Direct Imaging of Antiferromagnet-Ferromagnet Phase Transition in van der Waals Antiferromagnet CrSBr

Jingjing Yu, Daxiang Liu, Zhenyu Ding, Yanan Yuan, Jiayuan Zhou, Fangfang Pei, Haolin Pan, Tianping Ma, Feng Jin, Lingfei Wang, Wenguang Zhu, Shouguo Wang, Yizheng Wu, Xue Liu, Dazhi Hou, Yang Gao, Ziqiang Qiu, Mengmeng Yang, Qian Li

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The advent of van der Waals (vdW) ferromagnetic (FM) and antiferromagnetic (AFM) materials offers unprecedented opportunities for spintronics and magneto-optic devices. Combining magnetic Kerr microscopy and density functional theory calculations, the AFM-FM transition is investigated and a surprising abnormal magneto-optic anisotropy in vdW CrSBr associated with different magnetic phases (FM, AFM, or paramagnetic state) is discovered. This unique magneto-optic property leads to different anisotropic optical reflectivity from different magnetic states, permitting direct imaging of the AFM Néel vector orientation and the dynamic process of the AFM-FM transition within a magnetic field. Using Kerr microscopy, not only the domain nucleation and propagation process is imaged but also the intermediate spin-flop state in the AFM-FM transition is identified. The unique magneto-optic property and clear identification of the dynamics process of the AFM-FM phase transition in CrSBr demonstrate the promise of vdW magnetic materials for future spintronic technology.
Original languageEnglish (US)
JournalAdvanced Functional Materials
StatePublished - Sep 28 2023
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2023-10-02
Acknowledged KAUST grant number(s): ORA-CRG10-2021-4665
Acknowledgements: The project was primarily supported by National Natural Science Foundation of China (grant nos. 12174364, 12104003, 12241406), the Fundamental Research Funds for the Central Universities (no. wk2310000104), the USTC Research Funds of the Double First-Class Initiative (no. YD2140002004), Users with Excellence Program of Hefei Science Center CAS (no. 2021HSC-UE003), Open Funds of Hefei National Research Center for Physical Sciences at the Microscale (no. KF2021001). Z.Q.Q. acknowledges the support of US Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract no. DE-AC02-05CH11231 (van der Waals heterostructures program, KCWF16), Future Materials Discovery Program through the National Research Foundation of Korea (no. 2015M3D1A1070467), Science Research Center Program through the National Research Foundation of Korea (no. 2015R1A5A1009962), and King Abdullah University of Science and Technology (KAUST) under Award no. ORA-CRG10-2021-4665. Y.G., Z.Y.D., and W.G.Z. were supported by the National Key R&D Program of China (2022YFA1403502, 2019YFA0210004), the Strategic Priority Research Program of Chinese Academy of Sciences (XDB30000000), and Fundamental Research Funds for the Central Universities (grant nos. WK2340000102, WK3510000013). This work was partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication. This research used resources of Beamlines XMCD-A and XMCD-B (Soochow Beamline for Energy Materials) at NSRL.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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