Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-29T07:31:46.318Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Properties of Uniform Nanowire arrays

Published online by Cambridge University Press:  10 February 2011

P. P. Nguyen  and
R. J. Tonucci
P. P. Nguyen
Affiliation:
Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375
R. J. Tonucci
Affiliation:
Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375
Get access

Abstract

Fabrication and magnetic measurements of ferromagnetic (Ni and Co) nanowire arrays using nanochannel glass templates are presented. These nanowire arrays have novel characteristics: The nanowires are very parallel (to within a fraction of a degree) and regularly placed. They are circular with extremely uniform diameter (of less than 80 nm for some samples) both along individual wire's length and among different wires within an array. Magnetic measurements show enhanced coercivities compared to the bulk values. The saturation magnetization for Ni nanowires depends much more strongly on temperature than that for Co nanowires. The coercivities are also dependent strongly on temperature and can be explained by a thermal-activation model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 421
Copyright
Copyright © Materials Research Society 1996

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

[1] See for instance Kirk, W.P. and Reed, M.A.. In Nanostructures and Mesoscopic Systems. Academic Press, New York, 1992.Google Scholar
[2] Science 254, 1300 (1991). And references therein.Google Scholar
[3] O'Barr, R., Lederman, M., and Schultz, S., J. Appl. Phys. (1995). In press.Google Scholar
[4] Meier, J., Doudin, B., and Ansermet, J.-Ph., Journal of Applied Physics (1995). In press.Google Scholar
[5] Al-Mawlawi, D., Liu, C. Z., and Moskovits, M., J. Mater. Res. 9, 1014 (1994).Google Scholar
[6] Whitney, T. M., Jiang, J. S., Searson, P. C., and Chien, C. L., Science 261, 1316 (1993).Google Scholar
[7] Huber, C. A., Huber, T. E., Sadoqi, M., Lubin, J. A., Manalis, S., and Prater, C. B., Science 263, 801 (1994).Google Scholar
[8] Lederman, M.,O'Barr, R., and Schultz, S., IEEE Trans. Magnetics 31, 3793 (1995).Google Scholar
[9] Guerret-Plecourt, C., Bouar, Y. Le, Loiseau, A., and Pascard, H., Nature 372, 761 (1994).Google Scholar
[10] Ajayan, P. M. and Iijima, S., Nature 361, 333 (1993).Google Scholar
[11] Tonucci, R. J., Justus, B. L., Campillo, A. J., and Ford, C. E., Science 258, 783 (1992).Google Scholar
[12] Nguyen, P. P., Pearson, D. H., and Tonucci, R. J.. To be submitted to Appl. Phys. Lett.Google Scholar
[13] Corning glass type 8161. Corning Glass Works, Corning, NY 14831.Google Scholar
[14] Kittel, C.. In Introduction to Solid State Physics, pages 397–457. John Wiley and Son, Inc., New York, 1986.Google Scholar
[15] Chikazumi, S.. In Physics of Magnetism, page 19. John Wiley and Sons, Inc., New York, 1959.Google Scholar
[16] In CRC Handbook of Chemistry and Physics. CRC Press, Inc., 1994.Google Scholar
[17] Meier, J., Blondel, A., Doudin, B., and Ansermet, J.-Ph., Helv. Phys. Acta 67(7), 761 (1994).Google Scholar
[18] Kneller, E. F. and Luborsky, F. E., J. Appl. Phys. 34(3), 656 (1963).Google Scholar