Manifestations in the magnetization of the hcp-Co nanowires due to interdependence of aspect ratio and c-axis orientation

作者：Kaur Daljit; Chaudhary Sujeet; Pandya D K^*

来源：Journal of Applied Physics, 2013, 114(4): 043909.

DOI：10.1063/1.4816558

Effect of interdependence of aspect ratio (AR) and c-axis orientation of the hcp-cobalt nanowires (NWs) on their magnetization behavior is reported in 40 and 100 nm diameter NWs. Experimental evidence of periodically modulated magnetic state viz. large transverse-susceptibility arising due to orientation of c-axis normal to NW-axis in 40 nm NWs and magnetic domain imaging is demonstrated, which disappears at low AR owing to randomly oriented c-axes. The 100 nm NWs exhibit a crossover in the easy-axis direction from longitudinal at high AR to transverse at low AR and are explained on the basis of competition between different anisotropic contributions.

• 出版日期2013-7-28