节点文献

多元醇法制备纳米Fe₃O₄及其静磁性能的研究

Research on preparing Fe₃O₄ nanoparticles by polyol process and magnetic properties

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 LIU Biao~1,GUAN Jian-guo~2,ZHANG Qing-jie~2(1.School of Materials Science and Engineering,Jinan University,Ji’nan 250022,China;2.State Key Lab.of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

【机构】济南大学材料科学与工程学院；武汉理工大学材料复合新技术国家重点实验室；武汉理工大学材料复合新技术国家重点实验室山东济南250022；湖北武汉430070；

【摘要】以氯化亚铁为前驱物,1,2-丙二醇为还原剂,采用多元醇法意外获得Fe3O4纳米粒子。通过X射线衍射分析标定了获得样品的物相为面心立方结构的Fe3O4,用透射电镜观察了样品的形貌,颗粒形貌为球形,大小为50~70nm,反应机理的研究表明,Fe2+发生了歧化反应,反应主要向氧化的方向进行。用振动样品磁强计表征了样品的静磁性能,测得的饱和磁化强度为74.30A.m2/kg,矫顽力仅为102.68A/m,粒子具有超顺磁性。更多还原

【Abstract】 Fe₃O₄ nanoparticles were prepared unexpectedly by polyol process using FeCl₂·4H₂O as precursor,1,2-propylene glycol as reducer.The as-prepared sample was characterized by XRD analysis.The morphology observed by TEM showed that the shape of Fe₃O₄ nanoparticles was,the size of them was 50～70nm.The reaction mechanism research showed that the disproportionation of Fe²⁺ ions had occurred and the Fe²⁺ ions had been oxidized to produce Fe₃O₄ nanoparticles.The hysteresis loop measured by VSM showed that the saturation magnetization was 74.30A·m²/kg,the coercivity was 102.68A/m which was shown that the Fe₃O₄ nanoparticles were superparamagnetic.更多还原