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通过改变氧化电压和酸性溶液制备了孔径、孔隙率不同的阳极氧化铝模板,用电沉积方法在模板中制备了Ni有序纳米线阵列,并用铁磁共振技术和振动样品磁强计对其进行了研究.研究表明Ni纳米线阵列存在着较强的偶极相互作用,偶极相互作用与纳米线的形状各向异性之间的竞争决定了纳米线的易磁化方向.随着纳米线阵列密度的增加,线间的偶极相互作用增加,使得纳米线易磁化方向从平行于纳米线方向渐趋向于垂直于纳米线的平面内.
Anodized alumina templates with different pore sizes and porosity were prepared by changing the oxidation voltage and acidic solution. Ni-ordered nanowire arrays were prepared by electro-deposition in a template and subjected to ferromagnetic resonance and vibrating sample magnetometers The research shows that Ni nanowire array has strong dipole interaction and the competition between dipole interaction and shape anisotropy of nanowires determines the direction of easy magnetization.As the nanowire array density Increase the dipole interaction between lines increased, making the direction of easy magnetization of nanowires from the direction parallel to the nanowire tends to be perpendicular to the nanowire plane.