Synthesis and thermoelectric properties of Rashba semiconductor BiTeBr with intensive texture

Xin JZ, Fu CG, Shi WJ, Li GW, Auffermann G, Qi YP, Zhu TJ, Zhao XB, Felser C (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Rare Metals Elsevier / Springer Verlag (Germany)

Book Volume: 37

Pages Range: 274-281

Journal Issue: 4

DOI: 10.1007/s12598-018-1027-9

Abstract

Bismuth tellurohalides with Rashba-type spin splitting exhibit unique Fermi surface topology and are developed as promising thermoelectric materials. However, BiTeBr, which belongs to this class of materials, is rarely investigated in terms of the thermoelectric transport properties. In the study, polycrystalline bulk BiTeBr with intensive texture was synthesized via spark plasma sintering (SPS). Additionally, its thermoelectric properties above room temperature were investigated along both the in-plane and out-plane directions, and they exhibit strong anisotropy. Low sound velocity along two directions is found and contributes to its low lattice thermal conductivity. Polycrystalline BiTeBr exhibits relatively good thermoelectric performance along the in-plane direction, with a maximum dimensionless figure of merit (ZT) of 0.35 at 560 K. Further enhancements of ZT are expected by utilizing systematic optimization strategies.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE) Zhejiang University

China (CN)

How to cite

APA:

Xin, J.-Z., Fu, C.-G., Shi, W.-J., Li, G.-W., Auffermann, G., Qi, Y.-P.,... Felser, C. (2018). Synthesis and thermoelectric properties of Rashba semiconductor BiTeBr with intensive texture. Rare Metals, 37(4), 274-281. https://doi.org/10.1007/s12598-018-1027-9

MLA:

Xin, Jia-Zhan, et al. "Synthesis and thermoelectric properties of Rashba semiconductor BiTeBr with intensive texture." Rare Metals 37.4 (2018): 274-281.

BibTeX: Download