%0 Journal Article
%A Feng, Shiyu
%A Sun, Baihong
%A Lu, Wenting
%A Zou, Haikai
%A Wei, Chenxin
%A Zhang, Qian
%A Wang, Bihan
%A Kunz, Martin
%A Kadobayashi, Hirokazu
%A Ahmad, Azkar Saeed
%A Koren, Elad
%A Stavrou, Elissaios
%T High pressure structural and lattice dynamics study of α-In<sub>2</sub>Se<sub>3</sub>
%J The journal of chemical physics
%V 162
%N 23
%@ 0021-9606
%C Melville, NY
%I American Institute of Physics
%M PUBDB-2025-03826
%P 234505
%D 2025
%X Layered α-In<sub>2</sub>Se<sub>3</sub> has been studied using a combined in situ synchrotron angle-dispersive powder x-ray diffraction and Raman spectroscopy study in a diamond anvil cell up to 60+ GPa, at room temperature. Helium, which remains fairly hydrostatic up to the highest pressure in this study, was used as the pressure-transmitting medium. The results from both experimental methods reveal a pressure-induced structural phase transition from α-In<sub>2</sub>Se<sub>3</sub> to a monoclinic β′-In<sub>2</sub>Se<sub>3</sub> structure at ≈1 GPa, in agreement with previous studies. Based on our detailed measurements using both experimental techniques and the F–f formalism, the β′-In<sub>2</sub>Se<sub>3</sub> structure remains stable up to 45 GPa, without a clear indication of a phase transition toward the previously reported β-In<sub>2</sub>Se<sub>3</sub> phase. Above this pressure, <sub>2</sub>Se<sub>3</sub> adopts a disordered solid-solution-like orthorhombic structure, phase IV. The results are discussed in comparison with the relevant previous studies of α-In<sub>2</sub>Se<sub>3</sub> under pressure.   
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1063/5.0266372
%U https://bib-pubdb1.desy.de/record/637334