Preparation and Characterization of Fe3O4 Magnetic Nano-particles by ^（60）Co γ-ray Irradiation  

Preparation and Characterization of Fe_3O_4 Magnetic Nano-particles by ^(60)Co Υ-ray Irradiation

作　　者：Mingcheng YANG Hongyan SONG Chengshen ZHU Suqin HE Ya GAO 

机构地区：[1]School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450052, China [2]Isotope Institute of Henan, Academy of Sciences, Zhengzhou 450015, China

出　　处：《Journal of Materials Science & Technology》2007年第2期182-184,共3页材料科学技术（英文版）

基　　金：This work was supported by the Natural Science Foundation of Henan Province under grant No. 0611023900.

摘　　要：By using a new method, ^60Co γ-ray irradiation, Fe3O4 magnetic nano-particles were successfully synthesized at room temperature under ambient pressure. The structure, morphology and magnetic properties of these nanoparticles were characterized by X-ray diffraction （XRD）, transmission electron microscope （TEM） and vibrating sample magnetometer （VSM）, respectively. The radiation formation mechanism was also discussed. The results show that the absorbed dose can greatly influence the structure, morphology and magnetic properties of the products. XRD and TEM studies show that the product prepared by γ-ray irradiation （10 kGy） is pure FesO4 phase and the mean diameter of these nano-particles is about 21 nm. The Fe3O4 nano-particles synthesized by γ-ray irradiation （10 kGy） are mainly in small cubic shape and the size uniformity of these particles is good.By using a new method, ^60Co γ-ray irradiation, Fe3O4 magnetic nano-particles were successfully synthesized at room temperature under ambient pressure. The structure, morphology and magnetic properties of these nanoparticles were characterized by X-ray diffraction （XRD）, transmission electron microscope （TEM） and vibrating sample magnetometer （VSM）, respectively. The radiation formation mechanism was also discussed. The results show that the absorbed dose can greatly influence the structure, morphology and magnetic properties of the products. XRD and TEM studies show that the product prepared by γ-ray irradiation （10 kGy） is pure FesO4 phase and the mean diameter of these nano-particles is about 21 nm. The Fe3O4 nano-particles synthesized by γ-ray irradiation （10 kGy） are mainly in small cubic shape and the size uniformity of these particles is good.

关 键 词：^60Co γ-ray IRRADIATION Fe304 nano-particles Super-paramagnetism 

分 类 号：TB383[一般工业技术—材料科学与工程] TM271.4[电气工程—电工理论与新技术]