Room-Temperature Ferroelectric Control of 2-D Layered Magnetism

Abstract

Electrical tuning of magnetism is crucial for developing fast, compact, ultralow-power electronic devices. Multiferroics offer significant potential due to their ability to control magnetism via an electric field through magnetoelectric (ME) coupling, especially in layered ferroelectric/ferromagnet heterostructures. A key challenge is achieving reversible and stable switching between distinct magnetic states using voltage control. In this work, we present ferroelectric tuning of room-temperature magnetism in a 2-D layered ferromagnet. The energy-efficient control consumes less than 1 fJ per operation, which is normally in the order of several $10^{-3}$ fJ, resulting in a ~43% change in magnetization. This tunable multiferroic interface and associated devices provide promising opportunities for next-generation reconfigurable communication systems, spintronics, sensors, and memories.