Origins of the Inverse Electrocaloric Effect.

ABSTRACT: The occurrence of the inverse (or negative) electrocaloric effect, where the isothermal application of an electric field leads to an increase in entropy and the removal of the field decreases the entropy of the system under consideration, is discussed and analyzed. Inverse electrocaloric effects have been reported to occur in several cases, for example, at transitions between ferroelectric phases with different polarization directions, in materials with certain polar defect configurations, and in antiferroelectrics. This counterintuitive relationship between entropy and applied field is intriguing and thus of general scientific interest. The combined application of normal and inverse effects has also been suggested as a means to achieve larger temperature differences between hot and cold r

SUBMITTER: Grunebohm A 

PROVIDER: S-EPMC6468253 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature