Artificial Room‐Temperature Ferromagnetism of Bulk van der Waals VSe<sub>2</sub>

Jinhyoung Lee; Gunhyoung Kim; Hyunho Seok; Hyunbin Choi; Hyeonjeong Lee; Seokchan Lee; Geonwook Kim; Hyunho Kim; Seowoo Son; Sihoon Son; Dongho Lee; Hosin Hwang; Hyelim Shin; Sujeong Han; Geumji Back; Alexina Ollier; Yeon‐Ji Kim; Lei Fang; Gyuho Han; Goo‐Eun Jung; Youngi Lee; Hyeong‐U Kim; Kenji Watanabe; Takashi Taniguchi; Wonjun Shin; Suraj Cheema; Andreas Heinrich; Won‐Jun Jang; Taesung Kim

doi:10.1002/advs.202504746

Journal article Artificial Room‐Temperature Ferromagnetism of Bulk van der Waals VSe₂

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Advanced Science - 2025 - Lee - Artificial Room‐Temperature Ferromagnetism of Bulk van der Waals VSe2.pdf

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Jinhyoung Lee, Gunhyoung Kim, Hyunho Seok, Hyunbin Choi, Hyeonjeong Lee, Seokchan Lee, Geonwook Kim, Hyunho Kim, Seowoo Son, Sihoon Son, Dongho Lee, Hosin Hwang, Hyelim Shin, Sujeong Han, Geumji Back, Alexina Ollier, Yeon‐Ji Kim, Lei Fang, Gyuho Han, Goo‐Eun Jung, Youngi Lee, Hyeong‐U Kim, Kenji Watanabe, Takashi Taniguchi, Wonjun Shin, Suraj Cheema, Andreas Heinrich, Won‐Jun Jang, Taesung Kim. Artificial Room‐Temperature Ferromagnetism of Bulk van der Waals VSe₂. Advanced Science. 2025, 12 (34), e04746. https://doi.org/10.1002/advs.202504746

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(abstract)

Originating from spin and orbital motion, van der Waals (vdW) ferromagnetism has emerged as a significant platform to experimentally access the fundamental physics of magnetism in reduced dimensions, including quantum computing, sensing, and data storage. However, currently, available vdW ferromagnetic materials can be achieved with mechanical exfoliation and low-temperature operation, which completely limits the monolithic integration of vdW ferromagnets with other functional materials. Nonetheless, the direct synthesis of room-temperature vdW ferromagnets has not been achieved commercially, owing to the imprecise control of the layer-by-layer growth, high-temperature synthesis, and low yield. To overcome these limitations, herein, an artificial vdW ferromagnetic platform has been reported, which activates the nano-crystallization and its corresponding ferromagnetism in bulk VSe2 via Ar + H2S plasma sulfurization. Sweeping the magnetic field, vdW ferromagnetism has been spatially resolved, which experimentally correlates with magnetization reversal behavior and domain pinning effects. Furthermore, nano-crystallization of VSe2 is clearly validated with transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and selected area diffraction analysis. In conclusion, it is envisioned that the artificial vdW ferromagnetic platform can artificially inject the ferromagnetism in bulk vdW VSe2, which has not been possible previously.

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Creative Commons BY Attribution 4.0 International

Keyword: van der Waals ferromagnetism, room-temperature , VSe2

Date published: 2025-05-30

Publisher: Wiley

Journal:

Advanced Science (ISSN: 21983844) vol. 12 issue. 34 e04746

Funding:

National Research Foundation of Korea
Ministry of Education 2022R1A3B1078163
Institute for Basic Science IBS‐R027‐D1
National Research Foundation
Ministry of Science and ICT, South Korea RS‐2024‐00437142
Ministry of Trade, Industry and Energy 1415187584
Korea Evaluation Institute of Industrial Technology 20024772

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1002/advs.202504746

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Updated at: 2026-02-16 16:30:43 +0900

Published on MDR: 2026-02-16 13:57:34 +0900

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