The length scale at which phenomena such as ferroelectricity is still present is of fundamental relevance for nanoscale applications. A high-resolution transmission electron microscopy study now shows how ferroelectricity can persist in nanoparticles down to about 5 nm in diameter, pointing the way towards the ultimate size limit for ferroelectric applications.
- Mark J. Polking
- Myung-Geun Han
- Ramamoorthy Ramesh
