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Type: Artigo
Title: The Influence Of Chelating Agent On The Structural And Magnetic Properties Of Cofe2o4 Nanoparticles
Author: Pedra
P. P.; Silva Filho
J. L.; Lima
R. J. S.; Sharma
S. K.; Moura
K. O.; Duque
J. G. S.; Meneses
C. T.
Abstract: We have studied the influence of chelating agents (glycerin and sucrose) on the structural and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles synthesized via co-precipitation method. The Rietveld refinements from X-ray diffraction patterns confirm that all samples are single phase identified in a cubic crystalline system belonging to the space group Fd-3m. Besides, we have verified that the addition of chelating agents produces a decreasing in the particles average size from 14(2) to 5(1) nm. Magnetization measurements as a function of temperature show a decrease in the blocking temperature (T-B) to sample obtained with addition of sucrose. A superparamagnetic behavior at room temperature was observed by magnetic measurements as function of field in the sample with 0.020 mol/L of sucrose. The results show that character chelating of sucrose reduces the coalescence effect and magnetic interaction in the CoFe2O4 nanoparticles. These results suggest that sucrose could be an alternative to control the structural and magnetic properties of other oxides nanoparticles.
Subject: Co-precipitation Synthesis
Editor: Amer Scientific Publishers
Citation: Journal Of Nanoscience And Nanotechnology. Amer Scientific Publishers, v. 16, p. 4943 - 4947, 2016.
Rights: fechado
Identifier DOI: 10.1166/jnn.2016.12098
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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