Physics – Condensed Matter – Materials Science
Scientific paper
2010-08-11
Physics
Condensed Matter
Materials Science
9 (single column) pages, 4 figures
Scientific paper
We report on an anomalous magnetization observed with temperature for low magnetic fields applied in the plane of a film formed by a thin layer of Fe-Rh deposited on a thin foil of ordered Fe$_3$Pt. The anomalous effect resembles a metamagnetic transition and occur only in the field-cooled-cooling magnetization curve at temperatures near 120 K. We also observe an aging effect which broads the metamagnetic-like transition suggesting the existence of Fe-Rh antiferromagnetic clusters which apparently are too small to be detected by the x-ray diffraction.The X-Ray diffractogram obtained in the Fe-Rh surface of the film do not show the Fe-Rh antiferromagnetic phase (a=2.98 $\AA$) but peaks at same locations of those found for the pure ordered Fe$_3$Pt film (a=3.72 $\AA$)
Jr.
Alvarenga A. D.
Gandra F. G.
Mejia Salazar C.
Noce R. D.
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