. Vrijmoed, M. Talli, S. Dehnen, P. Jerabek, G. Thiele
Datum
2023
Zitierweise
Inorg. Chem., 2023, ahead of print.
Art
Text