Researchers from the Electronic Ceramics Department K5 at the Jožef Stefan Institute, Ivana Goričan, Nejc Suban, Silvo Drnovšek, Matej Šadl and Hana Uršič, together with colleagues from Luxembourg and France, have published an article in Nature Communications entitled “Tunable electrocaloric effect in lead scandium tantalate through calcium doping”. The study shows that calcium doping of lead scandium tantalate with a highly ordered B-site cation arrangement in the perovskite structure enables precise tuning of its phase transitions and electrocaloric response. The results reveal the emergence of an intermediate antiferroelectric phase and demonstrate an electrocaloric temperature change of about 2 K over a broad temperature range from 263 K to 353 K. These findings open new possibilities for cascaded electrocaloric cooling devices with extended operating ranges, including below the freezing point of water.