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Ferromagnetic resonance study of Ni nanowire arrays

Zhou Shi-Ming Lu Mu Yuan Shu-Juan

Ferromagnetic resonance study of Ni nanowire arrays

Zhou Shi-Ming, Lu Mu, Yuan Shu-Juan
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  • Abstract views:  4507
  • PDF Downloads:  1251
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Publishing process
  • Received Date:  17 May 2005
  • Accepted Date:  08 June 2005
  • Published Online:  05 January 2006

Ferromagnetic resonance study of Ni nanowire arrays

  • 1. (1)复旦大学应用表面国家重点实验室,复旦大学物理系,上海 200433; (2)南京大学物理系,固体微结构物理国家重点实验室,南京 210093; (3)上海大学物理系,上海 200444

Abstract: Arrays of Ni nanowires were electrodeposited into anodic alumina oxide templates with various pore diameters and porosity. The magnetization behavior of the Ni nanowire arrays was investigated with ferromagnetic resonance techniques and the vibrating sample magnetometer. Both ferromagnetic resonance spectra and hysteresis loops show that there is a strong dipolar interaction between the nanowires. The easy axis of magnetization is mainly a result of a competition of shape anisotropy and dipolar interaction. With increasing array density, the dipolar interactions increase and the easy axis is tuned from parallel to perpendicular to the wire axis.

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