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Dostęp zamkniętyLaser-induced crystallization and phase transitions of As2Se3 under high pressure
| cris.lastimport.scopus | 2024-02-12T19:37:08Z |
| dc.abstract.en | Utilizing the synchrotron x-ray powder diffraction As2Se3 has been investigated under high pressure in a diamond anvil cell with hydrogen and neon applied as the pressure media. For both systems the amorphous samples were compressed to ca. 2-3 GPa and heated in situ by a laser, which led to their crystallization in the R-3 m, Bi2Te3-type phase. During further compression this phase transforms to the C2/m, β-Sb2Te3-type structure, and they coexist within the pressure range of 21.5-33.0 GPa. The latter phase is observed up to the highest achieved pressure of 52.0 GPa, revealing no signs of reaction with the hydrogen pressure-transmitting medium. The pressure evolution of the volume of the reported phases has been described by the third-order Birch-Murnaghan equation of state. The relative stability of the experimentally detected crystalline phases is confirmed by the density functional theory calculations. The pressure-driven evolution of the As-Se distances and coordination number has been discussed in comparison to the recent findings concerning the amorphous a-As2Se3 phase. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Prakapenka, Vitali B. |
| dc.contributor.author | Struzhkin, Viktor V. |
| dc.contributor.author | Jaroń, Tomasz |
| dc.date.accessioned | 2024-01-25T04:59:44Z |
| dc.date.available | 2024-01-25T04:59:44Z |
| dc.date.issued | 2021 |
| dc.description.finance | Publikacja bezkosztowa |
| dc.description.number | 1 |
| dc.description.volume | 103 |
| dc.identifier.doi | 10.1103/PHYSREVB.103.014103 |
| dc.identifier.issn | 2469-9950 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/110889 |
| dc.identifier.weblink | https://link.aps.org/article/10.1103/PhysRevB.103.014103 |
| dc.language | eng |
| dc.pbn.affiliation | chemical sciences |
| dc.relation.ispartof | Physical Review B |
| dc.relation.pages | art.no. 014103 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.title | Laser-induced crystallization and phase transitions of As2Se3 under high pressure |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |