Saturday 22 March 2025
Scientists have made a significant discovery in the field of materials science, uncovering new information about the properties of a unique material called indium selenide (In2Se3). This material has been found to exhibit unusual behavior under high pressure, transforming into different structures and phases as the pressure increases.
Indium selenide is a two-dimensional material, meaning it is made up of layers that are only a few atoms thick. It has gained attention in recent years due to its potential applications in fields such as electronics and energy storage. However, understanding its behavior under high pressure was crucial for unlocking its full potential.
Researchers used a combination of X-ray diffraction and Raman spectroscopy to study the material’s properties at pressures up to 67 gigapascals (GPa). For comparison, the pressure at sea level is about 0.1 GPa, so these conditions are incredibly high. The team found that as the pressure increased, the material underwent a series of phase transitions, transforming from its initial structure into new forms.
The first transition occurred at around 1 GPa, where the material changed from its initial rhombohedral structure to a monoclinic β′-In2Se3 phase. This transformation was accompanied by a significant change in the material’s lattice parameters, or the distance between its atoms. The researchers found that this change was not a result of compression alone, but rather a complex interplay between the material’s internal forces and the applied pressure.
As the pressure continued to increase, the β′-In2Se3 phase remained stable up to 45 GPa. However, above this point, the material underwent another transformation into an orthorhombic structure known as phase IV. This transition was characterized by a significant change in the material’s density and lattice parameters.
The researchers used advanced computational models to simulate the behavior of indium selenide under high pressure. These simulations allowed them to better understand the underlying mechanisms driving the phase transitions and predict the material’s properties at pressures not yet achievable experimentally.
The findings of this study have significant implications for our understanding of materials science and the development of new technologies. The ability to control the structure and properties of indium selenide under high pressure opens up new possibilities for its use in applications such as electronic devices, energy storage systems, and advanced sensors.
Cite this article: “Unveiling the High-Pressure Properties of Indium Selenide”, The Science Archive, 2025.
Materials Science, Indium Selenide, High Pressure, Phase Transitions, X-Ray Diffraction, Raman Spectroscopy, Computational Models, Lattice Parameters, Density, Nanotechnology.
