Magnetoelectric bistability of molecular ferroic solids

摘要

Organic multiferroics showing electrical and magnetic bistability on a molecular scale are essential as the foundation for miniaturized logic gates and memory devices. However, low Curie temperature in organic multiferroics limited their practical applications in molecular electronics. Here we suggest a different magnetoelectric coupling approach through organic multiferroic composites. We show that molecular ferroic solids exhibit switchable electrical, dipole and magnetic bistability around room temperature. Switchable magnetoelectricity is seen under laser shock impact, as well as magnetic anomalies around ferroelectric Curie temperature. The coupling between charge, dipole and spin order parameters enables tailoring of the magnetoelectricity and conductivity in molecular ferroic solids.