Stabilization of the first-order phase transition character and Enhancement of the Electrocaloric Effect by NBT substitution in BaTiO3 ceramics

First-order character of the ferroelectric phase transition in BaTiO 3 (BT) is maintained by Na 0.5 Bi 0.5 TiO 3 (NBT) substitution, which in turn causes large electrocaloric response.