Magnetization of Small Permalloy Circuit Elements

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Abstract
Small thin‐film elements of permalloy are being used in circuits for propagating circular magnetic domains in an adjacent uniaxial wafer. This paper shows that these elements often are not magnetically saturated and, therefore, exhibit pole distributions which depend on the applied field and geometry of the element. Approximate relations are derived from numerical solutions of a number of specific cases to aid the design and understanding of these circuits.

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