摘要
采用二次阳极氧化法制备高度有序的多孔氧化铝模板,以高度有序的阳极氧化铝为模板,用交流电沉积的方法以较低的电压在孔洞中组装了铁纳米线有序阵列.采用场发射扫描电镜(FES-EM)对模板和纳米线的形貌和结构进行了表征,采用物理特性测量系统(PMMA)测量了铁纳米线的磁滞回线,结果表明纳米线是均匀连续的,直径为50nm左右,纳米线在平行于纳米线轴的方向的矫顽力为2259Oe,矩形比为0.92,铁纳米线阵列有高的磁各向异性,适用于垂直磁记录介质.
Fe nanowires arrays were fabricated at lower voltage by alternating current （AC） electrodepositing ions into nano-holes of the highly ordered porous aluminum anodic oxide template obtained by two-step anodization . The structure and morphology of the template and nano-wire arrays were characterized by Field Emission Scanning Electron Microscope （FESEM）. Hysteresis loops of Fe nanowires were measured by PMMA. The results indicate that the pore diameters are about 50nm, the coercivity parallel to the nanowire axis direction is about 2259Oe, and the regutengular ratio is about 0.92. The highly magnetic anisotropy of Fe nanowire arrays indicates that Fe nanowire is a promising perpendicular memorial material.
出处
《浙江工业大学学报》
CAS
2005年第4期365-367,394,共4页
Journal of Zhejiang University of Technology
基金
浙江省自然科学基金资助项目(501071)
关键词
多孔氧化铝模板
电沉积
纳米线
磁性
template of porous alumina
electrodeposition
nano-wire
magnetism
