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Simultaneous Optimal Design of the Yoke and Coil in Perpendicular Magnetic Recording Heads

Strategic Insights

— 1 min read

Researchers from Yonsei University in Seoul, South Korea, have proposed an innovative design for the yoke and coil in perpendicular magnetic recording (PMR) heads. This breakthrough, which aims to increase magnetic recording density while reducing field leakage, utilizes a topology optimization method combined with the finite-element method (FEM). By applying this method, the researchers achieved significant improvements, including a substantial increase in recording flux and a reduction in leakage in the adjacent area. The study was published in IEEE Transactions on Magnetics and demonstrates the potential for enhanced magnetic recording performance.

Key Takeaways:

  • The researchers developed a topology design of the yoke and coil in PMR heads using the density method, which maximizes the recording flux and minimizes leakage.
  • The study utilized the finite-element method (FEM) combined with topology optimization to determine the shape of the coil and yoke.
  • The numerical results showed a significant increase in recording flux and a reduction in leakage in the adjacent area.
  • The design approach verified through commercial package simulation using Maxwell demonstrated promising results for magnetic recording performance.
  • Yonsei University researchers proposed this innovative design to improve magnetic recording density and reduce field leakage.
  • Application of topology optimization and FEM in magnetic recording head design may lead to further advancements in this field.

Statistics:

  • The study was published in IEEE Transactions on Magnetics (Volume 45, Issue 10, Special Issue, 2009).
  • The numerical results showed a significant increase in recording flux (not specified).
  • The leakage in the adjacent area was reduced (not specified).
  • The study utilized Maxwell for commercial package simulation.
  • The researchers proposed the design for perpendicular magnetic recording (PMR) heads.

Sources:

  • S. Park and colleagues, Yonsei University, IEEE Transactions on Magnetics (2009); 45(10 Sp. Iss): 3668-3671.
  • J. Yoo, Yonsei University, School Mech Engineering, Seoul 120749, South Korea.
  • IEEE-Institute Electrical Electronics Engineers Inc., 445 Hoes Lane, Piscataway, NJ 08855, USA.

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