Structural Phase Transitions and the Equation of State in SnSe at High Pressures up to 2 Mbar
- Authors: Ivanova A.G.1,2, Troyan I.A.1,2, Chareev D.A.3,4,5, Gavriliuk A.G.1,2,6, Starchikov S.S.1,2, Baskakov A.O.1, Frolov K.V.1, Mezouar M.7, Lyubutin I.S.1
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Affiliations:
- Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics
- Institute for Nuclear Research
- Institute of Experimental Mineralogy
- Institute of Physics and Technology
- Kazan Federal University
- Immanuel Kant Baltic Federal University
- European Synchrotron Radiation Facility, CS40220
- Issue: Vol 108, No 6 (2018)
- Pages: 414-418
- Section: Condensed Matter
- URL: https://ogarev-online.ru/0021-3640/article/view/161313
- DOI: https://doi.org/10.1134/S0021364018180066
- ID: 161313
Cite item
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 ≈ 2.5 32 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\(\bar 3\)m) 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.
About the authors
A. G. Ivanova
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics; Institute for Nuclear Research
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333; Moscow, 117312
I. A. Troyan
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics; Institute for Nuclear Research
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333; Moscow, 117312
D. A. Chareev
Institute of Experimental Mineralogy; Institute of Physics and Technology; Kazan Federal University
Email: lyubutinig@mail.ru
Russian Federation, Chernogolovka, Moscow region, 142432; Yekaterinburg, 620002; Kazan, 420008
A. G. Gavriliuk
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics; Institute for Nuclear Research; Immanuel Kant Baltic Federal University
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333; Moscow, 117312; Kaliningrad, 236041
S. S. Starchikov
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics; Institute for Nuclear Research
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333; Moscow, 117312
A. O. Baskakov
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333
K. V. Frolov
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333
M. Mezouar
European Synchrotron Radiation Facility, CS40220
Email: lyubutinig@mail.ru
France, Grenoble Cedex 9, F-38043
I. S. Lyubutin
Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics
Author for correspondence.
Email: lyubutinig@mail.ru
Russian Federation, Moscow, 119333
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