SYNTHESIS, CHARACTERIZATION AND MAGNETIC PROPERTIES OF CoFe2O4 NANOPARTICLES USING PEG AS SURFACTANT

Authors

  • Sarah Briceño Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.
  • Werner Brämer-Escamilla Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela
  • Pedro Silva Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela
  • Gerzon Delgado
  • Yraida Díaz Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.
  • Eric Plaza INZIT
  • Edgar Cañizales

Abstract

Cobalt ferrite (CoFe2O4) nanoparticles were synthesized using polyethyleneglycol as surfactant in a simple reflux system and subsequently heat treated from 200°C to 800°C in N2  atmosphere. The samples were characterized using: X-ray diffraction, Infrared spectroscopy, Scanning electron microscopy, Transmission electron microscopy, Thermogravimetry, Differential scanning calorimetry, surface area and Vibrating sample magnetometry.  Nanoparticles obtained  crystallize with a spinel type cubic structure and an average size between 9 and 102 nm and a surface area between 77.6 and 14.9 m2/g. Magnetization measurements versus applied field verified the strong influence of synthesis conditions on the particle size and therefore on the magnetic properties. The maximum field magnetization M(H) shows hysteresis loops that not saturate at the maximum field applied, reaching a maximum magnetization of 44.62 emu/g.

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Author Biographies

Sarah Briceño, Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.

Post-doctorante en el Laboratorio de Fí­sica de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.

Werner Brämer-Escamilla, Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela

Postdoctorante en el Laboratorio de Fí­sica de la Materia Condensada. Instituto Venezolano de Investigaciones Cientí­ficas IVIC. Caracas, Venezuela.

Pedro Silva, Laboratorio de Física de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela

Jefe del Laboratorio de Fí­sica de la Materia Condensada. Instituto Venezolano de Investigaciones Científicas IVIC. Caracas, Venezuela.

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Published

2012-05-23

How to Cite

Briceño, S., Brämer-Escamilla, W., Silva, P., Delgado, G., Díaz, Y., Plaza, E., & Cañizales, E. (2012). SYNTHESIS, CHARACTERIZATION AND MAGNETIC PROPERTIES OF CoFe2O4 NANOPARTICLES USING PEG AS SURFACTANT. LatinAmerican Journal of Metallurgy and Materials, 156–162. Retrieved from https://rlmm.org/index.php/rlmm/article/view/315

Issue

2013, 33(1)

Section

Regular Articles

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