Angular Dependence of Susceptibility in Thin Fe78B19Si3 Films
J. Nowak
Solid State Physics Department, Polish Academy of Sciences, Wandy 3, 41-800 Zabrze, Poland

and J. Wenda
Institute of Electronics, Academy of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland
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The differential transversal susceptibility as a function of an external magnetic field was measured for several directions of the magnetic field with respect to the anisotropy axis. Both the anisotropy field and coercive field were determined by analyzing the symmetry properties of the susceptibility field dependence. The Stoner-Wohlfarth model was modified by introducing an internal field and used to fit the experimental data. The hyperbolic parts of susceptibility curves corresponding to single domain states were well reproduced by fitting the appropriate constant value of the internal field.
DOI: 10.12693/APhysPolA.85.419
PACS numbers: 75.70.-i, 75.60.Ej