| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1835 - C8-1836 | |
| DOI | https://doi.org/10.1051/jphyscol:19888839 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1835-C8-1836
DOI: 10.1051/jphyscol:19888839
1 Department of Physics, U.N.C.W., Bangor, Gwynedd, LL57 2UW, G.B.
2 School of Physics, Lancs. Polytechnic, Preston, PR1 2TQ, G.B.
3 Department of Physics, Yarmouk University, Irbid, Jordan
J. Phys. Colloques 49 (1988) C8-1835-C8-1836
DOI: 10.1051/jphyscol:19888839
SUSCEPTIBILITY PEAKS IN A FINE PARTICLE SYSTEM
M. El-Hilo1, K. O'Grady1, J. Popplewell1, R. W. Chantrell2 et N. Ayoub31 Department of Physics, U.N.C.W., Bangor, Gwynedd, LL57 2UW, G.B.
2 School of Physics, Lancs. Polytechnic, Preston, PR1 2TQ, G.B.
3 Department of Physics, Yarmouk University, Irbid, Jordan
Abstract
From measurements of the peaks in the dc susceptibility with concentration, for a system of Fe3O4 particles, we have obtained a simple power-law relationship between Tg (temperature at χmax) and Is (the saturation magnetisation of the dispersion) i.e., Tg ∝ Ims. The change in Tg is shown to be driven by dipolar interactions between the particles.