Annealing Coercive force Energy dispersive spectroscopy Grain size and shape Granular materials Magnetic anisotropy
Issue Date:
2002
Publisher:
Journal of Physics Condensed Matter
Citation:
Volume 14, Issue 26, Page 6657-6666
Abstract:
X-ray diffraction, magnetization and M??ssbauer effect investigations have been performed for the
sputtered Fe0.2Cu0.8 thin films. A segregation forming isolated body-centred cubic Fe grains in the facecentred
cubic Cu matrix with an average diameter between 1 and 40 nm took place upon annealing in the
temperature range from 100 to 500?C. In addition, the magnetic coercive field is found to be enhanced and
reaches a value of 37 mT for the sample annealed at 400?C. A perpendicular surface anisotropy constant KS
= 0.04 mJ m-2 is deduced. Surface spin configurations are discussed for the granular films investigated.
