Synthesis and Magnetic Properties of Nearly Monodisperse CoFe2O4 Nanoparticles Through a Simple Hydrothermal Condition

• DOI: 10.1007/s11671-010-9599-9
• Publication Date: 2010-04-15T06:15:21Z
• Authors: Xing-Hua Li; Cai-Ling Xu; Xiang-Hua Han; Liang Qiao; Tao Wang; Fa-Shen Li
• Keywords: Oleylamine; Superparamagnetism; Dispersity; Nanomaterials; Nanochemistry; Trimesic acid

Nearly monodisperse cobalt ferrite (CoFe2O4) nanoparticles without any size-selection process have been prepared through an alluring method in oleylamine/ethanol/water system. Well-defined nanospheres with average size of 5.5 nm synthesized using metal chloride as the law materials and oleic amine capping agent, a general liquid-solid-solution (LSS) process. Magnetic measurement indicates that particles exhibit very high coercivity at 10 K perform superparamagnetism room temperature which is further illuminated by ZFC/FC curves. These superparamagnetic nanomaterials are considered to potential application fields biomedicine. The synthesis possible be approach for preparation other pure binary ternary compounds.