Near-Room-Temperature Magnetoelectric Coupling via Spin Crossover in an Iron(II) Complex.

ABSTRACT: Magnetoelectric coupling is achieved near room temperature in a spin crossover Fe^II molecule-based compound, [Fe(1bpp)₂ ](BF₄ )₂ . Large atomic displacements resulting from Jahn-Teller distortions induce a change in the molecule dipole moment when switching between high-spin and low-spin states leading to a step-wise change in the electric polarization and dielectric constant. For temperatures in the region of bistability, the changes in magnetic and electrical properties are induced with a remarkably low magnetic field of 3 T. This result represents a successful expansion of magnetoelectric spin crossovers towards ambient conditions. Moreover, the observed 0.3-0.4 mC m^-2 changes in the H-induced electric polarization suggest that the

SUBMITTER: Owczarek M 

PROVIDER: S-EPMC10099592 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature