Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co4Ta2O9

Nara Lee; Dong Gun Oh; Sungkyun Choi; Jae Young Moon; Jong Hyuk Kim; Hyun Jun Shin; Kwanghyo Son; Jürgen Nuss; Valery Kiryukhin; Young Jai Choi

doi:10.1038/s41598-020-69117-5

Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co₄Ta₂O₉

Nara Lee, Dong Gun Oh, Sungkyun Choi, Jae Young Moon, Jong Hyuk Kim, Hyun Jun Shin, Kwanghyo Son, Jürgen Nuss, Valery Kiryukhin, Young Jai Choi

Department of Physics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for innovative technological applications. A class of antiferromagnetic honeycomb lattices compounds, A₄B₂O₉ (A = Co, Fe, Mn; B = Nb, Ta), have been explored owing to the occurrence of linear magnetoelectricity. From our investigation of magnetoelectricity on single crystalline Co₄Ta₂O₉, we discovered strongly nonlinear and antisymmetric magnetoelectric behavior above the spin-flop transition for magnetic fields applied along two orthogonal in-plane directions. This observation suggests that two types of inequivalent Co²⁺ sublattices generate magnetic-field-dependent ferroelectric polarization with opposite signs. The results motivate fundamental and applied research on the intriguing magnetoelectric characteristics of these buckled-honeycomb lattice materials.

Original language	English
Article number	12362
Journal	Scientific reports
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41598-020-69117-5
Publication status	Published - 2020 Dec 1

Bibliographical note

Funding Information:
The work at Yonsei was supported by the National Research Foundation of Korea (NRF) Grants (NRF-2017R1A5A1014862 (SRC program: vdWMRC center), NRF-2018R1C1B6006859, and NRF-2019R1A2C2002601). VK and SC were supported by the NSF, Grant No DMR-1609935. SC was also supported by the international postdoctoral scholarship at Max Planck Institute for Solid State Research, Stuttgart, Germany. The authors are grateful to Prof. G. Schütz for supporting AC measurements with the MPMS magnetometry.

Publisher Copyright:
© 2020, The Author(s).

All Science Journal Classification (ASJC) codes

General

Access to Document

10.1038/s41598-020-69117-5

Cite this

@article{46cb0c96d314477b817ae68086040fa5,

title = "Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co4Ta2O9",

abstract = "Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for innovative technological applications. A class of antiferromagnetic honeycomb lattices compounds, A4B2O9 (A = Co, Fe, Mn; B = Nb, Ta), have been explored owing to the occurrence of linear magnetoelectricity. From our investigation of magnetoelectricity on single crystalline Co4Ta2O9, we discovered strongly nonlinear and antisymmetric magnetoelectric behavior above the spin-flop transition for magnetic fields applied along two orthogonal in-plane directions. This observation suggests that two types of inequivalent Co2+ sublattices generate magnetic-field-dependent ferroelectric polarization with opposite signs. The results motivate fundamental and applied research on the intriguing magnetoelectric characteristics of these buckled-honeycomb lattice materials.",

author = "Nara Lee and Oh, {Dong Gun} and Sungkyun Choi and Moon, {Jae Young} and Kim, {Jong Hyuk} and Shin, {Hyun Jun} and Kwanghyo Son and J{\"u}rgen Nuss and Valery Kiryukhin and Choi, {Young Jai}",

note = "Funding Information: The work at Yonsei was supported by the National Research Foundation of Korea (NRF) Grants (NRF-2017R1A5A1014862 (SRC program: vdWMRC center), NRF-2018R1C1B6006859, and NRF-2019R1A2C2002601). VK and SC were supported by the NSF, Grant No DMR-1609935. SC was also supported by the international postdoctoral scholarship at Max Planck Institute for Solid State Research, Stuttgart, Germany. The authors are grateful to Prof. G. Sch{\"u}tz for supporting AC measurements with the MPMS magnetometry. Publisher Copyright: {\textcopyright} 2020, The Author(s).",

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AU - Lee, Nara

AU - Oh, Dong Gun

AU - Choi, Sungkyun

AU - Moon, Jae Young

AU - Kim, Jong Hyuk

AU - Shin, Hyun Jun

AU - Son, Kwanghyo

AU - Nuss, Jürgen

AU - Kiryukhin, Valery

AU - Choi, Young Jai

N1 - Funding Information: The work at Yonsei was supported by the National Research Foundation of Korea (NRF) Grants (NRF-2017R1A5A1014862 (SRC program: vdWMRC center), NRF-2018R1C1B6006859, and NRF-2019R1A2C2002601). VK and SC were supported by the NSF, Grant No DMR-1609935. SC was also supported by the international postdoctoral scholarship at Max Planck Institute for Solid State Research, Stuttgart, Germany. The authors are grateful to Prof. G. Schütz for supporting AC measurements with the MPMS magnetometry. Publisher Copyright: © 2020, The Author(s).

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for innovative technological applications. A class of antiferromagnetic honeycomb lattices compounds, A4B2O9 (A = Co, Fe, Mn; B = Nb, Ta), have been explored owing to the occurrence of linear magnetoelectricity. From our investigation of magnetoelectricity on single crystalline Co4Ta2O9, we discovered strongly nonlinear and antisymmetric magnetoelectric behavior above the spin-flop transition for magnetic fields applied along two orthogonal in-plane directions. This observation suggests that two types of inequivalent Co2+ sublattices generate magnetic-field-dependent ferroelectric polarization with opposite signs. The results motivate fundamental and applied research on the intriguing magnetoelectric characteristics of these buckled-honeycomb lattice materials.

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