Researchers achieve record-high electrostrain in lead-free piezoceramics

Researchers from Tsinghua University, the Beijing Institute of Technology, the University of Wollongong (Australia), and the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, have achieved an ultrahigh electrostrain of 1.9% in (K,Na)NbO3 (KNN) lead-free piezoelectric ceramics.