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Related Experiment Video

Updated: Jan 19, 2026

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Nanoparticle-Induced Anomalous Hall Effect in Graphene.

Guibin Song1, Mojtaba Ranjbar1, David R Daughton2

  • 1School of Electrical, Computer and Energy Engineering , Arizona State University , Tempe , Arizona 85287 , United States.

Nano Letters
|September 13, 2019
PubMed
Summary
This summary is machine-generated.

Researchers induced magnetism in graphene using magnetic nanoparticles, observing the anomalous Hall effect. This breakthrough expands material options for spintronic devices and patterned circuitry, moving beyond traditional ferromagnetic insulators.

Keywords:
Grapheneanomalous Hall effectferromagnetismnanoparticlesproximity effectspintronics

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Introducing magnetic properties into graphene is crucial for spintronics.
  • Proximity-induced ferromagnetism (PIFM) in graphene has been achieved using ferromagnetic insulators (FMIs).
  • Existing FMIs have limitations in growth, deposition, Curie temperature, and interface quality.

Purpose of the Study:

  • To explore alternative methods for inducing magnetic properties in graphene.
  • To investigate the feasibility of using discontinuous magnetic structures for graphene spintronics.
  • To overcome the limitations associated with traditional FMI/graphene interfaces.

Main Methods:

  • Graphene was proximity coupled to an array of magnetic nanoparticles.
  • The anomalous Hall effect (AHE) in graphene was measured.
  • Characterization of the graphene-nanoparticle interface was performed.

Main Results:

  • The anomalous Hall effect (AHE) was successfully observed in graphene coupled to magnetic nanoparticles.
  • This demonstrates induced magnetic properties in graphene via a discontinuous magnetic structure.
  • The method avoids issues associated with FMI growth and transfer.

Conclusions:

  • Graphene can exhibit proximity-induced magnetism through coupling with magnetic nanoparticles.
  • This approach significantly broadens the range of materials usable for graphene spintronics.
  • It enables new possibilities for creating patterned spintronic devices and circuitry.