Magnetic and magnetization properties of electrodeposited fcc CoPt nanowire arrays

Ferromagnetic Nanowires and Nanotubes

“…The formed aluminum oxide layer was then removed by immersing anodized Al into a mixed solution of 0.4 M chromic acid and 0.6 M phosphoric acid solution at 60 o C. Subsequently, the samples were reanodized for different periods of time under the same anodization conditions as in the first step. These self assembled anodic aluminium oxide (AAO) templates were used to fabricate different types of nanowires and nanotubes by electrochemical deposition method Shamaila et al, 2008b;Shamaila et al, 2009b;Sharif et al 2007). …”

“…Electrodeposition was performed in a three-electrode cell under constant voltage at room temperature, where the sputtered conducting layer served as the working electrode, saturated calomel electrode (SCE) reference and a graphite pole was used as counter electrode. The electrolytes for electrodeposition consisted of their respective salts in deionized water as mentioned in the references Shamaila et al, 2008b;Shamaila et al, 2009a;Shamaila et al, 2009b;Sharif et al 2006;Sharif et al 2007;Sharif et al 2008;Sharif et al 2008). The different lengths of nanowires and nanotubes were obtained by adjusting the time of electrodeposition.…”

“…These self-assembled AAO templates can be used to fabricate Co, Ni, CoPt, CoFe, CoFeB etc. nanowire arrays by electrochemical deposition method Shamaila et al, 2008b;Shamaila et al, 2009b;Sharif et al 2007). where t w =0 gives nanowire and t w > 0 gives nanotube geometry.…”

Influence of an Au capping layer on the magnetic properties of CoPt nanowires

“…Yuan et al 14 achieved a coercive field of 1.20 T in CoPt/Au thin films. Min et al 15 showed an enhancement in coercivity and improved squareness in the hysteresis curves of Au doped CoPt nanowires, and they found that CoPt nanowires with larger diameter wires ͑200 nm͒ formed a tetragonal phase but 50 nm diameter formed a cubic phase with reduced coercivity contrary to the results of Shamaila et al 16 Here, equiatomic CoPt nanowires have been fabricated by electrochemical template synthesis. An Au cap layer was then deposited above CoPt wires using a dual bath technique.…”

Large-scale synthesis of Au–Ni alloy nanowires using electrochemical deposition

“…Particularly different research groups show considerable interest in the fabrication and characterization of nanostructured ferromagnetic nanowire arrays due to their potential applications in magnetic recording media and sensors (Fert and Piraux 1999;Albrecht et al 2000;McGary et al 2006;Clime et al 2007), synthesis of carriers for magnetic manipulation in bio-medical applications (Reich et al 2003;Link and ElSayed 1999;Nicewarner et al 2003;Mock et al 2002) or magnetic nano-assembly (Xu et al 2005;Bicelli et al 2008). Because of the possibility of favorable tailoring of their intrinsic and geometric anisotropies (Dahmane et al 2006;Huang et al 2002;Shamila et al 2008;Cho et al 2006; Kumar et al 2006), these nanowires are more advantageous over classical superparamagnetic particles. In these days, magnetic multilayered nanowires are potential contenders for high density magnetic data storage, magnetic sensors, and spintronic applications (Fert and Piraux 1999;Albrecht et al 2000;McGary et al 2006;Clime et al 2007).…”