Magnetic molybdenum disulfide nanosheet films

被引：235

作者：

Zhang, Jia

Soon, Jia Mei

Loh, Kian Ping

Yin, Jianhua

Ding, Jun

Sullivian, Michael B.

Wu, Ping

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117528, Singapore

[3] Natl Univ Singapore, Inst High Performance Comp, Singapore 117528, Singapore

来源：

NANO LETTERS | 2007年 / 7卷 / 08期

关键词：

D O I：

10.1021/nl071016r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bulk molybdenum disulfide is known to be a nonmagnetic material. We have synthesized edge-oriented MoS2 nanosheet-like films that exhibit weak magnetism (similar to 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.

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收藏

页码：2370 / 2376

页数：7

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