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Chin. Phys. B, 2009, Vol. 18(8): 3573-3576    DOI: 10.1088/1674-1056/18/8/073
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The effect of substrate on magnetic properties of Co/Cu multilayer nanowire arrays

Ren Yong(任勇), Wang Jian-Bo(王建波), Liu Qing-Fang(刘青芳), Han Xiang-Hua(韩相华), and Xue De-Sheng(薛德胜)
Institute of Applied Magnetics, Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, China
Abstract  Ordered Co/Cu multilayer nanowire arrays have been fabricated into anodic aluminium oxide templates with Ag and Cu substrate by direct current electrodeposition. This paper studies the morphology, structure and magnetic properties by transmission electron microscopy, selective area electron diffraction, x-ray diffraction, and vibrating sample magnetometer. X-ray diffraction patterns reveal that both as-deposited nanowire arrays films exhibit face-centred cubic structure. Magnetic measurements indicate that the easy magnetization direction of Co/Cu multilayer nanowire arrays films on Ag substrate is perpendicular to the long axis of nanowire, whereas the easy magnetization direction of the sample with Cu substrate is parallel to the long axis of nanowire. The change of easy magnetization direction attributed to different substrates, and the magnetic properties of the nanowire arrays are discussed.
Keywords:  multilayer nanowire      Co/Cu      anisotropy  
Received:  24 November 2008      Revised:  18 December 2008      Accepted manuscript online: 
PACS:  75.75.+a  
  61.46.-w (Structure of nanoscale materials)  
  68.65.Ac (Multilayers)  
  75.50.Tt (Fine-particle systems; nanocrystalline materials)  
  75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)  
  75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10404011 and 50401018) and the Program for New Century Excellent Talents (NCET) in University.

Cite this article: 

Ren Yong(任勇), Wang Jian-Bo(王建波), Liu Qing-Fang(刘青芳), Han Xiang-Hua(韩相华), and Xue De-Sheng(薛德胜) The effect of substrate on magnetic properties of Co/Cu multilayer nanowire arrays 2009 Chin. Phys. B 18 3573

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