Significantly enhanced room temperature electrocaloric response with superior thermal stability in sodium niobate-based bulk ceramics

This work simultaneously achieved a large temperature change (ΔT, ∼0.70 K) at room temperature and ultra-stable ΔT(±1.4% variation between 300 K with 380 K) in 0.78NaNbO₃–0.22BaTiO₃bulk ceramic.