Synthesis and Characterization of SiO_2 Coated γ-Fe_2O_3 Nanocomposite Powder for Hyperthermic Application  

作　　者：Ji-Hun Yu Jai-Sung Lee Yong-Ho Choa Heinrich Hofmann 

机构地区：[1]Korea Institute of Materials Science, Changwon, 641-831, Korea [2]Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea [3]Swiss Federal Institute of Technology at Lausanne, Lausanne, CH-1015, Switzerland

出　　处：《Journal of Materials Science & Technology》2010年第4期333-336,共4页材料科学技术（英文版）

基　　金：supported by a grant-in-aid for the National Core Research Center Program from the Ministry of Science & Technology and the Korea Science & Engineering Foundation (R15-2006-022-03001-0)

摘　　要：SiO2 coated γ-Fe2O3 nanocomposite powder has been successfully synthesized by chemical vapor condensation process and its feasibility on hyperthermic application was investigated in this study. The power loss of SiO2 coated γ-Fe2O3 nanocomposite powder which means the magnetic heating effect under alternative magnetic field was much higher than the single phase γ-Fe2O3 nano powder due to the very fine size under 20 nm and well dispersion in biologically compatible SiO2 matrix. The superparamagnetism and hyperthermic property of SiO2 coated γ-Fe2O3 nanocomposite powder were discussed in terms of microstructural development in this study.

关 键 词：HYPERTHERMIA Nano-Bio Chemical vapor condensation Silica coated iron oxide nanoparticle SUPERPARAMAGNETISM 

分 类 号：TB383[一般工业技术—材料科学与工程] TG174.4[金属学及工艺—金属表面处理]