Impurity Segregation and Nanoparticle Reorganization of Indium Doped MgO Cubes.

ABSTRACT: Metal oxide nanocomposites are non-equilibrium solids and promising precursors for functional materials. Annealing of such materials can provide control over impurity segregation and, depending on the level of consolidation, represents a versatile approach to engineer free surfaces, particle-particle interfaces and grain boundaries. Starting with indium-magnesium-oxide nanoparticle powders obtained via injection of an indium organic precursor into the magnesium combustion flame and subsequent particle quenching in argon, we investigated the stability of the trivalent In³⁺ ions in the host lattice of MgO nanoparticles by determining grain growth, morphology evolution and impurity segregation. The latter process is initiated by vacuum annealing at 873 K and can be tracked at 1173 

SUBMITTER: Niedermaier M 

PROVIDER: S-EPMC6563704 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature