TY - JOUR
T1 - Chemical Exfoliation toward Magnetic 2D VOCl Monolayers
AU - Villalpando, Graciela
AU - Ferrenti, Austin M.
AU - Singha, Ratnadwip
AU - Song, Xiaoyu
AU - Cheng, Guangming
AU - Yao, Nan
AU - Schoop, Leslie M.
N1 - Funding Information:
This project was supported by the Office of Naval Research (ONR) through grant number N00014-21-1-2733. Equipment used in this research was purchased with support from the Gordon and Betty Moore Foundation’s EPIQS initiative through Grant GBMF9064 and the David and Lucile Packard foundation. The authors acknowledge the sample characterization of the Imaging and Analysis Center (IAC) at Princeton University, partially supported by the Princeton Center for Complex Materials (PCCM) and the NSF-MRSEC program (MRSEC; DMR-2011750).
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022
Y1 - 2022
N2 - The diversification of magnetic two-dimensional (2D) materials holds the key to the further development of advanced technologies, such as spintronic devices and efficient data storage. However, the search for intrinsic magnetism down to the 2D limit is severely limited by the ability to reliably exfoliate large, air-stable nanosheets. Chemical exfoliation, a relatively underutilized method for delamination, offers many advantages, including a high degree of adaptability and higher yields of uniformly exfoliated materials. van der Waals (vdW) materials, in particular the family of transition-metal oxyhalides, are ideal candidates for chemical exfoliation due to their large interlayer spacing and the wide variety of interesting magnetic properties they exhibit. In this study, we employ a chemical exfoliation method to delaminate the layered antiferromagnet vanadium oxychloride (VOCl) down to the monolayer limit. The resulting nansoheets have lateral sizes of up to 20 μm, are air-stable, and can be easily isolated. Magnetic characterization was performed throughout the exfoliation process, tracking the changes in magnetic behavior among bulk VOCl, its lithiated intercalate, and the restacked nanosheet pellet. The results from this work demonstrate the potential of chemical exfoliation, along with illustrating the effects of low dimensionality on magnetic properties.
AB - The diversification of magnetic two-dimensional (2D) materials holds the key to the further development of advanced technologies, such as spintronic devices and efficient data storage. However, the search for intrinsic magnetism down to the 2D limit is severely limited by the ability to reliably exfoliate large, air-stable nanosheets. Chemical exfoliation, a relatively underutilized method for delamination, offers many advantages, including a high degree of adaptability and higher yields of uniformly exfoliated materials. van der Waals (vdW) materials, in particular the family of transition-metal oxyhalides, are ideal candidates for chemical exfoliation due to their large interlayer spacing and the wide variety of interesting magnetic properties they exhibit. In this study, we employ a chemical exfoliation method to delaminate the layered antiferromagnet vanadium oxychloride (VOCl) down to the monolayer limit. The resulting nansoheets have lateral sizes of up to 20 μm, are air-stable, and can be easily isolated. Magnetic characterization was performed throughout the exfoliation process, tracking the changes in magnetic behavior among bulk VOCl, its lithiated intercalate, and the restacked nanosheet pellet. The results from this work demonstrate the potential of chemical exfoliation, along with illustrating the effects of low dimensionality on magnetic properties.
KW - antiferromagnetism
KW - chemical exfoliation
KW - lithium intercalation
KW - monolayer vanadium oxychloride
KW - two-dimensional materials
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U2 - 10.1021/acsnano.2c01858
DO - 10.1021/acsnano.2c01858
M3 - Article
C2 - 35977071
AN - SCOPUS:85136693812
SN - 1936-0851
JO - ACS Nano
JF - ACS Nano
ER -