Control of polarization is a key issue in research on ferroelectrics materials and its possible use for low-consumption electronic devices. A ferroelectric material spontaneously show microscopic domains with different polarization directions to minimize its energy. We showed very low energy electrons generated using a Low Energy Electron Microscope (LEEM) can switch the ferroelectric polarziation in a reversible manner. The use of external charges (here electrons) to alter ferroelectric polarization gives a new direction to functionalize ferroelectric oxides.
Link to Publication
J. E. Rault, T. O. Mentes, A. Locatelli, N. Barrett
Reversible switching of in-plane polarized ferroelectric domains in BaTiO3(001) with very low energy electrons
Scientific Reports 4, 6792 (2014) (Open Access)
Link to Highlights
This highlight was published on CEA website in French.