| Preparation and Characterization of Fe3O4 Magnetic Nano-particles by 60Co γ-ray Irradiation |
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| 作者姓名： | Mingcheng YANG Hongyan SONG Chengshen ZHU Suqin HE Ya GAO |
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| 作者单位： | [1]School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450052, China [2]Isotope Institute of Henan, Academy of Sciences, Zhengzhou 450015, China |
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| 基金项目： | This work was supported by the Natural Science Foundation of Henan Province under grant No. 0611023900. |
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| 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.
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| 关 键 词： | 四氧化三铁 磁性纳米颗粒 制备 特性 钴60γ-射线辐射法 |
| 收稿时间： | 2006-05-22 |
| 修稿时间： | 2006-08-17 |
Preparation and Characterization of Fe3O4 Magnetic Nano-particles by 60Co γ-ray Irradiation |
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| Mingcheng YANG Hongyan SONG Chengshen ZHU Suqin HE Ya GAO.Preparation and Characterization of Fe3O4 Magnetic Nano-particles by 60Co γ-ray Irradiation[J].Journal of Materials Science & Technology,2007,23(2):182-184. |
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| Authors: | Mingcheng YANG Hongyan SONG Chengshen ZHU Suqin HE Ya GAO |
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| Affiliation: | School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450052, China... |
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| Abstract: | 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 nano-particles 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 Fe3O4 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. |
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| Keywords: | 60Co γ-ray Irradiation Fe3O4 nano-particles Super-paramagnetism |
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