| 弱外磁场辅助氧化共沉淀法合成正八面体Fe_3O_4纳米颗粒 |
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| 引用本文： | 林建,胡大为,胡小芳. 弱外磁场辅助氧化共沉淀法合成正八面体Fe_3O_4纳米颗粒[J]. 人工晶体学报, 2010, 39(1): 174-179 |
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| 作者姓名： | 林建 胡大为 胡小芳 |
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| 作者单位： | 华南理工大学机械与汽车工程学院,广州,510640;华南理工大学材料科学与工程学院,广州,510640 |
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| 基金项目： | 广东省工业攻关项目基金资助项目(2005B10301051) |
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| 摘 要： | 本文在弱外磁场辅助条件下,采用氧化共沉淀方法调控合成了正八面体Fe_3O_4纳米颗粒.采用XRD、SEM、振动磁强计(VSM)来表征产物的晶型、形貌和磁性能.XRD结果表明,产物具有尖晶石结构,且结晶良好、纯度高;SEM观察结果表明Fe_3O_4纳米颗粒均为二次粒子,由更小的粒子成长而来;VSM测定结果说明各种形貌的Fe_3O_4纳米粒子具备良好的磁性能.同时,分析了粒子不同形貌的成核机理.结果表明采用弱外磁场辅助的办法可以获得具有良好晶型、正八面体形貌形貌和良好磁性能的Fe_3O_4纳米颗粒.
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| 关 键 词： | 弱磁场 氧化共沉淀 Fe_3O_4纳米颗粒, |
Preparation of Octahedron Nano-Fe_3O_4 Particles via Weakly Magnetic Field Assited Oxidation Coprecipitation |
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| LIN Jian,HU Da-wei,HU Xiao-fang. Preparation of Octahedron Nano-Fe_3O_4 Particles via Weakly Magnetic Field Assited Oxidation Coprecipitation[J]. Journal of Synthetic Crystals, 2010, 39(1): 174-179 |
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| Authors: | LIN Jian HU Da-wei HU Xiao-fang |
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| Affiliation: | 1.College of Machine and Automotive Engineering;South China University of Technology;Guangzhou 510640;China;2.College of Materials Science and Engineering;China |
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| Abstract: | Octahedron nano-Fe3O4 particles were prepared via a weakly magnetic field assisted oxidative-coprecipitation.The crytal type,morphology and magnetic properties were characterized by XRD,SEM and VSM.The XRD results show that the as-synthesised products have spinel structure,high purity and good crystallization.The SEM images indicate that the Fe3O4 nano-particles are secondary particles formated by smaller particles.VSM results indicate that various Fe3O4 nano-particles have good magnetic performance.The for... |
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| Keywords: | weakly magnetic field oxidative coprecipitation Fe3O4 nanoparticle |
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