Investigation of the electrocaloric effect in strontium barium niobate (SBN) ceramics with rare-earth dopants

Abstract

In ceramics, based on a solid solution of strontium barium niobate (0.7SBN) doped with cerium and gadolinium in various concentrations, an investigation was made of dielectric constant, electrical polarization, and the electrocaloric effect. For 0.7SBN ceramics, it was found that the addition of cerium (0.2%) leads to a decrease in the electrocaloric effect compared to pure 0.7SBN, and the addition of gadolinium (˂1%) to an increase in the electrocaloric effect.