Xinyu Li

TL;DR: In this article, a giant electrocaloric effect (ECE) near room temperature is reported in a lead-free bulk inorganic material, which exhibits relaxor ferroelectric response to near the invariant critical point.

TL;DR: In this article, the electrocaloric effect (ECE) in inorganic thin film and organic relaxor ferroelectrics is investigated by directly measuring the ECE around room temperature, and the results reveal that giant ECEs can be obtained in the high energy electron irradiated poly(vinylidene fluoride-trifluoroethylene) relaxor copolymer and in the La-doped Pb(ZrTi)O3 relaxor ceramic thin films, which are much larger than that from the normal ferroelectric counterparts.

TL;DR: In this paper, the basic physics of poly(vinylidene fluoride- co-trifluoroethylene) [P(VDF-TrFE)]-based terpolymers, electron-beam (e-beam) irradiated P(VFD-trFE) copolymers, and PVDF graft copolymer were investigated.

TL;DR: In this paper, the authors reported the directly measured electrocaloric effect (ECE) (the adiabatic temperature change ΔT) of relaxor ferroelectric poly(vinylidene fluoride-trifluorethylene-chlorofluoroethylene).

TL;DR: In this paper, the authors summarized typical properties of pyroelectric and electrocaloric materials, present figures of merit for both phenomena, examine the relationship between the pyro electric and electro-caloric effect, and also present theoretical works, experimental results, and material modifications to achieve large responses in electrocalric materials.