Cobalt ferrite powders are synthesized by the co-precipitation technology, combined with the hydrothermal synthesis method and crystallite size, specific surface area (SSA), magnetic properties of synthesized products are obtained. All the synthesized ferrites are nanocrystalline single phase materials with crystallite size of 10-16 nm the SSA of 60±5 m~2/g and the calculated particle size of 20±2 nm. Synthesized Co ferrites are characterized by the saturation magnetization Ms of 59-60 emu/g, remanent magnetization M_r of 23 emu/g and coercivity Hc of 570-650 Oe.
展开▼
