Large, Linear, and Tunable Positive Magnetoresistance of Mechanically Stable Graphene Foam–Toward High-Performance Magnetic Field Sensors
ACS Applied Materials & Interfaces2016Vol. 9(2), pp. 1891–1898
Citations Over TimeTop 13% of 2016 papers
Rizwan Ur Rehman Sagar, Massimiliano Galluzzi, Caihua Wan, Khurram Shehzad, S.T. Navale, Tauseef Anwar, Rajaram S. Mane, Hong‐Guang Piao, Abid Ali, Florian J. Stadler
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.
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