@article{Dong2024, 
author = {Weiwei Dong and Wei Xu and Zhiying Guo and Weishu Liu and Yu Pan and Satishkumar Kulkarni and Xiaodong Li and Konstantin Glazyrin},
title = {Assessing structure of Mg3Bi2−xSbx (0 ≤ x ≤ 2) at pressures below 40 GPa},
year = {2024},
journal = {Journal of Materiomics},
volume = {10},
number = {4},
pages = {837-844},
keywords = {Mg3Bi2-xSbx  (0 ≤ x ≤ 2), Thermoelectric, High-pressure, Structural evolution},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2023.10.004},
doi = {10.1016/j.jmat.2023.10.004},
abstract = {Mg3Bi2-xSbx (0 ≤ x ≤ 2) have gained significant attention due to their potential in thermoelectric (TE) applications. However, there has been much debating regarding their structural properties and phase diagram as a function of pressure, which is crucial for understanding of their TE properties. Here, we investigate a unified phase diagram of Mg3(Bi,Sb)2 materials up to 40 GPa at room temperature using high-pressure X-ray diffraction. Two high-pressure phases with the structural transition succession of P3m1→ C2/m → P21/n are observed, which is valid for all Mg3Bi2-xSbx  (0 ≤ x ≤ 2) compounds. We further explore the low-pressure phase P3m1 and report that alloying does not change the quasi-isotropic compression of the unit lattice parameters nor has effect on the anisotropic bond compressibility, as recently reported for the end-members. Our study presents a comprehensive picture of Mg3Bi2-xSbx  as a function of pressure and chemical composition providing a solid foundation for the future experimental and theoretical studies searching for the most efficient TE compound in Mg3(Bi,Sb)2.}
}