Hostname: page-component-5c6d5d7d68-pkt8n Total loading time: 0 Render date: 2024-08-07T16:10:22.702Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Properties of Self-Assembled Fe Nanoparticle Arrays

Published online by Cambridge University Press:  21 March 2011

D. Farrell ,
S. Yamamuro  and
S. A. Majetich
D. Farrell
Affiliation:
Dept. of Physics, Carnegie Mellon University Pittsburgh, PA 15213, U.S.A.
S. Yamamuro
Affiliation:
Dept. of Physics, Carnegie Mellon University Pittsburgh, PA 15213, U.S.A.
S. A. Majetich
Affiliation:
Dept. of Physics, Carnegie Mellon University Pittsburgh, PA 15213, U.S.A.
Get access

Abstract

The magnetic properties of multilayer arrays of Fe nanoparticles were compared with those of frozen, dilute suspensions of the same particles. The array sample displayed larger coercivity in both hysteretic and remanent magnetization measurements. However, the derivative of the remanent magnetization curve shows a much broader switching field distribution for the arrays than for the dilute sample. Magnetic relaxation measurements show the convergence of the time dependent properties of the samples at large times, and much more rapid relaxation in the arrays at short times.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 674: Symposia T/U/V – Applications of Ferromagnetic and Optical Materials, Storage and Magnetoelectronics , 2001 , U4.4
Copyright
Copyright © Materials Research Society 2001

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. Cullity, B. D., Introduction to Magnetic Materials (Addison-Wesley, Reading, MA, 1972), p. 387.Google Scholar
2. Sun, S.. Murray, C. B., Weller, D., Folks, L., and Moser, A., Science 287, 1989 (2000).10.1126/science.287.5460.1989Google Scholar
3. Petit, C., Taleb, A., and Pileni, M. P., J. Phys. Chem. 103, 1805 (1999).Google Scholar
4. Yamamuro, S., Farrell, D., Majetich, S. A., MRS Symposium Proceedings, Fall 2000, paper D10.8.Google Scholar
5. Stoner, E. C., F. R. S., and Wohlfarth, E. P., Phil. Trans. Roy. Soc. 240, 599 (1948).Google Scholar
6. Mukhopadhyay, G., Apell, P., and Hanson, M., J. Magn. Magn. Mater. 203, 286 (1999).Google Scholar
7. Street, R. and Woolley, J. C., Proc. Phys. Soc. A 62, 562 (1949).Google Scholar
8. Chantrell, R. W., Fearon, M., and Wohlfarth, E. P., Phys. Stat. Sol. (a) 9, 213 (1986).Google Scholar
9. Majetich, S. A. and Kirkpatrick, E. M., IEEE Trans. Mag. 33, 3721 (1997).Google Scholar
10. Humfeld, K. D., Giri, A. K., Majetich, S. A., and Venturini, E. L., IEEE Trans. Mag. (in press, 2001).Google Scholar