Optimized Synthesis of the Bismuth Subiodides BimI4 (m = 4, 14, 16, 18) and the Electronic Properties of Bi14I4 and Bi18I4

Weiz A, Mai Le Anh , Kaiser M, Rasche B, Herrmannsdoerfer T, Doert T, Ruck M (2017)

Publication Type: Journal article

Publication year: 2017

Journal

European Journal of Inorganic Chemistry Wiley-VCH Verlag

Book Volume: 2017

Pages Range: 5609-5615

Journal Issue: 47

DOI: 10.1002/ejic.201700999

Abstract

We optimized the syntheses of α- and β-Bi4I4 and transferred the method to the very bismuth-rich iodides Bi14I4, Bi16I4, and Bi18I4. Phase-pure, microcrystalline powders of BimI4 (m = 4, 14, 18) can now by synthesized on a multigram scale. Conditions for the growth of single crystals of Bi16I4 and Bi18I4 were determined. The redetermination of the crystal structure of Bi16I4 hints at a stacking disorder or the presence of 1 ∞[BimI4] ribbons with m = 14 and 18 among the dominant type along with m = 16. The electronic band structures for m = 14, 16, and 18 were calculated including spin-orbit coupling. They vary markedly with m and show numerous bands crossing the Fermi level, predicting a 3D-metallic behavior. Measurements of the electrical resistivity of a polycrystalline sample of Bi14I4 as well as polycrystalline and single-crystalline samples of Bi18I4 confirmed their metallic nature over the temperature range 300 K to 2 K. For Bi18I4, a positive and strictly linear magnetoresistance at 2 K in static magnetic fields up to 14 T was observed, which could indicate a topologically nontrivial electronic state.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Weiz, A., Mai Le Anh, ., Kaiser, M., Rasche, B., Herrmannsdoerfer, T., Doert, T., & Ruck, M. (2017). Optimized Synthesis of the Bismuth Subiodides BimI4 (m = 4, 14, 16, 18) and the Electronic Properties of Bi14I4 and Bi18I4. European Journal of Inorganic Chemistry, 2017(47), 5609-5615. https://doi.org/10.1002/ejic.201700999

MLA:

Weiz, Alexander, et al. "Optimized Synthesis of the Bismuth Subiodides BimI4 (m = 4, 14, 16, 18) and the Electronic Properties of Bi14I4 and Bi18I4." European Journal of Inorganic Chemistry 2017.47 (2017): 5609-5615.

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