Fig. 2
From: Enabling nanoscale flexoelectricity at extreme temperature by tuning cation diffusion
Compositional elemental mapping of a core–shell nanoparticle. a Bright-field transmission electron microscopy (TEM) image of a core–shell nanoparticle where some domain-like nanoregions (DLNRs) can be observed. b Scanning TEM energy-dispersive X-ray spectroscopy elemental mapping of the strontium-K ionization edge. It indicates there is a strontium enrichment in the shell and a strontium deficiency in the core. c–f Elemental maps of the remaining homogeneously distributed elements
