Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics.

ABSTRACT: The need for more energy-efficient and environmentally-friendly alternatives in the refrigeration industry to meet global emission targets has driven efforts towards materials with a potential for solid state cooling. Adiabatic depolarisation cooling, based on the electrocaloric effect (ECE), is a significant contender for efficient new solid state refrigeration techniques. Some of the highest ECE performances reported are found in compounds close to the morphotropic phase boundary (MPB). This relationship between performance and the MPB makes the ability to tune the position of the MPB an important challenge in electrocaloric research. Here, we report direct ECE measurements performed on MPB tuned NBT-06BT bulk ceramics with a combination of A-site substitutions. We successfully shift the

SUBMITTER: Le Goupil F 

PROVIDER: S-EPMC4911558 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature