We report on a novel approach to dynamic compression of materials that bridges the gap between previous static- and dynamic- compression techniques, allowing to explore a wide range of pathways in the pressure-temperature space. By combining a dynamic-diamond anvil cell setup with double-sided laser-heating and in situ X-ray diffraction, we are able to perform dynamic compression at high temperature and characterize structural transitions with unprecedented time resolution. Using this method, we investigate the γ−ϵ phase transition of iron under dynamic compression for the first time, reaching compression rates of hundreds of GPa/s and temperatures of 2000 K. Our results demonstrate a distinct response of the γ−ϵ and α−ϵ transitions to the high compression rates achieved. These findings open up new avenues to study tailored dynamic compression pathways in the pressure-temperature space and highlight the potential of this platform to capture kinetic effects in a diamond anvil cell.
@article{arxiv.2303.08857,
title = {Phase transition kinetics revealed by in situ X-ray diffraction in laser-heated dynamic diamond anvil cells},
author = {Matthew Ricks and Arianna E. Gleason and Francesca Miozzi and Hong Yang and Stella Chariton and Vitali B. Prakapenka and Stanislav V. Sinogeikin and Richard L. Sandberg and Wendy L. Mao and Silvia Pandolfi},
journal= {arXiv preprint arXiv:2303.08857},
year = {2024}
}
Comments
Reworked the text and figures to be more in line with the format of PRL