4.7 Article

Topology optimization of a heat-assisted magnetic recording write head to reduce transition curvature using a binary optimization algorithm utilizing the adjoint method

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Summary: This paper presents a method for optimizing the topology of hard and soft magnetic structures using the density approach for topology optimization. The stray field is calculated using a hybrid finite element-boundary element method, and the necessary gradients for optimization are efficiently calculated using the adjoint approach. The method's capabilities are showcased by optimizing the topology of hard and soft magnetic thin film structures and the results are verified by comparison with an analytical solution.

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