Preparation and magnetic properties of highly ordered Co/Ag alloy nanowire arrays

Yingjuan Mi; Jianling Zhao; Xiaoxu Liu; Jinliang Tao; Chenguang Sun; Rongqing Xu; Yangxian Li

doi:10.1117/12.780311

13 November 2007 Preparation and magnetic properties of highly ordered Co/Ag alloy nanowire arrays

Yingjuan Mi, Jianling Zhao, Xiaoxu Liu, Jinliang Tao, Chenguang Sun, Rongqing Xu, Yangxian Li

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64234R (2007) https://doi.org/10.1117/12.780311
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Highly ordered Co/Ag nanowire arrays have been successfully prepared by electrochemical deposition method using anodic alumina membranes (AAMS) as template. Electrolytes used in our study were the mixed solution of cobalt sulphate and silver nitrate. Experimental parameters including concentrations of different electrolytes, deposition potential, reaction time, temperature and frequency were investigated in detail. The microstructures and chemical composition of Co/Ag nanowires were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). XRD patterns of Co/Ag nanowires clearly showed that they presented a cubic crystalline structure. Magnetic properties of Co/Ag nanowires were determined by vibrating sample magnetometer (VSM). The hysteresis loops show that all of the nanowires exhibited magnetic anisotropy with the easy axis along the nanowires. In this orientation, the nanowire arrays have large coercive field and high squareness. The hard axis direction is perpendicular to the nanowires. In this orientation, the nanowire arrays have small coercive field and low squareness.

Citation Download Citation

Yingjuan Mi, Jianling Zhao, Xiaoxu Liu, Jinliang Tao, Chenguang Sun, Rongqing Xu, and Yangxian Li "Preparation and magnetic properties of highly ordered Co/Ag alloy nanowire arrays", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64234R (13 November 2007); https://doi.org/10.1117/12.780311

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KEYWORDS

Nanowires

Magnetism

Annealing

Scanning electron microscopy

Crystals

Anisotropy

Metals

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