Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-25T12:28:48.132Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic and Morphological Properties of Nanophase Metallic Particles of Fe, Co, and Ni

Published online by Cambridge University Press:  28 February 2011

S. Gangopadhyay ,
G. C. Hadjipanayis ,
C. M. Sorensen  and
K. J. Klabunde
S. Gangopadhyay
Affiliation:
University Of Delaware, Department Of Physics & Astronomy, Newark, DE 19716
G. C. Hadjipanayis
Affiliation:
University Of Delaware, Department Of Physics & Astronomy, Newark, DE 19716
C. M. Sorensen
Affiliation:
Kansas State University, Manhattan, KS 66506
K. J. Klabunde
Affiliation:
Kansas State University, Manhattan, KS 66506
Get access

Abstract

A vapor deposition technique has been used to prepare nano-size particles of Fe, Co and Ni using argon gas. The particles were passivated from further oxidation using a small volume of air. The range of particle size obtained in these systems was 47–200 Å. The saturation magnetization of Fe particles varied between 25–200 emu/g with the higher values corresponding to larger particles and the highest coercivity achieved at room temperature was 1050 Oe. In the case of Co and Ni, the magnetization varied in the range 35–100 emu/g and 14–45 emu/g, respectively. The highest room temperature coercivity was 1200 and 41 Oe for Co and Ni, respectively. A shell-type structure consisting of a metallic core surrounded by an oxide shell has been proposed for the particles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 206: Symposium G – Clusters and Cluster-Assembled Materials , 1990 , 55
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. Luborsky, Fred E. and Lawrence, Philip E., J. Appl. Phys. 32, 2315 (1961).Google Scholar
2. Kishimoto, M., Kitahata, S. and Amemiya, M., IEEE Trans. Mag. MAG-22, 732 (1986).CrossRefGoogle Scholar
3. Xiao, G. and Chien, C. L., Appl. Phys. Lett. 51, 1280 (1987).Google Scholar
4. Matijevic, E., MRS Bulletin, Vol. XIV, 19 (1989).Google Scholar
5. Tasaki, A., Saegusa, N. and Oda, M., IEEE trans. Mag. MAG-19, 1731 (1983).Google Scholar
6. Gangopadhyay, S. and Hadjipanayis, G. C. (to be published).Google Scholar
7. Papaefthymiou, V., Kostikas, A., Simopoulos, A., Niarchos, D., Gangopadhyay, S., Hadjipanayis, G. C. and Sorensen, C. M., J. Appl. Phys. 67, 4487 (May 1990).Google Scholar
8. Tamura, I. and Hayashi, M., Surf. Sci. 146, 501 (1984).Google Scholar
9. Haneda, K. and Morrish, A. H., Nature 282, 186 (1979).Google Scholar
10. Mørup, S. and Topsøe, H., Appl. Phys. 11, 63 (1976).Google Scholar