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Disordered Magnetic Phase in Partially Oxidized Bulk Nanocrystalline Iron |
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| Authors: | J. Hakl L. Kerekes S. Mészáros K. Vad P. Gurin M. Kis-Varga I. Uzonyi S. Szabó D. L. Beke |
| Affiliation: | (1) Institute of Nuclear Research, Hungarian Acad. Sci., H-4001, Debrecen, POB 51, Hungary;(2) Department of Solid State Physics, University of Debrecen, H-4010 Debrecen, POB 2, Hungary |
| Abstract: | Magnetically frozen partially disordered state was observed in nanocrystalline bulk iron prepared by ball-milling of microcrystalline Fe. Role of nanostructure and oxidized fraction is pointed out. Altough we have found a small constituent which is proportional to 1/T in the ZFC curve, the magnetization scaling with T3/2 at high fields and the hysteretic behavior in FC-ZFC curves signalizes the presence of frozen ferromagnet at low temperatures. |
| Keywords: | ball milling nanocrystalline iron disordered phase |
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