A highly polarizable concentrated dipole glass for ultrahigh energy storage.

ABSTRACT: Relaxor ferroelectrics are highly desired for pulse-power dielectric capacitors, however it has become a bottleneck that substantial enhancements of energy density generally sacrifice energy efficiency under superhigh fields. Here, we demonstrate a novel concept of highly polarizable concentrated dipole glass in delicately-designed high-entropy (Bi_1/3Ba_1/3Na_1/3)(Fe_2/9Ti_5/9Nb_2/9)O₃ ceramic achieved via substitution of multiple heterovalent ferroelectric-active principal cation species on equivalent lattice sites. The atomic-scaled polar heterogeneity of dipoles with different polar vectors between adjacent unit cells enables diffuse reorientation process but disables appreciable growth with electric fields. These u

SUBMITTER: Fu J 

PROVIDER: S-EPMC11347673 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature