| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-1821 - C8-1822 | |
| DOI | https://doi.org/10.1051/jphyscol:19888832 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1821-C8-1822
DOI: 10.1051/jphyscol:19888832
1 Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, U.S.A.
2 AT & T Bell Labs, Murray Hill, NJ 07974, U.S.A.
J. Phys. Colloques 49 (1988) C8-1821-C8-1822
DOI: 10.1051/jphyscol:19888832
MAGNETIC PROPERTIES OF NANOCRYSTALS OF Fe
C. L. Chien1, Gang Xiao1 et S. H. Liou21 Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, U.S.A.
2 AT & T Bell Labs, Murray Hill, NJ 07974, U.S.A.
Abstract
Magnetic granular solids consist of ultrafine metal granules of nanometer sizes embedded in an insulating medium. The magnetic properties are dictated by the nanostructure, which is process controlled. We report on results for granular Fe - SiO2 films where the metal volume fraction and particle size have been systematically varied. Magnetic coercivities as high as 2 500 Oe at low temperatures and 1 100 Oe at room temperature have been achieved.