Magnetism in MoS2 induced by proton irradiation

被引：200

作者：

Mathew, S. ^{[1
,2
]}

Gopinadhan, K. ^{[1
,2
]}

Chan, T. K. ^{[3
,4
]}

Yu, X. J. ^{[2
,5
]}

Zhan, D. ^{[6
]}

Cao, L. ^{[4
]}

Rusydi, A. ^{[2
,4
,5
]}

Breese, M. B. H. ^{[3
,4
,5
]}

Dhar, S. ^{[1
,2
]}

Shen, Z. X. ^{[6
]}

Venkatesan, T. ^{[1
,2
]}

Thong, John T. L. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[2] Natl Univ Singapore, NUSNNI NanoCore, Singapore 117576, Singapore

[3] Natl Univ Singapore, Dept Phys, CIBA, Singapore 117542, Singapore

[4] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[5] Natl Univ Singapore, SSLS, Singapore 117603, Singapore

[6] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 10期

关键词：

SURFACE; RAMAN; BOMBARDMENT;

D O I：

10.1063/1.4750237

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Molybdenum disulphide, a diamagnetic layered dichalcogenide solid, is found to show magnetic ordering at room temperature when exposed to a 2 MeV proton beam. The temperature dependence of magnetization displays ferrimagnetic behavior with a Curie temperature of 895 K. A disorder mode corresponding to a zone-edge phonon and a Mo valence higher than +4 has been detected in the irradiated samples using Raman and x-ray photoelectron spectroscopy, respectively. The possible origins of long-range magnetic ordering in irradiated MoS2 samples are discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4750237]

引用

页数：5

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