DFTEM (image) DOE/Brookhaven National Laboratory Caption These dark-field transmission electron microscopy images show ferroelectric domain switching under various external biases. Without external current, the PZT film is split—the two opposing polarization are arranged in a head-to-head configuration. Crucially, with V applied in the bottom image, the domains near the PZT/Nb-STO interface fail to switch. Credit Brookhaven National Laboratory Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.