Went to Paris-Saclay for the PhD defense of Robin Fréville on tin and iron properties at high pressure. I did not consider that today was the first day of the fall holidays for schools in France. The train was really busy! It was a nice PhD defense with methodological developments for experiments in the diamond anvil cell, multigrain XRD experiments to study phase transformations mechanisms in Fe and Sn, and a new phase diagram for Sn over a megabar.













