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| 摘要: |
| 分别采用水体系化学共沉淀法和聚乙二醇体系化学共沉淀法制备了超顺磁性的纳米Fe3O4磁性粒子，并比较了它们在物相组成、磁性能以及分散稳定性等方面的差异．结果显示：在2种体系中制备的纳米Fe3O4磁性粒子都呈现出较好的超顺磁性，其中水体系中制备的纳米Fe3O4磁性粒子结晶度较高，聚乙二醇体系中制备的纳米Fe3O4磁性粒子磁化率和分散稳定性较优． |
| 关键词: 纳米Fe3O4 磁性粒子 分散体系 合成过程 化学共沉淀法 分散稳定性 超顺磁性 聚乙二醇 用水体系 物相组成 制备 磁性能 结晶度 磁化率 |
| DOI： |
| 分类号:TB383 TM27 |
| 基金项目:上海市科委纳米专项基金资助项目(0452nm059) |
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| Effect of Dispersion on Preparation of Nano-Fe3O4 Particles |
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LOU Min-yi WANG De-ping HUANG Wen-hai JIA Qiu-ling LIU Bing
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| Abstract: |
| Precipitation in H_2O system and in PEG system was used to prepare the nano-Fe_3O_4 (particles) which exhibit super-paramagnetic behavior. Further more, they were compared with each other in phase, magnetic characteristics and stability. The results show that the nano-Fe_3O_4 particles prepared in two systems exhibit super-paramagnetic behavior. Compared with each other, the particles prepared in H_2O system show better crystallinity, while the particles prepared in PEG system show higher magnetic susceptibility and better stability. |
| Key words: magnetic microspheres(MMS),nano-Fe_3O_4,chemical precipitation method |
