Abstract:
The crystal structure of tin selenide SnSe has been studied under quasihydrostatic compression at pressures up to 205 GPa created in diamond anvil cells at room temperature. Two structural phase transitions have been detected at and P≈2.532 GPa. The former phase transition is continuous from the GeS-type structure (space group Pbnm) to the TlI-type structure (space group Cmcm). The phase transition to the CsCl-type cubic structure (space group Pm¯¯¯3m) occurs at 32 GPa and is accompanied by a stepwise decrease in the volume of the unit cell by 7%. The pressure dependence of the specific volume of the unit cell at room temperature has been constructed up to 205 GPa.
Citation:
A. G. Ivanova, I. A. Troyan, D. A. Chareev, A. G. Gavriliuk, S. S. Starchikov, A. O. Baskakov, K. V. Frolov, M. Mezouar, I. S. Lyubutin, “Structural phase transitions and the equation of state in SnSe at high pressures up to 2 Mbar”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:6 (2018), 435–439; JETP Letters, 108:6 (2018), 414–418
\Bibitem{IvaTroCha18}
\by A.~G.~Ivanova, I.~A.~Troyan, D.~A.~Chareev, A.~G.~Gavriliuk, S.~S.~Starchikov, A.~O.~Baskakov, K.~V.~Frolov, M.~Mezouar, I.~S.~Lyubutin
\paper Structural phase transitions and the equation of state in SnSe at high pressures up to $2$~Mbar
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2018
\vol 108
\issue 6
\pages 435--439
\mathnet{http://mi.mathnet.ru/jetpl5706}
\crossref{https://doi.org/10.1134/S0370274X18180133}
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\transl
\jour JETP Letters
\yr 2018
\vol 108
\issue 6
\pages 414--418
\crossref{https://doi.org/10.1134/S0021364018180066}
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Linking options:
https://www.mathnet.ru/eng/jetpl5706
https://www.mathnet.ru/eng/jetpl/v108/i6/p435
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V. V. Zalamai, A. V. Tiron, E. V. Rusu, E. V. Monaico, N. N. Syrbu, 4Th International Conference on Nanotechnologies and Biomedical Engineering, Icnbme-2019, Ifmbe Proceedings, 77, eds. I. Tiginyanu, V. Sontea, S. Railean, Springer, 2020, 117–120
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