tailieunhanh - Fabrication and characterization of single segment CoNiP and multisegment CoNiP/Au nanowires

This paper presents the fabrication of CoNiP single segment and CoNiP/Au multisegment nanowires. We have fabricated these nanowires by electrodeposition method into polycarbonate templates with a nominal pore diameter about 100 nm. The hystersis loops were measured with the applied magnetic field parallel and perpendicular to the wire axis using a vibrating sample magnetometer (VSM). | Communications in Physics, Vol. 24, No. 3 (2014), pp. 283-288 DOI: FABRICATION AND CHARACTERIZATION OF SINGLE SEGMENT CoNiP AND MULTISEGMENT CoNiP/Au NANOWIRES LUU VAN THIEM Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering Technology, Vietnam National University, Hanoi and Faculty of Basic Science, Hanoi Industrial College for Textile, Garment and Fashion LE TUAN TU Faculty of Physics, VNU University of Science, Vietnam National University, Hanoi E-mail: letuantu@ Received 31 July 2014 Accepted for publication 15 September 2014 Abstract. This paper presents the fabrication of CoNiP single segment and CoNiP/Au multisegment nanowires. We have fabricated these nanowires by electrodeposition method into polycarbonate templates with a nominal pore diameter about 100 nm. The hystersis loops were measured with the applied magnetic field parallel and perpendicular to the wire axis using a vibrating sample magnetometer (VSM). The structure morphology was observed by Scanning Electron Miroscopy (SEM) and the element composition of CoNiP/Au multisegment nanowires were analyzed by EDS. The results show that these nanowires are very uniform with the diameter of 100 nm. The observed coercivity (HC ) and squareness (Mr/Ms) of CoNiP single segment nanowires are larger than the CoNiP/Au multisegment nanowires. Keywords: nanowires, single segment, multisegment, electrodeposition, magnetic properties. I. INTRODUCTION In recent years, nanoscale materials have attracted a large number of the worldwide scientists. As an inevitable part of these materials, nanowires possess unique electrical, electronic, thermoelectrical, optical, magnetic and chemical properties [1]. Nanowires therefore hold lot of promises for various applications. Up to now, nanowires including metallic nanowires, semiconductor nanowires, oxide nanowires, multisegment nanowires and semiconductor quantum nanowires have been fabricated and applied.

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