Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-17T15:12:10.870Z Has data issue: false hasContentIssue false

Fabrication and magnetic behavior of Co/Cu multilayered nanowires

Published online by Cambridge University Press:  03 March 2011

Liwen Tan*
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
Bethanie J.H. Stadler
Affiliation:
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

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.

Type
Articles
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Martin, J.I., Nogues, J., Liu, K., Vicent, J.L., Schuller, I.K.: Ordered magnetic nanostructures: Fabrication and properties. J. Magn. Magn. Mater. 256, 449 (2003).CrossRefGoogle Scholar
2.Piraux, L., George, J., Despres, J., Leroy, C., Ferain, E., Legras, R., Ounadjela, K., Fert, A.: Giant magnetoresistance in magnetic multilayered nanowires. Appl. Phys. Lett. 65, 2484 (1994).CrossRefGoogle Scholar
3.Strijkers, G.J., Dalderop, J.H.J., Broeksteeg, M.A.A., Swagten, H.J.M., de Jonge, W.J.M.: Structure and magnetization of arrays of electrodeposited Co wires in anodic alumina. J. Appl. Phys. 86, 5141 (1999).CrossRefGoogle Scholar
4.Hao, Z., Shaoguang, Y., Gang, N., Dongliang, Y., Youwei, D.: Study on magnetic property of Fe14Ni86 alloy nanowire array. J. Magn. Magn. Mater. 234, 454 (2001).CrossRefGoogle Scholar
5.Blondel, A., Meier, J.P., Doudin, B., Ansermet, J-Ph.: Giant magnetoresistance of nanowires of multilayers. Appl. Phys. Lett. 65, 3019 (1994).CrossRefGoogle Scholar
6.Liu, K., Nagodawithana, K., Searson, P., Chien, C.: Perpendicular giant magnetoresistance of multilayered Co/Cu nanowires. Phys. Rev. B 51, 7381 (1995).CrossRefGoogle ScholarPubMed
7.Ohgai, T., Hoffer, X., Gravier, L., Wegrowel, J-E., Ansermet, J-P.: Bridging the gap between template synthesis and microelectronics: Spin-valves and multilayers in self-organized anodized aluminium nanopores. Nanotechnology 14, 978 (2003).CrossRefGoogle Scholar
8.Stadler, B.J.H., Kim, N., Tan, L., Zou, J., Kelchner, K., Cobian, R.K.Nanowire arrays with specialized geometries for magnetoelectronics, in Fabrication and New Applications of Nanomagnetic Structures, edited by Wang, J-P., Ryan, P.J., Nielsch, K., and Cheng, Z. (Mater. Res. Soc. Symp. Proc. 853E, Warrendale, PA, 2005), I6.3.Google Scholar
9.Paunovic, M., Schlesinger, M.: Fundamentals of Electrochemical Deposition (John Wiley & Sons, New York,1998).Google Scholar
10.Tan, L., Cobian, R.K, Stadler, B.J.H., Wang, L., Leighton, C., Crowell, P. Electrodeposition of Co and Co/Cu nanowires with controlled crystallographic orientation. (unpublished).Google Scholar