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Type: Artigo de evento
Title: Synthesis Of Ag-cofe2o4 Dimer Colloidal Nanoparticles And Enhancement Of Their Magnetic Response
Author: Sharma S.K.
Lopes G.
Vargas J.M.
Socolovsky L.M.
Pirota K.R.
Knobel M.
Abstract: This paper reports the structural and magnetic properties of Ag-CoFe 2O4 colloidal dimer nanoparticles (NPs) synthesized using a two-step solution-phase route. Ag NPs were used as seeds to grow Ag-CoFe 2O4 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 CoFe 2O4 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 CoFe 2O4 components and the related structural defects. © 2011 American Institute of Physics.
Citation: Journal Of Applied Physics. , v. 109, n. 7, p. - , 2011.
Rights: aberto
Identifier DOI: 10.1063/1.3556771
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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