Sample transportation: Considering the sensitivity of perovskite materials in general, it is important to minimize the exposure of the sample to ambient air, light and moisture. Research laboratories synthesizing these materials are often equipped with gloveboxes under controlled atmosphere. A hermetically sealed suitcase or docking kit could be used for transport from the glove box to the FIB instrument or directly to the synchrotron for STXM measurements. If possible, sample mounting on a STXM sample holder should be performed in the glovebox.