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The research aims to design an optimized magnetic circuit for large magnetostrictive devices using TbDyFe alloy.

January 14, 2026Rare MetalsOpen Access

Configuration Optimization Design of Magnetic Circuit for Large Magnetostrictive Devices Based on TbDyFe Alloy

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The research aims to design an optimized magnetic circuit for large magnetostrictive devices using TbDyFe alloy.
Developed a novel bias field scheme with PM/PI/GMM stack assembly
Applied magnetic refraction to homogenize the magnetic field
Created a streamlined magnetic circuit model based on zero MMF
Reduced magnetic field inhomogeneity from 26.7% to 1.5%
Increased average magnetic field intensity from 54 to 67 kA m−1
Proposed design can accommodate devices with a large aspect ratio

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This research finds improved magnetic circuit design for devices using TbDyFe alloy, suggesting enhanced efficiency and output.

Yu et al. (2026) studied this question.

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