title: Controllable preparation of ternary superparamagnetic nanoparticles dual-doped with Mn and Zn elements.
abstract: Superparamagnetic iron oxide nanoparticles (SPIONs) with high saturation magnetization are successfully synthesized via thermal decomposition method by doping Mn and Zn elements simultaneously. The synthesis procedure was modified according to the thermal stabilities of the precursors, in order to ensure that the stoichiometry of the synthesized samples can be retained exactly from the starting ratios of the Fe/Mn/Zn in the initial precursors. As a result, the saturation magnetization of the dual-doped nanoparticles increased about 23% compared to that without the dopants. The superparamagnetic nanoparticles had narrow size distribution and the average diameter was about 8 nm. XRD and HRTEM analyses also indicated that the materials had a cubic spinel structure.
authors: National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, PR China.
authors: Ke-Xia
authors: KX
authors: Liu
authors: Fang
authors: F
authors: Lan
authors: Wen
authors: W
authors: Jiang
authors: Xiao-Bo
authors: XB
authors: Zeng
authors: Hao
authors: H
authors: Hu
authors: Yao
authors: Y
authors: Wu
authors: Zhong-Wei
authors: ZW
authors: Gu
mesh_terms: D003460:Crystallization / Q000379:methods*; D003911:Dextrans / Q000138:chemical synthesis*; D046911:Macromolecular Substances / Q000737:chemistry; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008345:Manganese / Q000737:chemistry*; D008422:Materials Testing; D008968:Molecular Conformation; D010316:Particle Size; D013499:Surface Properties; D015032:Zinc / Q000737:chemistry*
chemical_list: D003911:Dextrans; D046911:Macromolecular Substances; D058185:Magnetite Nanoparticles; C097921:ferumoxtran-10; D008345:Manganese; D015032:Zinc