| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1827 - C8-1828 | |
| DOI | https://doi.org/10.1051/jphyscol:19888835 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1827-C8-1828
DOI: 10.1051/jphyscol:19888835
1 Laboratory of Applied Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
2 Department of Physics, University College of North Wales, Bangor LL57 2UW, G.B.
3 Haldor Topsøe Equipment Division, DK-3600 Frederikssund, Denmark
J. Phys. Colloques 49 (1988) C8-1827-C8-1828
DOI: 10.1051/jphyscol:19888835
A MÖSSBAUER SPECTROSCOPY STUDY OF SUPERPARAMAGNETISM IN THE IRON-MERCURY SYSTEM
S. Linderoth1, S. Mørup1, A. Meagher2, S. Wells2, J. van Wonterghem3, H. K. Rasmussen1 et S. W. Charles31 Laboratory of Applied Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
2 Department of Physics, University College of North Wales, Bangor LL57 2UW, G.B.
3 Haldor Topsøe Equipment Division, DK-3600 Frederikssund, Denmark
Abstract
Utrasmall particles in the iron-mercury system have been found to exhibit superparamagnetic relaxation above 150 K. At 12 K the average hyperfine field is significantly larger than that of bulk α-Fe. The results suggest that most of the iron atoms are influenced by mercury in a surface or bulk phase.