Journal
MATERIALS LETTERS
Volume 293, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.129730
Keywords
Graphene; ferromagnet; Hybridization; Weak localization; Linear magnetoresistance
Funding
- JSPS KAKENHI [19H00864]
- Materials Analysis Division, Tokyo Institute of Technology
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Grants-in-Aid for Scientific Research [19H00864] Funding Source: KAKEN
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Enhanced linear positive magnetoresistance of graphene is achieved at room temperature by depositing Co particles on the surface, which introduces strong inhomogeneity. The interfacial hybridization between graphene and Co further enhances spatial fluctuation of carrier density and mobility, leading to a higher PMR that is useful for magnetic sensing at room temperature.
Magneto-transport properties of graphene and graphene/Co have been investigated. Enhanced linear positive magnetoresistance (PMR) of graphene is obtained at room temperature by depositing Co particles on the surface, which introduces strong inhomogeneity. Graphene is still in weakly disordered regime after Co deposition as proved by weak localization effect and Raman spectra. And interfacial hybridization between graphene and Co further enhances spatial fluctuation of carrier density and mobility, inducing a higher PMR which is useful for magnetic sensing at room temperature. (c) 2021 Elsevier B.V. All rights reserved.
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