Unlocking the potential of perovskite ferroelectrics in electronics relies on a comprehensive understanding of their structure down to the atomic level. The critical components in this pursuit are structural imperfections that span multiple dimensions, including point defects, dislocations, domain walls, grain boundaries and nanodomains that interact with each other. Utilizing advanced atomic-scale scanning transmission electron microscopy with a 4D STEM pixelated detector allows us to analyze defect types, detect strain fields, observe charge density distribution, and study dynamic responses under external stimuli. In my talk, I will showcase various structural studies of ferroelectrics like bismuth ferrite, potassium sodium niobate and barium titanate. I will explore how the type, quantity and dynamics of structural defects impact local material properties, offering the potential to tailor these properties.
From laboratory to industry: how to build large quantum computers?
The field of quantum technology has seen remarkable progress over the past two decades. Recent advances have enabled the construction of quantum computers with several hundred qubits and the demonstration of quantum error correction. Nevertheless, the path towards...
