Co-Pd纳米管阵列的制备及其磁特性  

On Fabrication and Magnitic Properties of Co-Pd Nanotube Arrays

作　　者：刘海瑞[1] 李玉山[2] 路庆凤[1] 

机构地区：[1]河南师范大学物理与信息工程学院,河南新乡453007 [2]菏泽学院物理系,山东菏泽274015

出　　处：《河北师范大学学报（自然科学版）》2009年第3期322-325,共4页Journal of Hebei Normal University：Natural Science

基　　金：河南省教育厅自然科学基金(2007140008);菏泽学院自然科学基金(XY07WL01)

摘　　要：用直流电化学沉积方法,通过改变沉积电压,在多孔阳极氧化铝(AAO)模板中制备了Co-Pd合金纳米管阵列,分别用扫描电镜(SEM)和振动样品磁强计(VSM)对样品的形貌和磁学性质进行了测试.SEM结果显示,纳米管阵列均匀有序;样品磁性测试结果表明,外场垂直于纳米管轴时的剩磁比(Mr/Ms)比外场平行于纳米管时的剩磁比大,且矫顽力(Hc)随着Co含量的增加而增加.在真空500℃退火后,样品矫顽力有明显增大.Co-Pd alloy nanotubes have been grown into self-synthesised anodic alumina oxide （AAO） template by DC-electrodeposition. The morphology and magnetic properties have been measured by scanning electronic microscope （SEM） and vibrating sample magnetometer （VSM）. SEM has shown that the nanotubes are in arrays with uniform diameter. VSM results indicate that the remanence ratio （Mr/Ms） is larger when magnetic field is perpendicular to the axis of the nanotube arrays compared to that when the magnetic field is parallel to the axis of tubes. The coercivity （He） of the nanotube arrays increases with an enhancement of Co content. There is a largely increase in the values of Hc after annealing at 500℃.

关 键 词：Co-Pd合金纳米管阵列 剩磁比 矫顽力 退火 

分 类 号：O469[理学—凝聚态物理]