Ferromagnetism in freestanding MoS2 nanosheets

被引：300

作者：

Gao, Daqiang ^{[1
]}

Si, Mingsu ^{[1
]}

Li, Jinyun ^{[1
]}

Zhang, Jing ^{[1
]}

Zhang, Zhipeng ^{[1
]}

Yang, Zhaolong ^{[1
]}

Xue, Desheng ^{[1
]}

机构：

[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2013年 / 8卷

关键词：

Ferromagnetism; MoS2; nanosheets; Exfoliation; THIN-LAYERS; EXFOLIATION;

D O I：

10.1186/1556-276X-8-129

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

Freestanding MoS2 nanosheets with different sizes were prepared through a simple exfoliated method by tuning the ultrasonic time in the organic solvent. Magnetic measurement results reveal the clear room-temperature ferromagnetism for all the MoS2 nanosheets, in contrast to the pristine MoS2 in its bulk form which shows diamagnetism only. Furthermore, results indicate that the saturation magnetizations of the nanosheets increase as the size decreases. Combining the X-ray photoelectron spectroscopy, transmission electron microscopy, and electron spin resonance results, it is suggested that the observed magnetization is related to the presence of edge spins on the edges of the nanosheets. These MoS2 nanosheets may find applications in nanodevices and spintronics by controlling the edge structures.

引用

页码：1 / 8

页数：8

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