| Issue |
Europhys. Lett.
Volume 40, Number 1, October 1997
|
|
|---|---|---|
| Page(s) | 93 - 98 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00429-5 | |
| Published online | 01 September 2002 | |
The anomalous temperature dependence of the paramagnetic response of Fe-rich fcc Fe-Ni
1
Tieftemperaturphysik, Gerhard-Mercator Universität Duisburg, 47048 Duisburg,
Germany
2
Institut Laue-Langevin, B.P. 156, 38042 Grenoble Cedex 9, France
Received:
8
July
1997
Accepted:
21
August
1997
Temperature dependent paramagnetic neutron scattering experiments on
fcc 
anti-Invar alloys (
at%) show strong magnetic scattering in the foreward direction at
temperatures as high as 1100 K, indicating ferromagnetic correlations
although, no long-range ferromagnetic ordering occurs in the fcc state
of the alloys with 
at%. The intensity of the magnetic
scattering in the foreward direction decreases with increasing
temperature for x=20 and 25 at%, it remains nearly constant with
temperature for x=15 at% and shows the unusual behavior of
increasing with increasing temperature for x=10 at%. The
temperature dependence of the correlation length also behaves
similarly.
PACS: 75.50.Bb – Fe and its alloys / 75.20.En – Metals and alloys
© EDP Sciences, 1997
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