Temperature-electric field hysteresis loop of multicaloric effects in PbZr0.8Ti0.2O3 thin films

Publication date: Available online 28 June 2019Source: Physics Letters AAuthor(s): F. Wang, T. Liu, C.L. Xie, Y. Liu, N.S. Ma, J. Duan, J.R. He, B. Li, B.L. Ou, Y. Ou, J.J. Cheng, Q. Liu, L.F. Liu, W. WangAbstractThe Multicaloric effect in the PbZr0.8Ti0.2O3 thin films is investigated with the application of sine wave electric field, dc electric field and stress using a phase field method combined with the thermodynamic analysis. The simulation results show that the adiabatic temperature change-electric field curve presents a shape of butterfly in the presence of the sine wave electric field. In order to detect the effect of the sine wave electric field, the multicaloric effect and the domain structures under the direct electric field and the sine wave electric field are compared. It is found that the domain switching behaviors are quite different under the different applied electric fields. And the negative multicaloric effect in the PbZr0.8Ti0.2O3 thin film is attribute to the domain switching under the external field.

Source: Physics Letters A - June 30, 2019 Category: Physics Source Type: research