Atomistic real-space observation of the van der Waals layered structure and tailored morphology in VSe 2

Sunghun Lee, Jinsu Kim, Yun Chang Park, Seung Hyun Chun

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Two-dimensional (2D) transition metal dichalcogenides with van der Waals gaps have attracted much attention due to their peculiarly distinctive physical properties from their bulk counterparts. Among them, vanadium diselenide (VSe 2 ) has been considered to be a promising candidate for future spintronic devices, as room temperature ferromagnetism was reported recently. However, detailed crystallography and properties of VSe 2 nanosheets have been less explored. Here, we report the atomistic real-space observation of the van der Waals layered structure of VSe 2 for the first time. Furthermore, simply by controlling the carrier gas flow rate, a morphological variation of the surface area and thickness of VSe 2 nanosheets was observed. The room temperature ferromagnetic feature of single VSe 2 nanosheets was also revealed by magnetic force microscopy measurements. Our findings will play a significant role in the research of intrinsic 2D ferromagnetic materials.

Original languageEnglish
Pages (from-to)431-436
Number of pages6
JournalNanoscale
Volume11
Issue number2
DOIs
StatePublished - 14 Jan 2019

Bibliographical note

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

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