摘要
采用自制的装置,通过阳极弧光放电法制备了内包覆Fe/Co磁性纳米粒子的碳纳米管(CNTs).利用透射电子显微镜(TEM)、拉曼散射光谱和X射线衍射(XRD)对其进行表征,用振动样品磁强计(VSM)检测得到其磁学性能参数.TEM测试表明,CNTs杂质少,管径均匀一致,CNTs内包覆的物质均匀、连续,且为Fe/Co粒子.磁学性质的测量表明,CNTs的磁学性能较包覆前有了很大的改善,其比饱和磁化强度σs为17.30A.m2.kg-1,比剩余磁化强度σr为3.96A.m2.kg-1,矫顽力Hc为31521.60A.m-1.
ABSTRACT Fe/Co particles encapsulated in carbon nanotubes （CNTs） were prepared by anodic arc discharging plasma. Transmis- sion election microscopy （TEM）, Raman spectroscopy, X-ray diffraction （XRD）, and vibrating sample magnetometer （VSM） were used to character the structure and magnetic properties of the products. TEM results show that CNTs have little impurity and uniform size, and the particles encapsulated in carbon nanotubes are Fe/Co particles with good continuity. The magnetic properties of CNTs encapsulated with Fe/Co particles are greatly improved, and the saturated magnetization ~s, remanence ~r, and coercivity Hc of the sample are 17.30A·m^2·kg^-1, 3.96A·m^2·kg^-1, and 31521.60A·m^-1, respectively.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第8期908-911,共4页
Journal of University of Science and Technology Beijing
基金
甘肃省自然科学基金资助项目(NoZS-011-A25-007)
关键词
碳纳米管
内包覆
磁学性能
阳极弧
carbon nanotubes （CNTs）
encapsulated particles
magnetic property
anodic arc
