Preparation and characterization of hydroxyapatite/γ-Fe₂O₃ hybrid nanostructure

Abstract

The hybrid particles composed of hydroxyapatite (HAp) and ferrite (γ-Fe₂O₃) were synthesized by two-step precipitation method. The effect of reaction temperature on the morphology of the hybrids was also studied. The resultant hybrids were characterized by transmission electron microscopy (TEM) and X-ray diffraction analysis(XRD). It was found that γ-Fe₂O₃ nanoparticles dispersed within the HAp matrix and these hybrids had a feather-like or spherical morphology when synthesized at 90 °C or room temperature, respectively. The magnetic properties of the hybrid showed good superparamagnetic feature, and they could be controlled by the external magnetic field.

Keywords

hydroxyapatite / γ-Fe₂O₃ / hybrid nanostructure / superparamagnetism

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