Effect of Superparamagnetic Fe3O4 Nanoparticles on Schottky Barriers of Graphene

Junran Zhang; Zhenyao Wu; Minhao Zhang; Wei Niu; Ming Gao; Ying Zhou; Wenqing Liu; Xuefeng Wang; Rong Zhang; Yongbing Xu

doi:10.1109/TMAG.2015.2436924

Effect of Superparamagnetic Fe₃O₄ Nanoparticles on Schottky Barriers of Graphene

Junran Zhang, Zhenyao Wu, Minhao Zhang, Wei Niu, Ming Gao, Ying Zhou, Wenqing Liu, Xuefeng Wang^*, Rong Zhang, Yongbing Xu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrated the effect of superparamagnetic Fe₃O₄ nanoparticles on the Schottky barriers of graphene, in which the Fe₃O₄ nanoparticles were fabricated by a hydrothermal method, and the single-layer graphene sheets were mechanically exfoliated from Kish graphite. The Fe₃O₄ nanoparticles were superparamagnetic with the saturation magnetic moment of ∼ 32 emu/g at room temperature. We have found that the Fe₃O₄ nanoparticles decorated on the graphene surface can dramatically modify the Schottky barriers of the whole devices possibly due to the magnetic stray field from the Fe₃O₄ nanoparticles in proximity to graphene. The Schottky barrier could be further tuned by the quantity of Fe₃O₄ nanoparticles.

Original language	English
Article number	2600204
Journal	IEEE Transactions on Magnetics
Volume	51
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2015.2436924
Publication status	Published - 1 Nov 2015

Keywords

FeO nanoparticles
graphene
Schottky barrier
superparamagnetism

Access to Document

10.1109/TMAG.2015.2436924

Cite this

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title = "Effect of Superparamagnetic Fe3O4 Nanoparticles on Schottky Barriers of Graphene",

abstract = "We demonstrated the effect of superparamagnetic Fe3O4 nanoparticles on the Schottky barriers of graphene, in which the Fe3O4 nanoparticles were fabricated by a hydrothermal method, and the single-layer graphene sheets were mechanically exfoliated from Kish graphite. The Fe3O4 nanoparticles were superparamagnetic with the saturation magnetic moment of ∼ 32 emu/g at room temperature. We have found that the Fe3O4 nanoparticles decorated on the graphene surface can dramatically modify the Schottky barriers of the whole devices possibly due to the magnetic stray field from the Fe3O4 nanoparticles in proximity to graphene. The Schottky barrier could be further tuned by the quantity of Fe3O4 nanoparticles.",

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T1 - Effect of Superparamagnetic Fe3O4 Nanoparticles on Schottky Barriers of Graphene

AU - Zhang, Junran

AU - Wu, Zhenyao

AU - Zhang, Minhao

AU - Niu, Wei

AU - Gao, Ming

AU - Zhou, Ying

AU - Liu, Wenqing

AU - Wang, Xuefeng

AU - Zhang, Rong

AU - Xu, Yongbing

PY - 2015/11/1

Y1 - 2015/11/1

N2 - We demonstrated the effect of superparamagnetic Fe3O4 nanoparticles on the Schottky barriers of graphene, in which the Fe3O4 nanoparticles were fabricated by a hydrothermal method, and the single-layer graphene sheets were mechanically exfoliated from Kish graphite. The Fe3O4 nanoparticles were superparamagnetic with the saturation magnetic moment of ∼ 32 emu/g at room temperature. We have found that the Fe3O4 nanoparticles decorated on the graphene surface can dramatically modify the Schottky barriers of the whole devices possibly due to the magnetic stray field from the Fe3O4 nanoparticles in proximity to graphene. The Schottky barrier could be further tuned by the quantity of Fe3O4 nanoparticles.

AB - We demonstrated the effect of superparamagnetic Fe3O4 nanoparticles on the Schottky barriers of graphene, in which the Fe3O4 nanoparticles were fabricated by a hydrothermal method, and the single-layer graphene sheets were mechanically exfoliated from Kish graphite. The Fe3O4 nanoparticles were superparamagnetic with the saturation magnetic moment of ∼ 32 emu/g at room temperature. We have found that the Fe3O4 nanoparticles decorated on the graphene surface can dramatically modify the Schottky barriers of the whole devices possibly due to the magnetic stray field from the Fe3O4 nanoparticles in proximity to graphene. The Schottky barrier could be further tuned by the quantity of Fe3O4 nanoparticles.

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