Alexandra Goryaeva receives the Haüy-Lacroix Award 2017

Alexandra Goryaeva (post-doc, MATEIS) received the Haüy-Lacroix 2017 Prize of the French Society of Mineralogy and Crystallography, Friday June 16th at the National Museum of Natural History in Paris.
His work "Modeling at the atomic scale of dislocations and plasticity in the post-perovskite MgSiO3" was carried out within the Materials and Transformations Unit of the University of Lille, under the direction of P. Cordier and P Carrez. The physical properties of layer D'', located at the mantle-core boundary, are little known despite their importance in understanding heat transfer from the nucleus and their contribution to mantle convection. Under these extreme conditions of pressure and temperature, the different numerical modeling techniques implemented during this thesis are particularly relevant. More precisely, A. Goryaeva undertook the study at the atomic scale of the major defects of the post-perovskite MgSiO3 as well as their mobilities in order to evaluate the capacity of this phase to plastically deform by sliding dislocations.