Abstract
Some properties of oxidized Permalloy films with well defined rotatable initial susceptibility (RIS) have been measured throughout the composition range 70% to 90% nickel and over the thickness range 500 to 7000 Å. These properties include initial suceptibility, coercive force, saturation magnetization, rotational hysteresis and the rotational hysteresis integral. Interesting correlations were found between these properties and the thickness and composition. In particular, the rotational hysteresis integral has the characteristic value 1.5 for type 1 RIS and a different value 3.5 for type 2 RIS, independent of thickness or composition in the range studied. It was concluded that there is no significant correlation between the RIS property and macroscopic magnetostriction of the Permalloy used.
Published Version
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