【作者】 朱浩； 杨绍光； 都有为；

【Author】 Zhu Hao, Yang Shaoguang, Du YouweiNational Laboratory of Solid State MicrostructuresPhysics Department of Nanjing UniversityNanjing, Jiangsu 210093

【机构】 南京大学固体微结构国家重点实验室南京大学物理系；

【摘要】 通过在阳极氧化Al₂O₃模板的纳米孔洞中进行电化学沉积的方法,我们制备了Fe,Co,Ni,Fe₁₄Ni₈₆,Fe₇₀Co₃₀等磁性金属和合金的纳米线有序阵列。纳米线的直径25nm,长度约50μm,相邻纳米线间距60nm。在这些磁性纳米线有序阵列中,我们都观察到了矫顽力的增强,和矫顽力的方向依赖性。在比较和解释矫顽力增强原因的基础上,我们又深入的研究了Fe₁₄Ni₈₆合金纳米线的矫顽力和夹角的关系,用球链模型对其进行模拟,计算结果与实验数据符合的很好。更多还原

【Abstract】 We fabricated iron, cobalt, nickel, iron-nickel and iron cobalt ordered magnetic nanowire arrays, through electrodepositing corresponding materials into the nano-channels of anodic alumite template(AAT). The wires are about 25nm in diameter, 50μm in length, and the center distance of the neighboring wires are about 60nm. Enhanced coercivities and angular dependant coercivities were observed in all the magnetic nanowire arrays. The angular dependant and enhanced coercivities were studied, and could be explained well by the combined chain-of-sphere model of uniform rotation and non-symmetric fanning.更多还原