journal article·2017-01-18Open access

Large, Linear, and Tunable Positive Magnetoresistance of Mechanically Stable Graphene Foam–Toward High-Performance Magnetic Field Sensors

Rizwan Ur Rehman Sagar, Massimiliano Galluzzi, Caihua Wan, Khurram Shehzad, Sachin 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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Research context

OpenAlex topics: Graphene research and applications · Advancements in Battery Materials · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, PR China

Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, PR China

Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, PR China

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

College of Science, China Three Gorges University, Yichang 443002, PR China

Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan

Funding

China Postdoctoral Science Foundation · King Saud University · National Natural Science Foundation of China · Shenzhen City · Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University

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