Magnetic field alignment of template released ferromagnetic nanowires.

A detailed investigation of magnetic field alignment of template released ferromagnetic nanowires has been undertaken. The distributions of magnetic field induced angular alignments of Ni 0.8Fe0.2, Co, and Ni nanowires grown by electro-deposition and deposited onto substrates from a dilute suspension have been investigated as a function of magnetic field strengths up to ∼1 kOe. The nominal diameter of the nanowires investigated is either ∼200 nm (Ni 0.8Fe0.2) or ∼300 nm (Co and Ni). The percentage of nanowires aligned within 0°–10° and 0°–20° of the applied field axis is observed to increase rapidly with increasing field strength up to ∼200 Oe, followed by a slower increase in alignment for the Ni 0.8Fe0.2 and Ni wires and little improvement in alignment for the Co wires at higher fields. The proportion of aligned wires within 0°–20° is found to reach ∼82% for Ni 0.8Fe0.2, ∼71% for Ni and only 53% for the Co nanowires using a magnetic field of 1 kOe. The influence of wire length upon the efficacy of magnetic alignment is investigated using Ni 0.8Fe0.2 and Ni nanowires; this showed that the fractional alignment improved for longer nanowires.

[1]  N. Myung,et al.  Synthesis and magnetotransport studies of single nickel-rich NiFe nanowire , 2007 .

[2]  E. Palleau,et al.  How to Control AFM Nanoxerography for the Templated Monolayered Assembly of 2 nm Colloidal Gold Nanoparticles , 2009, IEEE Transactions on Nanotechnology.

[3]  Peter C. Searson,et al.  Electrodeposited magnetic nanowires: arrays, field-induced assembly, and surface functionalization , 2002 .

[4]  C. Chung,et al.  Electroplating of metal nanotubes and nanowires in a high aspect-ratio nanotemplate , 2008 .

[5]  Bongyoung Yoo,et al.  Magnetically Assembled Multisegmented Nanowires and Their Applications , 2009 .

[6]  Dominique Mailly,et al.  Experimental evidence of the Neel-Brown model of magnetization reversal , 1997 .

[7]  Wendy C. Crone,et al.  Magnetic Manipulation of Copper−Tin Nanowires Capped with Nickel Ends , 2004 .

[8]  Ashok Mulchandani,et al.  Nanowire‐Based Electrochemical Biosensors , 2006 .

[9]  Peter C. Searson,et al.  Magnetic trapping and self-assembly of multicomponent nanowires , 2002 .

[10]  Eyal Zussman,et al.  Investigation of fluidic assembly of nanowires using a droplet inside microchannels , 2005 .

[11]  Ru‐Shi Liu,et al.  Synthesis and magnetic properties of multilayer Ni/Cu and NiFe/Cu nanowires , 2006 .

[12]  P. A. Smith,et al.  Electric-field assisted assembly and alignment of metallic nanowires , 2000 .

[13]  S. K. Bandopadhyay,et al.  Effect of aspect ratio on the magnetic properties of nickel nanowires , 2008 .

[14]  Magnetically assembled 30 nm diameter nickel nanowire with ferromagnetic electrodes. , 2006, Nanotechnology.

[15]  Selective alignment of a ZnO nanowire in a magnetic field for the fabrication of an air-gap field-effect transistor , 2010 .

[16]  Sang-Mo Koo,et al.  Precise Alignment of Single Nanowires and Fabrication of Nanoelectromechanical Switch and Other Test Structures , 2007, IEEE Transactions on Nanotechnology.

[17]  A. W. Maijenburg,et al.  Dielectrophoretic alignment of metal and metal oxide nanowires and nanotubes: a universal set of parameters for bridging prepatterned microelectrodes. , 2011, Journal of colloid and interface science.

[18]  E. Calvo,et al.  Nanowire manipulation on surfaces through electrostatic self‐assembly and magnetic interactions , 2009 .

[19]  Charles M. Lieber,et al.  Logic Gates and Computation from Assembled Nanowire Building Blocks , 2001, Science.

[20]  C. Dekker,et al.  Logic Circuits with Carbon Nanotube Transistors , 2001, Science.

[21]  Jimmy Xu,et al.  Fabrication of highly ordered metallic nanowire arrays by electrodeposition , 2001 .

[22]  Gerald J. Meyer,et al.  Magnetic Alignment of Fluorescent Nanowires , 2001 .

[23]  Byron D. Gates,et al.  Directed assembly of nanowires , 2009 .

[24]  H. R. Khan,et al.  Magnetic and structural properties of the electrochemically deposited arrays of Co and CoFe nanowires , 2002 .

[25]  Nosang V. Myung,et al.  Magnetic Alignment of Nanowires , 2005 .

[26]  N. Myung,et al.  Electro- and magneto-transport properties of a single CoNi nanowire , 2007 .

[27]  Wendy C. Crone,et al.  Template Synthesis and Magnetic Manipulation of Nickel Nanowires , 2005 .

[28]  H. Xing,et al.  Magnetic field mediated nanowire alignment in liquids for nanocomposite synthesis , 2008, Nanotechnology.

[29]  Eyal Zussman,et al.  Electrostatic field-assisted alignment of electrospun nanofibres , 2001 .

[30]  Sang Won Lee,et al.  Magnetic alignment of ZnO nanowires for optoelectronic device applications , 2007 .

[31]  Magnetic properties of large aspect ratio Co dots electrodeposited on prestructured silicon substrates , 2005 .

[32]  Luc Piraux,et al.  Study of the magnetization reversal in individual nickel nanowires , 2000 .

[33]  N. Myung,et al.  Site-Specific Magnetic Assembly of Nanowires for Sensor Arrays Fabrication , 2006, IEEE Transactions on Nanotechnology.

[34]  Meier,et al.  Nucleation of Magnetization Reversal in Individual Nanosized Nickel Wires. , 1996, Physical review letters.

[35]  David J. Sellmyer,et al.  TOPICAL REVIEW: Magnetism of Fe, Co and Ni nanowires in self-assembled arrays , 2001 .

[36]  S. Tewari,et al.  Electrodeposition of nickel nanowires and nanotubes using various templates , 2008 .

[37]  Zhiping Luo,et al.  Changes in the crystalline structure of electroplated Co nanowires induced by small template pore size , 2009 .

[38]  Eui-Hyeok Yang,et al.  Hierarchical magnetic assembly of nanowires , 2007 .

[39]  H. Hong,et al.  Magnetic alignment of Ni-coated single wall carbon nanotubes in heat transfer nanofluids , 2010 .

[40]  P. Ajayan,et al.  On the growth mechanism of nickel and cobalt nanowires and comparison of their magnetic properties , 2008 .

[41]  J. George,et al.  Multiprobe magnetoresistance measurements on isolated magnetic nanowires , 2002 .

[42]  D. Navas,et al.  Novel magnetic materials prepared by electrodeposition techniques: arrays of nanowires and multi-layered microwires , 2004 .

[43]  Chi-Chang Hu,et al.  Cyclic voltammetric deposition of nanostructured iron-group alloys in high-aspect ratios without using templates , 2003 .

[44]  J. Rivas,et al.  Preparation and magnetic behavior of arrays of electrodeposited Co nanowires , 2002 .

[45]  Christopher S. Chen,et al.  Assembly of multicellular constructs and microarrays of cells using magnetic nanowires. , 2005, Lab on a chip.

[46]  Chi-Chang Hu,et al.  Iron–cobalt and iron–cobalt–nickel nanowires deposited by means of cyclic voltammetry and pulse-reverse electroplating , 2003 .