Browse > Article
http://dx.doi.org/10.5229/JKES.2005.8.3.125

Electrochemical Factors Affecting the Magnetic Properties of Co based Magnetic Nanowires  

Lee, Jong-Wook (Materials Science & Technology Division, KIST)
Park, Ho-Dong (Materials Science & Technology Division, KIST)
Lee, Kwan-Hyi (Materials Science & Technology Division, KIST)
Kim, Gyeung-Ho (Materials Science & Technology Division, KIST)
Jeung, Won-Young (Materials Science & Technology Division, KIST)
Publication Information
Journal of the Korean Electrochemical Society / v.8, no.3, 2005 , pp. 125-129 More about this Journal
Abstract
We have investigated the electrochemical factors affecting the magnetic properties of hard magnetic CoP nanowires and soft magnetic CoFe nanowires fabricated by ac electrodeposition into self-made AAO(anodic aluminum oxide) nano-templates. AAO template having nano scale pores of high aspect ratio has been prepared through 2-step anodizing of aluminum foil in sulfuric acid. Hard Magnetic properties of CoP nanowires were highly conditional on the applied ac potential which could be a decisive factor to make CoP nanowires made up of either pure hcp crystals or a mixture of hop crystals and fcc crystals. On the contrary to CoFe films, there was no anomalous codeposition in the electrodeposition of soft magnetic CoFe nanowires which exhibited their best saturation magnetization of 238 emu/g at the composition of $Co_{30}Fe_{70}$.
Keywords
Nanowire; Electrodeposition; AAO; CoP; CoFe;
Citations & Related Records
연도 인용수 순위
  • Reference
1 A. Blondel, J. P. Meier, B. Boudin, and J. Ansermet, 'Giant magnetoresistance of nanowires of multilayers', Appl. Phys. Lett., 65, 3019 (1994)   DOI   ScienceOn
2 K. H. Lee, G. H. Kim, Y. J. Kim, and W. Y. Jeung, 'Formation and Characterization of self-ordered ferromagnetic nanowires by ac electrodeposition', Mater. Sci. Forum, 437-438, 499 (2003)   DOI
3 P. R. Evans, G. Yi, and W. Schwarzacher, 'Current perpendicular to plane giant magnetoresistance of multilayered nanowires electro-deposited in anodic aluminum oxide membranes', Appl. Phys. Lett., 76, 481 (2000)   DOI   ScienceOn
4 G. Yi, and W. Schwarzacher, 'Single crystal superconductor nanowires by electrodeposition', Appl. Phys. Lett., 74, 1746 (1999)   DOI   ScienceOn
5 F. Lallemand, L. Ricq, P. Bercot, J. Pagetti, 'Effects of the structure of organic additives in the electrochemical preparation and characterization of CoFe film', Electocchimica Acta, 47, 4149 (2002)   DOI   ScienceOn
6 S. Y. Chou, P. R. Krauss, and P. J. Renstrom, 'Imprint Lithography with 25-Nanometer Resolution', Science, 272, 85 (1996)   DOI   ScienceOn
7 S. Y. Chou, 'Patterned magnetic nanostructures and quantized magnetic disks', Proc. IEEE, 85, 652 (1997)   DOI   ScienceOn
8 S. Ge, C. Li, X. Ma, W. L. Xi, and C. X. Li, 'Approach to fabricating Co nanowire arrays with perpendicular anisotropy: Application of a magnetic field during deposition', J. Appl. Phys., 90, 509 (2001)   DOI   ScienceOn
9 J. M. Garica, A. Asenyo, J. Velazquez, D. garcia, and M. Vazquez, 'Magnetic behavior of an array of cobalt nanowires', J. Appl. Phys., 85, 5480 (1999)   DOI   ScienceOn
10 K. Ounadjela, R. Ferre, L. Louail, J. M. George, J. L. Maurice, L. Piraux, and S. Dubois, 'Magnetization reversal in cobalt and nickel electrodeposited nanowires', J. Appl. Phys., 81, 5455 (1997)   DOI   ScienceOn
11 K. H. Lee, H. W. Lee, W. Y. Jeung, and W. Y. Lee, 'Magnetic properties and crystal structures of self-ordered ferromagnetic nanowires by ac electroforrning', J. Appl. Phys., 91, 8513 (2002)   DOI   ScienceOn
12 K. H. Lee, G. H. Kim, and W. Y. Jeung, 'Correlation between magnetic properties of electrodeposited Co(P) and $NH_4Cl$ concentrations in the electrolyte', Electrochem. Commun., 4, 605 (2002)   DOI   ScienceOn
13 W. D. William and N. Giordano, 'Experimental study of localization and electron-electron interaction effects in thin Au wires', Phys. Rev. B, 33, 8146 (1986)   DOI   ScienceOn
14 T. M. Whitney, J. S. Jiang, P. C. Searson, and C. L. Chien, 'Fabrication and magnetic properties of arrays of metallic nanowires', Science, 261, 1316 (1993)   DOI
15 L. Piraux, J. M. George, J. F. Despres, and A. Fert, 'Giant magnetoresistance in magnetic multilayered nanowires', Appl. Phys. Lett., 65, 2484 (1994)   DOI   ScienceOn
16 S. G. Yang, H. Zhu, G. Ni, D. L. Yu, S. L. Tang, and Y. W. Du, 'A study of cobalt nanowire arrays', J. Phys. D, Appl. Phys., 33, 2388 (2000)   DOI   ScienceOn