Graphene enhances the magnetoresistance of FeNi3nanoparticles in hierarchical FeNi3–graphene nanocomposites
| Autor: | Gonzalo Abellán, Eugenio Coronado, Helena Prima-García |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Nanocomposite Magnetoresistance Graphene Nanoparticle Giant magnetoresistance Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Graphene nanocomposites law Materials Chemistry Hydroxide 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry C. 4:2252-2258 |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | An increase in the giant magnetoresistance of FeNi3 nanoparticles of 20 times has been observed in FeNi3–graphene nanocomposites synthesized using NiFe-layered double hydroxide hybrids as precursors. The magnetic, transport and magneto-transport properties of these nanocomposites are studied and compared with those of the pure FeNi3 nanoparticles. The hierarchical structure and hybrid composition of these magnetic nanocomposites lead to the observation of two unusual magneto-transport properties, namely (i) an enhancement in the low-field magnetoresistance effects, and (ii) a crossover from negative to positive MR upon cooling down the sample. |
| Databáze: | OpenAIRE |
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