Abstract
Control over the magnetic interactions in magnetic nanoparticles (MNPs) is a crucial issue to the future development of nanometer-sized integrated “spintronic” applications. Here, we have developed a nanohybrid structure to achieve room temperature ferromagnetism, via a facile, effective, and reproducible solvothermal synthesis method. The plan has been put onto cobalt (Co) NPs, where the growth of Co NPs on the surface of reduced graphene oxide (rGO) nanosheets switches the magnetic interactions from superparamagnetic to ferromagnetic at room temperature. Switching-on ferromagnetism in this nanohybrid may be due to the hybridization between unsaturated 2pz orbitals of graphene and 3d orbitals of Co, which promotes ferromagnetic long-range ordering. The ferromagnetic behavior of Co-rGO nanohybrid makes it excellent material in the field of spintronics, catalysis, and magnetic resonance imaging.
| Original language | English |
|---|---|
| Article number | 166 |
| Journal | Nanoscale Research Letters |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| State | Published - 17 Aug 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020, The Author(s).
Funding
We thank AIRF-JNU for providing research facilities. ANY thanks UGC for JRF fellowship. This work was financially supported from SERB, Govt. of India under the project number EEQ/2016/000652. Acknowledgements
| Funders | Funder number |
|---|---|
| University Grants Committee | |
| Science and Engineering Research Board |
Keywords
- Carbon materials
- Ferromagnetism
- Nanoparticles