Paper alert! 

Peixue published her first paper on mineralogical study of bridgmanite in JGR: Solid Earth.

Ab Initio Evaluation of Point Defects in Bridgmanite Under Lower Mantle Conditions

This study investigated various types of point defects in bridgmanite (MgSiO3) under lower mantle conditions by ab initio calculation. The results show that among the possible point defects, oxygen vacancies have the highest concentration, which can reach up to 10−2 under the lower-mantle conditions. The abundant point defects in the lower mantle minerals are of great significance to the rheology of the lower mantle and the storage of trace elements like volatiles.

Defect concentrations at high temperatures under (a) MgO-saturated condition and (b) SiO₂-saturated condition. The solid markers show the conditions under which the direct simulations were performed. The solid lines are interpolations as described in the text.

A short introduction of this paper in Chinese can be found here.