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Synthesis of Ag–CoFe2O4 dimer colloidal nanoparticles and enhancement of their magnetic response
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sharma, Sanjeev Kumar Lopes, G. Vargas, José M. Socolovsky, Leandro Martín Pirota, Kleber Roberto Knobel, Marcelo |
| Copyright Year | 2011 |
| Abstract | This paper reports the structural and magnetic properties of Ag–CoFe2O4 colloidal dimer nanoparticles (NPs) synthesized using a two-step solution-phase route. Ag NPs were used as seeds to grow Ag–CoFe2O4 dimer NPs using thermal decomposition of metallic precursor. By means of temperature and field dependent dc magnetization measurements, it is found that the silver due to its interface with CoFe2O4 particles leads to thermal stabilization of the dimer NPs superior as compared to CoFe2O4 alone. Our results show enhancement of the magnetic anisotropy and a large coercivity at 2 K for dimer NPs, which could be ascribed to interface effect between Ag and CoFe2O4 components and the related structural defects. |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.3556771 |
| Volume Number | 109 |
| Alternate Webpage(s) | http://repositorio.unicamp.br/bitstream/REPOSIP/109013/1/2-s2.0-79955420663.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.3556771 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
