Title :
Use of the photoacoustic spectroscopy for surface characterization of nanometer-sized cobalt ferrite particles
Author :
Morais, P.C. ; Silveira, L.B. ; Santos, J.G. ; Oliveira, A.C. ; Tronconi, A.L. ; Santos, R.L. ; Lima, E.C.D. ; Marchetti, J.M. ; Tedesco, A.C.
Author_Institution :
Inst. de Fisica, Brasilia Univ., Brazil
Abstract :
Cobalt ferrite nanoparticles were synthesized by chemical co-precipitation of aqueous iron(III) and cobalt(II) in alkaline medium. Preliminary characterization of the as produced nanoparticles was performed by X-ray measurements. Surface-uncoated and surface-coated nanoparticles were then subjected to photoacoustic spectroscopy and the corresponding spectra was analyzed.
Keywords :
coatings; cobalt compounds; ferrites; magnetic particles; nanoparticles; photoacoustic spectra; precipitation (physical chemistry); CoFe2O4; X-ray measurements; coprecipitation; nanometer-sized cobalt-ferrite particles; nanoparticle; photoacoustic spectroscopy; surface characterization; surface coating; Biomedical optical imaging; Chemicals; Coatings; Magnetic liquids; Magnetic properties; Nanoparticles; Optical surface waves; Quantum dots; Solids; Spectroscopy;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463772
