采用基于氧化铝模板的电化学共沉积方法合成了Ni/Cu纳米电缆有序阵列,通过电化学选择刻蚀纳米电缆的铜核,制备了多晶Ni纳米管有序阵列.Ni纳米管有序阵列表现出明显的单轴磁各向异性,易磁化轴沿着纳米管方向.这种具有磁各向异性的有序阵列在高密度垂直磁记录材料中具有潜在的应用前景.
Ordered Ni/Cu nanocable arrays with Cu core and Ni shell were fabricated by electrochemical template synthesis based on anodic alumina membranes and Ni nanotube arrays were then obtained by selective etching the Cu cores from Ni/Cu nanocable arrays.Magnetic hysteresis loops show that Ni nanotube arrays possess uniaxial anisotropy with the easy axis along Ni nanotubes,indicating their potential applications in the high density perpendicular magnetic recording.
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