Proton switching molecular magnetoelectricity

Yong Hu, Scott Broderick, Zipeng Guo, Alpha T. N’Diaye, Jaspal S. Bola, Hans Malissa, Cheng Li, Qiang Zhang, Yulong Huang, Quanxi Jia, Christoph Boehme, Z. Valy Vardeny, Chi Zhou and Shenqiang Ren ()
Additional contact information
Yong Hu: University at Buffalo, The State University of New York
Scott Broderick: University at Buffalo, The State University of New York
Zipeng Guo: University at Buffalo, The State University of New York
Alpha T. N’Diaye: Lawrence Berkeley National Laboratory
Jaspal S. Bola: University of Utah
Hans Malissa: University of Utah
Cheng Li: Oak Ridge National Laboratory
Qiang Zhang: Oak Ridge National Laboratory
Yulong Huang: University at Buffalo, The State University of New York
Quanxi Jia: University at Buffalo, The State University of New York
Christoph Boehme: University of Utah
Z. Valy Vardeny: University of Utah
Chi Zhou: University at Buffalo, The State University of New York
Shenqiang Ren: University at Buffalo, The State University of New York

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: 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.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24941-9

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DOI: 10.1038/s41467-021-24941-9

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