Nano Archive

Magnetic molybdenum disulfide nanosheet films

Zhang, Jia and Soon, Jia Mei and Loh, Kian Ping and Yin, Jianhua and Ding, Jun and Sullivian, Michael B. and Wu, Ping (2007) Magnetic molybdenum disulfide nanosheet films. NANO LETTERS, 7 (8). pp. 2370-2376.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl071016r

Abstract

Bulk molybdenum disulfide is known to be a nonmagnetic material. We have synthesized edge-oriented MoS2 nanosheet-like films that exhibit weak magnetism (~1−2 emu/g) and 2.5% magnetoresistance effects with a Curie temperature of 685 K. The magnetization is related to the presence of edge spins on the prismatic edges of the nanosheets. Spin-polarized calculations were performed on triangular-shaped cluster models in order to provide insight into the origin of magnetism on the edges as well as the size-property correlation in these MoS2 nanosheets. Our results imply that nanostructured films with a high density of edge spins can give rise to magnetism even though the bulk material is nonmagnetic.

Item Type:Article
Subjects:Physical Science > Nanomagnetics
Material Science > Nanostructured materials
ID Code:6352
Deposited By:IoN
Deposited On:07 Aug 2009 09:42
Last Modified:07 Aug 2009 09:42

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