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
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.
|Subjects:||Physical Science > Nanomagnetics|
Material Science > Nanostructured materials
|Deposited On:||07 Aug 2009 09:42|
|Last Modified:||07 Aug 2009 09:42|
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