| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1825 - C8-1826 | |
| DOI | https://doi.org/10.1051/jphyscol:19888834 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1825-C8-1826
DOI: 10.1051/jphyscol:19888834
Laboratoire de Magnétisme, CNRS, 92195 Meudon-Cedex, France
J. Phys. Colloques 49 (1988) C8-1825-C8-1826
DOI: 10.1051/jphyscol:19888834
SUPERPARAMAGNETIC-PARAMAGNETIC TRANSITION IN SMALL PARTICLES
C. Djega-Mariadassou, L. Bessaïs, J. L. Dormann et G. VillersLaboratoire de Magnétisme, CNRS, 92195 Meudon-Cedex, France
Abstract
The paramagnetic state and the superparamagnetic regime of small particles of the granular system Fe64Cr16B20-Al2O3 have been studied by mean of magnetization and susceptibility and compared to the properties of the corresponding bulk metal. The evolution of the magnetic structure near and above Tc is the same for both compounds. Deductions upon the particle size have been attempted.