Large-Area Epitaxial Film Growth of van der Waals Ferromagnetic Ternary Chalcogenides
SCIE
SCOPUS
- Title
- Large-Area Epitaxial Film Growth of van der Waals Ferromagnetic Ternary Chalcogenides
- Authors
- Giri, A.; De, C.; Kumar, M.; Pal, M.; Lee, H.H.; Kim, J.S.; Cheong, S.-W.; Jeong, U.
- Date Issued
- 2021-11
- Publisher
- WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Abstract
- Following the first experimental realization of intrinsic ferromagnetism in 2D van der Waals (vdW) crystals, several ternary metal chalcogenides with unprecedented long-range ferromagnetic order have been explored. However, the synthesis of large-area 2D ternary metal chalcogenide thin films is a great challenge, and a generalized synthesis has not been demonstrated yet. Here, a quick and scalable synthesis of epitaxially aligned ferromagnetic ternary metal chalcogenide thin films (Cr2Ge2Te6, Cr2Si2Te6, Mn3Si2Te6) is reported. The synthesis is based on the flux-controlled surface diffusion of Te on metal (Cr, Mn)-deposited wafer (Ge, Si) substrates. Magnetic anisotropy study of the epitaxial ternary thin films reveals the intrinsic magnetic easy axis; out-of-plane direction for Cr2Ge2Te6 and Cr2Si2Te6, and in-plane direction for Mn3Si2Te6. In addition to the synthesis, this work creates an opportunity for transfer-free device fabrication for realizing magnetoelectronics based on the electrical control of both charge and spin degrees of freedom in 2D ferromagnetic semiconductors. ? 2021 Wiley-VCH GmbH.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/109564
- DOI
- 10.1002/adma.202103609
- ISSN
- 0935-9648
- Article Type
- Article
- Citation
- Advanced Materials, vol. 33, no. 45, 2021-11
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