Proton switching molecular magnetoelectricity
Abstract
The convergence of proton conduction and multiferroics is generating a compelling opportunity to achieve strong magnetoelectric coupling and magneto-ionics, offering a versatile platform to realize molecular magnetoelectrics. Here we describe machine learning coupled with additive manufacturing to accelerate the design strategy for hydrogen-bonded multiferroic macromolecules accompanied by strong proton dependence of magnetic properties. The proton switching magnetoelectricity occurs in three-dimensional molecular heterogeneous solids. It consists of a molecular magnet network as proton reservoir to modulate ferroelectric polarization, while molecular ferroelectrics charging proton transfer to reversibly manipulate magnetism. The magnetoelectric coupling induces a reversible 29% magnetization control at ferroelectric phase transition with a broad thermal hysteresis width of 160 K (192 K to 352 K), while a room-temperature reversible magnetic modulation is realized at a low electric field stimulus of 1 kV cm−1. The findings of electrostatic proton transfer provide a pathway of proton mediated magnetization control in hierarchical molecular multiferroics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 29, 2021
- Source ID
- 10.1038/s41467-021-24941-9
Entities
People
- Alpha T. N'Diaye
- Cheng Li
- Chi Zhou
- Christoph Boehme
- Hans Malissa
- Jaspal S. Bola
- Qiang Zhang
- Quanxi Jia
- Scott Broderick
- Shenqiang Ren
- Yong Hu
- Yulong Huang
- Zeev Valy Vardeny
- Zipeng Guo
Organizations
- Army Research Office
- United States Department of Energy