Interfacial ferromagnetism in reduced graphene oxide–ZnO nanocomposites
| Autor: | M. Muralidharan, Kamarajan Thiyagarajan, Kandasamy Sivakumar |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanostructure Oxide 02 engineering and technology 01 natural sciences law.invention chemistry.chemical_compound Magnetization symbols.namesake X-ray photoelectron spectroscopy law 0103 physical sciences Electrical and Electronic Engineering 010302 applied physics Nanocomposite Graphene 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Ferromagnetism Chemical engineering symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 29:7442-7452 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | Reduced Graphene Oxide (rGO) and rGO–ZnO nanocomposites have been successfully prepared by hydrothermal and solvothermal method, respectively. Powder XRD and Raman spectroscopy studies confirmed the formation of nanocomposites. The nanostructures of samples were imaged and found that ZnO nanoparticles covered over rGO sheets. The reduction of various oxygen containing functional groups attached on the few layered graphitic planes and the presence of oxygen vacancies in nanocomposites were confirmed by XPS. The relative contribution of PL emission bands in composites arises due to the existence of intrinsic defects. The M–H curve of rGO sheets and rGO–ZnO nanocomposites exhibit ferromagnetic behavior. The decrease of magnetization in composites owing to increases the rGO ratio leads to decrease the oxygen vacancies in the surface of ZnO nanopaticles. |
| Databáze: | OpenAIRE |
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