title: Synthesis and Magnetic Properties of Nearly Monodisperse CoFe2O4Nanoparticles Through a Simple Hydrothermal Condition.
abstract: Nearly monodisperse cobalt ferrite (CoFe2O4) nanoparticles without any size-selection process have been prepared through an alluring method in an oleylamine/ethanol/water system. Well-defined nanospheres with an average size of 5.5 nm have been synthesized using metal chloride as the law materials and oleic amine as the capping agent, through a general liquid-solid-solution (LSS) process. Magnetic measurement indicates that the particles exhibit a very high coercivity at 10 K and perform superparamagnetism at room temperature which is further illuminated by ZFC/FC curves. These superparamagnetic cobalt ferrite nanomaterials are considered to have potential application in the fields of biomedicine. The synthesis method is possible to be a general approach for the preparation of other pure binary and ternary compounds.
authors.affiliation: Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, 730000, Lanzhou, People's Republic of China. wtao@lzu.edu.cn.
authors.forename: Xing-Hua
authors.initials: XH
authors.lastname: Li
authors.forename: Cai-Ling
authors.initials: CL
authors.lastname: Xu
authors.forename: Xiang-Hua
authors.initials: XH
authors.lastname: Han
authors.forename: Liang
authors.initials: L
authors.lastname: Qiao
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Fa-Shen
authors.initials: FS
authors.lastname: Li