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Ferroelectricity-driven strain-mediated magnetoelectric coupling in two-dimensional multiferroic heterostructure
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Journal Article
Ferroelectricity-driven strain-mediated magnetoelectric coupling in two-dimensional multiferroic heterostructure
2025
Overview
In the post-Moore era, CMOS technology faces challenges in storage and power consumption. Two-dimensional van der Waals ferromagnets, with their atomically sharp interfaces, enable heterostructure with ferroelectric materials. Through strong magnetoelectric coupling effects, they provide an ideal platform for developing highly efficient magnetoelectric interfaces. Leveraging this ideal platform, this study proposes a strain-modulation strategy based on vertically integrated two-dimensional van der Waals multiferroic heterojunctions Fe
3
GaTe
2
/P(VDF-TrFE) to address these challenges. This structure utilizes the inverse piezoelectric effect of ferroelectric polymers to induce strain. Through magnetoelectric coupling, the heterojunction achieves non-volatile reconfiguration of the magnetic anisotropy constant of Fe
3
GaTe
2
at room temperature. This enables fully reversible electrical control of the anomalous Hall resistance and inverter functionality. Device integration validated reconfigurable logic gates and half-adder circuits, demonstrating ultra-low energy consumption (0.5 aJ), nanosecond-scale write speeds (5 ns), and high operational stability.
Two-dimensional van der Waals ferromagnetic materials can achieve efficient integration with ferroelectric materials. The authors propose a strain-modulation strategy based on multiferroic heterostructure Fe
3
GaTe
2
/P(VDF-TrFE) to achieve low power operation.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
