Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-02T21:17:46.138Z Has data issue: false hasContentIssue false

Fractal Aggregation of Magnetic Particles

Published online by Cambridge University Press:  28 February 2011

J. P. Bucher
Affiliation:
Department of Physics, University of Virginia, Charlottesville, VA 22901
N. D. Rizzo
Affiliation:
Department of Physics, University of Virginia, Charlottesville, VA 22901
J. G. Louderback
Affiliation:
Department of Physics, University of Virginia, Charlottesville, VA 22901
L. A. Bloomfield
Affiliation:
Department of Physics, University of Virginia, Charlottesville, VA 22901
Get access

Abstract

We present an experimental model where magnetic balls in a box are used to simulate aggregation of small ferromagnetic particles a few nm in diameter. The aggregation can be characterized by a fractal dimension that increases as the magnetic moment of the particles decreases. The magnetization of the system of balls has been measured in an external magnetic field and compared for different values of the magnetic moments.

Type
Research Article
Copyright
Copyright © Materials Research Society 1991

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. Jacobs, I.S., Bean, C.P., in Magnetism, edited by Rado, G.T. and Suhl, H. (Academic Press Inc. New-York, 1963), Vol. III, p. 272.Google Scholar
2. Niklasson, G.A., Torebring, A., Larsson, C., Granqvist, C.G., Farestam, T., Phys. Rev. Lett. 60, 1735, (1988).Google Scholar
3. Mors, P.M., Botet, R., Jullien, R., J. Phys. A: Math. Gen. 20, L975, (1987).Google Scholar
4. Meakin, P., Phys. Rev. Lett. 51, 1119, (1983).Google Scholar
5. Kolb, M., Botet, R., Jullien, R., Phys. Rev. Lett. 51, 1123, (1983).Google Scholar
6. Bucher, J.P., Eur. J. Phys. in press.Google Scholar
7. de Gennes, P.G., Pincus, P.A., Phys. kondens. Materie, 11, 189, (1970).Google Scholar
8. Sholten, , J. Magn. Magn. Mat. 39, 99, (1983).CrossRefGoogle Scholar
9. Chantrell, R.W., Bradbury, A., Popplewell, J., Charles, S.W., J. Appl. Phys. 53, 2742, (1982).Google Scholar
10. Shliomis, M.I., Pshenichnikov, A.F., Morozov, K.I., Shurubor, I.Yu, J. Magn. Magn. Mat. 85, 40, (1990).Google Scholar