Room-temperature ferroelectric and ferroelastic orders coexisting in a new tetrafluoroborate-based perovskite.

ABSTRACT: The coexistence of multiferroic orders has attracted increasing attention for its potential applications in multiple-state memory, switches, and computing, but it is still challenging to design single-phase crystalline materials hosting multiferroic orders at above room temperature. By utilizing versatile ABX₃-type perovskites as a structural model, we judiciously introduced a polar organic cation with easily changeable conformations into a tetrafluoroborate-based perovskite system, and successfully obtained an unprecedented molecular perovskite, (homopiperazine-1,4-diium)[K(BF₄)₃], hosting both ferroelectricity and ferroelasticity at above room temperature. By using the combined techniques of variable-temperature single-crystal X-ray structural analyses, d

SUBMITTER: Chen XX 

PROVIDER: S-EPMC8246093 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature