Arrays of Co nanowires of diameter ~ 200 nm have been prepared by electrodeposition into nanopores of anodic aluminum oxide templates. X-ray diffraction confirms that these nanowires consist of mostly hexagonal close-packed (hcp) or face-centered cubic (fcc) grains or a mixture of both. Scanning electron microscope confirms that these nanowires are continuous and parallel to each other. The effect of boric acid and pH on the structural and magnetic properties of electrodeposited cobalt nanowires has been studied. When boric acid is not introduced into the electrolyte, high concentration of hydrogen is liberated, which results into the formation of disordered fcc Co at low pH. The high value of coercivity for the nanowires deposited at low pH is attributed to the formation of higher fraction of disordered fcc Co nanowires. The induced anisotropy is weak at high pH compared to low pH. This is attributed to the competition between shape and magnetocrystalline anisotropy of hcp phase.

通过电沉积到阳极氧化铝模板的纳米孔中，制备了直径约为200 nm的Co纳米线阵列。X射线衍射证实这些纳米线主要由六方密堆积（hcp）或面心立方（fcc）晶粒或两者的混合物组成。扫描电子显微镜证实这些纳米线是连续的并且彼此平行。研究了硼酸和pH值对电沉积钴纳米线结构和磁性的影响。当没有将硼酸引入电解液时，会释放出高浓度的氢，这导致在低pH值下形成无序的fccCo。在低pH值下沉积的纳米线的矫顽力值很高，这归因于形成了更高比例的无序fcc Co纳米线。与低pH值相比，高pH值引起的各向异性很弱。这归因于hcp相的形状和磁晶各向异性之间的竞争。