Introduction to the special issue on electroceramics

The Electroceramics series of conferences has established itself over the past 20 years as a major international forum for presenting developments and innovations in the field of electroceramics. For Electroceramics XI, we combined forces with the UK Ferroelectrics Network, the UK Institute of Physics Materials and Characterisation Group, and COST539 to expand the scope of the meeting and provide opportunities for interactions with new groups. In response to the submission of almost 800 abstracts, Electroceramics XI was structured around 14 separated symposia. More than 300 papers were selected for oral presentation. This special issue contains a selection of the papers presented in symposium D2: Piezoelectric Ceramics.