When measuring heterogeneous samples with atom probe tomography (APT), the different evaporation behaviour of the materials can lead to non-hemispherical apex topographies [1]. Because the local curvature is one of the main factors determining the ion trajectories, any deviation from a hemispherical shape can lead to locally varying magnifications and therefore, spatial inaccuracies [2]. In...
Strontium titanate (STO) is a material with promising properties for applications in thermoelectricity, catalysis, fuel cells and other fields but its properties are highly sensitive to stoichiometry and the presence of impurities and other defects, particularly grain boundaries. Transmission electron microscopy (TEM) has been instrumental in studying the atomic-scale structure of STO;...
The beauty of Bismuth-based layered oxy-chalcogenide is their two distinct alternatively stacked layered structure having completely different chemical bonds in each layer i.e., oxide layer and chalcogen layer. This interesting layered structure allows the tuning of properties and can make a potential candidate in different fields such as thermoelectrics. For a thermoelectric device, Bi2O2Se...
