Synthesis and characterization of monodisperse magnetic nanoparticles

• Grant number: 06/02749-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: September 01, 2006
• End date: August 31, 2008
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Hercílio Rodolfo Rechenberg
• Grantee: Amanda Defendi Arelaro
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Nanoparticles of magnetic materials, particularly iron oxides, have been increasing relevant for fundamental magnetism investigations and for biomedical applications. In such studies, the particle size distribution in a given sample (dispersion) must be as narrow as possible, in order to ensure a good control of magnetic properties. In this work we propose to synthesize nanocrystalline samples of magnetite (Fe3O4) and other ferrites by means of a recently described chemical method, which has been successful in producing nanoparticle samples of controlled and homogeneous sizes. The method is based on the chemical reaction of Fe(acac)3 with phenyl ether, oleic acid and a long-chain alcohol at temperatures higher than 200 C. The obtained materials will be characterized by x-ray diffraction, transmission electron microscopy, VSM and SQUID magnetometry, and Mössbauer spectroscopy.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ARELARO, Amanda Defendi. Sysnthesis and characterization of fenites nanoparticles. 2008. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Física (IF/SBI) São Paulo.