Superpowers of Ferroelectrics ft. Ipek Efe

Superpowers of Ferroelectrics ft. Ipek Efe

In Other Words

Her current work growing self-healing Aurivillius ferroelectric thin films: using in-situ second-harmonic generation to watch polarization during growth (revealing a two-step behaviour), then engineering bismuth ferrite into the fatigue-free framework to get a net, non-degrading polarization.

Key Takeaways

• PhD student at ETH Zurich growing ferroelectric oxide thin films (1–15 nm), materials that combine piezo-, pyro-, photovoltaic and ferroelastic behaviour in one.
• Ferroelectric memories ‘fatigue’ after ~a million–billion cycles as defects pin the polarization; Aurivillius crystals self-heal this via charged intermediate layers.
• A CERN internship on multiferroic bismuth ferrite (switching magnetism with small electric fields, saving energy) set her direction.
• Likes that materials science makes her mindful of everything around her, and that science teaches how to find reliable information.
• Three wishes: more interdisciplinary conversation, science communication as a default institutional expectation, and free time for ‘crazy’ side projects.