Fabrication and magnetic behavior of Co/Cu multilayered nanowires

2006 ◽  
Vol 21 (11) ◽  
pp. 2870-2875 ◽  
Author(s):  
Liwen Tan ◽  
Bethanie J.H. Stadler
Keyword(s):  
Layer Thickness ◽  
Electrochemical Deposition ◽  
Magnetization Reversal ◽  
Applied Field ◽  
Magnetic Behavior ◽  
Anodic Alumina ◽  
Cu Nanowires ◽  
Anodic Alumina Templates ◽  
Multilayered Nanowires

Multilayered Co/Cu nanowires were fabricated using anodic alumina templates, containing 40-nm-diameter nanopores, and electrochemical deposition. The Cu layer thickness was varied to study the resulting differences in coercivity and magnetization reversal. Magnetization versus field loops both parallel and perpendicular to an applied field were measured to investigate the mechanisms of magnetization reversal. It was found that the coercivity decreased with increasing Cu thickness. In addition, the magnetization reversal appeared to be a combination of rotation and spin flipping, which was dependent on the Cu thickness and on the angle of the nanowires with the applied field.

scholarly journals A template/electrochemical deposition method for fabricating silver nanorod arrays based on porous anodic alumina

2017 ◽  
Vol 7 ◽  
pp. 184798041771754 ◽  
Author(s):  
Yafang Li ◽  
Jie Xu ◽  
Hao Liu ◽  
Jinzhong Song ◽  
Yashuang Li ◽  
...  
Keyword(s):  
Electrochemical Deposition ◽  
Barrier Layer ◽  
Electrochemical Impedance ◽  
Average Diameter ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Nanorod Arrays ◽  
Deposition Method ◽  
Electrochemical Deposition Method ◽  
Anodic Alumina Templates

A template/electrochemical deposition method for fabricating silver nanorod arrays based on porous anodic alumina was presented. The barrier layer of porous anodic alumina templates was thinned by step-by-step voltage decrement method. Subsequently, silver ions were reduced into the channels of porous anodic alumina templates by electrochemical deposition method. Electrochemical impedance spectroscopy was utilized for analyzing the thickness of barrier layer of porous anodic alumina templates; the elementary composition and the size of silver nanorod arrays were characterized by X-ray diffraction and field-emission scanning electron microscope, respectively. Experimental results showed that the thickness of barrier layer of porous anodic alumina was suitable for alternating current electrochemical deposition, when anodizing potential was decreased to 70 V and widening time of porous anodic alumina in H3PO4 solution is 80 min. And the silver particles could be deposited into the channels of porous anodic alumina templates at 11 V, 13 V, and 15 V. Different sizes of silver nanorod arrays were obtained by controlling the deposition time. The average diameter of silver nanorod is in the range from 346 nm to 351 nm which is almost consistent with the pore diameter of porous anodic alumina templates (367 nm). The uniform silver nanorod arrays have a considerable potential in the flexible and wearable electronic devices, optics, solar cell, the catalytical electrode, and so on.

Tunning pore filling of anodic alumina templates by accurate control of the bottom barrier layer thickness

2011 ◽  
Vol 22 (31) ◽  
pp. 315602 ◽  
Author(s):  
C T Sousa ◽  
D C Leitão ◽  
M P Proença ◽  
A Apolinário ◽  
J G Correia ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Barrier Layer ◽  
Anodic Alumina ◽  
Pore Filling ◽  
Barrier Layer Thickness ◽  
Anodic Alumina Templates

Large scale ordered topographical and chemical nano-features from anodic alumina templates

2009 ◽  
Vol 256 (2) ◽  
pp. 395-398 ◽  
Author(s):  
Sophie Massou ◽  
Laurence Masson ◽  
Igor Ozerov ◽  
Eric Moyen ◽  
Kheya Sengupta ◽  
...  
Keyword(s):  
Large Scale ◽  
Anodic Alumina ◽  
Anodic Alumina Templates

Fast and selective Cu2O nanorod growth into anodic alumina templates via electrodeposition

2012 ◽  
Vol 12 (1) ◽  
pp. 60-64 ◽  
Author(s):  
HyungKuk Ju ◽  
Jae Kwang Lee ◽  
Jongmin Lee ◽  
Jaeyoung Lee
Keyword(s):  
Anodic Alumina ◽  
Anodic Alumina Templates ◽  
Nanorod Growth

Sputter Deposition of Self-Organized Nanoclusters Through Porous Anodic Alumina Templates

2007 ◽  
Vol 7 (2) ◽  
pp. 641-646 ◽  
Author(s):  
Smita Gohil ◽  
Ramesh Chandra ◽  
Bhagyashree Chalke ◽  
Sangita Bose ◽  
Pushan Ayyub
Keyword(s):  
Ambient Pressure ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Average Pore ◽  
Self Organized ◽  
Atomic Force ◽  
Sputter Deposited ◽  
Anodic Alumina Templates ◽  
Hexagonally Ordered ◽  
Ordered Porous

Silver nanoparticles were sputter deposited through self organized hexagonally ordered porous anodic alumina templates that were fabricated using a two-step anodization process. The average pore diameter of the template was 90 nm and the interpore spacing was 120 nm. Atomic force microscope studies of the sputter-deposited silver nanoparticle array on a Si substrate indicate an approximate replication of the porous anodic alumina mask. The nature of the deposition depends strongly on the process parameters such as sputtering voltage, ambient pressure and substrate temperature. We report a detailed study of the sputtering conditions that lead to an optimal deposition through the template.

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