IMN

Biblio. IMN

Référence en vue solo

Pana, O., Teodorescu, C. M., Chauvet, O., Payen, C., Macovei, D., Turcu, R., Soran, M. L., Aldea, N. & Barbu, L. (2007) Structure, morphology and magnetic properties of Fe-Au core-shell nanoparticles. Surf. Sci. 601 4352–4357. 
Added by: Laurent Cournède (2016-03-10 22:02:29)
Type de référence: Article
DOI: 10.1016/j.susc.2007.06.024
Numéro d'identification (ISBN etc.): 0039-6028
Clé BibTeX: Pana2007
Voir tous les détails bibliographiques
Catégories: MIOPS, PMN
Mots-clés: biomedical applications, Core-shell, field, gold, nanomagnetism, nanoparticles
Créateurs: Aldea, Barbu, Chauvet, Macovei, Pana, Payen, Soran, Teodorescu, Turcu
Collection: Surf. Sci.
Consultations : 9/404
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
The aim of the present work is the investigation of the core-shell Fe@Au nanoparticles obtained by the inverse micelles method. Also hybrid structures between Fe@Au nanoparticles and the well-known conducting polymer polypyrrole (PPY) were obtained and investigated. The properties of the composites were investigated by TEM, HRTEM, X-ray diffraction (XRD), X-ray Photoelectron spectroscopy (XPS) and magnetization measurements. The TEM, HRTEM measurements show that two categories of core-shell nanoparticles with mean diameters of 5 nm and 25 nm, respectively, are formed. The XPS investigations of the core-shell Fe@Au nanoparticles indicate that besides Fe-0 inside the cores, small amounts of Fen,111, located onto the gold surface were also formed during the samples preparation. The magnetization of the investigated nanocomposites measured versus increasing and decreasing magnetic field shows no hysteresis loop, this behavior being consistent with a superparamagnetic behavior. The behavior of the SQUID magnetization vs. temperature under field cooled (FC) and zero field cooled (ZFC) at 0.1 T magnetic field for Fe@Au nanoparticles confirmed the existence of superparamagnetism. The superparamagnetic model was used to fit the experimental magnetization vs. applied magnetic field as it was measured by SQUID up to 5 T. (C) 2007 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
wikindx 4.2.2 ©2014 | Références totales : 2608 | Requêtes métadonnées : 62 | Exécution de script : 0.1145 secs | Style : Harvard | Bibliographie : Bibliographie WIKINDX globale