Abstract
The phase equilibrium diagram of the SnSe-Bi2Se3 system has been re-investigated using X-ray powder diffraction, thermal analysis (DTA and DSC) and 119Sn Mössbauer spectroscopy data. It shows solid solutions based on Bi2Se3 and SnSe (α and β forms) and three intermediate phases: well-defined, SnBi4Se7, SnBi4Se7, and a new phase Sn2Bi2Se5. The new phase Sn2Bi2Se5 exists in the composition range 25-55 mol% Bi2Se3. Its structure is still under study. However, 119Sn Mössbauer spectroscopy study of the latter allowed to achieve a well knowledge of the local environment of tin atoms and could contribute to the actual structural study. © 2006 Elsevier B.V. All rights reserved.
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Adouby, K., Moubtassim, M. L. E., Vicente, C. P., Jumas, J. C., & Touré, A. A. (2008). X-ray diffraction, 119Sn Mössbauer and thermal study of SnSe-Bi2Se3 system. Journal of Alloys and Compounds, 453(1–2), 161–166. https://doi.org/10.1016/j.jallcom.2006.11.138
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