On the Way to Lead-free Technology (image) Fraunhofer-Gesellschaft Caption Computer simulation can calculate the possibilities of doping ferroelectric materials, such as potassium-sodium.niobate, with foreign atoms, such as copper. Credit Fraunhofer IWM Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.