Electric polarization reversal and nonlinear magnetoelectric coupling in the honeycomb antiferromagnet 
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 single crystal

Zhang, J. H.; Tang, Y. S.; Liu, Lin; Li, L. Y.; Zhou, G. Z.; Yang, Bo; Huang, Lin; Li, X. Y.; Li, G. Y.; Zheng, Shuhan; Liu, M. F.; Zeng, Min; Wu, Di; Yan, Z. B.; Huang, Xiaokun; Chen, C.; Jiang, Xiang Ping; Liu, J.-M.

doi:10.1103/physrevb.107.024108

Phys. Rev. B

2023

DOI: 10.1103/physrevb.107.024108

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Electric polarization reversal and nonlinear magnetoelectric coupling in the honeycomb antiferromagnet Fe4Nb2O9 single crystal

J. H. Zhang

Y. S. Tang

Lin Liu

et al.

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Cited by 6 publications

References 41 publications

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Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet

Xu,

Hao,

Peng

et al. 2023

Nat Commun

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Magnetic toroidicity is an uncommon type of magnetic structure in solid-state materials. Here, we experimentally demonstrate that collinear spins in a material with R-3 lattice symmetry can host a significant magnetic toroidicity, even parallel to the ordered spins. Taking advantage of a single crystal sample of CoTe6O13 with an R-3 space group and a Co2+ triangular sublattice, temperature-dependent magnetic, thermodynamic, and neutron diffraction results reveal A-type antiferromagnetic order below 19.5 K, with magnetic point group -3′ and k = (0,0,0). Our symmetry analysis suggests that the missing mirror symmetry in the lattice could lead to the local spin canting for a toroidal moment along the c axis. Experimentally, we observe a large off-diagonal magnetoelectric coefficient of 41.2 ps/m that evidences the magnetic toroidicity. In addition, the paramagnetic state exhibits a large effective moment per Co2+, indicating that the magnetic moment in CoTe6O13 has a significant orbital contribution. CoTe6O13 embodies an excellent opportunity for the study of next-generation functional magnetoelectric materials.

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Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet

Xu,

Hao,

Peng

et al. 2023

Nat Commun

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Weak ferromagnetism and magnetoelectric coupling in van der Waals antiferromagnet MnPSe3

Zhang,

Lin,

Zheng

et al. 2024

Applied Physics Letters

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With the discovery of two-dimensional (2D) ferroelectricity and ferromagnetism in van der Waals (vdW) materials, there has been significant interest in 2D multiferroics. Herein, we report the occurrence of weak ferromagnetism and magnetoelectricity in vdW antiferromagnet MnPSe3 single crystals. Our results demonstrate that MnPSe3 undergoes an antiferromagnetic transition at the Néel temperature TN = 70 K with weak ferromagnetism along the [1–10] direction. Detailed magnetoelectric (ME) data show that MnPSe3 exhibits a linear ME tensor αij with nine nonzero components. Additionally, a magnetically induced electric polarization as large as 98.5 μC/m2 is observed along the [110] direction, with a ME coefficient of 13.5 ps/m at 10 K for a magnetic field of 9 T applied along the [110] direction. Importantly, we discuss our experiments based on symmetry and microscopic analysis, thereby suggesting that the spin-dependent p-d hybridization mechanism plays an important role in the emergence of magnetic-field-induced ferroelectricity. Hence, our findings provide insights for exploring the ME coupling in vdW materials.

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Anisotropic magnetoelectric effect in quasi-one-dimensional antiferromagnet Cu3Mo2O9

Huang,

Hua,

et al. 2024

Applied Physics Letters

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Using purely electrical methods to manipulate magnetic property poses a significant obstacle in the development of advanced information technology. Multiferroic materials, distinguished by their magnetoelectric (ME) effect, offer a promising way to overcome this challenge by enabling the electric control of magnetic ordering or magnetization. Here, we have synthesized Cu3Mo2O9 single crystals and investigated the anisotropic ME effect within the quasi-one-dimensional spin system. The simultaneous occurrence of ferroelectric (FE) polarization and dielectric anomaly at the Néel temperature (TN) of ∼7.9 K suggests the presence of spin-driven FE property in Cu3Mo2O9. The phase transition temperatures undergo a shift toward lower values for H//c and remain constant for H//a and H//b, indicating anisotropic ME effect. The ME effect demonstrates nonlinear behavior as the magnetic field increases. Near a critical point (T = 7 K and μ0H = 5.6 T), a giant magnetodielectric coupling parameter reaching 374% is observed for H//c, which can be ascribed to the strong spin–phonon coupling and the magnetic field induced change of FE polarization. In the context of charge redistribution without magnetic superlattice, the FE property is analyzed. Moreover, remarkable magnetic control of FE polarization and electric control of magnetization are obtained. The temporal evolution of both polarization and magnetization indicates the stable ME mutual control, suggesting potential applications of Cu3Mo2O9 as a promising multiferroic material.

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Electric polarization reversal and nonlinear magnetoelectric coupling in the honeycomb antiferromagnet Fe4Nb2O9 single crystal

Cited by 6 publications

References 41 publications

Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet

Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet

Weak ferromagnetism and magnetoelectric coupling in van der Waals antiferromagnet MnPSe3

Anisotropic magnetoelectric effect in quasi-one-dimensional antiferromagnet Cu3Mo2O9

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