Direct observation of elemental fluctuation and oxygen octahedral distortion-dependent charge distribution in high entropy oxides.

ABSTRACT: The enhanced compositional flexibility to incorporate multiple-principal cations in high entropy oxides (HEOs) offers the opportunity to expand boundaries for accessible compositions and unconventional properties in oxides. Attractive functionalities have been reported in some bulk HEOs, which are attributed to the long-range compositional homogeneity, lattice distortion, and local chemical bonding characteristics in materials. However, the intricate details of local composition fluctuation, metal-oxygen bond distortion and covalency are difficult to visualize experimentally, especially on the atomic scale. Here, we study the atomic structure-chemical bonding-property correlations in a series of perovskite-HEOs utilizing the recently developed four-dimensional scanning transmission electro

SUBMITTER: Su L 

PROVIDER: S-EPMC9055071 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature