Room temperature ferromagnetism in partially hydrogenated epitaxial graphene

Lanfei Xie*, Xiao Wang, Jiong Lu, Zhenhua Ni, Zhiqiang Luo, Hongying Mao, Rui Wang, Yingying Wang, Han Huang, Dongchen Qi, Rong Liu, Ting Yu, Zexiang Shen, Tom Wu, Haiyang Peng, Barbaros Özyilmaz, Kianping Loh, Andrew T.S. Wee, Ariando, Wei Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

124 Scopus citations


We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC (0001). The presence of ferromagnetism was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism on the epitaxial graphene and the origin of room temperature ferromagnetism. The partial hydrogenation induces the formation of unpaired electrons in graphene, which together with the remnant delocalized π bonding network, can explain the observed ferromagnetism in partially hydrogenated epitaxial graphene.

Original languageEnglish (US)
Article number193113
JournalApplied Physics Letters
Issue number19
StatePublished - May 9 2011
Externally publishedYes

Bibliographical note

Funding Information:
The authors thank A. H. Castro Neto and V. M. Pereira for their helpful discussions, and acknowledge the support from NRF-CRP Grant “Graphene and Related Materials and Devices,” and “Tailoring Oxide Electronics by Atomic Control,” NUS cross-faculty grant, the ARF Grant Nos. R-143-000-406-112, R-143-000-440-112, and R143-000-452-101.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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