Phase Equilibria of the MnTe-Sb2Te3 System and Synthesis of Novel Ternary Layered Compound – MnSb4Te7

  • E.N. Orujlu Institute Catalysis and Inorganic Chemistry, ANAS
  • Z.S. Aliev Azerbaijan State Oil and Industry University; Institute of Physics, ANAS
  • I.R. Amiraslanov Institute of Physics, ANAS
  • M.B. Babanly Institute Catalysis and Inorganic Chemistry, ANAS
Keywords: MnTe-Sb2Te3 system, manganese antimony tellurides, magnetic topological insulators, X-ray diffraction, phase diagram

Abstract

By using Differential Thermal Analysis (DTA) and Powder X-ray Diffraction (PXRD) techniques, the phase diagram of the MnTe-Sb2Te3 system has been constructed for the first time in the entire composition range. The system features two ternary layered van der Waals (vdW) compounds. Apart from known MnSb2Te4, novel MnSb4Te7 which a structural analogous of the known MnBi4Te7 was found in the system. Crystal structure parameters of both compounds were determined by Rietveld refinement using the fundamental parameter approach. Both compounds were found to decompose via peritectic reactions and possess significant homogeneity ranges. The title system is also characterized by the existence of the wide solid solution field based on the starting Sb2Te3. The present results would be useful for the bulk single crystal growth of both compounds from the liquid phase via the determination of primary crystallization areas.

Author Biographies

E.N. Orujlu, Institute Catalysis and Inorganic Chemistry, ANAS

Ph.D. student, Junior Researcher at the Department of Inorganic Functional Materials

Z.S. Aliev, Azerbaijan State Oil and Industry University; Institute of Physics, ANAS

Ph.D. on Chemistry, Associate Professor

I.R. Amiraslanov, Institute of Physics, ANAS

Professor

M.B. Babanly, Institute Catalysis and Inorganic Chemistry, ANAS

Professor, deputy-director of the Institute Catalysis and Inorganic Chemistry, ANAS

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Published
2021-02-24
How to Cite
[1]
OrujluE., AlievZ., AmiraslanovI. and BabanlyM. 2021. Phase Equilibria of the MnTe-Sb2Te3 System and Synthesis of Novel Ternary Layered Compound – MnSb4Te7. Physics and Chemistry of Solid State. 22, 1 (Feb. 2021), 39-44. DOI:https://doi.org/10.15330/pcss.22.1.39-44.
Section
Scientific articles