Synthesis of cobalt ferrite nanoparticles using a combination of the co-precipitation and hydrothermal methods
نویسندگان
چکیده
In this work we have examined the influence of the pH on the structural and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles obtained by a combination of the co-precipitation and hydrothermal methods. The crystal structures and the particle sizes of the prepared powders were analyzed by the X-ray diffraction and transmission electron microscopy, while the magnetic properties of the cobalt ferrite nanoparticles were measured at room temperature using a vibrating-sample magnetometer. The results showed that an increase of the pH improves both the crystallinity of the CoFe2O4 nanoparticles and their average size. At the same time the pH affects the magnetic properties of the nanoparticles, since the saturation magnetization (MS), remanent magnetization (Mr) and coercivity (HC) increase with the increase of the pH.
منابع مشابه
Magnetic Properties of Cobalt Ferrite synthesized by Hydrothermal and Co-precipitation Methods: A Comparative Study
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