Sound velocity and absorption measurements under high pressure using picosecond ultrasonics in diamond anvil cell. Application to the stability study of AlPdMn

TL;DR

This paper introduces a novel high-pressure method combining diamond anvil cells with picosecond ultrasonics to measure sound velocity and absorption, enabling advanced studies of lattice dynamics and stability in materials like AlPdMn.

Contribution

The paper presents an innovative technique that overcomes traditional measurement limitations under high pressure, expanding capabilities for studying material stability and dynamics.

Findings

Successful measurement of sound velocity and attenuation under high pressure

Application to study defect-induced lattice stability in AlPdMn up to 30 GPa

Potential for broad scientific applications in physics and material research

Abstract

We report an innovative high pressure method combining the diamond anvil cell device with the technique of picosecond ultrasonics. Such an approach allows to accurately measure sound velocity and attenuation of solids and liquids under pressure of tens of GPa, overcoming all the drawbacks of traditional techniques. The power of this new experimental technique is demonstrated in studies of lattice dynamics, stability domain and relaxation process in a metallic sample, a perfect single-grain AlPdMn quasicrystal, and rare gas, neon and argon. Application to the study of defect-induced lattice stability in AlPdMn up to 30 GPa is proposed. The present work has potential for application in areas ranging from fundamental problems in physics of solid and liquid state, which in turn could be beneficial for various other scientific fields as Earth and planetary science or material research.