Correlation between phase compatibility and efficient energy conversion in Zr-doped Barium Titanate.

ABSTRACT: Recent demonstrations of both heat-to-electricity energy conversion devices and electrocaloric devices based on first-order ferroelectric phase transformations identify the lowering of hysteresis and cyclic reversibility of the transformation as enabling criteria for the advancement of this technology. These demonstrations, and recent studies of the hysteresis of phase transformations in oxides, show that satisfying conditions of supercompatibility can be useful for lowering hysteresis, but with limitations for systems with only a few variants of the lower symmetry phase. In particular, it is widely accepted that in a classic cubic-to-tetragonal phase transformation, with only three tetragonal variants having only six twin systems, tuning for improved crystallographic compatibility will be

SUBMITTER: Wegner M 

PROVIDER: S-EPMC7044276 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature