Synthesis and Characterization of Superparamagnetic Zinc Ferrite–Chitosan Composite Nanoparticles
Single-phase ZnFe2O4 nanoparticles have been prepared by coprecipitation method without any subsequent calcination. The ZnFe2O4–chitosan magnetic composite nanoparticles were also synthesized by two steps via a suspension cross-linking method. The crystallite size, microstructure and magnetic properties were studied using X-ray diffraction (XRD), Fourier transmission infrared (FTIR) spectroscopy, transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The TEM and XRD results showed that the composite magnetic nanoparticles contained single-phase zinc ferrite with a diameter of 20–30 nm. The magnetic measurements also exhibited that the zinc ferrite–chitosan nanoparticles were superparamagnetic with the magnetization of 4.2 emu/g at 10 kOe.
KeywordsZinc ferrite Chitosan Superparamagnetic Magnetic properties
Authors would like to acknowledge the financial support of University of Tehran for this research under grant number 05/1/8107014.
- 1.Tartaj, P., Morales, M.P., et al.: J. Magn. Magn. Mater. 28, 290–291 (2005)Google Scholar
- 7.Buschow, K.H.J.: Concise encyclopedia of magnetic and superconducting materials. Elsevier Science (2005)Google Scholar
- 32.Socrates, G.: Infrared and Raman characteristic group frequencies. Wiley, New York (2001)Google Scholar
- 34.Bean, J.D.L. C.P.: J. Appl. Phys. 30, 120S (1959)Google Scholar