title: Large, Linear, and Tunable Positive Magnetoresistance of Mechanically Stable Graphene Foam-Toward High-Performance Magnetic Field Sensors.
abstract: Here, we present the first observation of magneto-transport properties of graphene foam (GF) composed of a few layers in a wide temperature range of 2-300 K. Large room-temperature linear positive magnetoresistance (PMR ≈ 171% at B ≈ 9 T) has been detected. The largest PMR (∼213%) has been achieved at 2 K under a magnetic field of 9 T, which can be tuned by the addition of poly(methyl methacrylate) to the porous structure of the foam. This remarkable magnetoresistance may be the result of quadratic magnetoresistance. The excellent magneto-transport properties of GF open a way toward three-dimensional graphene-based magnetoelectronic devices.
authors.forename: Rizwan Ur Rehman
authors.identifier: http://orcid.org/0000-0002-8729-6208
authors.initials: RU
authors.lastname: Sagar
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Galluzzi
authors.affiliation: Institute of Physics, Chinese Academy of Sciences , Beijing, 100190, PR China.
authors.forename: Caihua
authors.initials: C
authors.lastname: Wan
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University , Hangzhou 310027, PR China.
authors.forename: Khurram
authors.initials: K
authors.lastname: Shehzad
authors.forename: Sachin T
authors.initials: ST
authors.lastname: Navale
authors.affiliation: Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, PR China.
authors.forename: Tauseef
authors.initials: T
authors.lastname: Anwar
authors.affiliation: School of Physical Sciences, Swami Ramanand Teerth Marathwada University , Nanded 431606, India.|Department of Chemistry, College of Science, Bld-5, King Saud University , Riyadh, Saudi Arabia.
authors.forename: Rajaram S
authors.initials: RS
authors.lastname: Mane
authors.affiliation: College of Science, China Three Gorges University , Yichang 443002, PR China.
authors.forename: Hong-Guang
authors.initials: HG
authors.lastname: Piao
authors.affiliation: Department of Chemistry, Quaid-i-Azam University , Islamabad 45320, Pakistan.
authors.forename: Abid
authors.initials: A
authors.lastname: Ali
authors.forename: Florian J
authors.initials: FJ
authors.lastname: Stadler
keywords: chemical vaport deposition and magnetoresistance; graphene foam