Joseph V. Mantese

TL;DR: In this paper, the authors measured the film magnetization as a function of field and temperature and determined the entropy change associated with these transitions, showing that the large magnetization of these materials results in a total entropy change a factor of five less than that of gadolinium, the prototypical high-temperature magnetocaloric material.

TL;DR: In this paper, the intrinsic electrocaloric coefficient at electric fields sufficient to destroy the discontinuous ferroelectric phase transition results in an adiabatic temperature change of 8K that agrees closely with the giant value of 12K recently observed experimentally for lead zirconate titanate thin films.

TL;DR: In this article, the state-of-the-art materials, thermodynamic cycles, and device losses for electrothermal energy interconversion have been described, along with potential lines of research that would lead to substantially better figures of merit.

TL;DR: Novel charge pumping was observed in the active operation of simple two-terminal structures by excitation with periodic, strong electric fields and such operation also showed a large pseudopyroelectric response.

TL;DR: In this article, the authors extended Slater's empirical model for ferroelectric materials to also describe thin films with polarization gradients normal to the growth surface, i.e., graded Ferroelectric devices.