Phase equilibria in the SnBi2Te4MnBi2Te4 system and characterization of the Sn1-xMnxBi2Te4 solid solutions

Фізика і хімія твердого тіла

E. Orujlu¹ 

[1] Acad. M. Nagiyev Institute of Catalysis and Inorganic Chemistry of Azerbaijan NAS;

关键词: snbi2te4-mnbi2te4 system;    phase equilibria;    solid solutions;    tetradymite-like structure;    topological insulator;   

DOI  :  10.15330/pcss.21.1.113-116

来源: DOAJ

【 摘 要 】

The phase diagram of the SnBi2Te4-MnBi2Te4 system was established over the entire concentration range by means of differential thermal analysis and powder X-ray diffraction techniques. It was shown that the system is non-quasi-binary due to the incongruent melting character of SnBi2Te4 and MnBi2Te4 compounds, but it is stable below solidus. The formation of a continuous series of solid solutions with the tetradymite-like layered structure was observed. Due to ionic radius differences of Mn2+ and Sn2+, both unit cell parameters of solid solutions increase linearly with the increasing amount of Sn. Phase equilibria above the solidus curve cannot be completed until the SnTe-MnTe-Bi2Te3 system fully studied.

【 授权许可】

Unknown