Large Electrocaloric Effect in Relaxor Ferroelectric and Antiferroelectric Lanthanum Doped Lead Zirconate Titanate Ceramics.

ABSTRACT: Both relaxor ferroelectric and antiferroelectric materials can individually demonstrate large electrocaloric effects (ECE). However, in order to further enhance the ECE it is crucial to find a material system, which can exhibit simultaneously both relaxor ferroelectric and antiferroelectric properties, or easily convert from one into another in terms of the compositional tailoring. Here we report on a system, in which the structure can readily change from antiferroelectric into relaxor ferroelectric and vice versa. To this end relaxor ferroelectric Pb_0.89La_0.11(Zr_0.7Ti_0.3)_0.9725O₃ and antiferroelectric Pb_0.93La_0.07(Zr_0.82Ti_0.18)_0.9825O₃ ceramics were designed

SUBMITTER: Lu B 

PROVIDER: S-EPMC5366905 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature